1# Process this file with autoconf to produce a configure script, like so: 2# aclocal && autoconf && autoheader && automake 3 4AC_PREREQ(2.64) 5AC_INIT([GNU Fortran Runtime Library], 0.3,,[libgfortran]) 6AC_CONFIG_HEADER(config.h) 7GCC_TOPLEV_SUBDIRS 8 9# ------- 10# Options 11# ------- 12 13AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 14AC_ARG_ENABLE(version-specific-runtime-libs, 15AS_HELP_STRING([--enable-version-specific-runtime-libs], 16 [specify that runtime libraries should be installed in a compiler-specific directory]), 17[case "$enableval" in 18 yes) version_specific_libs=yes ;; 19 no) version_specific_libs=no ;; 20 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 21 esac], 22[version_specific_libs=no]) 23AC_MSG_RESULT($version_specific_libs) 24 25# Build with intermodule optimisations 26AC_MSG_CHECKING([for --enable-intermodule]) 27AC_ARG_ENABLE(intermodule, 28AS_HELP_STRING([--enable-intermodule],[build the library in one step]), 29[case "$enable_intermodule" in 30 yes) onestep="-onestep";; 31 *) onestep="";; 32esac], 33[onestep=""]) 34AC_MSG_RESULT($enable_intermodule) 35AM_CONDITIONAL(onestep,[test x$onestep = x-onestep]) 36AC_SUBST(onestep) 37 38# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 39# 40# You will slowly go insane if you do not grok the following fact: when 41# building this library, the top-level /target/ becomes the library's /host/. 42# 43# configure then causes --target to default to --host, exactly like any 44# other package using autoconf. Therefore, 'target' and 'host' will 45# always be the same. This makes sense both for native and cross compilers 46# just think about it for a little while. :-) 47# 48# Also, if this library is being configured as part of a cross compiler, the 49# top-level configure script will pass the "real" host as $with_cross_host. 50# 51# Do not delete or change the following two lines. For why, see 52# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 53AC_CANONICAL_SYSTEM 54ACX_NONCANONICAL_TARGET 55 56target_alias=${target_alias-$host_alias} 57AC_SUBST(target_alias) 58 59# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 60# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 61# 1.9.6: minimum required version 62# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 63# of other PACKAGE_* variables will, however, and there's nothing 64# we can do about that; they come from AC_INIT). 65# foreign: we don't follow the normal rules for GNU packages (no COPYING 66# file in the top srcdir, etc, etc), so stop complaining. 67# no-dist: we don't want 'dist' and related rules. 68# -Wall: turns on all automake warnings... 69# -Wno-portability: ...except this one, since GNU make is required. 70AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability]) 71 72AM_MAINTAINER_MODE 73AM_ENABLE_MULTILIB(, ..) 74 75# Handy for debugging: 76#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 77 78# Are we being configured with some form of cross compiler? 79# NB: We don't actually need to know this just now, but when, say, a test 80# suite is included, we'll have to know. 81if test "$build" != "$host"; then 82 LIBGFOR_IS_NATIVE=false 83 GCC_NO_EXECUTABLES 84else 85 LIBGFOR_IS_NATIVE=true 86fi 87 88AC_USE_SYSTEM_EXTENSIONS 89 90# Calculate toolexeclibdir 91# Also toolexecdir, though it's only used in toolexeclibdir 92case ${version_specific_libs} in 93 yes) 94 # Need the gcc compiler version to know where to install libraries 95 # and header files if --enable-version-specific-runtime-libs option 96 # is selected. 97 toolexecdir='$(libdir)/gcc/$(target_alias)' 98 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' 99 ;; 100 no) 101 if test -n "$with_cross_host" && 102 test x"$with_cross_host" != x"no"; then 103 # Install a library built with a cross compiler in tooldir, not libdir. 104 toolexecdir='$(exec_prefix)/$(target_alias)' 105 toolexeclibdir='$(toolexecdir)/lib' 106 else 107 toolexecdir='$(libdir)/gcc-lib/$(target_alias)' 108 toolexeclibdir='$(libdir)' 109 fi 110 multi_os_directory=`$CC -print-multi-os-directory` 111 case $multi_os_directory in 112 .) ;; # Avoid trailing /. 113 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; 114 esac 115 ;; 116esac 117AC_SUBST(toolexecdir) 118AC_SUBST(toolexeclibdir) 119 120# Create a spec file, so that compile/link tests don't fail 121test -f libgfortran.spec || touch libgfortran.spec 122 123AC_LANG_C 124# Check the compiler. 125# The same as in boehm-gc and libstdc++. Have to borrow it from there. 126# We must force CC to /not/ be precious variables; otherwise 127# the wrong, non-multilib-adjusted value will be used in multilibs. 128# As a side effect, we have to subst CFLAGS ourselves. 129 130m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) 131m4_define([_AC_ARG_VAR_PRECIOUS],[]) 132AC_PROG_CC 133m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 134 135AC_SUBST(CFLAGS) 136 137AM_PROG_CC_C_O 138 139# Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC. 140if test "x$GCC" = "xyes"; then 141 AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring" 142 ## We like to use C11 and C99 routines when available. This makes 143 ## sure that 144 ## __STDC_VERSION__ is set such that libc includes make them available. 145 AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla" 146 ## Compile the following tests with the same system header contents 147 ## that we'll encounter when compiling our own source files. 148 CFLAGS="-std=gnu11 $CFLAGS" 149fi 150 151# Add CET specific flags if CET is enabled 152GCC_CET_FLAGS(CET_FLAGS) 153AM_FCFLAGS="$AM_FCFLAGS $CET_FLAGS" 154AM_CFLAGS="$AM_CFLAGS $CET_FLAGS" 155CFLAGS="$CFLAGS $CET_FLAGS" 156 157AC_SUBST(AM_FCFLAGS) 158AC_SUBST(AM_CFLAGS) 159AC_SUBST(CFLAGS) 160 161# Check for symbol versioning (copied from libssp). 162AC_MSG_CHECKING([whether symbol versioning is supported]) 163AC_ARG_ENABLE(symvers, 164AS_HELP_STRING([--disable-symvers], 165 [disable symbol versioning for libgfortran]), 166gfortran_use_symver=$enableval, 167gfortran_use_symver=yes) 168if test "x$gfortran_use_symver" != xno; then 169 save_LDFLAGS="$LDFLAGS" 170 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" 171 cat > conftest.map <<EOF 172FOO_1.0 { 173 global: *foo*; bar; local: *; 174}; 175EOF 176 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no]) 177 if test x$gfortran_use_symver = xno; then 178 case "$target_os" in 179 solaris2*) 180 LDFLAGS="$save_LDFLAGS" 181 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" 182 # Sun ld cannot handle wildcards and treats all entries as undefined. 183 cat > conftest.map <<EOF 184FOO_1.0 { 185 global: foo; local: *; 186}; 187EOF 188 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no]) 189 ;; 190 esac 191 fi 192 LDFLAGS="$save_LDFLAGS" 193fi 194AC_MSG_RESULT($gfortran_use_symver) 195AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno]) 196AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu]) 197AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun]) 198 199# For GPU offloading, not everything in libfortran can be supported. 200# Currently, the only target that has this problem is nvptx. The 201# following is a (partial) list of features that are unsupportable on 202# this particular target: 203# * Constructors 204# * alloca 205# * C library support for I/O, with printf as the one notable exception 206# * C library support for other features such as signal, environment 207# variables, time functions 208 209AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx]) 210 211# Figure out whether the compiler supports "-ffunction-sections -fdata-sections", 212# similarly to how libstdc++ does it 213ac_test_CFLAGS="${CFLAGS+set}" 214ac_save_CFLAGS="$CFLAGS" 215 216# Check for -ffunction-sections -fdata-sections 217AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections]) 218CFLAGS='-Werror -ffunction-sections -fdata-sections' 219AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no]) 220if test "$ac_test_CFLAGS" = set; then 221 CFLAGS="$ac_save_CFLAGS" 222else 223 # this is the suspicious part 224 CFLAGS="" 225fi 226if test x"$ac_fdsections" = x"yes"; then 227 SECTION_FLAGS='-ffunction-sections -fdata-sections' 228fi 229AC_MSG_RESULT($ac_fdsections) 230AC_SUBST(SECTION_FLAGS) 231 232# Check linker hardware capability support. 233GCC_CHECK_LINKER_HWCAP 234 235# Find other programs we need. 236AC_CHECK_TOOL(AS, as) 237AC_CHECK_TOOL(AR, ar) 238AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 239AC_PROG_MAKE_SET 240AC_PROG_INSTALL 241 242# Configure libtool 243#AC_MSG_NOTICE([====== Starting libtool configuration]) 244AC_LIBTOOL_DLOPEN 245AM_PROG_LIBTOOL 246ACX_LT_HOST_FLAGS 247AC_SUBST(enable_shared) 248AC_SUBST(enable_static) 249#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10 250 251# We need gfortran to compile parts of the library 252#AC_PROG_FC(gfortran) 253FC="$GFORTRAN" 254AC_PROG_FC(gfortran) 255 256# extra LD Flags which are required for targets 257case "${host}" in 258 *-darwin*) 259 # Darwin needs -single_module when linking libgfortran 260 extra_ldflags_libgfortran=-Wl,-single_module 261 ;; 262esac 263AC_SUBST(extra_ldflags_libgfortran) 264 265# We need a working compiler at that point, otherwise give a clear 266# error message and bail out. 267LIBGFOR_WORKING_GFORTRAN 268 269AC_SYS_LARGEFILE 270 271# Types 272AC_TYPE_OFF_T 273AC_TYPE_INTPTR_T 274AC_TYPE_UINTPTR_T 275AC_CHECK_TYPES([ptrdiff_t]) 276 277# check header files (we assume C89 is available, so don't check for that) 278AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \ 279sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \ 280fpxcp.h pwd.h complex.h xlocale.h) 281 282GCC_HEADER_STDINT(gstdint.h) 283 284AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev]) 285 286case "${host}--x${with_newlib}" in 287 mips*--xyes) 288 hardwire_newlib=1;; 289 nvptx*--xyes) 290 hardwire_newlib=1;; 291esac 292 293# Check for library functions. 294if test "${hardwire_newlib:-0}" -eq 1; then 295 # We are being configured with a cross compiler. AC_REPLACE_FUNCS 296 # may not work correctly, because the compiler may not be able to 297 # link executables. 298 AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.]) 299 AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.]) 300 AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.]) 301 AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.]) 302 AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.]) 303 AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.]) 304 AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.]) 305 AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.]) 306 307 # At some point, we should differentiate between architectures 308 # like x86, which have long double versions, and alpha/powerpc/etc., 309 # which don't. For the time being, punt. 310 if test x"long_double_math_on_this_cpu" = x"yes"; then 311 AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.]) 312 fi 313else 314 AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \ 315 ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \ 316 alarm access fork setmode fcntl \ 317 gettimeofday stat fstat lstat getpwuid vsnprintf dup \ 318 getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \ 319 getgid getpid getuid geteuid umask getegid \ 320 secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \ 321 freelocale uselocale strerror_l) 322fi 323 324# Check strerror_r, cannot be above as versions with two and three arguments exist 325LIBGFOR_CHECK_STRERROR_R 326 327# Check for C99 (and other IEEE) math functions 328GCC_CHECK_MATH_FUNC([acosf]) 329GCC_CHECK_MATH_FUNC([acos]) 330GCC_CHECK_MATH_FUNC([acosl]) 331GCC_CHECK_MATH_FUNC([acoshf]) 332GCC_CHECK_MATH_FUNC([acosh]) 333GCC_CHECK_MATH_FUNC([acoshl]) 334GCC_CHECK_MATH_FUNC([asinf]) 335GCC_CHECK_MATH_FUNC([asin]) 336GCC_CHECK_MATH_FUNC([asinl]) 337GCC_CHECK_MATH_FUNC([asinhf]) 338GCC_CHECK_MATH_FUNC([asinh]) 339GCC_CHECK_MATH_FUNC([asinhl]) 340GCC_CHECK_MATH_FUNC([atan2f]) 341GCC_CHECK_MATH_FUNC([atan2]) 342GCC_CHECK_MATH_FUNC([atan2l]) 343GCC_CHECK_MATH_FUNC([atanf]) 344GCC_CHECK_MATH_FUNC([atan]) 345GCC_CHECK_MATH_FUNC([atanl]) 346GCC_CHECK_MATH_FUNC([atanhf]) 347GCC_CHECK_MATH_FUNC([atanh]) 348GCC_CHECK_MATH_FUNC([atanhl]) 349GCC_CHECK_MATH_FUNC([cargf]) 350GCC_CHECK_MATH_FUNC([carg]) 351GCC_CHECK_MATH_FUNC([cargl]) 352GCC_CHECK_MATH_FUNC([ceilf]) 353GCC_CHECK_MATH_FUNC([ceil]) 354GCC_CHECK_MATH_FUNC([ceill]) 355GCC_CHECK_MATH_FUNC([copysignf]) 356GCC_CHECK_MATH_FUNC([copysign]) 357GCC_CHECK_MATH_FUNC([copysignl]) 358GCC_CHECK_MATH_FUNC([cosf]) 359GCC_CHECK_MATH_FUNC([cos]) 360GCC_CHECK_MATH_FUNC([cosl]) 361GCC_CHECK_MATH_FUNC([ccosf]) 362GCC_CHECK_MATH_FUNC([ccos]) 363GCC_CHECK_MATH_FUNC([ccosl]) 364GCC_CHECK_MATH_FUNC([coshf]) 365GCC_CHECK_MATH_FUNC([cosh]) 366GCC_CHECK_MATH_FUNC([coshl]) 367GCC_CHECK_MATH_FUNC([ccoshf]) 368GCC_CHECK_MATH_FUNC([ccosh]) 369GCC_CHECK_MATH_FUNC([ccoshl]) 370GCC_CHECK_MATH_FUNC([expf]) 371GCC_CHECK_MATH_FUNC([exp]) 372GCC_CHECK_MATH_FUNC([expl]) 373GCC_CHECK_MATH_FUNC([cexpf]) 374GCC_CHECK_MATH_FUNC([cexp]) 375GCC_CHECK_MATH_FUNC([cexpl]) 376GCC_CHECK_MATH_FUNC([fabsf]) 377GCC_CHECK_MATH_FUNC([fabs]) 378GCC_CHECK_MATH_FUNC([fabsl]) 379GCC_CHECK_MATH_FUNC([cabsf]) 380GCC_CHECK_MATH_FUNC([cabs]) 381GCC_CHECK_MATH_FUNC([cabsl]) 382GCC_CHECK_MATH_FUNC([floorf]) 383GCC_CHECK_MATH_FUNC([floor]) 384GCC_CHECK_MATH_FUNC([floorl]) 385GCC_CHECK_MATH_FUNC([fmodf]) 386GCC_CHECK_MATH_FUNC([fmod]) 387GCC_CHECK_MATH_FUNC([fmodl]) 388GCC_CHECK_MATH_FUNC([frexpf]) 389GCC_CHECK_MATH_FUNC([frexp]) 390GCC_CHECK_MATH_FUNC([frexpl]) 391GCC_CHECK_MATH_FUNC([hypotf]) 392GCC_CHECK_MATH_FUNC([hypot]) 393GCC_CHECK_MATH_FUNC([hypotl]) 394GCC_CHECK_MATH_FUNC([ldexpf]) 395GCC_CHECK_MATH_FUNC([ldexp]) 396GCC_CHECK_MATH_FUNC([ldexpl]) 397GCC_CHECK_MATH_FUNC([logf]) 398GCC_CHECK_MATH_FUNC([log]) 399GCC_CHECK_MATH_FUNC([logl]) 400GCC_CHECK_MATH_FUNC([clogf]) 401GCC_CHECK_MATH_FUNC([clog]) 402GCC_CHECK_MATH_FUNC([clogl]) 403GCC_CHECK_MATH_FUNC([log10f]) 404GCC_CHECK_MATH_FUNC([log10]) 405GCC_CHECK_MATH_FUNC([log10l]) 406GCC_CHECK_MATH_FUNC([clog10f]) 407GCC_CHECK_MATH_FUNC([clog10]) 408GCC_CHECK_MATH_FUNC([clog10l]) 409GCC_CHECK_MATH_FUNC([nextafterf]) 410GCC_CHECK_MATH_FUNC([nextafter]) 411GCC_CHECK_MATH_FUNC([nextafterl]) 412GCC_CHECK_MATH_FUNC([powf]) 413GCC_CHECK_MATH_FUNC([pow]) 414GCC_CHECK_MATH_FUNC([cpowf]) 415GCC_CHECK_MATH_FUNC([cpow]) 416GCC_CHECK_MATH_FUNC([cpowl]) 417GCC_CHECK_MATH_FUNC([roundf]) 418GCC_CHECK_MATH_FUNC([round]) 419GCC_CHECK_MATH_FUNC([roundl]) 420GCC_CHECK_MATH_FUNC([lroundf]) 421GCC_CHECK_MATH_FUNC([lround]) 422GCC_CHECK_MATH_FUNC([lroundl]) 423GCC_CHECK_MATH_FUNC([llroundf]) 424GCC_CHECK_MATH_FUNC([llround]) 425GCC_CHECK_MATH_FUNC([llroundl]) 426GCC_CHECK_MATH_FUNC([scalbnf]) 427GCC_CHECK_MATH_FUNC([scalbn]) 428GCC_CHECK_MATH_FUNC([scalbnl]) 429GCC_CHECK_MATH_FUNC([sinf]) 430GCC_CHECK_MATH_FUNC([sin]) 431GCC_CHECK_MATH_FUNC([sinl]) 432GCC_CHECK_MATH_FUNC([csinf]) 433GCC_CHECK_MATH_FUNC([csin]) 434GCC_CHECK_MATH_FUNC([csinl]) 435GCC_CHECK_MATH_FUNC([sinhf]) 436GCC_CHECK_MATH_FUNC([sinh]) 437GCC_CHECK_MATH_FUNC([sinhl]) 438GCC_CHECK_MATH_FUNC([csinhf]) 439GCC_CHECK_MATH_FUNC([csinh]) 440GCC_CHECK_MATH_FUNC([csinhl]) 441GCC_CHECK_MATH_FUNC([sqrtf]) 442GCC_CHECK_MATH_FUNC([sqrt]) 443GCC_CHECK_MATH_FUNC([sqrtl]) 444GCC_CHECK_MATH_FUNC([csqrtf]) 445GCC_CHECK_MATH_FUNC([csqrt]) 446GCC_CHECK_MATH_FUNC([csqrtl]) 447GCC_CHECK_MATH_FUNC([tanf]) 448GCC_CHECK_MATH_FUNC([tan]) 449GCC_CHECK_MATH_FUNC([tanl]) 450GCC_CHECK_MATH_FUNC([ctanf]) 451GCC_CHECK_MATH_FUNC([ctan]) 452GCC_CHECK_MATH_FUNC([ctanl]) 453GCC_CHECK_MATH_FUNC([tanhf]) 454GCC_CHECK_MATH_FUNC([tanh]) 455GCC_CHECK_MATH_FUNC([tanhl]) 456GCC_CHECK_MATH_FUNC([ctanhf]) 457GCC_CHECK_MATH_FUNC([ctanh]) 458GCC_CHECK_MATH_FUNC([ctanhl]) 459GCC_CHECK_MATH_FUNC([truncf]) 460GCC_CHECK_MATH_FUNC([trunc]) 461GCC_CHECK_MATH_FUNC([truncl]) 462GCC_CHECK_MATH_FUNC([erff]) 463GCC_CHECK_MATH_FUNC([erf]) 464GCC_CHECK_MATH_FUNC([erfcf]) 465GCC_CHECK_MATH_FUNC([erfc]) 466GCC_CHECK_MATH_FUNC([erfcl]) 467GCC_CHECK_MATH_FUNC([j0f]) 468GCC_CHECK_MATH_FUNC([j0]) 469GCC_CHECK_MATH_FUNC([j1f]) 470GCC_CHECK_MATH_FUNC([j1]) 471GCC_CHECK_MATH_FUNC([jnf]) 472GCC_CHECK_MATH_FUNC([jn]) 473GCC_CHECK_MATH_FUNC([jnl]) 474GCC_CHECK_MATH_FUNC([y0f]) 475GCC_CHECK_MATH_FUNC([y0]) 476GCC_CHECK_MATH_FUNC([y1f]) 477GCC_CHECK_MATH_FUNC([y1]) 478GCC_CHECK_MATH_FUNC([ynf]) 479GCC_CHECK_MATH_FUNC([yn]) 480GCC_CHECK_MATH_FUNC([ynl]) 481GCC_CHECK_MATH_FUNC([tgamma]) 482GCC_CHECK_MATH_FUNC([tgammaf]) 483GCC_CHECK_MATH_FUNC([lgamma]) 484GCC_CHECK_MATH_FUNC([lgammaf]) 485 486# Check for GFORTRAN_C99_1.1 funcs 487GCC_CHECK_MATH_FUNC([cacos]) 488GCC_CHECK_MATH_FUNC([cacosf]) 489GCC_CHECK_MATH_FUNC([cacosh]) 490GCC_CHECK_MATH_FUNC([cacoshf]) 491GCC_CHECK_MATH_FUNC([cacoshl]) 492GCC_CHECK_MATH_FUNC([cacosl]) 493GCC_CHECK_MATH_FUNC([casin]) 494GCC_CHECK_MATH_FUNC([casinf]) 495GCC_CHECK_MATH_FUNC([casinh]) 496GCC_CHECK_MATH_FUNC([casinhf]) 497GCC_CHECK_MATH_FUNC([casinhl]) 498GCC_CHECK_MATH_FUNC([casinl]) 499GCC_CHECK_MATH_FUNC([catan]) 500GCC_CHECK_MATH_FUNC([catanf]) 501GCC_CHECK_MATH_FUNC([catanh]) 502GCC_CHECK_MATH_FUNC([catanhf]) 503GCC_CHECK_MATH_FUNC([catanhl]) 504GCC_CHECK_MATH_FUNC([catanl]) 505 506# On AIX, clog is present in libm as __clog 507AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])]) 508 509# Check whether the system has a working stat() 510LIBGFOR_CHECK_WORKING_STAT 511 512# Check whether __mingw_snprintf() is present 513LIBGFOR_CHECK_MINGW_SNPRINTF 514 515# Check whether libquadmath should be used 516AC_ARG_ENABLE(libquadmath-support, 517AS_HELP_STRING([--disable-libquadmath-support], 518 [disable libquadmath support for Fortran]), 519ENABLE_LIBQUADMATH_SUPPORT=$enableval, 520ENABLE_LIBQUADMATH_SUPPORT=yes) 521enable_libquadmath_support= 522if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then 523 enable_libquadmath_support=no 524fi 525 526# Check whether we have a __float128 type, depends on enable_libquadmath_support 527LIBGFOR_CHECK_FLOAT128 528 529# Check for GNU libc feenableexcept 530AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])]) 531 532# At least for glibc, clock_gettime is in librt. But don't 533# pull that in if it still doesn't give us the function we want. This 534# test is copied from libgomp, and modified to not link in -lrt as 535# libgfortran calls clock_gettime via a weak reference if it's found 536# in librt. 537if test "$ac_cv_func_clock_gettime" = no; then 538 AC_CHECK_LIB(rt, clock_gettime, 539 [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1, 540 [Define to 1 if you have the `clock_gettime' function in librt.])]) 541fi 542 543# Check for SysV fpsetmask 544LIBGFOR_CHECK_FPSETMASK 545AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[ 546#ifdef HAVE_IEEEFP_H 547#include <ieeefp.h> 548#endif 549#include <math.h> 550]]) 551AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[ 552#ifdef HAVE_IEEEFP_H 553#include <ieeefp.h> 554#endif 555#include <math.h> 556]]) 557 558# Check whether we have fpsetsticky or fpresetsticky 559AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])]) 560AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])]) 561 562# Check for AIX fp_trap and fp_enable 563AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])]) 564AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])]) 565 566# Check if _SOFT_FLOAT is defined 567AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes]) 568 569# Runs configure.host to set up necessary host-dependent shell variables. 570# We then display a message about it, and propagate them through the 571# build chain. 572. ${srcdir}/configure.host 573AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h]) 574AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}]) 575FPU_HOST_HEADER=config/${fpu_host}.h 576AC_SUBST(FPU_HOST_HEADER) 577 578# Whether we will build the IEEE modules 579AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes]) 580AC_SUBST(IEEE_SUPPORT) 581 582# Some targets require additional compiler options for IEEE compatibility. 583IEEE_FLAGS="${ieee_flags}" 584AC_SUBST(IEEE_FLAGS) 585 586 587# Check for POSIX getpwuid_r 588# 589# There are two versions of getpwuid_r, the POSIX one with 5 590# arguments, and another one with 4 arguments used by at least HP-UX 591# 10.2. 592if test "$ac_cv_func_getpwuid_r" = "yes"; then 593 AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [ 594 AC_LINK_IFELSE([AC_LANG_PROGRAM([ 595#include <stdio.h> 596#include <sys/types.h> 597#include <pwd.h>], [ 598 getpwuid_r(0, NULL, NULL, 0, NULL); 599 ])], [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])]) 600fi 601if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then 602 AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.]) 603fi 604 605 606# Check out attribute support. 607LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY 608LIBGFOR_CHECK_ATTRIBUTE_ALIAS 609 610# Check out sync builtins support. 611LIBGFOR_CHECK_SYNC_FETCH_AND_ADD 612 613# Check out #pragma weak. 614LIBGFOR_GTHREAD_WEAK 615 616# Check out weakref support. 617LIBGFOR_CHECK_WEAKREF 618 619# Various other checks on target 620LIBGFOR_CHECK_UNLINK_OPEN_FILE 621 622# Check whether line terminator is LF or CRLF 623LIBGFOR_CHECK_CRLF 624 625# Check whether we support AVX extensions 626LIBGFOR_CHECK_AVX 627 628# Check wether we support AVX2 extensions 629LIBGFOR_CHECK_AVX2 630 631# Check wether we support AVX512f extensions 632LIBGFOR_CHECK_AVX512F 633 634# Check for FMA3 extensions 635LIBGFOR_CHECK_FMA3 636 637# Check for FMA4 extensions 638LIBGFOR_CHECK_FMA4 639 640# Check if AVX128 works 641LIBGFOR_CHECK_AVX128 642 643# Determine what GCC version number to use in filesystem paths. 644GCC_BASE_VER 645 646AC_CACHE_SAVE 647 648if test ${multilib} = yes; then 649 multilib_arg="--enable-multilib" 650else 651 multilib_arg= 652fi 653 654# Write our Makefile and spec file. 655AC_CONFIG_FILES([ 656Makefile 657libgfortran.spec 658]) 659AC_OUTPUT 660