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AC_SUBST(PGO_PROF_GEN_FLAG) AC_SUBST(PGO_PROF_USE_FLAG) AC_SUBST(LLVM_PROF_MERGER) AC_SUBST(LLVM_PROF_FILE) AC_SUBST(LLVM_PROF_ERR) AC_SUBST(LLVM_PROFDATA) AC_PATH_TOOL(LLVM_PROFDATA, llvm-profdata, '', ${llvm_path}) AC_SUBST(LLVM_PROF_FOUND) if test -n "${LLVM_PROFDATA}" -a -x "${LLVM_PROFDATA}" then LLVM_PROF_FOUND="found" else LLVM_PROF_FOUND="not-found" fi if test "$ac_sys_system" = "Darwin" -a "${LLVM_PROF_FOUND}" = "not-found" then found_llvm_profdata=`/usr/bin/xcrun -find llvm-profdata 2>/dev/null` if test -n "${found_llvm_profdata}" then # llvm-profdata isn't directly in $PATH in some cases. # https://apple.stackexchange.com/questions/197053/ LLVM_PROFDATA='/usr/bin/xcrun llvm-profdata' LLVM_PROF_FOUND=found AC_MSG_NOTICE([llvm-profdata found via xcrun: ${LLVM_PROFDATA}]) fi fi LLVM_PROF_ERR=no case $CC in *clang*) # Any changes made here should be reflected in the GCC+Darwin case below PGO_PROF_GEN_FLAG="-fprofile-instr-generate" PGO_PROF_USE_FLAG="-fprofile-instr-use=code.profclangd" LLVM_PROF_MERGER="${LLVM_PROFDATA} merge -output=code.profclangd *.profclangr" LLVM_PROF_FILE="LLVM_PROFILE_FILE=\"code-%p.profclangr\"" if test $LLVM_PROF_FOUND = not-found then LLVM_PROF_ERR=yes if test "${REQUIRE_PGO}" = "yes" then AC_MSG_ERROR([llvm-profdata is required for a --enable-optimizations build but could not be found.]) fi fi ;; *gcc*) case $ac_sys_system in Darwin*) PGO_PROF_GEN_FLAG="-fprofile-instr-generate" PGO_PROF_USE_FLAG="-fprofile-instr-use=code.profclangd" LLVM_PROF_MERGER="${LLVM_PROFDATA} merge -output=code.profclangd *.profclangr" LLVM_PROF_FILE="LLVM_PROFILE_FILE=\"code-%p.profclangr\"" if test "${LLVM_PROF_FOUND}" = "not-found" then LLVM_PROF_ERR=yes if test "${REQUIRE_PGO}" = "yes" then AC_MSG_ERROR([llvm-profdata is required for a --enable-optimizations build but could not be found.]) fi fi ;; *) PGO_PROF_GEN_FLAG="-fprofile-generate" PGO_PROF_USE_FLAG="-fprofile-use -fprofile-correction" LLVM_PROF_MERGER="true" LLVM_PROF_FILE="" ;; esac ;; *icc*) PGO_PROF_GEN_FLAG="-prof-gen" PGO_PROF_USE_FLAG="-prof-use" LLVM_PROF_MERGER="true" LLVM_PROF_FILE="" ;; esac # XXX Shouldn't the code above that fiddles with BASECFLAGS and OPT be # merged with this chunk of code? # Optimizer/debugger flags # ------------------------ # (The following bit of code is complicated enough - please keep things # indented properly. Just pretend you're editing Python code. ;-) # There are two parallel sets of case statements below, one that checks to # see if OPT was set and one that does BASECFLAGS setting based upon # compiler and platform. BASECFLAGS tweaks need to be made even if the # user set OPT. case $CC in *clang*) cc_is_clang=1 ;; *) if $CC --version 2>&1 | grep -q clang then cc_is_clang=1 else cc_is_clang= fi esac # tweak OPT based on compiler and platform, only if the user didn't set # it on the command line AC_SUBST(OPT) AC_SUBST(CFLAGS_ALIASING) if test "${OPT-unset}" = "unset" then case $GCC in yes) # For gcc 4.x we need to use -fwrapv so lets check if its supported if "$CC" -v --help 2>/dev/null |grep -- -fwrapv > /dev/null; then WRAP="-fwrapv" fi if test -n "${cc_is_clang}" then # Clang also needs -fwrapv WRAP="-fwrapv" # bpo-30104: disable strict aliasing to compile correctly dtoa.c, # see Makefile.pre.in for more information CFLAGS_ALIASING="-fno-strict-aliasing" fi case $ac_cv_prog_cc_g in yes) if test "$Py_DEBUG" = 'true' ; then # Optimization messes up debuggers, so turn it off for # debug builds. if "$CC" -v --help 2>/dev/null |grep -- -Og > /dev/null; then OPT="-g -Og -Wall" else OPT="-g -O0 -Wall" fi else OPT="-g $WRAP -O3 -Wall" fi ;; *) OPT="-O3 -Wall" ;; esac case $ac_sys_system in SCO_SV*) OPT="$OPT -m486 -DSCO5" ;; esac ;; *) OPT="-O" ;; esac fi AC_SUBST(BASECFLAGS) AC_SUBST(CFLAGS_NODIST) AC_SUBST(LDFLAGS_NODIST) # The -arch flags for universal builds on macOS UNIVERSAL_ARCH_FLAGS= AC_SUBST(UNIVERSAL_ARCH_FLAGS) # tweak BASECFLAGS based on compiler and platform case $GCC in yes) CFLAGS_NODIST="$CFLAGS_NODIST -std=c99" AC_MSG_CHECKING(for -Wextra) ac_save_cc="$CC" CC="$CC -Wextra -Werror" AC_CACHE_VAL(ac_cv_extra_warnings, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_extra_warnings=yes ],[ ac_cv_extra_warnings=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_extra_warnings) if test $ac_cv_extra_warnings = yes then CFLAGS_NODIST="$CFLAGS_NODIST -Wextra" fi # Python doesn't violate C99 aliasing rules, but older versions of # GCC produce warnings for legal Python code. Enable # -fno-strict-aliasing on versions of GCC that support but produce # warnings. See Issue3326 AC_MSG_CHECKING(whether $CC accepts and needs -fno-strict-aliasing) ac_save_cc="$CC" CC="$CC -fno-strict-aliasing" save_CFLAGS="$CFLAGS" AC_CACHE_VAL(ac_cv_no_strict_aliasing, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ CC="$ac_save_cc -fstrict-aliasing" CFLAGS="$CFLAGS -Werror -Wstrict-aliasing" AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[void f(int **x) {}]], [[double *x; f((int **) &x);]]) ],[ ac_cv_no_strict_aliasing=no ],[ ac_cv_no_strict_aliasing=yes ]) ],[ ac_cv_no_strict_aliasing=no ])) CFLAGS="$save_CFLAGS" CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_no_strict_aliasing) if test $ac_cv_no_strict_aliasing = yes then BASECFLAGS="$BASECFLAGS -fno-strict-aliasing" fi # ICC doesn't recognize the option, but only emits a warning ## XXX does it emit an unused result warning and can it be disabled? case "$CC" in *icc*) ac_cv_disable_unused_result_warning=no ;; *) AC_MSG_CHECKING(if we can turn off $CC unused result warning) ac_save_cc="$CC" CC="$CC -Wunused-result -Werror" save_CFLAGS="$CFLAGS" AC_CACHE_VAL(ac_cv_disable_unused_result_warning, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_disable_unused_result_warning=yes ],[ ac_cv_disable_unused_result_warning=no ])) CFLAGS="$save_CFLAGS" CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_disable_unused_result_warning) ;; esac if test $ac_cv_disable_unused_result_warning = yes then BASECFLAGS="$BASECFLAGS -Wno-unused-result" CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-result" fi AC_MSG_CHECKING(if we can turn off $CC unused parameter warning) ac_save_cc="$CC" CC="$CC -Wunused-parameter -Werror" AC_CACHE_VAL(ac_cv_disable_unused_parameter_warning, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_disable_unused_parameter_warning=yes ],[ ac_cv_disable_unused_parameter_warning=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_disable_unused_parameter_warning) if test $ac_cv_disable_unused_parameter_warning = yes then CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-parameter" fi AC_MSG_CHECKING(if we can turn off $CC missing field initializers warning) ac_save_cc="$CC" CC="$CC -Wmissing-field-initializers -Werror" AC_CACHE_VAL(ac_cv_disable_missing_field_initializers, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_disable_missing_field_initializers=yes ],[ ac_cv_disable_missing_field_initializers=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_disable_missing_field_initializers) if test $ac_cv_disable_missing_field_initializers = yes then CFLAGS_NODIST="$CFLAGS_NODIST -Wno-missing-field-initializers" fi AC_MSG_CHECKING(if we can turn on $CC mixed sign comparison warning) ac_save_cc="$CC" CC="$CC -Wsign-compare" save_CFLAGS="$CFLAGS" AC_CACHE_VAL(ac_cv_enable_sign_compare_warning, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_sign_compare_warning=yes ],[ ac_cv_enable_sign_compare_warning=no ])) CFLAGS="$save_CFLAGS" CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_enable_sign_compare_warning) if test $ac_cv_enable_sign_compare_warning = yes then BASECFLAGS="$BASECFLAGS -Wsign-compare" fi AC_MSG_CHECKING(if we can turn on $CC unreachable code warning) ac_save_cc="$CC" CC="$CC -Wunreachable-code" save_CFLAGS="$CFLAGS" AC_CACHE_VAL(ac_cv_enable_unreachable_code_warning, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_unreachable_code_warning=yes ],[ ac_cv_enable_unreachable_code_warning=no ])) CFLAGS="$save_CFLAGS" CC="$ac_save_cc" # Don't enable unreachable code warning in debug mode, since it usually # results in non-standard code paths. # Issue #24324: Unfortunately, the unreachable code warning does not work # correctly on gcc and has been silently removed from the compiler. # It is supported on clang but on OS X systems gcc may be an alias # for clang. Try to determine if the compiler is not really gcc and, # if so, only then enable the warning. if test $ac_cv_enable_unreachable_code_warning = yes && \ test "$Py_DEBUG" != "true" && \ test -z "`$CC --version 2>/dev/null | grep 'Free Software Foundation'`" then BASECFLAGS="$BASECFLAGS -Wunreachable-code" else ac_cv_enable_unreachable_code_warning=no fi AC_MSG_RESULT($ac_cv_enable_unreachable_code_warning) AC_MSG_CHECKING(if we can turn on $CC strict-prototypes warning) ac_save_cc="$CC" CC="$CC -Werror -Wstrict-prototypes" AC_CACHE_VAL(ac_cv_enable_enable_strict_prototypes_warning, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_strict_prototypes_warning=yes ],[ ac_cv_enable_strict_prototypes_warning=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_enable_strict_prototypes_warning) if test $ac_cv_enable_strict_prototypes_warning = yes then CFLAGS_NODIST="$CFLAGS_NODIST -Wstrict-prototypes" fi AC_MSG_CHECKING(if we can make implicit function declaration an error in $CC) ac_save_cc="$CC" CC="$CC -Werror=implicit-function-declaration" AC_CACHE_VAL(ac_cv_enable_implicit_function_declaration_error, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_implicit_function_declaration_error=yes ],[ ac_cv_enable_implicit_function_declaration_error=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_enable_implicit_function_declaration_error) if test $ac_cv_enable_implicit_function_declaration_error = yes then CFLAGS_NODIST="$CFLAGS_NODIST -Werror=implicit-function-declaration" fi AC_MSG_CHECKING(if we can use visibility in $CC) ac_save_cc="$CC" CC="$CC -fvisibility=hidden" AC_CACHE_VAL(ac_cv_enable_visibility, AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_visibility=yes ],[ ac_cv_enable_visibility=no ])) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_enable_visibility) if test $ac_cv_enable_visibility = yes then CFLAGS_NODIST="$CFLAGS_NODIST -fvisibility=hidden" fi # if using gcc on alpha, use -mieee to get (near) full IEEE 754 # support. Without this, treatment of subnormals doesn't follow # the standard. case $host in alpha*) BASECFLAGS="$BASECFLAGS -mieee" ;; esac case $ac_sys_system in SCO_SV*) BASECFLAGS="$BASECFLAGS -m486 -DSCO5" ;; Darwin*) # -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd # used to be here, but non-Apple gcc doesn't accept them. if test "${CC}" = gcc then AC_MSG_CHECKING(which compiler should be used) case "${UNIVERSALSDK}" in */MacOSX10.4u.sdk) # Build using 10.4 SDK, force usage of gcc when the # compiler is gcc, otherwise the user will get very # confusing error messages when building on OSX 10.6 CC=gcc-4.0 CPP=cpp-4.0 ;; esac AC_MSG_RESULT($CC) fi LIPO_INTEL64_FLAGS="" if test "${enable_universalsdk}" then case "$UNIVERSAL_ARCHS" in 32-bit) UNIVERSAL_ARCH_FLAGS="-arch ppc -arch i386" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="" ;; 64-bit) UNIVERSAL_ARCH_FLAGS="-arch ppc64 -arch x86_64" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="true" ;; all) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch ppc64 -arch x86_64" LIPO_32BIT_FLAGS="-extract ppc7400 -extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc" ;; universal2) UNIVERSAL_ARCH_FLAGS="-arch arm64 -arch x86_64" LIPO_32BIT_FLAGS="" LIPO_INTEL64_FLAGS="-extract x86_64" ARCH_RUN_32BIT="true" ;; intel) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch x86_64" LIPO_32BIT_FLAGS="-extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386" ;; intel-32) UNIVERSAL_ARCH_FLAGS="-arch i386" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="" ;; intel-64) UNIVERSAL_ARCH_FLAGS="-arch x86_64" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="true" ;; 3-way) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch x86_64" LIPO_32BIT_FLAGS="-extract ppc7400 -extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc" ;; *) AC_MSG_ERROR([proper usage is --with-universal-arch=universal2|32-bit|64-bit|all|intel|3-way]) ;; esac if test "${UNIVERSALSDK}" != "/" then CFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${CFLAGS}" LDFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${LDFLAGS}" CPPFLAGS="-isysroot ${UNIVERSALSDK} ${CPPFLAGS}" else CFLAGS="${UNIVERSAL_ARCH_FLAGS} ${CFLAGS}" LDFLAGS="${UNIVERSAL_ARCH_FLAGS} ${LDFLAGS}" fi fi # Calculate an appropriate deployment target for this build: # The deployment target value is used explicitly to enable certain # features are enabled (such as builtin libedit support for readline) # through the use of Apple's Availability Macros and is used as a # component of the string returned by distutils.get_platform(). # # Use the value from: # 1. the MACOSX_DEPLOYMENT_TARGET environment variable if specified # 2. the operating system version of the build machine if >= 10.6 # 3. If running on OS X 10.3 through 10.5, use the legacy tests # below to pick either 10.3, 10.4, or 10.5 as the target. # 4. If we are running on OS X 10.2 or earlier, good luck! AC_MSG_CHECKING(which MACOSX_DEPLOYMENT_TARGET to use) cur_target_major=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` cur_target_minor=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` cur_target="${cur_target_major}.${cur_target_minor}" if test ${cur_target_major} -eq 10 && \ test ${cur_target_minor} -ge 3 && \ test ${cur_target_minor} -le 5 then # OS X 10.3 through 10.5 cur_target=10.3 if test ${enable_universalsdk} then case "$UNIVERSAL_ARCHS" in all|3-way|intel|64-bit) # These configurations were first supported in 10.5 cur_target='10.5' ;; esac else if test `/usr/bin/arch` = "i386" then # 10.4 was the first release to support Intel archs cur_target="10.4" fi fi fi CONFIGURE_MACOSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET-${cur_target}} # Make sure that MACOSX_DEPLOYMENT_TARGET is set in the # environment with a value that is the same as what we'll use # in the Makefile to ensure that we'll get the same compiler # environment during configure and build time. MACOSX_DEPLOYMENT_TARGET="$CONFIGURE_MACOSX_DEPLOYMENT_TARGET" export MACOSX_DEPLOYMENT_TARGET EXPORT_MACOSX_DEPLOYMENT_TARGET='' AC_MSG_RESULT($MACOSX_DEPLOYMENT_TARGET) AC_MSG_CHECKING(if specified universal architectures work) AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[printf("%d", 42);]])], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_MSG_ERROR(check config.log and use the '--with-universal-archs' option) ]) # end of Darwin* tests ;; esac ;; *) case $ac_sys_system in OpenUNIX*|UnixWare*) BASECFLAGS="$BASECFLAGS -K pentium,host,inline,loop_unroll,alloca " ;; SCO_SV*) BASECFLAGS="$BASECFLAGS -belf -Ki486 -DSCO5" ;; esac ;; esac case "$CC" in *icc*) # ICC needs -fp-model strict or floats behave badly CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict" ;; *xlc*) CFLAGS_NODIST="$CFLAGS_NODIST -qalias=noansi -qmaxmem=-1" ;; esac if test "$assertions" = 'true'; then : else OPT="-DNDEBUG $OPT" fi if test "$ac_arch_flags" then BASECFLAGS="$BASECFLAGS $ac_arch_flags" fi # On some compilers, pthreads are available without further options # (e.g. MacOS X). On some of these systems, the compiler will not # complain if unaccepted options are passed (e.g. gcc on Mac OS X). # So we have to see first whether pthreads are available without # options before we can check whether -Kpthread improves anything. AC_MSG_CHECKING(whether pthreads are available without options) AC_CACHE_VAL(ac_cv_pthread_is_default, [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ ac_cv_pthread_is_default=yes ac_cv_kthread=no ac_cv_pthread=no ],[ac_cv_pthread_is_default=no],[ac_cv_pthread_is_default=no]) ]) AC_MSG_RESULT($ac_cv_pthread_is_default) if test $ac_cv_pthread_is_default = yes then ac_cv_kpthread=no else # -Kpthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -Kpthread, # so we need to run a program to see whether it really made the # function available. AC_MSG_CHECKING(whether $CC accepts -Kpthread) AC_CACHE_VAL(ac_cv_kpthread, [ac_save_cc="$CC" CC="$CC -Kpthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_kpthread=yes],[ac_cv_kpthread=no],[ac_cv_kpthread=no]) CC="$ac_save_cc"]) AC_MSG_RESULT($ac_cv_kpthread) fi if test $ac_cv_kpthread = no -a $ac_cv_pthread_is_default = no then # -Kthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -Kthread, # so we need to run a program to see whether it really made the # function available. AC_MSG_CHECKING(whether $CC accepts -Kthread) AC_CACHE_VAL(ac_cv_kthread, [ac_save_cc="$CC" CC="$CC -Kthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_kthread=yes],[ac_cv_kthread=no],[ac_cv_kthread=no]) CC="$ac_save_cc"]) AC_MSG_RESULT($ac_cv_kthread) fi if test $ac_cv_kthread = no -a $ac_cv_pthread_is_default = no then # -pthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -pthread, # so we need to run a program to see whether it really made the # function available. AC_MSG_CHECKING(whether $CC accepts -pthread) AC_CACHE_VAL(ac_cv_pthread, [ac_save_cc="$CC" CC="$CC -pthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_pthread=yes],[ac_cv_pthread=no],[ac_cv_pthread=no]) CC="$ac_save_cc"]) AC_MSG_RESULT($ac_cv_pthread) fi # If we have set a CC compiler flag for thread support then # check if it works for CXX, too. ac_cv_cxx_thread=no if test ! -z "$CXX" then AC_MSG_CHECKING(whether $CXX also accepts flags for thread support) ac_save_cxx="$CXX" if test "$ac_cv_kpthread" = "yes" then CXX="$CXX -Kpthread" ac_cv_cxx_thread=yes elif test "$ac_cv_kthread" = "yes" then CXX="$CXX -Kthread" ac_cv_cxx_thread=yes elif test "$ac_cv_pthread" = "yes" then CXX="$CXX -pthread" ac_cv_cxx_thread=yes fi if test $ac_cv_cxx_thread = yes then echo 'void foo();int main(){foo();}void foo(){}' > conftest.$ac_ext $CXX -c conftest.$ac_ext 2>&5 if $CXX -o conftest$ac_exeext conftest.$ac_objext 2>&5 \ && test -s conftest$ac_exeext && ./conftest$ac_exeext then ac_cv_cxx_thread=yes else ac_cv_cxx_thread=no fi rm -fr conftest* fi AC_MSG_RESULT($ac_cv_cxx_thread) fi CXX="$ac_save_cxx" dnl # check for ANSI or K&R ("traditional") preprocessor dnl AC_MSG_CHECKING(for C preprocessor type) dnl AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ dnl #define spam(name, doc) {#name, &name, #name "() -- " doc} dnl int foo; dnl struct {char *name; int *addr; char *doc;} desc = spam(foo, "something"); dnl ]], [[;]])],[cpp_type=ansi],[AC_DEFINE(HAVE_OLD_CPP) cpp_type=traditional]) dnl AC_MSG_RESULT($cpp_type) # checks for header files AC_HEADER_STDC AC_CHECK_HEADERS(asm/types.h crypt.h conio.h direct.h dlfcn.h errno.h \ fcntl.h grp.h \ ieeefp.h io.h langinfo.h libintl.h process.h pthread.h \ sched.h shadow.h signal.h stropts.h termios.h \ utime.h \ poll.h sys/devpoll.h sys/epoll.h sys/poll.h \ sys/audioio.h sys/xattr.h sys/bsdtty.h sys/event.h sys/file.h sys/ioctl.h \ sys/kern_control.h sys/loadavg.h sys/lock.h sys/mkdev.h sys/modem.h \ sys/param.h sys/random.h sys/select.h sys/sendfile.h sys/socket.h sys/statvfs.h \ sys/stat.h sys/syscall.h sys/sys_domain.h sys/termio.h sys/time.h \ sys/times.h sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h pty.h \ libutil.h sys/resource.h netpacket/packet.h sysexits.h bluetooth.h \ linux/tipc.h linux/random.h spawn.h util.h alloca.h endian.h \ sys/endian.h sys/sysmacros.h linux/memfd.h linux/wait.h sys/memfd.h sys/mman.h) AC_HEADER_DIRENT AC_HEADER_MAJOR # bluetooth/bluetooth.h has been known to not compile with -std=c99. # http://permalink.gmane.org/gmane.linux.bluez.kernel/22294 SAVE_CFLAGS=$CFLAGS CFLAGS="-std=c99 $CFLAGS" AC_CHECK_HEADERS(bluetooth/bluetooth.h) CFLAGS=$SAVE_CFLAGS # On Darwin (OS X) net/if.h requires sys/socket.h to be imported first. AC_CHECK_HEADERS([net/if.h], [], [], [#include #ifdef STDC_HEADERS # include # include #else # ifdef HAVE_STDLIB_H # include # endif #endif #ifdef HAVE_SYS_SOCKET_H # include #endif ]) # On Linux, netlink.h requires asm/types.h AC_CHECK_HEADERS(linux/netlink.h,,,[ #ifdef HAVE_ASM_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # On Linux, qrtr.h requires asm/types.h AC_CHECK_HEADERS(linux/qrtr.h,,,[ #ifdef HAVE_ASM_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) AC_CHECK_HEADERS(linux/vm_sockets.h,,,[ #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # On Linux, can.h, can/bcm.h, can/j1939.h, can/raw.h require sys/socket.h AC_CHECK_HEADERS(linux/can.h linux/can/bcm.h linux/can/j1939.h linux/can/raw.h,,,[ #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # checks for typedefs was_it_defined=no AC_MSG_CHECKING(for clock_t in time.h) AC_EGREP_HEADER(clock_t, time.h, was_it_defined=yes, [ AC_DEFINE(clock_t, long, [Define to 'long' if doesn't define.]) ]) AC_MSG_RESULT($was_it_defined) AC_MSG_CHECKING(for makedev) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if defined(MAJOR_IN_MKDEV) #include #elif defined(MAJOR_IN_SYSMACROS) #include #else #include #endif ]], [[ makedev(0, 0) ]]) ],[ac_cv_has_makedev=yes],[ac_cv_has_makedev=no]) AC_MSG_RESULT($ac_cv_has_makedev) if test "$ac_cv_has_makedev" = "yes"; then AC_DEFINE(HAVE_MAKEDEV, 1, [Define this if you have the makedev macro.]) fi # byte swapping AC_MSG_CHECKING(for le64toh) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_ENDIAN_H #include #elif defined(HAVE_SYS_ENDIAN_H) #include #endif ]], [[ le64toh(1) ]]) ],[ac_cv_has_le64toh=yes],[ac_cv_has_le64toh=no]) AC_MSG_RESULT($ac_cv_has_le64toh) if test "$ac_cv_has_le64toh" = "yes"; then AC_DEFINE(HAVE_HTOLE64, 1, [Define this if you have le64toh()]) fi use_lfs=yes # Don't use largefile support for GNU/Hurd case $ac_sys_system in GNU*) use_lfs=no esac if test "$use_lfs" = "yes"; then # Two defines needed to enable largefile support on various platforms # These may affect some typedefs case $ac_sys_system/$ac_sys_release in AIX*) AC_DEFINE(_LARGE_FILES, 1, [This must be defined on AIX systems to enable large file support.]) ;; esac AC_DEFINE(_LARGEFILE_SOURCE, 1, [This must be defined on some systems to enable large file support.]) AC_DEFINE(_FILE_OFFSET_BITS, 64, [This must be set to 64 on some systems to enable large file support.]) fi # Add some code to confdefs.h so that the test for off_t works on SCO cat >> confdefs.h <<\EOF #if defined(SCO_DS) #undef _OFF_T #endif EOF # Type availability checks AC_TYPE_MODE_T AC_TYPE_OFF_T AC_TYPE_PID_T AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[assume C89 semantics that RETSIGTYPE is always void]) AC_TYPE_SIZE_T AC_TYPE_UID_T AC_CHECK_TYPE(ssize_t, AC_DEFINE(HAVE_SSIZE_T, 1, [Define if your compiler provides ssize_t]),,) AC_CHECK_TYPE(__uint128_t, AC_DEFINE(HAVE_GCC_UINT128_T, 1, [Define if your compiler provides __uint128_t]),,) # Sizes of various common basic types # ANSI C requires sizeof(char) == 1, so no need to check it AC_CHECK_SIZEOF(int, 4) AC_CHECK_SIZEOF(long, 4) AC_CHECK_SIZEOF(long long, 8) AC_CHECK_SIZEOF(void *, 4) AC_CHECK_SIZEOF(short, 2) AC_CHECK_SIZEOF(float, 4) AC_CHECK_SIZEOF(double, 8) AC_CHECK_SIZEOF(fpos_t, 4) AC_CHECK_SIZEOF(size_t, 4) AC_CHECK_SIZEOF(pid_t, 4) AC_CHECK_SIZEOF(uintptr_t) AC_TYPE_LONG_DOUBLE AC_CHECK_SIZEOF(long double, 16) AC_CHECK_SIZEOF(_Bool, 1) AC_CHECK_SIZEOF(off_t, [], [ #ifdef HAVE_SYS_TYPES_H #include #endif ]) AC_MSG_CHECKING(whether to enable large file support) if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \ "$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then AC_DEFINE(HAVE_LARGEFILE_SUPPORT, 1, [Defined to enable large file support when an off_t is bigger than a long and long long is at least as big as an off_t. 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AC_SUBST(SHLIB_SUFFIX) AC_SUBST(LDSHARED) AC_SUBST(LDCXXSHARED) AC_SUBST(BLDSHARED) AC_SUBST(CCSHARED) AC_SUBST(LINKFORSHARED) # SHLIB_SUFFIX is the extension of shared libraries `(including the dot!) # -- usually .so, .sl on HP-UX, .dll on Cygwin AC_MSG_CHECKING(the extension of shared libraries) if test -z "$SHLIB_SUFFIX"; then case $ac_sys_system in hp*|HP*) case `uname -m` in ia64) SHLIB_SUFFIX=.so;; *) SHLIB_SUFFIX=.sl;; esac ;; CYGWIN*) SHLIB_SUFFIX=.dll;; *) SHLIB_SUFFIX=.so;; esac fi AC_MSG_RESULT($SHLIB_SUFFIX) # LDSHARED is the ld *command* used to create shared library # -- "cc -G" on SunOS 5.x. # (Shared libraries in this instance are shared modules to be loaded into # Python, as opposed to building Python itself as a shared library.) 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AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) # 'Real Time' functions on Solaris # posix4 on Solaris 2.6 # pthread (first!) on Linux AC_SEARCH_LIBS(sem_init, pthread rt posix4) # check if we need libintl for locale functions AC_CHECK_LIB(intl, textdomain, [AC_DEFINE(WITH_LIBINTL, 1, [Define to 1 if libintl is needed for locale functions.]) LIBS="-lintl $LIBS"]) # checks for system dependent C++ extensions support case "$ac_sys_system" in AIX*) AC_MSG_CHECKING(for genuine AIX C++ extensions support) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[#include ]], [[loadAndInit("", 0, "")]]) ],[ AC_DEFINE(AIX_GENUINE_CPLUSPLUS, 1, [Define for AIX if your compiler is a genuine IBM xlC/xlC_r and you want support for AIX C++ shared extension modules.]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) ]) dnl The AIX_BUILDDATE is obtained from the kernel fileset - bos.mp64 # BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the platform_tag # of the AIX system used to build/package Python executable. This tag serves # as a baseline for bdist module packages AC_MSG_CHECKING(for the system builddate) AIX_BUILDDATE=$(lslpp -Lcq bos.mp64 | awk -F: '{ print $NF }') AC_DEFINE_UNQUOTED([AIX_BUILDDATE], [$AIX_BUILDDATE], [BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the PEP425 tag of the build system.]) AC_MSG_RESULT($AIX_BUILDDATE) ;; *) ;; esac # check for systems that require aligned memory access AC_MSG_CHECKING(aligned memory access is required) AC_CACHE_VAL(ac_cv_aligned_required, [AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main() { char s[16]; int i, *p1, *p2; for (i=0; i < 16; i++) s[i] = i; p1 = (int*)(s+1); p2 = (int*)(s+2); if (*p1 == *p2) return 1; return 0; }]])], [ac_cv_aligned_required=no], [ac_cv_aligned_required=yes], [ac_cv_aligned_required=yes]) ]) AC_MSG_RESULT($ac_cv_aligned_required) if test "$ac_cv_aligned_required" = yes ; then AC_DEFINE([HAVE_ALIGNED_REQUIRED], [1], [Define if aligned memory access is required]) fi # str, bytes and memoryview hash algorithm AH_TEMPLATE(Py_HASH_ALGORITHM, [Define hash algorithm for str, bytes and memoryview. SipHash24: 1, FNV: 2, externally defined: 0]) AC_MSG_CHECKING(for --with-hash-algorithm) dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output AC_ARG_WITH(hash_algorithm, AS_HELP_STRING([--with-hash-algorithm=@<:@fnv|siphash24@:>@], [select hash algorithm for use in Python/pyhash.c (default is SipHash24)]), [ AC_MSG_RESULT($withval) case "$withval" in siphash24) AC_DEFINE(Py_HASH_ALGORITHM, 1) ;; fnv) AC_DEFINE(Py_HASH_ALGORITHM, 2) ;; *) AC_MSG_ERROR([unknown hash algorithm '$withval']) ;; esac ], [AC_MSG_RESULT(default)]) validate_tzpath() { # Checks that each element of hte path is an absolute path if test -z "$1"; then # Empty string is allowed: it indicates no system TZPATH return 0 fi # Bad paths are those that don't start with / dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output if ( echo $1 | grep -qE '(^|:)(@<:@^/@:>@|$)' ); then AC_MSG_ERROR([--with-tzpath must contain only absolute paths, not $1]) return 1; fi } TZPATH="/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo" AC_MSG_CHECKING(for --with-tzpath) AC_ARG_WITH(tzpath, AS_HELP_STRING([--with-tzpath=] [Select the default time zone search path for zoneinfo.TZPATH]), [ case "$withval" in yes) AC_MSG_ERROR([--with-tzpath requires a value]) ;; *) validate_tzpath "$withval" TZPATH="$withval" AC_MSG_RESULT("$withval") ;; esac ], [validate_tzpath "$TZPATH" AC_MSG_RESULT("$TZPATH")]) AC_SUBST(TZPATH) AC_MSG_CHECKING(for --with-address-sanitizer) AC_ARG_WITH(address_sanitizer, AS_HELP_STRING([--with-address-sanitizer], [enable AddressSanitizer memory error detector, 'asan' (default is no)]), [ AC_MSG_RESULT($withval) BASECFLAGS="-fsanitize=address -fno-omit-frame-pointer $BASECFLAGS" LDFLAGS="-fsanitize=address $LDFLAGS" # ASan works by controlling memory allocation, our own malloc interferes. with_pymalloc="no" ], [AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for --with-memory-sanitizer) AC_ARG_WITH(memory_sanitizer, AS_HELP_STRING([--with-memory-sanitizer], [enable MemorySanitizer allocation error detector, 'msan' (default is no)]), [ AC_MSG_RESULT($withval) BASECFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer $BASECFLAGS" LDFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 $LDFLAGS" # MSan works by controlling memory allocation, our own malloc interferes. with_pymalloc="no" ], [AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for --with-undefined-behavior-sanitizer) AC_ARG_WITH(undefined_behavior_sanitizer, AS_HELP_STRING([--with-undefined-behavior-sanitizer], [enable UndefinedBehaviorSanitizer undefined behaviour detector, 'ubsan' (default is no)]), [ AC_MSG_RESULT($withval) BASECFLAGS="-fsanitize=undefined $BASECFLAGS" LDFLAGS="-fsanitize=undefined $LDFLAGS" ], [AC_MSG_RESULT(no)]) # Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl. AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4 AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets AC_MSG_CHECKING(for --with-libs) AC_ARG_WITH(libs, AS_HELP_STRING([--with-libs='lib1 ...'], [link against additional libs (default is no)]), [ AC_MSG_RESULT($withval) LIBS="$withval $LIBS" ], [AC_MSG_RESULT(no)]) PKG_PROG_PKG_CONFIG # Check for use of the system expat library AC_MSG_CHECKING(for --with-system-expat) AC_ARG_WITH(system_expat, AS_HELP_STRING([--with-system-expat], [build pyexpat module using an installed expat library, see Doc/library/pyexpat.rst (default is no)]), [], [with_system_expat="no"]) AC_MSG_RESULT($with_system_expat) # Check for use of the system libffi library AC_MSG_CHECKING(for --with-system-ffi) AC_ARG_WITH(system_ffi, AS_HELP_STRING([--with-system-ffi], [build _ctypes module using an installed ffi library, see Doc/library/ctypes.rst (default is system-dependent)]),,,) if test "$ac_sys_system" = "Darwin" then case "$with_system_ffi" in "") with_system_ffi="no" ;; yes|no) ;; *) AC_MSG_ERROR([--with-system-ffi accepts no arguments]) ;; esac AC_MSG_RESULT($with_system_ffi) else AC_MSG_RESULT(yes) if test "$with_system_ffi" != "" then AC_MSG_WARN([--with(out)-system-ffi is ignored on this platform]) fi with_system_ffi="yes" fi if test "$with_system_ffi" = "yes" && test -n "$PKG_CONFIG"; then LIBFFI_INCLUDEDIR="`"$PKG_CONFIG" libffi --cflags-only-I 2>/dev/null | sed -e 's/^-I//;s/ *$//'`" else LIBFFI_INCLUDEDIR="" fi AC_SUBST(LIBFFI_INCLUDEDIR) # Check for use of the system libmpdec library AC_MSG_CHECKING(for --with-system-libmpdec) AC_ARG_WITH(system_libmpdec, AS_HELP_STRING([--with-system-libmpdec], [build _decimal module using an installed libmpdec library, see Doc/library/decimal.rst (default is no)]), [], [with_system_libmpdec="no"]) AC_MSG_RESULT($with_system_libmpdec) # Check whether _decimal should use a coroutine-local or thread-local context AC_MSG_CHECKING(for --with-decimal-contextvar) AC_ARG_WITH(decimal_contextvar, AS_HELP_STRING([--with-decimal-contextvar], [build _decimal module using a coroutine-local rather than a thread-local context (default is yes)]), [], [with_decimal_contextvar="yes"]) if test "$with_decimal_contextvar" != "no" then AC_DEFINE(WITH_DECIMAL_CONTEXTVAR, 1, [Define if you want build the _decimal module using a coroutine-local rather than a thread-local context]) fi AC_MSG_RESULT($with_decimal_contextvar) # Check for support for loadable sqlite extensions AC_MSG_CHECKING(for --enable-loadable-sqlite-extensions) AC_ARG_ENABLE(loadable-sqlite-extensions, AS_HELP_STRING([--enable-loadable-sqlite-extensions], [support loadable extensions in _sqlite module, see Doc/library/sqlite3.rst (default is no)]), [], [enable_loadable_sqlite_extensions="no"]) AC_MSG_RESULT($enable_loadable_sqlite_extensions) # Check for --with-tcltk-includes=path and --with-tcltk-libs=path AC_SUBST(TCLTK_INCLUDES) AC_SUBST(TCLTK_LIBS) AC_MSG_CHECKING(for --with-tcltk-includes) AC_ARG_WITH(tcltk-includes, AS_HELP_STRING([--with-tcltk-includes='-I...'], [override search for Tcl and Tk include files]), [], [with_tcltk_includes="default"]) AC_MSG_RESULT($with_tcltk_includes) AC_MSG_CHECKING(for --with-tcltk-libs) AC_ARG_WITH(tcltk-libs, AS_HELP_STRING([--with-tcltk-libs='-L...'], [override search for Tcl and Tk libs]), [], [with_tcltk_libs="default"]) AC_MSG_RESULT($with_tcltk_libs) if test "x$with_tcltk_includes" = xdefault || test "x$with_tcltk_libs" = xdefault then if test "x$with_tcltk_includes" != "x$with_tcltk_libs" then AC_MSG_ERROR([use both --with-tcltk-includes='...' and --with-tcltk-libs='...' or neither]) fi TCLTK_INCLUDES="" TCLTK_LIBS="" else TCLTK_INCLUDES="$with_tcltk_includes" TCLTK_LIBS="$with_tcltk_libs" fi # Check for --with-dbmliborder AC_MSG_CHECKING(for --with-dbmliborder) AC_ARG_WITH(dbmliborder, AS_HELP_STRING([--with-dbmliborder=db1:db2:...], [override order to check db backends for dbm; a valid value is a colon separated string with the backend names `ndbm', `gdbm' and `bdb'.]), [ if test x$with_dbmliborder = xyes then AC_MSG_ERROR([proper usage is --with-dbmliborder=db1:db2:...]) else for db in `echo $with_dbmliborder | sed 's/:/ /g'`; do if test x$db != xndbm && test x$db != xgdbm && test x$db != xbdb then AC_MSG_ERROR([proper usage is --with-dbmliborder=db1:db2:...]) fi done fi]) AC_MSG_RESULT($with_dbmliborder) # Templates for things AC_DEFINEd more than once. # For a single AC_DEFINE, no template is needed. AH_TEMPLATE(_REENTRANT, [Define to force use of thread-safe errno, h_errno, and other functions]) if test "$ac_cv_pthread_is_default" = yes then # Defining _REENTRANT on system with POSIX threads should not hurt. AC_DEFINE(_REENTRANT) posix_threads=yes if test "$ac_sys_system" = "SunOS"; then CFLAGS="$CFLAGS -D_REENTRANT" fi elif test "$ac_cv_kpthread" = "yes" then CC="$CC -Kpthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kpthread" fi posix_threads=yes elif test "$ac_cv_kthread" = "yes" then CC="$CC -Kthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kthread" fi posix_threads=yes elif test "$ac_cv_pthread" = "yes" then CC="$CC -pthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -pthread" fi posix_threads=yes else if test ! -z "$withval" -a -d "$withval" then LDFLAGS="$LDFLAGS -L$withval" fi # According to the POSIX spec, a pthreads implementation must # define _POSIX_THREADS in unistd.h. Some apparently don't # (e.g. gnu pth with pthread emulation) AC_MSG_CHECKING(for _POSIX_THREADS in unistd.h) AC_EGREP_CPP(yes, [ #include #ifdef _POSIX_THREADS yes #endif ], unistd_defines_pthreads=yes, unistd_defines_pthreads=no) AC_MSG_RESULT($unistd_defines_pthreads) AC_DEFINE(_REENTRANT) # Just looking for pthread_create in libpthread is not enough: # on HP/UX, pthread.h renames pthread_create to a different symbol name. # So we really have to include pthread.h, and then link. _libs=$LIBS LIBS="$LIBS -lpthread" AC_MSG_CHECKING([for pthread_create in -lpthread]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include void * start_routine (void *arg) { exit (0); }]], [[ pthread_create (NULL, NULL, start_routine, NULL)]])],[ AC_MSG_RESULT(yes) posix_threads=yes ],[ LIBS=$_libs AC_CHECK_FUNC(pthread_detach, [ posix_threads=yes ],[ AC_CHECK_LIB(pthreads, pthread_create, [ posix_threads=yes LIBS="$LIBS -lpthreads" ], [ AC_CHECK_LIB(c_r, pthread_create, [ posix_threads=yes LIBS="$LIBS -lc_r" ], [ AC_CHECK_LIB(pthread, __pthread_create_system, [ posix_threads=yes LIBS="$LIBS -lpthread" ], [ AC_CHECK_LIB(cma, pthread_create, [ posix_threads=yes LIBS="$LIBS -lcma" ],[ AC_MSG_ERROR([could not find pthreads on your system]) ]) ])])])])]) AC_CHECK_LIB(mpc, usconfig, [ LIBS="$LIBS -lmpc" ]) fi if test "$posix_threads" = "yes"; then if test "$unistd_defines_pthreads" = "no"; then AC_DEFINE(_POSIX_THREADS, 1, [Define if you have POSIX threads, and your system does not define that.]) fi # Bug 662787: Using semaphores causes unexplicable hangs on Solaris 8. case $ac_sys_system/$ac_sys_release in SunOS/5.6) AC_DEFINE(HAVE_PTHREAD_DESTRUCTOR, 1, [Defined for Solaris 2.6 bug in pthread header.]) ;; SunOS/5.8) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; AIX/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; esac AC_MSG_CHECKING(if PTHREAD_SCOPE_SYSTEM is supported) AC_CACHE_VAL(ac_cv_pthread_system_supported, [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void *foo(void *parm) { return NULL; } main() { pthread_attr_t attr; pthread_t id; if (pthread_attr_init(&attr)) return (-1); if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1); if (pthread_create(&id, &attr, foo, NULL)) return (-1); return (0); }]])], [ac_cv_pthread_system_supported=yes], [ac_cv_pthread_system_supported=no], [ac_cv_pthread_system_supported=no]) ]) AC_MSG_RESULT($ac_cv_pthread_system_supported) if test "$ac_cv_pthread_system_supported" = "yes"; then AC_DEFINE(PTHREAD_SYSTEM_SCHED_SUPPORTED, 1, [Defined if PTHREAD_SCOPE_SYSTEM supported.]) fi AC_CHECK_FUNCS(pthread_sigmask, [case $ac_sys_system in CYGWIN*) AC_DEFINE(HAVE_BROKEN_PTHREAD_SIGMASK, 1, [Define if pthread_sigmask() does not work on your system.]) ;; esac]) AC_CHECK_FUNCS(pthread_getcpuclockid) fi # Check for enable-ipv6 AH_TEMPLATE(ENABLE_IPV6, [Define if --enable-ipv6 is specified]) AC_MSG_CHECKING([if --enable-ipv6 is specified]) AC_ARG_ENABLE(ipv6, AS_HELP_STRING([--enable-ipv6], [enable ipv6 (with ipv4) support, see Doc/library/socket.rst (default is yes if supported)]), [ case "$enableval" in no) AC_MSG_RESULT(no) ipv6=no ;; *) AC_MSG_RESULT(yes) AC_DEFINE(ENABLE_IPV6) ipv6=yes ;; esac ], [ dnl the check does not work on cross compilation case... AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* AF_INET6 available check */ #include #include ]], [[int domain = AF_INET6;]])],[ AC_MSG_RESULT(yes) ipv6=yes ],[ AC_MSG_RESULT(no) ipv6=no ]) if test "$ipv6" = "yes"; then AC_MSG_CHECKING(if RFC2553 API is available) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr_in6 x; x.sin6_scope_id;]]) ],[ AC_MSG_RESULT(yes) ipv6=yes ],[ AC_MSG_RESULT(no, IPv6 disabled) ipv6=no ]) fi if test "$ipv6" = "yes"; then AC_DEFINE(ENABLE_IPV6) fi ]) ipv6type=unknown ipv6lib=none ipv6trylibc=no if test "$ipv6" = "yes"; then AC_MSG_CHECKING([ipv6 stack type]) for i in inria kame linux-glibc linux-inet6 solaris toshiba v6d zeta; do case $i in inria) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef IPV6_INRIA_VERSION yes #endif], [ipv6type=$i]) ;; kame) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef __KAME__ yes #endif], [ipv6type=$i; ipv6lib=inet6 ipv6libdir=/usr/local/v6/lib ipv6trylibc=yes]) ;; linux-glibc) dnl http://www.v6.linux.or.jp/ AC_EGREP_CPP(yes, [ #include #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)) yes #endif], [ipv6type=$i; ipv6trylibc=yes]) ;; linux-inet6) dnl http://www.v6.linux.or.jp/ if test -d /usr/inet6; then ipv6type=$i ipv6lib=inet6 ipv6libdir=/usr/inet6/lib BASECFLAGS="-I/usr/inet6/include $BASECFLAGS" fi ;; solaris) if test -f /etc/netconfig; then if $GREP -q tcp6 /etc/netconfig; then ipv6type=$i ipv6trylibc=yes fi fi ;; toshiba) AC_EGREP_CPP(yes, [ #include #ifdef _TOSHIBA_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; v6d) AC_EGREP_CPP(yes, [ #include #ifdef __V6D__ yes #endif], [ipv6type=$i; ipv6lib=v6; ipv6libdir=/usr/local/v6/lib; BASECFLAGS="-I/usr/local/v6/include $BASECFLAGS"]) ;; zeta) AC_EGREP_CPP(yes, [ #include #ifdef _ZETA_MINAMI_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; esac if test "$ipv6type" != "unknown"; then break fi done AC_MSG_RESULT($ipv6type) fi if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then LIBS="-L$ipv6libdir -l$ipv6lib $LIBS" echo "using lib$ipv6lib" else if test $ipv6trylibc = "yes"; then echo "using libc" else echo 'Fatal: no $ipv6lib library found. cannot continue.' echo "You need to fetch lib$ipv6lib.a from appropriate" echo 'ipv6 kit and compile beforehand.' exit 1 fi fi fi AC_MSG_CHECKING(for CAN_RAW_FD_FRAMES) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* CAN_RAW_FD_FRAMES available check */ #include ]], [[int can_raw_fd_frames = CAN_RAW_FD_FRAMES;]])],[ AC_DEFINE(HAVE_LINUX_CAN_RAW_FD_FRAMES, 1, [Define if compiling using Linux 3.6 or later.]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for CAN_RAW_JOIN_FILTERS) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int can_raw_join_filters = CAN_RAW_JOIN_FILTERS;]])],[ AC_DEFINE(HAVE_LINUX_CAN_RAW_JOIN_FILTERS, 1, [Define if compiling using Linux 4.1 or later.]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) ]) # Check for --with-doc-strings AC_MSG_CHECKING(for --with-doc-strings) AC_ARG_WITH(doc-strings, AS_HELP_STRING([--with-doc-strings], [enable documentation strings (default is yes)])) if test -z "$with_doc_strings" then with_doc_strings="yes" fi if test "$with_doc_strings" != "no" then AC_DEFINE(WITH_DOC_STRINGS, 1, [Define if you want documentation strings in extension modules]) fi AC_MSG_RESULT($with_doc_strings) # Check for Python-specific malloc support AC_MSG_CHECKING(for --with-pymalloc) AC_ARG_WITH(pymalloc, AS_HELP_STRING([--with-pymalloc], [enable specialized mallocs (default is yes)])) if test -z "$with_pymalloc" then with_pymalloc="yes" fi if test "$with_pymalloc" != "no" then AC_DEFINE(WITH_PYMALLOC, 1, [Define if you want to compile in Python-specific mallocs]) fi AC_MSG_RESULT($with_pymalloc) # Check for --with-c-locale-coercion AC_MSG_CHECKING(for --with-c-locale-coercion) AC_ARG_WITH(c-locale-coercion, AS_HELP_STRING([--with-c-locale-coercion], [enable C locale coercion to a UTF-8 based locale (default is yes)])) if test -z "$with_c_locale_coercion" then with_c_locale_coercion="yes" fi if test "$with_c_locale_coercion" != "no" then AC_DEFINE(PY_COERCE_C_LOCALE, 1, [Define if you want to coerce the C locale to a UTF-8 based locale]) fi AC_MSG_RESULT($with_c_locale_coercion) # Check for Valgrind support AC_MSG_CHECKING([for --with-valgrind]) AC_ARG_WITH([valgrind], AS_HELP_STRING([--with-valgrind], [enable Valgrind support (default is no)]),, with_valgrind=no) AC_MSG_RESULT([$with_valgrind]) if test "$with_valgrind" != no; then AC_CHECK_HEADER([valgrind/valgrind.h], [AC_DEFINE([WITH_VALGRIND], 1, [Define if you want pymalloc to be disabled when running under valgrind])], [AC_MSG_ERROR([Valgrind support requested but headers not available])] ) OPT="-DDYNAMIC_ANNOTATIONS_ENABLED=1 $OPT" fi # Check for DTrace support AC_MSG_CHECKING(for --with-dtrace) AC_ARG_WITH(dtrace, AS_HELP_STRING([--with-dtrace],[enable DTrace support (default is no)]),, with_dtrace=no) AC_MSG_RESULT($with_dtrace) AC_SUBST(DTRACE) AC_SUBST(DFLAGS) AC_SUBST(DTRACE_HEADERS) AC_SUBST(DTRACE_OBJS) DTRACE= DTRACE_HEADERS= DTRACE_OBJS= if test "$with_dtrace" = "yes" then AC_PATH_PROG(DTRACE, [dtrace], [not found]) if test "$DTRACE" = "not found"; then AC_MSG_ERROR([dtrace command not found on \$PATH]) fi AC_DEFINE(WITH_DTRACE, 1, [Define if you want to compile in DTrace support]) DTRACE_HEADERS="Include/pydtrace_probes.h" # On OS X, DTrace providers do not need to be explicitly compiled and # linked into the binary. Correspondingly, dtrace(1) is missing the ELF # generation flag '-G'. We check for presence of this flag, rather than # hardcoding support by OS, in the interest of robustness. AC_CACHE_CHECK([whether DTrace probes require linking], [ac_cv_dtrace_link], [dnl ac_cv_dtrace_link=no echo 'BEGIN{}' > conftest.d "$DTRACE" $DFLAGS -G -s conftest.d -o conftest.o > /dev/null 2>&1 && \ ac_cv_dtrace_link=yes ]) if test "$ac_cv_dtrace_link" = "yes"; then DTRACE_OBJS="Python/pydtrace.o" fi fi # -I${DLINCLDIR} is added to the compile rule for importdl.o AC_SUBST(DLINCLDIR) DLINCLDIR=. # the dlopen() function means we might want to use dynload_shlib.o. some # platforms, such as AIX, have dlopen(), but don't want to use it. AC_CHECK_FUNCS(dlopen) # DYNLOADFILE specifies which dynload_*.o file we will use for dynamic # loading of modules. AC_SUBST(DYNLOADFILE) AC_MSG_CHECKING(DYNLOADFILE) if test -z "$DYNLOADFILE" then case $ac_sys_system/$ac_sys_release in AIX*) # Use dynload_shlib.c and dlopen() if we have it; otherwise dynload_aix.c if test "$ac_cv_func_dlopen" = yes then DYNLOADFILE="dynload_shlib.o" else DYNLOADFILE="dynload_aix.o" fi ;; hp*|HP*) DYNLOADFILE="dynload_hpux.o";; *) # use dynload_shlib.c and dlopen() if we have it; otherwise stub # out any dynamic loading if test "$ac_cv_func_dlopen" = yes then DYNLOADFILE="dynload_shlib.o" else DYNLOADFILE="dynload_stub.o" fi ;; esac fi AC_MSG_RESULT($DYNLOADFILE) if test "$DYNLOADFILE" != "dynload_stub.o" then AC_DEFINE(HAVE_DYNAMIC_LOADING, 1, [Defined when any dynamic module loading is enabled.]) fi # MACHDEP_OBJS can be set to platform-specific object files needed by Python AC_SUBST(MACHDEP_OBJS) AC_MSG_CHECKING(MACHDEP_OBJS) if test -z "$MACHDEP_OBJS" then MACHDEP_OBJS=$extra_machdep_objs else MACHDEP_OBJS="$MACHDEP_OBJS $extra_machdep_objs" fi if test -z "$MACHDEP_OBJS"; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$MACHDEP_OBJS]) fi # checks for library functions AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \ clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \ explicit_memset faccessat fchmod fchmodat fchown fchownat \ fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \ futimens futimes gai_strerror getentropy \ getgrgid_r getgrnam_r \ getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \ getpriority getresuid getresgid getpwent getpwnam_r getpwuid_r getspnam getspent getsid getwd \ if_nameindex \ initgroups kill killpg lchown lockf linkat lstat lutimes mmap \ memrchr mbrtowc mkdirat mkfifo \ madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \ posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \ pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \ readlink readlinkat readv realpath renameat \ sem_open sem_timedwait sem_clockwait sem_getvalue sem_unlink sendfile setegid seteuid \ setgid sethostname \ setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \ sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \ sched_rr_get_interval \ sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \ sigtimedwait sigwait sigwaitinfo snprintf strftime strlcpy strsignal symlinkat sync \ sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \ truncate uname unlinkat utimensat utimes waitid waitpid wait3 wait4 \ wcscoll wcsftime wcsxfrm wmemcmp writev _getpty rtpSpawn) # Force lchmod off for Linux. Linux disallows changing the mode of symbolic # links. Some libc implementations have a stub lchmod implementation that always # returns an error. if test "$MACHDEP" != linux; then AC_CHECK_FUNCS(lchmod) fi AC_CHECK_DECL(dirfd, AC_DEFINE(HAVE_DIRFD, 1, Define if you have the 'dirfd' function or macro.), , [#include #include ]) # For some functions, having a definition is not sufficient, since # we want to take their address. AC_MSG_CHECKING(for chroot) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=chroot]])], [AC_DEFINE(HAVE_CHROOT, 1, Define if you have the 'chroot' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for link) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=link]])], [AC_DEFINE(HAVE_LINK, 1, Define if you have the 'link' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for symlink) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=symlink]])], [AC_DEFINE(HAVE_SYMLINK, 1, Define if you have the 'symlink' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for fchdir) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=fchdir]])], [AC_DEFINE(HAVE_FCHDIR, 1, Define if you have the 'fchdir' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for fsync) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=fsync]])], [AC_DEFINE(HAVE_FSYNC, 1, Define if you have the 'fsync' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for fdatasync) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=fdatasync]])], [AC_DEFINE(HAVE_FDATASYNC, 1, Define if you have the 'fdatasync' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for epoll) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=epoll_create]])], [AC_DEFINE(HAVE_EPOLL, 1, Define if you have the 'epoll' functions.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for epoll_create1) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=epoll_create1]])], [AC_DEFINE(HAVE_EPOLL_CREATE1, 1, Define if you have the 'epoll_create1' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for kqueue) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[int x=kqueue()]])], [AC_DEFINE(HAVE_KQUEUE, 1, Define if you have the 'kqueue' functions.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for prlimit) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[void *x=prlimit]])], [AC_DEFINE(HAVE_PRLIMIT, 1, Define if you have the 'prlimit' functions.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for _dyld_shared_cache_contains_path) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=_dyld_shared_cache_contains_path]])], [AC_DEFINE(HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH, 1, Define if you have the '_dyld_shared_cache_contains_path' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for memfd_create) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_SYS_MMAN_H #include #endif #ifdef HAVE_SYS_MEMFD_H #include #endif ]], [[void *x=memfd_create]])], [AC_DEFINE(HAVE_MEMFD_CREATE, 1, Define if you have the 'memfd_create' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) # On some systems (eg. FreeBSD 5), we would find a definition of the # functions ctermid_r, setgroups in the library, but no prototype # (e.g. because we use _XOPEN_SOURCE). See whether we can take their # address to avoid compiler warnings and potential miscompilations # because of the missing prototypes. AC_MSG_CHECKING(for ctermid_r) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[void* p = ctermid_r]])], [AC_DEFINE(HAVE_CTERMID_R, 1, Define if you have the 'ctermid_r' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_CACHE_CHECK([for flock declaration], [ac_cv_flock_decl], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [void* p = flock] )], [ac_cv_flock_decl=yes], [ac_cv_flock_decl=no] ) ]) if test "x${ac_cv_flock_decl}" = xyes; then AC_CHECK_FUNCS(flock,, AC_CHECK_LIB(bsd,flock, [AC_DEFINE(HAVE_FLOCK) AC_DEFINE(FLOCK_NEEDS_LIBBSD, 1, Define if flock needs to be linked with bsd library.) ]) ) fi AC_MSG_CHECKING(for getpagesize) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[void* p = getpagesize]])], [AC_DEFINE(HAVE_GETPAGESIZE, 1, Define if you have the 'getpagesize' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for broken unsetenv) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int res = unsetenv("DUMMY")]])], [AC_MSG_RESULT(no)], [AC_DEFINE(HAVE_BROKEN_UNSETENV, 1, Define if `unsetenv` does not return an int.) AC_MSG_RESULT(yes) ]) dnl check for true AC_CHECK_PROGS(TRUE, true, /bin/true) dnl On some systems (e.g. Solaris 9), hstrerror and inet_aton are in -lresolv dnl On others, they are in the C library, so we to take no action AC_CHECK_LIB(c, inet_aton, [$ac_cv_prog_TRUE], AC_CHECK_LIB(resolv, inet_aton) ) # On Tru64, chflags seems to be present, but calling it will # exit Python AC_CACHE_CHECK([for chflags], [ac_cv_have_chflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char*argv[]) { if(chflags(argv[0], 0) != 0) return 1; return 0; } ]])], [ac_cv_have_chflags=yes], [ac_cv_have_chflags=no], [ac_cv_have_chflags=cross]) ]) if test "$ac_cv_have_chflags" = cross ; then AC_CHECK_FUNC([chflags], [ac_cv_have_chflags="yes"], [ac_cv_have_chflags="no"]) fi if test "$ac_cv_have_chflags" = yes ; then AC_DEFINE(HAVE_CHFLAGS, 1, [Define to 1 if you have the 'chflags' function.]) fi AC_CACHE_CHECK([for lchflags], [ac_cv_have_lchflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char*argv[]) { if(lchflags(argv[0], 0) != 0) return 1; return 0; } ]])],[ac_cv_have_lchflags=yes],[ac_cv_have_lchflags=no],[ac_cv_have_lchflags=cross]) ]) if test "$ac_cv_have_lchflags" = cross ; then AC_CHECK_FUNC([lchflags], [ac_cv_have_lchflags="yes"], [ac_cv_have_lchflags="no"]) fi if test "$ac_cv_have_lchflags" = yes ; then AC_DEFINE(HAVE_LCHFLAGS, 1, [Define to 1 if you have the 'lchflags' function.]) fi dnl Check if system zlib has *Copy() functions dnl dnl On MacOSX the linker will search for dylibs on the entire linker path dnl before searching for static libraries. setup.py adds -Wl,-search_paths_first dnl to revert to a more traditional unix behaviour and make it possible to dnl override the system libz with a local static library of libz. Temporarily dnl add that flag to our CFLAGS as well to ensure that we check the version dnl of libz that will be used by setup.py. dnl The -L/usr/local/lib is needed as wel to get the same compilation dnl environment as setup.py (and leaving it out can cause configure to use the dnl wrong version of the library) case $ac_sys_system/$ac_sys_release in Darwin/*) _CUR_CFLAGS="${CFLAGS}" _CUR_LDFLAGS="${LDFLAGS}" CFLAGS="${CFLAGS} -Wl,-search_paths_first" LDFLAGS="${LDFLAGS} -Wl,-search_paths_first -L/usr/local/lib" ;; esac AC_CHECK_LIB(z, inflateCopy, AC_DEFINE(HAVE_ZLIB_COPY, 1, [Define if the zlib library has inflateCopy])) case $ac_sys_system/$ac_sys_release in Darwin/*) CFLAGS="${_CUR_CFLAGS}" LDFLAGS="${_CUR_LDFLAGS}" ;; esac AC_MSG_CHECKING(for hstrerror) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[void* p = hstrerror; hstrerror(0)]])], [AC_DEFINE(HAVE_HSTRERROR, 1, Define if you have the 'hstrerror' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for inet_aton) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[void* p = inet_aton;inet_aton(0,0)]])], [AC_DEFINE(HAVE_INET_ATON, 1, Define if you have the 'inet_aton' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(for inet_pton) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[void* p = inet_pton]])], [AC_DEFINE(HAVE_INET_PTON, 1, Define if you have the 'inet_pton' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) # On some systems, setgroups is in unistd.h, on others, in grp.h AC_MSG_CHECKING(for setgroups) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #ifdef HAVE_GRP_H #include #endif ]], [[void* p = setgroups]])], [AC_DEFINE(HAVE_SETGROUPS, 1, Define if you have the 'setgroups' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) ]) # check for openpty and forkpty AC_CHECK_FUNCS(openpty,, AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lbsd"]) ) ) AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lbsd"]) ) ) # check for long file support functions AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs) AC_REPLACE_FUNCS(dup2 strdup) AC_CHECK_FUNCS(getpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[getpgrp(0);]])], [AC_DEFINE(GETPGRP_HAVE_ARG, 1, [Define if getpgrp() must be called as getpgrp(0).])], []) ) AC_CHECK_FUNCS(setpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[setpgrp(0,0);]])], [AC_DEFINE(SETPGRP_HAVE_ARG, 1, [Define if setpgrp() must be called as setpgrp(0, 0).])], []) ) # We search for both crypt and crypt_r as one or the other may be defined # This gets us our -lcrypt in LIBS when required on the target platform. AC_SEARCH_LIBS(crypt, crypt) AC_SEARCH_LIBS(crypt_r, crypt) AC_CHECK_FUNC(crypt_r, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #define _GNU_SOURCE /* Required for crypt_r()'s prototype in glibc. */ #include ]], [[ struct crypt_data d; char *r = crypt_r("", "", &d); ]])], [AC_DEFINE(HAVE_CRYPT_R, 1, [Define if you have the crypt_r() function.])], []) ) AC_CHECK_FUNCS(clock_gettime, [], [ AC_CHECK_LIB(rt, clock_gettime, [ LIBS="$LIBS -lrt" AC_DEFINE(HAVE_CLOCK_GETTIME, 1) AC_DEFINE(TIMEMODULE_LIB, [rt], [Library needed by timemodule.c: librt may be needed for clock_gettime()]) ]) ]) AC_CHECK_FUNCS(clock_getres, [], [ AC_CHECK_LIB(rt, clock_getres, [ AC_DEFINE(HAVE_CLOCK_GETRES, 1) ]) ]) AC_CHECK_FUNCS(clock_settime, [], [ AC_CHECK_LIB(rt, clock_settime, [ AC_DEFINE(HAVE_CLOCK_SETTIME, 1) ]) ]) AC_MSG_CHECKING(for major, minor, and makedev) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if defined(MAJOR_IN_MKDEV) #include #elif defined(MAJOR_IN_SYSMACROS) #include #else #include #endif ]], [[ makedev(major(0),minor(0)); ]])],[ AC_DEFINE(HAVE_DEVICE_MACROS, 1, [Define to 1 if you have the device macros.]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) ]) # On OSF/1 V5.1, getaddrinfo is available, but a define # for [no]getaddrinfo in netdb.h. AC_MSG_CHECKING(for getaddrinfo) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [have_getaddrinfo=yes], [have_getaddrinfo=no]) AC_MSG_RESULT($have_getaddrinfo) if test $have_getaddrinfo = yes then AC_MSG_CHECKING(getaddrinfo bug) AC_CACHE_VAL(ac_cv_buggy_getaddrinfo, AC_RUN_IFELSE([AC_LANG_SOURCE([[[ #include #include #include #include #include #include int main() { int passive, gaierr, inet4 = 0, inet6 = 0; struct addrinfo hints, *ai, *aitop; char straddr[INET6_ADDRSTRLEN], strport[16]; for (passive = 0; passive <= 1; passive++) { memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_flags = passive ? AI_PASSIVE : 0; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) { (void)gai_strerror(gaierr); goto bad; } for (ai = aitop; ai; ai = ai->ai_next) { if (ai->ai_addr == NULL || ai->ai_addrlen == 0 || getnameinfo(ai->ai_addr, ai->ai_addrlen, straddr, sizeof(straddr), strport, sizeof(strport), NI_NUMERICHOST|NI_NUMERICSERV) != 0) { goto bad; } switch (ai->ai_family) { case AF_INET: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "0.0.0.0") != 0) { goto bad; } } else { if (strcmp(straddr, "127.0.0.1") != 0) { goto bad; } } inet4++; break; case AF_INET6: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "::") != 0) { goto bad; } } else { if (strcmp(straddr, "::1") != 0) { goto bad; } } inet6++; break; case AF_UNSPEC: goto bad; break; default: /* another family support? */ break; } } freeaddrinfo(aitop); aitop = NULL; } if (!(inet4 == 0 || inet4 == 2)) goto bad; if (!(inet6 == 0 || inet6 == 2)) goto bad; if (aitop) freeaddrinfo(aitop); return 0; bad: if (aitop) freeaddrinfo(aitop); return 1; } ]]])], [ac_cv_buggy_getaddrinfo=no], [ac_cv_buggy_getaddrinfo=yes], [ if test "${enable_ipv6+set}" = set; then ac_cv_buggy_getaddrinfo="no -- configured with --(en|dis)able-ipv6" else ac_cv_buggy_getaddrinfo=yes fi])) fi AC_MSG_RESULT($ac_cv_buggy_getaddrinfo) if test $have_getaddrinfo = no || test "$ac_cv_buggy_getaddrinfo" = yes then if test $ipv6 = yes then echo 'Fatal: You must get working getaddrinfo() function.' echo ' or you can specify "--disable-ipv6"'. exit 1 fi else AC_DEFINE(HAVE_GETADDRINFO, 1, [Define if you have the getaddrinfo function.]) fi AC_CHECK_FUNCS(getnameinfo) # checks for structures AC_HEADER_TIME AC_STRUCT_TM AC_STRUCT_TIMEZONE AC_CHECK_MEMBERS([struct stat.st_rdev]) AC_CHECK_MEMBERS([struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_flags]) AC_CHECK_MEMBERS([struct stat.st_gen]) AC_CHECK_MEMBERS([struct stat.st_birthtime]) AC_CHECK_MEMBERS([struct stat.st_blocks]) AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_passwd], [], [], [[ #include #include ]]) # Issue #21085: In Cygwin, siginfo_t does not have si_band field. AC_CHECK_MEMBERS([siginfo_t.si_band], [], [], [[#include ]]) AC_MSG_CHECKING(for time.h that defines altzone) AC_CACHE_VAL(ac_cv_header_time_altzone,[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[return altzone;]])], [ac_cv_header_time_altzone=yes], [ac_cv_header_time_altzone=no]) ]) AC_MSG_RESULT($ac_cv_header_time_altzone) if test $ac_cv_header_time_altzone = yes; then AC_DEFINE(HAVE_ALTZONE, 1, [Define this if your time.h defines altzone.]) fi was_it_defined=no AC_MSG_CHECKING(whether sys/select.h and sys/time.h may both be included) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include #include ]], [[;]])],[ AC_DEFINE(SYS_SELECT_WITH_SYS_TIME, 1, [Define if you can safely include both and (which you can't on SCO ODT 3.0).]) was_it_defined=yes ],[]) AC_MSG_RESULT($was_it_defined) AC_MSG_CHECKING(for addrinfo) AC_CACHE_VAL(ac_cv_struct_addrinfo, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[struct addrinfo a]])], [ac_cv_struct_addrinfo=yes], [ac_cv_struct_addrinfo=no])) AC_MSG_RESULT($ac_cv_struct_addrinfo) if test $ac_cv_struct_addrinfo = yes; then AC_DEFINE(HAVE_ADDRINFO, 1, [struct addrinfo (netdb.h)]) fi AC_MSG_CHECKING(for sockaddr_storage) AC_CACHE_VAL(ac_cv_struct_sockaddr_storage, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include ]], [[struct sockaddr_storage s]])], [ac_cv_struct_sockaddr_storage=yes], [ac_cv_struct_sockaddr_storage=no])) AC_MSG_RESULT($ac_cv_struct_sockaddr_storage) if test $ac_cv_struct_sockaddr_storage = yes; then AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1, [struct sockaddr_storage (sys/socket.h)]) fi AC_MSG_CHECKING(for sockaddr_alg) AC_CACHE_VAL(ac_cv_struct_sockaddr_alg, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include # include ]], [[struct sockaddr_alg s]])], [ac_cv_struct_sockaddr_alg=yes], [ac_cv_struct_sockaddr_alg=no])) AC_MSG_RESULT($ac_cv_struct_sockaddr_alg) if test $ac_cv_struct_sockaddr_alg = yes; then AC_DEFINE(HAVE_SOCKADDR_ALG, 1, [struct sockaddr_alg (linux/if_alg.h)]) fi # checks for compiler characteristics AC_C_CHAR_UNSIGNED AC_C_CONST works=no AC_MSG_CHECKING(for working signed char) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[signed char c;]])], [works=yes], [AC_DEFINE(signed, , [Define to empty if the keyword does not work.])] ) AC_MSG_RESULT($works) have_prototypes=no AC_MSG_CHECKING(for prototypes) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[int foo(int x) { return 0; }]], [[return foo(10);]])], [AC_DEFINE(HAVE_PROTOTYPES, 1, [Define if your compiler supports function prototype]) have_prototypes=yes], [] ) AC_MSG_RESULT($have_prototypes) works=no AC_MSG_CHECKING(for variable length prototypes and stdarg.h) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include int foo(int x, ...) { va_list va; va_start(va, x); va_arg(va, int); va_arg(va, char *); va_arg(va, double); return 0; } ]], [[return foo(10, "", 3.14);]])],[ AC_DEFINE(HAVE_STDARG_PROTOTYPES, 1, [Define if your compiler supports variable length function prototypes (e.g. void fprintf(FILE *, char *, ...);) *and* ]) works=yes ],[]) AC_MSG_RESULT($works) # check for socketpair AC_MSG_CHECKING(for socketpair) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[void *x=socketpair]])], [AC_DEFINE(HAVE_SOCKETPAIR, 1, [Define if you have the 'socketpair' function.]) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) # check if sockaddr has sa_len member AC_MSG_CHECKING(if sockaddr has sa_len member) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr x; x.sa_len = 0;]])], [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Define if sockaddr has sa_len member])], [AC_MSG_RESULT(no)] ) # sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-( AH_TEMPLATE(HAVE_GETHOSTBYNAME_R, [Define this if you have some version of gethostbyname_r()]) AC_CHECK_FUNC(gethostbyname_r, [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_MSG_CHECKING([gethostbyname_r with 6 args]) OLD_CFLAGS=$CFLAGS CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he, *res; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop) ]])],[ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1, [Define this if you have the 6-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 5 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop) ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1, [Define this if you have the 5-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 3 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; struct hostent_data data; (void) gethostbyname_r(name, he, &data); ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1, [Define this if you have the 3-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) ]) ]) CFLAGS=$OLD_CFLAGS ], [ AC_CHECK_FUNCS(gethostbyname) ]) AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R) AC_SUBST(HAVE_GETHOSTBYNAME) # checks for system services # (none yet) # Linux requires this for correct f.p. operations AC_CHECK_FUNC(__fpu_control, [], [AC_CHECK_LIB(ieee, __fpu_control) ]) # check for --with-libm=... AC_SUBST(LIBM) case $ac_sys_system in Darwin) ;; *) LIBM=-lm esac AC_MSG_CHECKING(for --with-libm=STRING) AC_ARG_WITH(libm, AS_HELP_STRING([--with-libm=STRING], [override libm math library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBM= AC_MSG_RESULT(force LIBM empty) elif test "$withval" != yes then LIBM=$withval AC_MSG_RESULT(set LIBM="$withval") else AC_MSG_ERROR([proper usage is --with-libm=STRING]) fi], [AC_MSG_RESULT(default LIBM="$LIBM")]) # check for --with-libc=... AC_SUBST(LIBC) AC_MSG_CHECKING(for --with-libc=STRING) AC_ARG_WITH(libc, AS_HELP_STRING([--with-libc=STRING], [override libc C library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBC= AC_MSG_RESULT(force LIBC empty) elif test "$withval" != yes then LIBC=$withval AC_MSG_RESULT(set LIBC="$withval") else AC_MSG_ERROR([proper usage is --with-libc=STRING]) fi], [AC_MSG_RESULT(default LIBC="$LIBC")]) # ************************************** # * Check for gcc x64 inline assembler * # ************************************** AC_MSG_CHECKING(for x64 gcc inline assembler) AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ __asm__ __volatile__ ("movq %rcx, %rax"); ]])],[have_gcc_asm_for_x64=yes],[have_gcc_asm_for_x64=no]) AC_MSG_RESULT($have_gcc_asm_for_x64) if test "$have_gcc_asm_for_x64" = yes then AC_DEFINE(HAVE_GCC_ASM_FOR_X64, 1, [Define if we can use x64 gcc inline assembler]) fi # ************************************************** # * Check for various properties of floating point * # ************************************************** AX_C_FLOAT_WORDS_BIGENDIAN if test "$ax_cv_c_float_words_bigendian" = "yes" then AC_DEFINE(DOUBLE_IS_BIG_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the most significant byte first]) elif test "$ax_cv_c_float_words_bigendian" = "no" then AC_DEFINE(DOUBLE_IS_LITTLE_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the least significant byte first]) else # Some ARM platforms use a mixed-endian representation for doubles. # While Python doesn't currently have full support for these platforms # (see e.g., issue 1762561), we can at least make sure that float <-> string # conversions work. # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big # or little, then it must be this? AC_DEFINE(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored in ARM mixed-endian order (byte order 45670123)]) fi # The short float repr introduced in Python 3.1 requires the # correctly-rounded string <-> double conversion functions from # Python/dtoa.c, which in turn require that the FPU uses 53-bit # rounding; this is a problem on x86, where the x87 FPU has a default # rounding precision of 64 bits. For gcc/x86, we can fix this by # using inline assembler to get and set the x87 FPU control word. # This inline assembler syntax may also work for suncc and icc, # so we try it on all platforms. AC_MSG_CHECKING(whether we can use gcc inline assembler to get and set x87 control word) AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned short cw; __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); ]])],[have_gcc_asm_for_x87=yes],[have_gcc_asm_for_x87=no]) AC_MSG_RESULT($have_gcc_asm_for_x87) if test "$have_gcc_asm_for_x87" = yes then AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1, [Define if we can use gcc inline assembler to get and set x87 control word]) fi AC_MSG_CHECKING(whether we can use gcc inline assembler to get and set mc68881 fpcr) AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned int fpcr; __asm__ __volatile__ ("fmove.l %%fpcr,%0" : "=g" (fpcr)); __asm__ __volatile__ ("fmove.l %0,%%fpcr" : : "g" (fpcr)); ]])],[have_gcc_asm_for_mc68881=yes],[have_gcc_asm_for_mc68881=no]) AC_MSG_RESULT($have_gcc_asm_for_mc68881) if test "$have_gcc_asm_for_mc68881" = yes then AC_DEFINE(HAVE_GCC_ASM_FOR_MC68881, 1, [Define if we can use gcc inline assembler to get and set mc68881 fpcr]) fi # Detect whether system arithmetic is subject to x87-style double # rounding issues. The result of this test has little meaning on non # IEEE 754 platforms. On IEEE 754, test should return 1 if rounding # mode is round-to-nearest and double rounding issues are present, and # 0 otherwise. See http://bugs.python.org/issue2937 for more info. AC_MSG_CHECKING(for x87-style double rounding) # $BASECFLAGS may affect the result ac_save_cc="$CC" CC="$CC $BASECFLAGS" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { volatile double x, y, z; /* 1./(1-2**-53) -> 1+2**-52 (correct), 1.0 (double rounding) */ x = 0.99999999999999989; /* 1-2**-53 */ y = 1./x; if (y != 1.) exit(0); /* 1e16+2.99999 -> 1e16+2. (correct), 1e16+4. (double rounding) */ x = 1e16; y = 2.99999; z = x + y; if (z != 1e16+4.) exit(0); /* both tests show evidence of double rounding */ exit(1); } ]])], [ac_cv_x87_double_rounding=no], [ac_cv_x87_double_rounding=yes], [ac_cv_x87_double_rounding=no]) CC="$ac_save_cc" AC_MSG_RESULT($ac_cv_x87_double_rounding) if test "$ac_cv_x87_double_rounding" = yes then AC_DEFINE(X87_DOUBLE_ROUNDING, 1, [Define if arithmetic is subject to x87-style double rounding issue]) fi # ************************************ # * Check for mathematical functions * # ************************************ LIBS_SAVE=$LIBS LIBS="$LIBS $LIBM" AC_CHECK_FUNCS([acosh asinh atanh copysign erf erfc expm1 finite gamma]) AC_CHECK_FUNCS([hypot lgamma log1p log2 round tgamma]) AC_CHECK_DECLS([isinf, isnan, isfinite], [], [], [[#include ]]) # For multiprocessing module, check that sem_open # actually works. For FreeBSD versions <= 7.2, # the kernel module that provides POSIX semaphores # isn't loaded by default, so an attempt to call # sem_open results in a 'Signal 12' error. AC_MSG_CHECKING(whether POSIX semaphores are enabled) AC_CACHE_VAL(ac_cv_posix_semaphores_enabled, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include int main(void) { sem_t *a = sem_open("/autoconf", O_CREAT, S_IRUSR|S_IWUSR, 0); if (a == SEM_FAILED) { perror("sem_open"); return 1; } sem_close(a); sem_unlink("/autoconf"); return 0; } ]])], [ac_cv_posix_semaphores_enabled=yes], [ac_cv_posix_semaphores_enabled=no], [ac_cv_posix_semaphores_enabled=yes]) ) AC_MSG_RESULT($ac_cv_posix_semaphores_enabled) if test $ac_cv_posix_semaphores_enabled = no then AC_DEFINE(POSIX_SEMAPHORES_NOT_ENABLED, 1, [Define if POSIX semaphores aren't enabled on your system]) fi # Multiprocessing check for broken sem_getvalue AC_MSG_CHECKING(for broken sem_getvalue) AC_CACHE_VAL(ac_cv_broken_sem_getvalue, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include int main(void){ sem_t *a = sem_open("/autocftw", O_CREAT, S_IRUSR|S_IWUSR, 0); int count; int res; if(a==SEM_FAILED){ perror("sem_open"); return 1; } res = sem_getvalue(a, &count); sem_close(a); sem_unlink("/autocftw"); return res==-1 ? 1 : 0; } ]])], [ac_cv_broken_sem_getvalue=no], [ac_cv_broken_sem_getvalue=yes], [ac_cv_broken_sem_getvalue=yes]) ) AC_MSG_RESULT($ac_cv_broken_sem_getvalue) if test $ac_cv_broken_sem_getvalue = yes then AC_DEFINE(HAVE_BROKEN_SEM_GETVALUE, 1, [define to 1 if your sem_getvalue is broken.]) fi AC_CHECK_DECLS([RTLD_LAZY, RTLD_NOW, RTLD_GLOBAL, RTLD_LOCAL, RTLD_NODELETE, RTLD_NOLOAD, RTLD_DEEPBIND, RTLD_MEMBER], [], [], [[#include ]]) # determine what size digit to use for Python's longs AC_MSG_CHECKING([digit size for Python's longs]) AC_ARG_ENABLE(big-digits, AS_HELP_STRING([--enable-big-digits@<:@=15|30@:>@],[use big digits (30 or 15 bits) for Python longs (default is system-dependent)]]), [case $enable_big_digits in yes) enable_big_digits=30 ;; no) enable_big_digits=15 ;; [15|30]) ;; *) AC_MSG_ERROR([bad value $enable_big_digits for --enable-big-digits; value should be 15 or 30]) ;; esac AC_MSG_RESULT($enable_big_digits) AC_DEFINE_UNQUOTED(PYLONG_BITS_IN_DIGIT, $enable_big_digits, [Define as the preferred size in bits of long digits]) ], [AC_MSG_RESULT(no value specified)]) # check for wchar.h AC_CHECK_HEADER(wchar.h, [ AC_DEFINE(HAVE_WCHAR_H, 1, [Define if the compiler provides a wchar.h header file.]) wchar_h="yes" ], wchar_h="no" ) # determine wchar_t size if test "$wchar_h" = yes then AC_CHECK_SIZEOF(wchar_t, 4, [#include ]) fi AC_MSG_CHECKING(for UCS-4 tcl) have_ucs4_tcl=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #if TCL_UTF_MAX != 6 # error "NOT UCS4_TCL" #endif]], [[]])],[ AC_DEFINE(HAVE_UCS4_TCL, 1, [Define this if you have tcl and TCL_UTF_MAX==6]) have_ucs4_tcl=yes ],[]) AC_MSG_RESULT($have_ucs4_tcl) # check whether wchar_t is signed or not if test "$wchar_h" = yes then # check whether wchar_t is signed or not AC_MSG_CHECKING(whether wchar_t is signed) AC_CACHE_VAL(ac_cv_wchar_t_signed, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include int main() { /* Success: exit code 0 */ return ((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1); } ]])], [ac_cv_wchar_t_signed=yes], [ac_cv_wchar_t_signed=no], [ac_cv_wchar_t_signed=yes])]) AC_MSG_RESULT($ac_cv_wchar_t_signed) fi AC_MSG_CHECKING(whether wchar_t is usable) # wchar_t is only usable if it maps to an unsigned type if test "$ac_cv_sizeof_wchar_t" -ge 2 \ -a "$ac_cv_wchar_t_signed" = "no" then AC_DEFINE(HAVE_USABLE_WCHAR_T, 1, [Define if you have a useable wchar_t type defined in wchar.h; useable means wchar_t must be an unsigned type with at least 16 bits. (see Include/unicodeobject.h).]) AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi case $ac_sys_system/$ac_sys_release in SunOS/*) if test -f /etc/os-release; then OS_NAME=$(awk -F= '/^NAME=/ {print substr($2,2,length($2)-2)}' /etc/os-release) if test "x$OS_NAME" = "xOracle Solaris"; then # bpo-43667: In Oracle Solaris, the internal form of wchar_t in # non-Unicode locales is not Unicode and hence cannot be used directly. # https://docs.oracle.com/cd/E37838_01/html/E61053/gmwke.html AC_DEFINE(HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION, 1, [Define if the internal form of wchar_t in non-Unicode locales is not Unicode.]) fi fi ;; esac # check for endianness AC_C_BIGENDIAN # ABI version string for Python extension modules. This appears between the # periods in shared library file names, e.g. foo..so. It is calculated # from the following attributes which affect the ABI of this Python build (in # this order): # # * The Python implementation (always 'cpython-' for us) # * The major and minor version numbers # * --with-pydebug (adds a 'd') # # Thus for example, Python 3.2 built with wide unicode, pydebug, and pymalloc, # would get a shared library ABI version tag of 'cpython-32dmu' and shared # libraries would be named 'foo.cpython-32dmu.so'. # # In Python 3.2 and older, --with-wide-unicode added a 'u' flag. # In Python 3.7 and older, --with-pymalloc added a 'm' flag. AC_SUBST(SOABI) AC_MSG_CHECKING(ABIFLAGS) AC_MSG_RESULT($ABIFLAGS) AC_MSG_CHECKING(SOABI) SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_MSG_RESULT($SOABI) # Release and debug (Py_DEBUG) ABI are compatible, but not Py_TRACE_REFS ABI if test "$Py_DEBUG" = 'true' -a "$with_trace_refs" != "yes"; then # Similar to SOABI but remove "d" flag from ABIFLAGS AC_SUBST(ALT_SOABI) ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_DEFINE_UNQUOTED(ALT_SOABI, "${ALT_SOABI}", [Alternative SOABI used in debug build to load C extensions built in release mode]) fi AC_SUBST(EXT_SUFFIX) EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX} AC_MSG_CHECKING(LDVERSION) LDVERSION='$(VERSION)$(ABIFLAGS)' AC_MSG_RESULT($LDVERSION) # On Android and Cygwin the shared libraries must be linked with libpython. AC_SUBST(LIBPYTHON) if test -n "$ANDROID_API_LEVEL" -o "$MACHDEP" = "cygwin"; then LIBPYTHON="-lpython${VERSION}${ABIFLAGS}" else LIBPYTHON='' fi AC_SUBST(BINLIBDEST) BINLIBDEST='$(LIBDIR)/python$(VERSION)' # Check for --with-platlibdir # /usr/$LIDIRNAME/python$VERSION AC_SUBST(PLATLIBDIR) PLATLIBDIR="lib" AC_MSG_CHECKING(for --with-platlibdir) AC_ARG_WITH(platlibdir, AS_HELP_STRING([--with-platlibdir=DIRNAME], [Python library directory name (default is "lib")]), [ # ignore 3 options: # --with-platlibdir # --with-platlibdir= # --without-platlibdir if test -n "$withval" -a "$withval" != yes -a "$withval" != no then AC_MSG_RESULT(yes) PLATLIBDIR="$withval" BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)' else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) dnl define LIBPL after ABIFLAGS and LDVERSION is defined. AC_SUBST(PY_ENABLE_SHARED) if test x$PLATFORM_TRIPLET = x; then LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}" else LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}" fi AC_SUBST(LIBPL) # Check whether right shifting a negative integer extends the sign bit # or fills with zeros (like the Cray J90, according to Tim Peters). AC_MSG_CHECKING(whether right shift extends the sign bit) AC_CACHE_VAL(ac_cv_rshift_extends_sign, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main() { return (((-1)>>3 == -1) ? 0 : 1); } ]])], [ac_cv_rshift_extends_sign=yes], [ac_cv_rshift_extends_sign=no], [ac_cv_rshift_extends_sign=yes])]) AC_MSG_RESULT($ac_cv_rshift_extends_sign) if test "$ac_cv_rshift_extends_sign" = no then AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS, 1, [Define if i>>j for signed int i does not extend the sign bit when i < 0]) fi # check for getc_unlocked and related locking functions AC_MSG_CHECKING(for getc_unlocked() and friends) AC_CACHE_VAL(ac_cv_have_getc_unlocked, [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ FILE *f = fopen("/dev/null", "r"); flockfile(f); getc_unlocked(f); funlockfile(f); ]])],[ac_cv_have_getc_unlocked=yes],[ac_cv_have_getc_unlocked=no])]) AC_MSG_RESULT($ac_cv_have_getc_unlocked) if test "$ac_cv_have_getc_unlocked" = yes then AC_DEFINE(HAVE_GETC_UNLOCKED, 1, [Define this if you have flockfile(), getc_unlocked(), and funlockfile()]) fi # check where readline lives # save the value of LIBS so we don't actually link Python with readline LIBS_no_readline=$LIBS # On some systems we need to link readline to a termcap compatible # library. NOTE: Keep the precedence of listed libraries synchronised # with setup.py. py_cv_lib_readline=no AC_MSG_CHECKING([how to link readline libs]) for py_libtermcap in "" tinfo ncursesw ncurses curses termcap; do if test -z "$py_libtermcap"; then READLINE_LIBS="-lreadline" else READLINE_LIBS="-lreadline -l$py_libtermcap" fi LIBS="$READLINE_LIBS $LIBS_no_readline" AC_LINK_IFELSE( [AC_LANG_CALL([],[readline])], [py_cv_lib_readline=yes]) if test $py_cv_lib_readline = yes; then break fi done # Uncomment this line if you want to use READINE_LIBS in Makefile or scripts #AC_SUBST([READLINE_LIBS]) if test $py_cv_lib_readline = no; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$READLINE_LIBS]) AC_DEFINE(HAVE_LIBREADLINE, 1, [Define if you have the readline library (-lreadline).]) fi # check for readline 2.2 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include ]])], [have_readline=yes], [have_readline=no] ) if test $have_readline = yes then AC_EGREP_HEADER([extern int rl_completion_append_character;], [readline/readline.h], AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER, 1, [Define if you have readline 2.2]), ) AC_EGREP_HEADER([extern int rl_completion_suppress_append;], [readline/readline.h], AC_DEFINE(HAVE_RL_COMPLETION_SUPPRESS_APPEND, 1, [Define if you have rl_completion_suppress_append]), ) fi # check for readline 4.0 AC_CHECK_LIB(readline, rl_pre_input_hook, AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1, [Define if you have readline 4.0]), ,$READLINE_LIBS) # also in 4.0 AC_CHECK_LIB(readline, rl_completion_display_matches_hook, AC_DEFINE(HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK, 1, [Define if you have readline 4.0]), ,$READLINE_LIBS) # also in 4.0, but not in editline AC_CHECK_LIB(readline, rl_resize_terminal, AC_DEFINE(HAVE_RL_RESIZE_TERMINAL, 1, [Define if you have readline 4.0]), ,$READLINE_LIBS) # check for readline 4.2 AC_CHECK_LIB(readline, rl_completion_matches, AC_DEFINE(HAVE_RL_COMPLETION_MATCHES, 1, [Define if you have readline 4.2]), ,$READLINE_LIBS) # also in readline 4.2 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include ]])], [have_readline=yes], [have_readline=no] ) if test $have_readline = yes then AC_EGREP_HEADER([extern int rl_catch_signals;], [readline/readline.h], AC_DEFINE(HAVE_RL_CATCH_SIGNAL, 1, [Define if you can turn off readline's signal handling.]), ) fi AC_CHECK_LIB(readline, append_history, AC_DEFINE(HAVE_RL_APPEND_HISTORY, 1, [Define if readline supports append_history]), ,$READLINE_LIBS) # End of readline checks: restore LIBS LIBS=$LIBS_no_readline AC_MSG_CHECKING(for broken nice()) AC_CACHE_VAL(ac_cv_broken_nice, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { int val1 = nice(1); if (val1 != -1 && val1 == nice(2)) exit(0); exit(1); } ]])], [ac_cv_broken_nice=yes], [ac_cv_broken_nice=no], [ac_cv_broken_nice=no])]) AC_MSG_RESULT($ac_cv_broken_nice) if test "$ac_cv_broken_nice" = yes then AC_DEFINE(HAVE_BROKEN_NICE, 1, [Define if nice() returns success/failure instead of the new priority.]) fi AC_MSG_CHECKING(for broken poll()) AC_CACHE_VAL(ac_cv_broken_poll, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 }; int poll_test; close (42); poll_test = poll(&poll_struct, 1, 0); if (poll_test < 0) return 0; else if (poll_test == 0 && poll_struct.revents != POLLNVAL) return 0; else return 1; } ]])], [ac_cv_broken_poll=yes], [ac_cv_broken_poll=no], [ac_cv_broken_poll=no])) AC_MSG_RESULT($ac_cv_broken_poll) if test "$ac_cv_broken_poll" = yes then AC_DEFINE(HAVE_BROKEN_POLL, 1, [Define if poll() sets errno on invalid file descriptors.]) fi # check tzset(3) exists and works like we expect it to AC_MSG_CHECKING(for working tzset()) AC_CACHE_VAL(ac_cv_working_tzset, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #if HAVE_TZNAME extern char *tzname[]; #endif int main() { /* Note that we need to ensure that not only does tzset(3) do 'something' with localtime, but it works as documented in the library reference and as expected by the test suite. This includes making sure that tzname is set properly if tm->tm_zone does not exist since it is the alternative way of getting timezone info. Red Hat 6.2 doesn't understand the southern hemisphere after New Year's Day. */ time_t groundhogday = 1044144000; /* GMT-based */ time_t midyear = groundhogday + (365 * 24 * 3600 / 2); putenv("TZ=UTC+0"); tzset(); if (localtime(&groundhogday)->tm_hour != 0) exit(1); #if HAVE_TZNAME /* For UTC, tzname[1] is sometimes "", sometimes " " */ if (strcmp(tzname[0], "UTC") || (tzname[1][0] != 0 && tzname[1][0] != ' ')) exit(1); #endif putenv("TZ=EST+5EDT,M4.1.0,M10.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 19) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "EST") || strcmp(tzname[1], "EDT")) exit(1); #endif putenv("TZ=AEST-10AEDT-11,M10.5.0,M3.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 11) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "AEST") || strcmp(tzname[1], "AEDT")) exit(1); #endif #if HAVE_STRUCT_TM_TM_ZONE if (strcmp(localtime(&groundhogday)->tm_zone, "AEDT")) exit(1); if (strcmp(localtime(&midyear)->tm_zone, "AEST")) exit(1); #endif exit(0); } ]])], [ac_cv_working_tzset=yes], [ac_cv_working_tzset=no], [ac_cv_working_tzset=no])]) AC_MSG_RESULT($ac_cv_working_tzset) if test "$ac_cv_working_tzset" = yes then AC_DEFINE(HAVE_WORKING_TZSET, 1, [Define if tzset() actually switches the local timezone in a meaningful way.]) fi # Look for subsecond timestamps in struct stat AC_MSG_CHECKING(for tv_nsec in struct stat) AC_CACHE_VAL(ac_cv_stat_tv_nsec, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtim.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec=yes], [ac_cv_stat_tv_nsec=no])) AC_MSG_RESULT($ac_cv_stat_tv_nsec) if test "$ac_cv_stat_tv_nsec" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC, 1, [Define if you have struct stat.st_mtim.tv_nsec]) fi # Look for BSD style subsecond timestamps in struct stat AC_MSG_CHECKING(for tv_nsec2 in struct stat) AC_CACHE_VAL(ac_cv_stat_tv_nsec2, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtimespec.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec2=yes], [ac_cv_stat_tv_nsec2=no])) AC_MSG_RESULT($ac_cv_stat_tv_nsec2) if test "$ac_cv_stat_tv_nsec2" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC2, 1, [Define if you have struct stat.st_mtimensec]) fi # first curses header check ac_save_cppflags="$CPPFLAGS" if test "$cross_compiling" = no; then CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw" fi AC_CHECK_HEADERS(curses.h ncurses.h) # On Solaris, term.h requires curses.h AC_CHECK_HEADERS(term.h,,,[ #ifdef HAVE_CURSES_H #include #endif ]) # On HP/UX 11.0, mvwdelch is a block with a return statement AC_MSG_CHECKING(whether mvwdelch is an expression) AC_CACHE_VAL(ac_cv_mvwdelch_is_expression, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ int rtn; rtn = mvwdelch(0,0,0); ]])], [ac_cv_mvwdelch_is_expression=yes], [ac_cv_mvwdelch_is_expression=no])) AC_MSG_RESULT($ac_cv_mvwdelch_is_expression) if test "$ac_cv_mvwdelch_is_expression" = yes then AC_DEFINE(MVWDELCH_IS_EXPRESSION, 1, [Define if mvwdelch in curses.h is an expression.]) fi # Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque # structs since version 5.7. If the macro is defined as zero before including # [n]curses.h, ncurses will expose fields of the structs regardless of the # configuration. AC_MSG_CHECKING(whether WINDOW has _flags) AC_CACHE_VAL(ac_cv_window_has_flags, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #define NCURSES_OPAQUE 0 #include ]], [[ WINDOW *w; w->_flags = 0; ]])], [ac_cv_window_has_flags=yes], [ac_cv_window_has_flags=no])) AC_MSG_RESULT($ac_cv_window_has_flags) if test "$ac_cv_window_has_flags" = yes then AC_DEFINE(WINDOW_HAS_FLAGS, 1, [Define if WINDOW in curses.h offers a field _flags.]) fi AC_MSG_CHECKING(for is_pad) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef is_pad void *x=is_pad #endif ]])], [AC_DEFINE(HAVE_CURSES_IS_PAD, 1, Define if you have the 'is_pad' function or macro.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for is_term_resized) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=is_term_resized]])], [AC_DEFINE(HAVE_CURSES_IS_TERM_RESIZED, 1, Define if you have the 'is_term_resized' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for resize_term) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=resize_term]])], [AC_DEFINE(HAVE_CURSES_RESIZE_TERM, 1, Define if you have the 'resize_term' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for resizeterm) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[void *x=resizeterm]])], [AC_DEFINE(HAVE_CURSES_RESIZETERM, 1, Define if you have the 'resizeterm' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for immedok) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef immedok void *x=immedok #endif ]])], [AC_DEFINE(HAVE_CURSES_IMMEDOK, 1, Define if you have the 'immedok' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for syncok) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef syncok void *x=syncok #endif ]])], [AC_DEFINE(HAVE_CURSES_SYNCOK, 1, Define if you have the 'syncok' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for wchgat) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef wchgat void *x=wchgat #endif ]])], [AC_DEFINE(HAVE_CURSES_WCHGAT, 1, Define if you have the 'wchgat' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for filter) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef filter void *x=filter #endif ]])], [AC_DEFINE(HAVE_CURSES_FILTER, 1, Define if you have the 'filter' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for has_key) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef has_key void *x=has_key #endif ]])], [AC_DEFINE(HAVE_CURSES_HAS_KEY, 1, Define if you have the 'has_key' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for typeahead) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef typeahead void *x=typeahead #endif ]])], [AC_DEFINE(HAVE_CURSES_TYPEAHEAD, 1, Define if you have the 'typeahead' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING(for use_env) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ #ifndef use_env void *x=use_env #endif ]])], [AC_DEFINE(HAVE_CURSES_USE_ENV, 1, Define if you have the 'use_env' function.) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)] ) # last curses configure check CPPFLAGS=$ac_save_cppflags AC_MSG_NOTICE([checking for device files]) dnl NOTE: Inform user how to proceed with files when cross compiling. if test "x$cross_compiling" = xyes; then if test "${ac_cv_file__dev_ptmx+set}" != set; then AC_MSG_CHECKING([for /dev/ptmx]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptmx to yes/no in your CONFIG_SITE file when cross compiling]) fi if test "${ac_cv_file__dev_ptc+set}" != set; then AC_MSG_CHECKING([for /dev/ptc]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptc to yes/no in your CONFIG_SITE file when cross compiling]) fi fi AC_CHECK_FILE(/dev/ptmx, [], []) if test "x$ac_cv_file__dev_ptmx" = xyes; then AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if you have the /dev/ptmx device file.]) fi AC_CHECK_FILE(/dev/ptc, [], []) if test "x$ac_cv_file__dev_ptc" = xyes; then AC_DEFINE(HAVE_DEV_PTC, 1, [Define to 1 if you have the /dev/ptc device file.]) fi if test $ac_sys_system = Darwin then LIBS="$LIBS -framework CoreFoundation" fi AC_CACHE_CHECK([for %zd printf() format support], ac_cv_have_size_t_format, [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SSIZE_T typedef ssize_t Py_ssize_t; #elif SIZEOF_VOID_P == SIZEOF_LONG typedef long Py_ssize_t; #else typedef int Py_ssize_t; #endif int main() { char buffer[256]; if(sprintf(buffer, "%zd", (size_t)123) < 0) return 1; if (strcmp(buffer, "123")) return 1; if (sprintf(buffer, "%zd", (Py_ssize_t)-123) < 0) return 1; if (strcmp(buffer, "-123")) return 1; return 0; } ]])], [ac_cv_have_size_t_format=yes], [ac_cv_have_size_t_format=no], [ac_cv_have_size_t_format="cross -- assuming yes" ])]) if test "$ac_cv_have_size_t_format" != no ; then AC_DEFINE(PY_FORMAT_SIZE_T, "z", [Define to printf format modifier for Py_ssize_t]) fi AC_CHECK_TYPE(socklen_t,, AC_DEFINE(socklen_t,int, [Define to `int' if does not define.]),[ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) AC_MSG_CHECKING(for broken mbstowcs) AC_CACHE_VAL(ac_cv_broken_mbstowcs, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { size_t len = -1; const char *str = "text"; len = mbstowcs(NULL, str, 0); return (len != 4); } ]])], [ac_cv_broken_mbstowcs=no], [ac_cv_broken_mbstowcs=yes], [ac_cv_broken_mbstowcs=no])) AC_MSG_RESULT($ac_cv_broken_mbstowcs) if test "$ac_cv_broken_mbstowcs" = yes then AC_DEFINE(HAVE_BROKEN_MBSTOWCS, 1, [Define if mbstowcs(NULL, "text", 0) does not return the number of wide chars that would be converted.]) fi # Check for --with-computed-gotos AC_MSG_CHECKING(for --with-computed-gotos) AC_ARG_WITH(computed-gotos, AS_HELP_STRING([--with-computed-gotos], [enable computed gotos in evaluation loop (enabled by default on supported compilers)]), [ if test "$withval" = yes then AC_DEFINE(USE_COMPUTED_GOTOS, 1, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(yes) fi if test "$withval" = no then AC_DEFINE(USE_COMPUTED_GOTOS, 0, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(no) fi ], [AC_MSG_RESULT(no value specified)]) AC_MSG_CHECKING(whether $CC supports computed gotos) AC_CACHE_VAL(ac_cv_computed_gotos, AC_RUN_IFELSE([AC_LANG_SOURCE([[[ int main(int argc, char **argv) { static void *targets[1] = { &&LABEL1 }; goto LABEL2; LABEL1: return 0; LABEL2: goto *targets[0]; return 1; } ]]])], [ac_cv_computed_gotos=yes], [ac_cv_computed_gotos=no], [if test "${with_computed_gotos+set}" = set; then ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos" else ac_cv_computed_gotos=no fi])) AC_MSG_RESULT($ac_cv_computed_gotos) case "$ac_cv_computed_gotos" in yes*) AC_DEFINE(HAVE_COMPUTED_GOTOS, 1, [Define if the C compiler supports computed gotos.]) esac case $ac_sys_system in AIX*) AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;; esac AC_SUBST(THREADHEADERS) for h in `(cd $srcdir;echo Python/thread_*.h)` do THREADHEADERS="$THREADHEADERS \$(srcdir)/$h" done AC_SUBST(SRCDIRS) SRCDIRS="Parser Parser/pegen Objects Python Modules Modules/_io Programs" AC_MSG_CHECKING(for build directories) for dir in $SRCDIRS; do if test ! -d $dir; then mkdir $dir fi done AC_MSG_RESULT(done) # Availability of -O2: AC_MSG_CHECKING(for -O2) saved_cflags="$CFLAGS" CFLAGS="-O2" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[ ]])],[have_O2=yes],[have_O2=no]) AC_MSG_RESULT($have_O2) CFLAGS="$saved_cflags" # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect: # http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html AC_MSG_CHECKING(for glibc _FORTIFY_SOURCE/memmove bug) saved_cflags="$CFLAGS" CFLAGS="-O2 -D_FORTIFY_SOURCE=2" if test "$have_O2" = no; then CFLAGS="" fi AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include void foo(void *p, void *q) { memmove(p, q, 19); } int main() { char a[32] = "123456789000000000"; foo(&a[9], a); if (strcmp(a, "123456789123456789000000000") != 0) return 1; foo(a, &a[9]); if (strcmp(a, "123456789000000000") != 0) return 1; return 0; } ]])], [have_glibc_memmove_bug=no], [have_glibc_memmove_bug=yes], [have_glibc_memmove_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_glibc_memmove_bug) if test "$have_glibc_memmove_bug" = yes; then AC_DEFINE(HAVE_GLIBC_MEMMOVE_BUG, 1, [Define if glibc has incorrect _FORTIFY_SOURCE wrappers for memmove and bcopy.]) fi if test "$have_gcc_asm_for_x87" = yes; then # Some versions of gcc miscompile inline asm: # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html case $CC in *gcc*) AC_MSG_CHECKING(for gcc ipa-pure-const bug) saved_cflags="$CFLAGS" CFLAGS="-O2" AC_RUN_IFELSE([AC_LANG_SOURCE([[ __attribute__((noinline)) int foo(int *p) { int r; asm ( "movl \$6, (%1)\n\t" "xorl %0, %0\n\t" : "=r" (r) : "r" (p) : "memory" ); return r; } int main() { int p = 8; if ((foo(&p) ? : p) != 6) return 1; return 0; } ]])], [have_ipa_pure_const_bug=no], [have_ipa_pure_const_bug=yes], [have_ipa_pure_const_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_ipa_pure_const_bug) if test "$have_ipa_pure_const_bug" = yes; then AC_DEFINE(HAVE_IPA_PURE_CONST_BUG, 1, [Define if gcc has the ipa-pure-const bug.]) fi ;; esac fi # Check for stdatomic.h AC_MSG_CHECKING(for stdatomic.h) AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include atomic_int int_var; atomic_uintptr_t uintptr_var; int main() { atomic_store_explicit(&int_var, 5, memory_order_relaxed); atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); return 0; } ]]) ],[have_stdatomic_h=yes],[have_stdatomic_h=no]) AC_MSG_RESULT($have_stdatomic_h) if test "$have_stdatomic_h" = yes; then AC_DEFINE(HAVE_STD_ATOMIC, 1, [Has stdatomic.h with atomic_int and atomic_uintptr_t]) fi # Check for GCC >= 4.7 __atomic builtins AC_MSG_CHECKING(for GCC >= 4.7 __atomic builtins) AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ volatile int val = 1; int main() { __atomic_load_n(&val, __ATOMIC_SEQ_CST); return 0; } ]]) ],[have_builtin_atomic=yes],[have_builtin_atomic=no]) AC_MSG_RESULT($have_builtin_atomic) if test "$have_builtin_atomic" = yes; then AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Has builtin atomics]) fi # ensurepip option AC_MSG_CHECKING(for ensurepip) AC_ARG_WITH(ensurepip, [AS_HELP_STRING([--with-ensurepip@<:@=install|upgrade|no@:>@], ["install" or "upgrade" using bundled pip (default is upgrade)])], [], [with_ensurepip=upgrade]) AS_CASE($with_ensurepip, [yes|upgrade],[ENSUREPIP=upgrade], [install],[ENSUREPIP=install], [no],[ENSUREPIP=no], [AC_MSG_ERROR([--with-ensurepip=upgrade|install|no])]) AC_MSG_RESULT($ENSUREPIP) AC_SUBST(ENSUREPIP) # check if the dirent structure of a d_type field and DT_UNKNOWN is defined AC_MSG_CHECKING(if the dirent structure of a d_type field) AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include int main() { struct dirent entry; return entry.d_type == DT_UNKNOWN; } ]]) ],[have_dirent_d_type=yes],[have_dirent_d_type=no]) AC_MSG_RESULT($have_dirent_d_type) if test "$have_dirent_d_type" = yes; then AC_DEFINE(HAVE_DIRENT_D_TYPE, 1, [Define to 1 if the dirent structure has a d_type field]) fi # check if the Linux getrandom() syscall is available AC_MSG_CHECKING(for the Linux getrandom() syscall) AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include #include #include int main() { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = GRND_NONBLOCK; /* ignore the result, Python checks for ENOSYS and EAGAIN at runtime */ (void)syscall(SYS_getrandom, buffer, buflen, flags); return 0; } ]]) ],[have_getrandom_syscall=yes],[have_getrandom_syscall=no]) AC_MSG_RESULT($have_getrandom_syscall) if test "$have_getrandom_syscall" = yes; then AC_DEFINE(HAVE_GETRANDOM_SYSCALL, 1, [Define to 1 if the Linux getrandom() syscall is available]) fi # check if the getrandom() function is available # the test was written for the Solaris function of AC_MSG_CHECKING(for the getrandom() function) AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include int main() { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0; /* ignore the result, Python checks for ENOSYS at runtime */ (void)getrandom(buffer, buflen, flags); return 0; } ]]) ],[have_getrandom=yes],[have_getrandom=no]) AC_MSG_RESULT($have_getrandom) if test "$have_getrandom" = yes; then AC_DEFINE(HAVE_GETRANDOM, 1, [Define to 1 if the getrandom() function is available]) fi # checks for POSIX shared memory, used by Modules/_multiprocessing/posixshmem.c # shm_* may only be available if linking against librt save_LIBS="$LIBS" save_includes_default="$ac_includes_default" AC_SEARCH_LIBS(shm_open, rt) if test "$ac_cv_search_shm_open" = "-lrt"; then AC_DEFINE(SHM_NEEDS_LIBRT, 1, [Define to 1 if you must link with -lrt for shm_open().]) fi AC_CHECK_HEADERS(sys/mman.h) # temporarily override ac_includes_default for AC_CHECK_FUNCS below ac_includes_default="\ ${ac_includes_default} #ifndef __cplusplus # ifdef HAVE_SYS_MMAN_H # include # endif #endif " AC_CHECK_FUNCS([shm_open shm_unlink]) # we don't want to link with librt always, restore LIBS LIBS="$save_LIBS" ac_includes_default="$save_includes_default" # Check for usable OpenSSL AX_CHECK_OPENSSL([have_openssl=yes],[have_openssl=no]) if test "$have_openssl" = yes; then AC_MSG_CHECKING([for X509_VERIFY_PARAM_set1_host in libssl]) save_LIBS="$LIBS" save_LDFLAGS="$LDFLAGS" save_CPPFLAGS="$CPPFLAGS" LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS" LIBS="$OPENSSL_LIBS $LIBS" CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS" AC_LINK_IFELSE([AC_LANG_PROGRAM([ [#include ] ], [ [X509_VERIFY_PARAM *p = X509_VERIFY_PARAM_new();] [X509_VERIFY_PARAM_set1_host(p, "localhost", 0);] [X509_VERIFY_PARAM_set1_ip_asc(p, "127.0.0.1");] [X509_VERIFY_PARAM_set_hostflags(p, 0);] ]) ], [ ac_cv_has_x509_verify_param_set1_host=yes ], [ ac_cv_has_x509_verify_param_set1_host=no ]) AC_MSG_RESULT($ac_cv_has_x509_verify_param_set1_host) if test "$ac_cv_has_x509_verify_param_set1_host" = "yes"; then AC_DEFINE(HAVE_X509_VERIFY_PARAM_SET1_HOST, 1, [Define if libssl has X509_VERIFY_PARAM_set1_host and related function]) fi CPPFLAGS="$save_CPPFLAGS" LDFLAGS="$save_LDFLAGS" LIBS="$save_LIBS" fi # ssl module default cipher suite string AH_TEMPLATE(PY_SSL_DEFAULT_CIPHERS, [Default cipher suites list for ssl module. 1: Python's preferred selection, 2: leave OpenSSL defaults untouched, 0: custom string]) AH_TEMPLATE(PY_SSL_DEFAULT_CIPHER_STRING, [Cipher suite string for PY_SSL_DEFAULT_CIPHERS=0] ) AC_MSG_CHECKING(for --with-ssl-default-suites) AC_ARG_WITH(ssl-default-suites, AS_HELP_STRING([--with-ssl-default-suites=@<:@python|openssl|STRING@:>@], [override default cipher suites string, python: use Python's preferred selection (default), openssl: leave OpenSSL's defaults untouched, STRING: use a custom string, PROTOCOL_SSLv2 ignores the setting, see Doc/library/ssl.rst]), [ AC_MSG_RESULT($withval) case "$withval" in python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ;; openssl) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 2) ;; *) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 0) AC_DEFINE_UNQUOTED(PY_SSL_DEFAULT_CIPHER_STRING, "$withval") ;; esac ], [ AC_MSG_RESULT(python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ]) # builtin hash modules default_hashlib_hashes="md5,sha1,sha256,sha512,sha3,blake2" AC_DEFINE([PY_BUILTIN_HASHLIB_HASHES], [], [enabled builtin hash modules] ) AC_MSG_CHECKING(for --with-builtin-hashlib-hashes) AC_ARG_WITH(builtin-hashlib-hashes, AS_HELP_STRING([--with-builtin-hashlib-hashes=md5,sha1,sha256,sha512,sha3,blake2], [builtin hash modules, md5, sha1, sha256, sha512, sha3 (with shake), blake2]), [ case "$withval" in yes) withval=$default_hashlib_hashes ;; no) withval="" ;; esac AC_MSG_RESULT($withval) AC_DEFINE_UNQUOTED(PY_BUILTIN_HASHLIB_HASHES, "$withval") ], [ AC_MSG_RESULT($default_hashlib_hashes); AC_DEFINE_UNQUOTED(PY_BUILTIN_HASHLIB_HASHES, "$default_hashlib_hashes") ]) # generate output files AC_CONFIG_FILES(Makefile.pre Misc/python.pc Misc/python-embed.pc Misc/python-config.sh) AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix]) AC_OUTPUT echo "creating Modules/Setup.local" >&AS_MESSAGE_FD if test ! -f Modules/Setup.local then echo "# Edit this file for local setup changes" >Modules/Setup.local fi echo "creating Makefile" >&AS_MESSAGE_FD $SHELL $srcdir/Modules/makesetup -c $srcdir/Modules/config.c.in \ -s Modules \ Modules/Setup.local $srcdir/Modules/Setup mv config.c Modules if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then echo "" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD echo "If you want a release build with all stable optimizations active (PGO, etc)," >&AS_MESSAGE_FD echo "please run ./configure --enable-optimizations" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD fi