1# Process this file with autoconf to produce a configure script, like so: 2# aclocal && autoconf && autoheader && automake 3 4AC_INIT([GNU Fortran Runtime Library], 0.3,,[libgfortran]) 5AC_CONFIG_HEADER(config.h) 6GCC_TOPLEV_SUBDIRS 7 8# ------- 9# Options 10# ------- 11 12AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 13AC_ARG_ENABLE(version-specific-runtime-libs, 14AS_HELP_STRING([--enable-version-specific-runtime-libs], 15 [specify that runtime libraries should be installed in a compiler-specific directory]), 16[case "$enableval" in 17 yes) version_specific_libs=yes ;; 18 no) version_specific_libs=no ;; 19 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 20 esac], 21[version_specific_libs=no]) 22AC_MSG_RESULT($version_specific_libs) 23 24# Build with intermodule optimisations 25AC_MSG_CHECKING([for --enable-intermodule]) 26AC_ARG_ENABLE(intermodule, 27AS_HELP_STRING([--enable-intermodule],[build the library in one step]), 28[case "$enable_intermodule" in 29 yes) onestep="-onestep";; 30 *) onestep="";; 31esac], 32[onestep=""]) 33AC_MSG_RESULT($enable_intermodule) 34AM_CONDITIONAL(onestep,[test x$onestep = x-onestep]) 35AC_SUBST(onestep) 36 37# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 38# 39# You will slowly go insane if you do not grok the following fact: when 40# building this library, the top-level /target/ becomes the library's /host/. 41# 42# configure then causes --target to default to --host, exactly like any 43# other package using autoconf. Therefore, 'target' and 'host' will 44# always be the same. This makes sense both for native and cross compilers 45# just think about it for a little while. :-) 46# 47# Also, if this library is being configured as part of a cross compiler, the 48# top-level configure script will pass the "real" host as $with_cross_host. 49# 50# Do not delete or change the following two lines. For why, see 51# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 52AC_CANONICAL_SYSTEM 53ACX_NONCANONICAL_TARGET 54 55target_alias=${target_alias-$host_alias} 56AC_SUBST(target_alias) 57 58# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 59# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 60# 1.9.6: minimum required version 61# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 62# of other PACKAGE_* variables will, however, and there's nothing 63# we can do about that; they come from AC_INIT). 64# foreign: we don't follow the normal rules for GNU packages (no COPYING 65# file in the top srcdir, etc, etc), so stop complaining. 66# no-dist: we don't want 'dist' and related rules. 67# -Wall: turns on all automake warnings... 68# -Wno-portability: ...except this one, since GNU make is required. 69AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability]) 70 71AM_MAINTAINER_MODE 72AM_ENABLE_MULTILIB(, ..) 73 74# Handy for debugging: 75#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 76 77# Are we being configured with some form of cross compiler? 78# NB: We don't actually need to know this just now, but when, say, a test 79# suite is included, we'll have to know. 80if test "$build" != "$host"; then 81 LIBGFOR_IS_NATIVE=false 82 GCC_NO_EXECUTABLES 83else 84 LIBGFOR_IS_NATIVE=true 85fi 86 87AC_USE_SYSTEM_EXTENSIONS 88 89GCC_WITH_TOOLEXECLIBDIR 90 91# Calculate toolexeclibdir 92# Also toolexecdir, though it's only used in toolexeclibdir 93case ${version_specific_libs} in 94 yes) 95 # Need the gcc compiler version to know where to install libraries 96 # and header files if --enable-version-specific-runtime-libs option 97 # is selected. 98 toolexecdir='$(libdir)/gcc/$(target_alias)' 99 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' 100 ;; 101 no) 102 if test -n "$with_cross_host" && 103 test x"$with_cross_host" != x"no"; then 104 # Install a library built with a cross compiler in tooldir, not libdir. 105 toolexecdir='$(exec_prefix)/$(target_alias)' 106 case ${with_toolexeclibdir} in 107 no) 108 toolexeclibdir='$(toolexecdir)/lib' 109 ;; 110 *) 111 toolexeclibdir=${with_toolexeclibdir} 112 ;; 113 esac 114 else 115 toolexecdir='$(libdir)/gcc-lib/$(target_alias)' 116 toolexeclibdir='$(libdir)' 117 fi 118 multi_os_directory=`$CC -print-multi-os-directory` 119 case $multi_os_directory in 120 .) ;; # Avoid trailing /. 121 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; 122 esac 123 ;; 124esac 125AC_SUBST(toolexecdir) 126AC_SUBST(toolexeclibdir) 127 128# Create a spec file, so that compile/link tests don't fail 129test -f libgfortran.spec || touch libgfortran.spec 130 131AC_LANG_C 132# Check the compiler. 133# The same as in boehm-gc and libstdc++. Have to borrow it from there. 134# We must force CC to /not/ be precious variables; otherwise 135# the wrong, non-multilib-adjusted value will be used in multilibs. 136# As a side effect, we have to subst CFLAGS ourselves. 137 138m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) 139m4_define([_AC_ARG_VAR_PRECIOUS],[]) 140AC_PROG_CC 141m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 142 143AC_SUBST(CFLAGS) 144 145AM_PROG_CC_C_O 146 147# Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC. 148if test "x$GCC" = "xyes"; then 149 AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring" 150 ## We like to use C11 and C99 routines when available. This makes 151 ## sure that 152 ## __STDC_VERSION__ is set such that libc includes make them available. 153 AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla" 154 ## Compile the following tests with the same system header contents 155 ## that we'll encounter when compiling our own source files. 156 CFLAGS="-std=gnu11 $CFLAGS" 157fi 158 159# Add CET specific flags if CET is enabled 160GCC_CET_FLAGS(CET_FLAGS) 161AM_FCFLAGS="$AM_FCFLAGS $CET_FLAGS" 162AM_CFLAGS="$AM_CFLAGS $CET_FLAGS" 163CFLAGS="$CFLAGS $CET_FLAGS" 164 165AC_SUBST(AM_FCFLAGS) 166AC_SUBST(AM_CFLAGS) 167AC_SUBST(CFLAGS) 168 169# Check for symbol versioning (copied from libssp). 170AC_MSG_CHECKING([whether symbol versioning is supported]) 171AC_ARG_ENABLE(symvers, 172AS_HELP_STRING([--disable-symvers], 173 [disable symbol versioning for libgfortran]), 174gfortran_use_symver=$enableval, 175gfortran_use_symver=yes) 176if test "x$gfortran_use_symver" != xno; then 177 save_LDFLAGS="$LDFLAGS" 178 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" 179 cat > conftest.map <<EOF 180FOO_1.0 { 181 global: *foo*; bar; local: *; 182}; 183EOF 184 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no]) 185 if test x$gfortran_use_symver = xno; then 186 case "$target_os" in 187 solaris2*) 188 LDFLAGS="$save_LDFLAGS" 189 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" 190 # Sun ld cannot handle wildcards and treats all entries as undefined. 191 cat > conftest.map <<EOF 192FOO_1.0 { 193 global: foo; local: *; 194}; 195EOF 196 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no]) 197 ;; 198 esac 199 fi 200 LDFLAGS="$save_LDFLAGS" 201fi 202AC_MSG_RESULT($gfortran_use_symver) 203AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno]) 204AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu]) 205AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun]) 206 207# For GPU offloading, not everything in libfortran can be supported. 208# Currently, the only target that has this problem is nvptx. The 209# following is a (partial) list of features that are unsupportable on 210# this particular target: 211# * Constructors 212# * alloca 213# * C library support for I/O, with printf as the one notable exception 214# * C library support for other features such as signal, environment 215# variables, time functions 216 217AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx]) 218 219# Figure out whether the compiler supports "-ffunction-sections -fdata-sections", 220# similarly to how libstdc++ does it 221ac_test_CFLAGS="${CFLAGS+set}" 222ac_save_CFLAGS="$CFLAGS" 223 224# Check for -ffunction-sections -fdata-sections 225AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections]) 226CFLAGS='-Werror -ffunction-sections -fdata-sections' 227AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no]) 228if test "$ac_test_CFLAGS" = set; then 229 CFLAGS="$ac_save_CFLAGS" 230else 231 # this is the suspicious part 232 CFLAGS="" 233fi 234if test x"$ac_fdsections" = x"yes"; then 235 SECTION_FLAGS='-ffunction-sections -fdata-sections' 236fi 237AC_MSG_RESULT($ac_fdsections) 238AC_SUBST(SECTION_FLAGS) 239 240# Check linker hardware capability support. 241GCC_CHECK_LINKER_HWCAP 242 243# Find other programs we need. 244AC_CHECK_TOOL(AS, as) 245AC_CHECK_TOOL(AR, ar) 246AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 247AC_PROG_MAKE_SET 248AC_PROG_INSTALL 249 250# Configure libtool 251#AC_MSG_NOTICE([====== Starting libtool configuration]) 252AC_LIBTOOL_DLOPEN 253AM_PROG_LIBTOOL 254ACX_LT_HOST_FLAGS 255AC_SUBST(enable_shared) 256AC_SUBST(enable_static) 257#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10 258 259# We need gfortran to compile parts of the library 260#AC_PROG_FC(gfortran) 261FC="$GFORTRAN" 262AC_PROG_FC(gfortran) 263 264# extra LD Flags which are required for targets 265case "${host}" in 266 *-darwin*) 267 # Darwin needs -single_module when linking libgfortran 268 extra_ldflags_libgfortran=-Wl,-single_module 269 ;; 270esac 271AC_SUBST(extra_ldflags_libgfortran) 272 273# We need a working compiler at that point, otherwise give a clear 274# error message and bail out. 275LIBGFOR_WORKING_GFORTRAN 276 277AC_SYS_LARGEFILE 278 279# Types 280AC_TYPE_OFF_T 281AC_TYPE_INTPTR_T 282AC_TYPE_UINTPTR_T 283AC_CHECK_TYPES([ptrdiff_t]) 284 285# check header files (we assume C89 is available, so don't check for that) 286AC_CHECK_HEADERS_ONCE(unistd.h sys/random.h sys/time.h sys/times.h \ 287sys/resource.h sys/types.h sys/stat.h sys/uio.h sys/wait.h \ 288floatingpoint.h ieeefp.h fenv.h fptrap.h \ 289fpxcp.h pwd.h complex.h xlocale.h) 290 291GCC_HEADER_STDINT(gstdint.h) 292 293AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev]) 294 295case "${host}--x${with_newlib}" in 296 mips*--xyes) 297 hardwire_newlib=1;; 298 nvptx*--xyes) 299 hardwire_newlib=1;; 300esac 301 302# Check for library functions. 303if test "${hardwire_newlib:-0}" -eq 1; then 304 # We are being configured with a cross compiler. AC_REPLACE_FUNCS 305 # may not work correctly, because the compiler may not be able to 306 # link executables. 307 AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.]) 308 AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.]) 309 AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.]) 310 AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.]) 311 AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.]) 312 AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.]) 313 AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.]) 314 AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.]) 315 316 # At some point, we should differentiate between architectures 317 # like x86, which have long double versions, and alpha/powerpc/etc., 318 # which don't. For the time being, punt. 319 if test x"long_double_math_on_this_cpu" = x"yes"; then 320 AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.]) 321 fi 322else 323 AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \ 324 ftruncate chsize chdir getentropy getlogin gethostname kill link symlink \ 325 sleep ttyname sigaction waitpid \ 326 alarm access fork posix_spawn setmode fcntl writev \ 327 gettimeofday stat fstat lstat getpwuid vsnprintf dup \ 328 getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \ 329 getgid getpid getuid geteuid umask getegid \ 330 secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \ 331 freelocale uselocale strerror_l) 332fi 333 334# Check strerror_r, cannot be above as versions with two and three arguments exist 335LIBGFOR_CHECK_STRERROR_R 336 337# Check for C99 (and other IEEE) math functions 338GCC_CHECK_MATH_FUNC([acosf]) 339GCC_CHECK_MATH_FUNC([acos]) 340GCC_CHECK_MATH_FUNC([acosl]) 341GCC_CHECK_MATH_FUNC([acoshf]) 342GCC_CHECK_MATH_FUNC([acosh]) 343GCC_CHECK_MATH_FUNC([acoshl]) 344GCC_CHECK_MATH_FUNC([asinf]) 345GCC_CHECK_MATH_FUNC([asin]) 346GCC_CHECK_MATH_FUNC([asinl]) 347GCC_CHECK_MATH_FUNC([asinhf]) 348GCC_CHECK_MATH_FUNC([asinh]) 349GCC_CHECK_MATH_FUNC([asinhl]) 350GCC_CHECK_MATH_FUNC([atan2f]) 351GCC_CHECK_MATH_FUNC([atan2]) 352GCC_CHECK_MATH_FUNC([atan2l]) 353GCC_CHECK_MATH_FUNC([atanf]) 354GCC_CHECK_MATH_FUNC([atan]) 355GCC_CHECK_MATH_FUNC([atanl]) 356GCC_CHECK_MATH_FUNC([atanhf]) 357GCC_CHECK_MATH_FUNC([atanh]) 358GCC_CHECK_MATH_FUNC([atanhl]) 359GCC_CHECK_MATH_FUNC([cargf]) 360GCC_CHECK_MATH_FUNC([carg]) 361GCC_CHECK_MATH_FUNC([cargl]) 362GCC_CHECK_MATH_FUNC([ceilf]) 363GCC_CHECK_MATH_FUNC([ceil]) 364GCC_CHECK_MATH_FUNC([ceill]) 365GCC_CHECK_MATH_FUNC([copysignf]) 366GCC_CHECK_MATH_FUNC([copysign]) 367GCC_CHECK_MATH_FUNC([copysignl]) 368GCC_CHECK_MATH_FUNC([cosf]) 369GCC_CHECK_MATH_FUNC([cos]) 370GCC_CHECK_MATH_FUNC([cosl]) 371GCC_CHECK_MATH_FUNC([ccosf]) 372GCC_CHECK_MATH_FUNC([ccos]) 373GCC_CHECK_MATH_FUNC([ccosl]) 374GCC_CHECK_MATH_FUNC([coshf]) 375GCC_CHECK_MATH_FUNC([cosh]) 376GCC_CHECK_MATH_FUNC([coshl]) 377GCC_CHECK_MATH_FUNC([ccoshf]) 378GCC_CHECK_MATH_FUNC([ccosh]) 379GCC_CHECK_MATH_FUNC([ccoshl]) 380GCC_CHECK_MATH_FUNC([expf]) 381GCC_CHECK_MATH_FUNC([exp]) 382GCC_CHECK_MATH_FUNC([expl]) 383GCC_CHECK_MATH_FUNC([cexpf]) 384GCC_CHECK_MATH_FUNC([cexp]) 385GCC_CHECK_MATH_FUNC([cexpl]) 386GCC_CHECK_MATH_FUNC([fabsf]) 387GCC_CHECK_MATH_FUNC([fabs]) 388GCC_CHECK_MATH_FUNC([fabsl]) 389GCC_CHECK_MATH_FUNC([cabsf]) 390GCC_CHECK_MATH_FUNC([cabs]) 391GCC_CHECK_MATH_FUNC([cabsl]) 392GCC_CHECK_MATH_FUNC([floorf]) 393GCC_CHECK_MATH_FUNC([floor]) 394GCC_CHECK_MATH_FUNC([floorl]) 395GCC_CHECK_MATH_FUNC([fmaf]) 396GCC_CHECK_MATH_FUNC([fma]) 397GCC_CHECK_MATH_FUNC([fmal]) 398GCC_CHECK_MATH_FUNC([fmodf]) 399GCC_CHECK_MATH_FUNC([fmod]) 400GCC_CHECK_MATH_FUNC([fmodl]) 401GCC_CHECK_MATH_FUNC([frexpf]) 402GCC_CHECK_MATH_FUNC([frexp]) 403GCC_CHECK_MATH_FUNC([frexpl]) 404GCC_CHECK_MATH_FUNC([hypotf]) 405GCC_CHECK_MATH_FUNC([hypot]) 406GCC_CHECK_MATH_FUNC([hypotl]) 407GCC_CHECK_MATH_FUNC([ldexpf]) 408GCC_CHECK_MATH_FUNC([ldexp]) 409GCC_CHECK_MATH_FUNC([ldexpl]) 410GCC_CHECK_MATH_FUNC([logf]) 411GCC_CHECK_MATH_FUNC([log]) 412GCC_CHECK_MATH_FUNC([logl]) 413GCC_CHECK_MATH_FUNC([clogf]) 414GCC_CHECK_MATH_FUNC([clog]) 415GCC_CHECK_MATH_FUNC([clogl]) 416GCC_CHECK_MATH_FUNC([log10f]) 417GCC_CHECK_MATH_FUNC([log10]) 418GCC_CHECK_MATH_FUNC([log10l]) 419GCC_CHECK_MATH_FUNC([clog10f]) 420GCC_CHECK_MATH_FUNC([clog10]) 421GCC_CHECK_MATH_FUNC([clog10l]) 422GCC_CHECK_MATH_FUNC([nextafterf]) 423GCC_CHECK_MATH_FUNC([nextafter]) 424GCC_CHECK_MATH_FUNC([nextafterl]) 425GCC_CHECK_MATH_FUNC([powf]) 426GCC_CHECK_MATH_FUNC([pow]) 427GCC_CHECK_MATH_FUNC([cpowf]) 428GCC_CHECK_MATH_FUNC([cpow]) 429GCC_CHECK_MATH_FUNC([cpowl]) 430GCC_CHECK_MATH_FUNC([roundf]) 431GCC_CHECK_MATH_FUNC([round]) 432GCC_CHECK_MATH_FUNC([roundl]) 433GCC_CHECK_MATH_FUNC([lroundf]) 434GCC_CHECK_MATH_FUNC([lround]) 435GCC_CHECK_MATH_FUNC([lroundl]) 436GCC_CHECK_MATH_FUNC([llroundf]) 437GCC_CHECK_MATH_FUNC([llround]) 438GCC_CHECK_MATH_FUNC([llroundl]) 439GCC_CHECK_MATH_FUNC([scalbnf]) 440GCC_CHECK_MATH_FUNC([scalbn]) 441GCC_CHECK_MATH_FUNC([scalbnl]) 442GCC_CHECK_MATH_FUNC([sinf]) 443GCC_CHECK_MATH_FUNC([sin]) 444GCC_CHECK_MATH_FUNC([sinl]) 445GCC_CHECK_MATH_FUNC([csinf]) 446GCC_CHECK_MATH_FUNC([csin]) 447GCC_CHECK_MATH_FUNC([csinl]) 448GCC_CHECK_MATH_FUNC([sinhf]) 449GCC_CHECK_MATH_FUNC([sinh]) 450GCC_CHECK_MATH_FUNC([sinhl]) 451GCC_CHECK_MATH_FUNC([csinhf]) 452GCC_CHECK_MATH_FUNC([csinh]) 453GCC_CHECK_MATH_FUNC([csinhl]) 454GCC_CHECK_MATH_FUNC([sqrtf]) 455GCC_CHECK_MATH_FUNC([sqrt]) 456GCC_CHECK_MATH_FUNC([sqrtl]) 457GCC_CHECK_MATH_FUNC([csqrtf]) 458GCC_CHECK_MATH_FUNC([csqrt]) 459GCC_CHECK_MATH_FUNC([csqrtl]) 460GCC_CHECK_MATH_FUNC([tanf]) 461GCC_CHECK_MATH_FUNC([tan]) 462GCC_CHECK_MATH_FUNC([tanl]) 463GCC_CHECK_MATH_FUNC([ctanf]) 464GCC_CHECK_MATH_FUNC([ctan]) 465GCC_CHECK_MATH_FUNC([ctanl]) 466GCC_CHECK_MATH_FUNC([tanhf]) 467GCC_CHECK_MATH_FUNC([tanh]) 468GCC_CHECK_MATH_FUNC([tanhl]) 469GCC_CHECK_MATH_FUNC([ctanhf]) 470GCC_CHECK_MATH_FUNC([ctanh]) 471GCC_CHECK_MATH_FUNC([ctanhl]) 472GCC_CHECK_MATH_FUNC([truncf]) 473GCC_CHECK_MATH_FUNC([trunc]) 474GCC_CHECK_MATH_FUNC([truncl]) 475GCC_CHECK_MATH_FUNC([erff]) 476GCC_CHECK_MATH_FUNC([erf]) 477GCC_CHECK_MATH_FUNC([erfcf]) 478GCC_CHECK_MATH_FUNC([erfc]) 479GCC_CHECK_MATH_FUNC([erfcl]) 480GCC_CHECK_MATH_FUNC([j0f]) 481GCC_CHECK_MATH_FUNC([j0]) 482GCC_CHECK_MATH_FUNC([j1f]) 483GCC_CHECK_MATH_FUNC([j1]) 484GCC_CHECK_MATH_FUNC([jnf]) 485GCC_CHECK_MATH_FUNC([jn]) 486GCC_CHECK_MATH_FUNC([jnl]) 487GCC_CHECK_MATH_FUNC([y0f]) 488GCC_CHECK_MATH_FUNC([y0]) 489GCC_CHECK_MATH_FUNC([y1f]) 490GCC_CHECK_MATH_FUNC([y1]) 491GCC_CHECK_MATH_FUNC([ynf]) 492GCC_CHECK_MATH_FUNC([yn]) 493GCC_CHECK_MATH_FUNC([ynl]) 494GCC_CHECK_MATH_FUNC([tgamma]) 495GCC_CHECK_MATH_FUNC([tgammaf]) 496GCC_CHECK_MATH_FUNC([lgamma]) 497GCC_CHECK_MATH_FUNC([lgammaf]) 498 499# Check for GFORTRAN_C99_1.1 funcs 500GCC_CHECK_MATH_FUNC([cacos]) 501GCC_CHECK_MATH_FUNC([cacosf]) 502GCC_CHECK_MATH_FUNC([cacosh]) 503GCC_CHECK_MATH_FUNC([cacoshf]) 504GCC_CHECK_MATH_FUNC([cacoshl]) 505GCC_CHECK_MATH_FUNC([cacosl]) 506GCC_CHECK_MATH_FUNC([casin]) 507GCC_CHECK_MATH_FUNC([casinf]) 508GCC_CHECK_MATH_FUNC([casinh]) 509GCC_CHECK_MATH_FUNC([casinhf]) 510GCC_CHECK_MATH_FUNC([casinhl]) 511GCC_CHECK_MATH_FUNC([casinl]) 512GCC_CHECK_MATH_FUNC([catan]) 513GCC_CHECK_MATH_FUNC([catanf]) 514GCC_CHECK_MATH_FUNC([catanh]) 515GCC_CHECK_MATH_FUNC([catanhf]) 516GCC_CHECK_MATH_FUNC([catanhl]) 517GCC_CHECK_MATH_FUNC([catanl]) 518 519# On AIX, clog is present in libm as __clog 520AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])]) 521 522GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysign], [double]) 523GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysignl], [long double]) 524GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabs], [double]) 525GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabsl], [long double]) 526 527# Check whether the system has a working stat() 528LIBGFOR_CHECK_WORKING_STAT 529 530# Check whether __mingw_snprintf() is present 531LIBGFOR_CHECK_MINGW_SNPRINTF 532 533# Check whether libquadmath should be used 534AC_ARG_ENABLE(libquadmath-support, 535AS_HELP_STRING([--disable-libquadmath-support], 536 [disable libquadmath support for Fortran]), 537ENABLE_LIBQUADMATH_SUPPORT=$enableval, 538ENABLE_LIBQUADMATH_SUPPORT=yes) 539enable_libquadmath_support= 540if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then 541 enable_libquadmath_support=no 542fi 543 544# Check whether we have a __float128 type, depends on enable_libquadmath_support 545LIBGFOR_CHECK_FLOAT128 546 547# Check for GNU libc feenableexcept 548AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])]) 549 550# At least for glibc, clock_gettime is in librt. But don't 551# pull that in if it still doesn't give us the function we want. This 552# test is copied from libgomp, and modified to not link in -lrt as 553# libgfortran calls clock_gettime via a weak reference if it's found 554# in librt. 555if test "$ac_cv_func_clock_gettime" = no; then 556 AC_CHECK_LIB(rt, clock_gettime, 557 [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1, 558 [Define to 1 if you have the `clock_gettime' function in librt.])]) 559fi 560 561# Check for SysV fpsetmask 562LIBGFOR_CHECK_FPSETMASK 563AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[ 564#ifdef HAVE_IEEEFP_H 565#include <ieeefp.h> 566#endif 567#include <math.h> 568]]) 569AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[ 570#ifdef HAVE_IEEEFP_H 571#include <ieeefp.h> 572#endif 573#include <math.h> 574]]) 575 576# Check whether we have fpsetsticky or fpresetsticky 577AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])]) 578AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])]) 579 580# Check for AIX fp_trap and fp_enable 581AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])]) 582AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])]) 583 584# Check if _SOFT_FLOAT is defined 585AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes]) 586 587# Runs configure.host to set up necessary host-dependent shell variables. 588# We then display a message about it, and propagate them through the 589# build chain. 590. ${srcdir}/configure.host 591AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h]) 592AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}]) 593FPU_HOST_HEADER=config/${fpu_host}.h 594AC_SUBST(FPU_HOST_HEADER) 595 596# Whether we will build the IEEE modules 597AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes]) 598AC_SUBST(IEEE_SUPPORT) 599 600# Some targets require additional compiler options for IEEE compatibility. 601IEEE_FLAGS="${ieee_flags}" 602AC_SUBST(IEEE_FLAGS) 603 604 605# Check for POSIX getpwuid_r 606# 607# There are two versions of getpwuid_r, the POSIX one with 5 608# arguments, and another one with 4 arguments used by at least HP-UX 609# 10.2. 610if test "$ac_cv_func_getpwuid_r" = "yes"; then 611 AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [ 612 AC_LINK_IFELSE([AC_LANG_PROGRAM([ 613#include <stdio.h> 614#include <sys/types.h> 615#include <pwd.h>], [ 616 getpwuid_r(0, NULL, NULL, 0, NULL); 617 ])], [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])]) 618fi 619if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then 620 AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.]) 621fi 622 623 624# Check out attribute support. 625LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY 626LIBGFOR_CHECK_ATTRIBUTE_ALIAS 627 628# Check out atomic builtins support. 629LIBGFOR_CHECK_ATOMIC_FETCH_ADD 630 631# Check out #pragma weak. 632LIBGFOR_GTHREAD_WEAK 633 634# Check out weakref support. 635LIBGFOR_CHECK_WEAKREF 636 637# Various other checks on target 638LIBGFOR_CHECK_UNLINK_OPEN_FILE 639 640# Check whether line terminator is LF or CRLF 641LIBGFOR_CHECK_CRLF 642 643# Check whether we support AVX extensions 644LIBGFOR_CHECK_AVX 645 646# Check wether we support AVX2 extensions 647LIBGFOR_CHECK_AVX2 648 649# Check wether we support AVX512f extensions 650LIBGFOR_CHECK_AVX512F 651 652# Check for FMA3 extensions 653LIBGFOR_CHECK_FMA3 654 655# Check for FMA4 extensions 656LIBGFOR_CHECK_FMA4 657 658# Check if AVX128 works 659LIBGFOR_CHECK_AVX128 660 661# Determine what GCC version number to use in filesystem paths. 662GCC_BASE_VER 663 664AC_CACHE_SAVE 665 666if test ${multilib} = yes; then 667 multilib_arg="--enable-multilib" 668else 669 multilib_arg= 670fi 671 672# Write our Makefile and spec file. 673AC_CONFIG_FILES([ 674Makefile 675libgfortran.spec 676]) 677AC_OUTPUT 678