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 $CFLAGS" 149fi 150AC_SUBST(AM_FCFLAGS) 151AC_SUBST(AM_CFLAGS) 152AC_SUBST(CFLAGS) 153 154# Check for symbol versioning (copied from libssp). 155AC_MSG_CHECKING([whether symbol versioning is supported]) 156AC_ARG_ENABLE(symvers, 157AS_HELP_STRING([--disable-symvers], 158 [disable symbol versioning for libgfortran]), 159gfortran_use_symver=$enableval, 160gfortran_use_symver=yes) 161if test "x$gfortran_use_symver" != xno; then 162 save_LDFLAGS="$LDFLAGS" 163 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" 164 cat > conftest.map <<EOF 165FOO_1.0 { 166 global: *foo*; bar; local: *; 167}; 168EOF 169 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no]) 170 if test x$gfortran_use_symver = xno; then 171 case "$target_os" in 172 solaris2*) 173 LDFLAGS="$save_LDFLAGS" 174 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" 175 # Sun ld cannot handle wildcards and treats all entries as undefined. 176 cat > conftest.map <<EOF 177FOO_1.0 { 178 global: foo; local: *; 179}; 180EOF 181 AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no]) 182 ;; 183 esac 184 fi 185 LDFLAGS="$save_LDFLAGS" 186fi 187AC_MSG_RESULT($gfortran_use_symver) 188AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno]) 189AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu]) 190AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun]) 191 192# For GPU offloading, not everything in libfortran can be supported. 193# Currently, the only target that has this problem is nvptx. The 194# following is a (partial) list of features that are unsupportable on 195# this particular target: 196# * Constructors 197# * alloca 198# * C library support for I/O, with printf as the one notable exception 199# * C library support for other features such as signal, environment 200# variables, time functions 201 202AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx]) 203 204# Figure out whether the compiler supports "-ffunction-sections -fdata-sections", 205# similarly to how libstdc++ does it 206ac_test_CFLAGS="${CFLAGS+set}" 207ac_save_CFLAGS="$CFLAGS" 208 209# Check for -ffunction-sections -fdata-sections 210AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections]) 211CFLAGS='-Werror -ffunction-sections -fdata-sections' 212AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no]) 213if test "$ac_test_CFLAGS" = set; then 214 CFLAGS="$ac_save_CFLAGS" 215else 216 # this is the suspicious part 217 CFLAGS="" 218fi 219if test x"$ac_fdsections" = x"yes"; then 220 SECTION_FLAGS='-ffunction-sections -fdata-sections' 221fi 222AC_MSG_RESULT($ac_fdsections) 223AC_SUBST(SECTION_FLAGS) 224 225# Find other programs we need. 226AC_CHECK_TOOL(AS, as) 227AC_CHECK_TOOL(AR, ar) 228AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 229AC_PROG_MAKE_SET 230AC_PROG_INSTALL 231 232# Configure libtool 233#AC_MSG_NOTICE([====== Starting libtool configuration]) 234AC_LIBTOOL_DLOPEN 235AM_PROG_LIBTOOL 236ACX_LT_HOST_FLAGS 237AC_SUBST(enable_shared) 238AC_SUBST(enable_static) 239#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10 240 241# We need gfortran to compile parts of the library 242#AC_PROG_FC(gfortran) 243FC="$GFORTRAN" 244AC_PROG_FC(gfortran) 245 246# extra LD Flags which are required for targets 247case "${host}" in 248 *-darwin*) 249 # Darwin needs -single_module when linking libgfortran 250 extra_ldflags_libgfortran=-Wl,-single_module 251 ;; 252esac 253AC_SUBST(extra_ldflags_libgfortran) 254 255# We need a working compiler at that point, otherwise give a clear 256# error message and bail out. 257LIBGFOR_WORKING_GFORTRAN 258 259AC_SYS_LARGEFILE 260 261# Types 262AC_TYPE_OFF_T 263AC_TYPE_INTPTR_T 264AC_TYPE_UINTPTR_T 265AC_CHECK_TYPES([ptrdiff_t]) 266 267# check header files (we assume C89 is available, so don't check for that) 268AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \ 269sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \ 270fpxcp.h pwd.h complex.h xlocale.h) 271 272GCC_HEADER_STDINT(gstdint.h) 273 274AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev]) 275 276case "${host}--x${with_newlib}" in 277 mips*--xyes) 278 hardwire_newlib=1;; 279esac 280 281# Check for library functions. 282if test "${hardwire_newlib:-0}" -eq 1; then 283 # We are being configured with a cross compiler. AC_REPLACE_FUNCS 284 # may not work correctly, because the compiler may not be able to 285 # link executables. 286 AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.]) 287 AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.]) 288 AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.]) 289 AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.]) 290 AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.]) 291 AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.]) 292 AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.]) 293 AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.]) 294 295 # At some point, we should differentiate between architectures 296 # like x86, which have long double versions, and alpha/powerpc/etc., 297 # which don't. For the time being, punt. 298 if test x"long_double_math_on_this_cpu" = x"yes"; then 299 AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.]) 300 fi 301else 302 AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \ 303 ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \ 304 alarm access fork setmode fcntl \ 305 gettimeofday stat fstat lstat getpwuid vsnprintf dup \ 306 getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \ 307 getgid getpid getuid geteuid umask getegid \ 308 secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \ 309 freelocale uselocale strerror_l) 310fi 311 312# Check strerror_r, cannot be above as versions with two and three arguments exist 313LIBGFOR_CHECK_STRERROR_R 314 315# Check for C99 (and other IEEE) math functions 316GCC_CHECK_MATH_FUNC([acosf]) 317GCC_CHECK_MATH_FUNC([acos]) 318GCC_CHECK_MATH_FUNC([acosl]) 319GCC_CHECK_MATH_FUNC([acoshf]) 320GCC_CHECK_MATH_FUNC([acosh]) 321GCC_CHECK_MATH_FUNC([acoshl]) 322GCC_CHECK_MATH_FUNC([asinf]) 323GCC_CHECK_MATH_FUNC([asin]) 324GCC_CHECK_MATH_FUNC([asinl]) 325GCC_CHECK_MATH_FUNC([asinhf]) 326GCC_CHECK_MATH_FUNC([asinh]) 327GCC_CHECK_MATH_FUNC([asinhl]) 328GCC_CHECK_MATH_FUNC([atan2f]) 329GCC_CHECK_MATH_FUNC([atan2]) 330GCC_CHECK_MATH_FUNC([atan2l]) 331GCC_CHECK_MATH_FUNC([atanf]) 332GCC_CHECK_MATH_FUNC([atan]) 333GCC_CHECK_MATH_FUNC([atanl]) 334GCC_CHECK_MATH_FUNC([atanhf]) 335GCC_CHECK_MATH_FUNC([atanh]) 336GCC_CHECK_MATH_FUNC([atanhl]) 337GCC_CHECK_MATH_FUNC([cargf]) 338GCC_CHECK_MATH_FUNC([carg]) 339GCC_CHECK_MATH_FUNC([cargl]) 340GCC_CHECK_MATH_FUNC([ceilf]) 341GCC_CHECK_MATH_FUNC([ceil]) 342GCC_CHECK_MATH_FUNC([ceill]) 343GCC_CHECK_MATH_FUNC([copysignf]) 344GCC_CHECK_MATH_FUNC([copysign]) 345GCC_CHECK_MATH_FUNC([copysignl]) 346GCC_CHECK_MATH_FUNC([cosf]) 347GCC_CHECK_MATH_FUNC([cos]) 348GCC_CHECK_MATH_FUNC([cosl]) 349GCC_CHECK_MATH_FUNC([ccosf]) 350GCC_CHECK_MATH_FUNC([ccos]) 351GCC_CHECK_MATH_FUNC([ccosl]) 352GCC_CHECK_MATH_FUNC([coshf]) 353GCC_CHECK_MATH_FUNC([cosh]) 354GCC_CHECK_MATH_FUNC([coshl]) 355GCC_CHECK_MATH_FUNC([ccoshf]) 356GCC_CHECK_MATH_FUNC([ccosh]) 357GCC_CHECK_MATH_FUNC([ccoshl]) 358GCC_CHECK_MATH_FUNC([expf]) 359GCC_CHECK_MATH_FUNC([exp]) 360GCC_CHECK_MATH_FUNC([expl]) 361GCC_CHECK_MATH_FUNC([cexpf]) 362GCC_CHECK_MATH_FUNC([cexp]) 363GCC_CHECK_MATH_FUNC([cexpl]) 364GCC_CHECK_MATH_FUNC([fabsf]) 365GCC_CHECK_MATH_FUNC([fabs]) 366GCC_CHECK_MATH_FUNC([fabsl]) 367GCC_CHECK_MATH_FUNC([cabsf]) 368GCC_CHECK_MATH_FUNC([cabs]) 369GCC_CHECK_MATH_FUNC([cabsl]) 370GCC_CHECK_MATH_FUNC([floorf]) 371GCC_CHECK_MATH_FUNC([floor]) 372GCC_CHECK_MATH_FUNC([floorl]) 373GCC_CHECK_MATH_FUNC([fmodf]) 374GCC_CHECK_MATH_FUNC([fmod]) 375GCC_CHECK_MATH_FUNC([fmodl]) 376GCC_CHECK_MATH_FUNC([frexpf]) 377GCC_CHECK_MATH_FUNC([frexp]) 378GCC_CHECK_MATH_FUNC([frexpl]) 379GCC_CHECK_MATH_FUNC([hypotf]) 380GCC_CHECK_MATH_FUNC([hypot]) 381GCC_CHECK_MATH_FUNC([hypotl]) 382GCC_CHECK_MATH_FUNC([ldexpf]) 383GCC_CHECK_MATH_FUNC([ldexp]) 384GCC_CHECK_MATH_FUNC([ldexpl]) 385GCC_CHECK_MATH_FUNC([logf]) 386GCC_CHECK_MATH_FUNC([log]) 387GCC_CHECK_MATH_FUNC([logl]) 388GCC_CHECK_MATH_FUNC([clogf]) 389GCC_CHECK_MATH_FUNC([clog]) 390GCC_CHECK_MATH_FUNC([clogl]) 391GCC_CHECK_MATH_FUNC([log10f]) 392GCC_CHECK_MATH_FUNC([log10]) 393GCC_CHECK_MATH_FUNC([log10l]) 394GCC_CHECK_MATH_FUNC([clog10f]) 395GCC_CHECK_MATH_FUNC([clog10]) 396GCC_CHECK_MATH_FUNC([clog10l]) 397GCC_CHECK_MATH_FUNC([nextafterf]) 398GCC_CHECK_MATH_FUNC([nextafter]) 399GCC_CHECK_MATH_FUNC([nextafterl]) 400GCC_CHECK_MATH_FUNC([powf]) 401GCC_CHECK_MATH_FUNC([pow]) 402GCC_CHECK_MATH_FUNC([cpowf]) 403GCC_CHECK_MATH_FUNC([cpow]) 404GCC_CHECK_MATH_FUNC([cpowl]) 405GCC_CHECK_MATH_FUNC([roundf]) 406GCC_CHECK_MATH_FUNC([round]) 407GCC_CHECK_MATH_FUNC([roundl]) 408GCC_CHECK_MATH_FUNC([lroundf]) 409GCC_CHECK_MATH_FUNC([lround]) 410GCC_CHECK_MATH_FUNC([lroundl]) 411GCC_CHECK_MATH_FUNC([llroundf]) 412GCC_CHECK_MATH_FUNC([llround]) 413GCC_CHECK_MATH_FUNC([llroundl]) 414GCC_CHECK_MATH_FUNC([scalbnf]) 415GCC_CHECK_MATH_FUNC([scalbn]) 416GCC_CHECK_MATH_FUNC([scalbnl]) 417GCC_CHECK_MATH_FUNC([sinf]) 418GCC_CHECK_MATH_FUNC([sin]) 419GCC_CHECK_MATH_FUNC([sinl]) 420GCC_CHECK_MATH_FUNC([csinf]) 421GCC_CHECK_MATH_FUNC([csin]) 422GCC_CHECK_MATH_FUNC([csinl]) 423GCC_CHECK_MATH_FUNC([sinhf]) 424GCC_CHECK_MATH_FUNC([sinh]) 425GCC_CHECK_MATH_FUNC([sinhl]) 426GCC_CHECK_MATH_FUNC([csinhf]) 427GCC_CHECK_MATH_FUNC([csinh]) 428GCC_CHECK_MATH_FUNC([csinhl]) 429GCC_CHECK_MATH_FUNC([sqrtf]) 430GCC_CHECK_MATH_FUNC([sqrt]) 431GCC_CHECK_MATH_FUNC([sqrtl]) 432GCC_CHECK_MATH_FUNC([csqrtf]) 433GCC_CHECK_MATH_FUNC([csqrt]) 434GCC_CHECK_MATH_FUNC([csqrtl]) 435GCC_CHECK_MATH_FUNC([tanf]) 436GCC_CHECK_MATH_FUNC([tan]) 437GCC_CHECK_MATH_FUNC([tanl]) 438GCC_CHECK_MATH_FUNC([ctanf]) 439GCC_CHECK_MATH_FUNC([ctan]) 440GCC_CHECK_MATH_FUNC([ctanl]) 441GCC_CHECK_MATH_FUNC([tanhf]) 442GCC_CHECK_MATH_FUNC([tanh]) 443GCC_CHECK_MATH_FUNC([tanhl]) 444GCC_CHECK_MATH_FUNC([ctanhf]) 445GCC_CHECK_MATH_FUNC([ctanh]) 446GCC_CHECK_MATH_FUNC([ctanhl]) 447GCC_CHECK_MATH_FUNC([truncf]) 448GCC_CHECK_MATH_FUNC([trunc]) 449GCC_CHECK_MATH_FUNC([truncl]) 450GCC_CHECK_MATH_FUNC([erff]) 451GCC_CHECK_MATH_FUNC([erf]) 452GCC_CHECK_MATH_FUNC([erfcf]) 453GCC_CHECK_MATH_FUNC([erfc]) 454GCC_CHECK_MATH_FUNC([erfcl]) 455GCC_CHECK_MATH_FUNC([j0f]) 456GCC_CHECK_MATH_FUNC([j0]) 457GCC_CHECK_MATH_FUNC([j1f]) 458GCC_CHECK_MATH_FUNC([j1]) 459GCC_CHECK_MATH_FUNC([jnf]) 460GCC_CHECK_MATH_FUNC([jn]) 461GCC_CHECK_MATH_FUNC([jnl]) 462GCC_CHECK_MATH_FUNC([y0f]) 463GCC_CHECK_MATH_FUNC([y0]) 464GCC_CHECK_MATH_FUNC([y1f]) 465GCC_CHECK_MATH_FUNC([y1]) 466GCC_CHECK_MATH_FUNC([ynf]) 467GCC_CHECK_MATH_FUNC([yn]) 468GCC_CHECK_MATH_FUNC([ynl]) 469GCC_CHECK_MATH_FUNC([tgamma]) 470GCC_CHECK_MATH_FUNC([tgammaf]) 471GCC_CHECK_MATH_FUNC([lgamma]) 472GCC_CHECK_MATH_FUNC([lgammaf]) 473 474# Check for GFORTRAN_C99_1.1 funcs 475GCC_CHECK_MATH_FUNC([cacos]) 476GCC_CHECK_MATH_FUNC([cacosf]) 477GCC_CHECK_MATH_FUNC([cacosh]) 478GCC_CHECK_MATH_FUNC([cacoshf]) 479GCC_CHECK_MATH_FUNC([cacoshl]) 480GCC_CHECK_MATH_FUNC([cacosl]) 481GCC_CHECK_MATH_FUNC([casin]) 482GCC_CHECK_MATH_FUNC([casinf]) 483GCC_CHECK_MATH_FUNC([casinh]) 484GCC_CHECK_MATH_FUNC([casinhf]) 485GCC_CHECK_MATH_FUNC([casinhl]) 486GCC_CHECK_MATH_FUNC([casinl]) 487GCC_CHECK_MATH_FUNC([catan]) 488GCC_CHECK_MATH_FUNC([catanf]) 489GCC_CHECK_MATH_FUNC([catanh]) 490GCC_CHECK_MATH_FUNC([catanhf]) 491GCC_CHECK_MATH_FUNC([catanhl]) 492GCC_CHECK_MATH_FUNC([catanl]) 493 494# On AIX, clog is present in libm as __clog 495AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])]) 496 497# Check whether the system has a working stat() 498LIBGFOR_CHECK_WORKING_STAT 499 500# Check whether __mingw_snprintf() is present 501LIBGFOR_CHECK_MINGW_SNPRINTF 502 503# Check whether libquadmath should be used 504AC_ARG_ENABLE(libquadmath-support, 505AS_HELP_STRING([--disable-libquadmath-support], 506 [disable libquadmath support for Fortran]), 507ENABLE_LIBQUADMATH_SUPPORT=$enableval, 508ENABLE_LIBQUADMATH_SUPPORT=yes) 509enable_libquadmath_support= 510if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then 511 enable_libquadmath_support=no 512fi 513 514# Check whether we have a __float128 type, depends on enable_libquadmath_support 515LIBGFOR_CHECK_FLOAT128 516 517# Check for GNU libc feenableexcept 518AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])]) 519 520# At least for glibc, clock_gettime is in librt. But don't 521# pull that in if it still doesn't give us the function we want. This 522# test is copied from libgomp, and modified to not link in -lrt as 523# libgfortran calls clock_gettime via a weak reference if it's found 524# in librt. 525if test "$ac_cv_func_clock_gettime" = no; then 526 AC_CHECK_LIB(rt, clock_gettime, 527 [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1, 528 [Define to 1 if you have the `clock_gettime' function in librt.])]) 529fi 530 531# Check for SysV fpsetmask 532LIBGFOR_CHECK_FPSETMASK 533AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[ 534#ifdef HAVE_IEEEFP_H 535#include <ieeefp.h> 536#endif 537#include <math.h> 538]]) 539AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[ 540#ifdef HAVE_IEEEFP_H 541#include <ieeefp.h> 542#endif 543#include <math.h> 544]]) 545 546# Check whether we have fpsetsticky or fpresetsticky 547AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])]) 548AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])]) 549 550# Check for AIX fp_trap and fp_enable 551AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])]) 552AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])]) 553 554# Check if _SOFT_FLOAT is defined 555AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes]) 556 557# Runs configure.host to set up necessary host-dependent shell variables. 558# We then display a message about it, and propagate them through the 559# build chain. 560. ${srcdir}/configure.host 561AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h]) 562AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}]) 563FPU_HOST_HEADER=config/${fpu_host}.h 564AC_SUBST(FPU_HOST_HEADER) 565 566# Whether we will build the IEEE modules 567AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes]) 568AC_SUBST(IEEE_SUPPORT) 569 570# Some targets require additional compiler options for IEEE compatibility. 571IEEE_FLAGS="${ieee_flags}" 572AC_SUBST(IEEE_FLAGS) 573 574 575# Check for POSIX getpwuid_r 576# 577# There are two versions of getpwuid_r, the POSIX one with 5 578# arguments, and another one with 4 arguments used by at least HP-UX 579# 10.2. 580if test "$ac_cv_func_getpwuid_r" = "yes"; then 581 AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [ 582 AC_LINK_IFELSE([AC_LANG_PROGRAM([ 583#include <stdio.h> 584#include <sys/types.h> 585#include <pwd.h>], [ 586 getpwuid_r(0, NULL, NULL, 0, NULL); 587 ])], [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])]) 588fi 589if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then 590 AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.]) 591fi 592 593 594# Check out attribute support. 595LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY 596LIBGFOR_CHECK_ATTRIBUTE_ALIAS 597 598# Check out sync builtins support. 599LIBGFOR_CHECK_SYNC_FETCH_AND_ADD 600 601# Check out #pragma weak. 602LIBGFOR_GTHREAD_WEAK 603 604# Check out weakref support. 605LIBGFOR_CHECK_WEAKREF 606 607# Various other checks on target 608LIBGFOR_CHECK_UNLINK_OPEN_FILE 609 610# Check whether line terminator is LF or CRLF 611LIBGFOR_CHECK_CRLF 612 613AC_CACHE_SAVE 614 615if test ${multilib} = yes; then 616 multilib_arg="--enable-multilib" 617else 618 multilib_arg= 619fi 620 621# Write our Makefile and spec file. 622AC_CONFIG_FILES([ 623Makefile 624libgfortran.spec 625]) 626AC_OUTPUT 627