libgfortran/configure.ac

   1 # Process this file with autoconf to produce a configure script, like so:
   2 # aclocal && autoconf && autoheader && automake
   3
   4 AC_INIT([GNU Fortran Runtime Library], 0.3,,[libgfortran])
   5 AC_CONFIG_HEADER(config.h)
   6 GCC_TOPLEV_SUBDIRS
   7
   8 # -------
   9 # Options
  10 # -------
  11
  12 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
  13 AC_ARG_ENABLE(version-specific-runtime-libs,
  14 AS_HELP_STRING([--enable-version-specific-runtime-libs],
  15   [specify that runtime libraries should be installed in a compiler-specific directory]),
  16 [case "$enableval" in
  17  yes) version_specific_libs=yes ;;
  18  no)  version_specific_libs=no ;;
  19  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
  20  esac],
  21 [version_specific_libs=no])
  22 AC_MSG_RESULT($version_specific_libs)
  23
  24 # Build with intermodule optimisations
  25 AC_MSG_CHECKING([for --enable-intermodule])
  26 AC_ARG_ENABLE(intermodule,
  27 AS_HELP_STRING([--enable-intermodule],[build the library in one step]),
  28 [case "$enable_intermodule" in
  29   yes) onestep="-onestep";;
  30     *) onestep="";;
  31 esac],
  32 [onestep=""])
  33 AC_MSG_RESULT($enable_intermodule)
  34 AM_CONDITIONAL(onestep,[test x$onestep = x-onestep])
  35 AC_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 $with_cross_host.
  49 #
  50 # Do not delete or change the following two lines.  For why, see
  51 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
  52 AC_CANONICAL_SYSTEM
  53 ACX_NONCANONICAL_TARGET
  54
  55 target_alias=${target_alias-$host_alias}
  56 AC_SUBST(target_alias)
  57
  58 # Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
  59 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
  60 #  1.9.6:  minimum required version
  61 #  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
  62 #              of other PACKAGE_* variables will, however, and there's nothing
  63 #              we can do about that; they come from AC_INIT).
  64 #  foreign:  we don't follow the normal rules for GNU packages (no COPYING
  65 #            file in the top srcdir, etc, etc), so stop complaining.
  66 #  no-dist:  we don't want 'dist' and related rules.
  67 #  -Wall:  turns on all automake warnings...
  68 #  -Wno-portability:  ...except this one, since GNU make is required.
  69 AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability])
  70
  71 AM_MAINTAINER_MODE
  72 AM_ENABLE_MULTILIB(, ..)
  73
  74 # Handy for debugging:
  75 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
  76
  77 # Are we being configured with some form of cross compiler?
  78 # NB: We don't actually need to know this just now, but when, say, a test
  79 #     suite is included, we'll have to know.
  80 if test "$build" != "$host"; then
  81   LIBGFOR_IS_NATIVE=false
  82   GCC_NO_EXECUTABLES
  83 else
  84   LIBGFOR_IS_NATIVE=true
  85 fi
  86
  87 AC_USE_SYSTEM_EXTENSIONS
  88
  89 GCC_WITH_TOOLEXECLIBDIR
  90
  91 # Calculate toolexeclibdir
  92 # Also toolexecdir, though it's only used in toolexeclibdir
  93 case ${version_specific_libs} in
  94   yes)
  95     # Need the gcc compiler version to know where to install libraries
  96     # and header files if --enable-version-specific-runtime-libs option
  97     # is selected.
  98     toolexecdir='$(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/$multi_os_directory ;;
 122     esac
 123     ;;
 124 esac
 125 AC_SUBST(toolexecdir)
 126 AC_SUBST(toolexeclibdir)
 127
 128 # Create a spec file, so that compile/link tests don't fail
 129 test -f libgfortran.spec || touch libgfortran.spec
 130
 131 AC_LANG_C
 132 # Check the compiler.
 133 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
 134 # We must force CC to /not/ be precious variables; otherwise
 135 # the wrong, non-multilib-adjusted value will be used in multilibs.
 136 # As a side effect, we have to subst CFLAGS ourselves.
 137
 138 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 139 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 140 AC_PROG_CC
 141 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 142
 143 AC_SUBST(CFLAGS)
 144
 145 AM_PROG_CC_C_O
 146
 147 # Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
 148 have_real_17=no
 149 if test "x$GCC" = "xyes"; then
 150   AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
 151   ## We like to use C11 and C99 routines when available.  This makes
 152   ## sure that
 153   ## __STDC_VERSION__ is set such that libc includes make them available.
 154   AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla"
 155   ## Compile the following tests with the same system header contents
 156   ## that we'll encounter when compiling our own source files.
 157   CFLAGS="-std=gnu11 $CFLAGS"
 158
 159   case x$target in
 160     xpowerpc64le*-linux*)
 161       AC_PREPROC_IFELSE(
 162         [AC_LANG_PROGRAM([[#if __SIZEOF_LONG_DOUBLE__ != 16
 163                            #error long double is double
 164                            #endif]],
 165                          [[(void) 0;]])],
 166         [AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 167          AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 168          CFLAGS="$CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 169          have_real_17=yes])
 170       ;;
 171     *)
 172       ;;
 173   esac
 174 fi
 175 AM_CONDITIONAL([HAVE_REAL_17], [test "x$have_real_17" != xno])
 176
 177 # Add CET specific flags if CET is enabled
 178 GCC_CET_FLAGS(CET_FLAGS)
 179 AM_FCFLAGS="$AM_FCFLAGS $CET_FLAGS"
 180 AM_CFLAGS="$AM_CFLAGS $CET_FLAGS"
 181 CFLAGS="$CFLAGS $CET_FLAGS"
 182
 183 AC_SUBST(AM_FCFLAGS)
 184 AC_SUBST(AM_CFLAGS)
 185 AC_SUBST(CFLAGS)
 186
 187 # Check for symbol versioning (copied from libssp).
 188 AC_MSG_CHECKING([whether symbol versioning is supported])
 189 AC_ARG_ENABLE(symvers,
 190 AS_HELP_STRING([--disable-symvers],
 191   [disable symbol versioning for libgfortran]),
 192 gfortran_use_symver=$enableval,
 193 gfortran_use_symver=yes)
 194 if test "x$gfortran_use_symver" != xno; then
 195   save_LDFLAGS="$LDFLAGS"
 196   LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
 197   cat > conftest.map <<EOF
 198 FOO_1.0 {
 199   global: *foo*; bar; local: *;
 200 };
 201 EOF
 202   AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
 203   if test x$gfortran_use_symver = xno; then
 204     case "$target_os" in
 205       solaris2*)
 206         LDFLAGS="$save_LDFLAGS"
 207         LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
 208         # Sun ld cannot handle wildcards and treats all entries as undefined.
 209         cat > conftest.map <<EOF
 210 FOO_1.0 {
 211   global: foo; local: *;
 212 };
 213 EOF
 214         AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no])
 215         ;;
 216     esac
 217   fi
 218   LDFLAGS="$save_LDFLAGS"
 219 fi
 220 AC_MSG_RESULT($gfortran_use_symver)
 221 AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
 222 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
 223 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun])
 224
 225 # For GPU offloading, not everything in libfortran can be supported.
 226 # Currently, the only target that has this problem is nvptx.  The
 227 # following is a (partial) list of features that are unsupportable on
 228 # this particular target:
 229 # * Constructors
 230 # * alloca
 231 # * C library support for I/O, with printf as the one notable exception
 232 # * C library support for other features such as signal, environment
 233 #   variables, time functions
 234
 235 AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx])
 236
 237 # Some compiler target support may have limited support for integer
 238 # or floating point numbers – or may want to reduce the libgfortran size
 239 # although they do have the support.
 240 LIBGOMP_CHECKED_INT_KINDS="1 2 4 8 16"
 241 LIBGOMP_CHECKED_REAL_KINDS="4 8 10 16"
 242
 243 AC_SUBST(LIBGOMP_CHECKED_INT_KINDS)
 244 AC_SUBST(LIBGOMP_CHECKED_REAL_KINDS)
 245
 246 # Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
 247 # similarly to how libstdc++ does it
 248 ac_test_CFLAGS="${CFLAGS+set}"
 249 ac_save_CFLAGS="$CFLAGS"
 250
 251 # Check for -ffunction-sections -fdata-sections
 252 AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
 253 CFLAGS='-Werror -ffunction-sections -fdata-sections'
 254 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no])
 255 if test "$ac_test_CFLAGS" = set; then
 256   CFLAGS="$ac_save_CFLAGS"
 257 else
 258   # this is the suspicious part
 259   CFLAGS=""
 260 fi
 261 if test x"$ac_fdsections" = x"yes"; then
 262   SECTION_FLAGS='-ffunction-sections -fdata-sections'
 263 fi
 264 AC_MSG_RESULT($ac_fdsections)
 265 AC_SUBST(SECTION_FLAGS)
 266
 267 # Check linker hardware capability support.
 268 GCC_CHECK_LINKER_HWCAP
 269
 270 # Find other programs we need.
 271 AC_CHECK_TOOL(AS, as)
 272 AC_CHECK_TOOL(AR, ar)
 273 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 274 AC_PROG_MAKE_SET
 275 AC_PROG_INSTALL
 276
 277 # Configure libtool
 278 #AC_MSG_NOTICE([====== Starting libtool configuration])
 279 AC_LIBTOOL_DLOPEN
 280 AM_PROG_LIBTOOL
 281 LT_LIB_M
 282 ACX_LT_HOST_FLAGS
 283 AC_SUBST(enable_shared)
 284 AC_SUBST(enable_static)
 285 #AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
 286
 287 # We need gfortran to compile parts of the library
 288 #AC_PROG_FC(gfortran)
 289 FC="$GFORTRAN"
 290 AC_PROG_FC(gfortran)
 291
 292 # extra LD Flags which are required for targets
 293 case "${host}" in
 294   *-darwin*)
 295     # Darwin needs -single_module when linking libgfortran
 296     extra_ldflags_libgfortran=-Wl,-single_module
 297     ;;
 298 esac
 299 AC_SUBST(extra_ldflags_libgfortran)
 300
 301 # We need a working compiler at that point, otherwise give a clear
 302 # error message and bail out.
 303 LIBGFOR_WORKING_GFORTRAN
 304
 305 AC_SYS_LARGEFILE
 306
 307 # Types
 308 AC_TYPE_OFF_T
 309 AC_TYPE_INTPTR_T
 310 AC_TYPE_UINTPTR_T
 311 AC_CHECK_TYPES([ptrdiff_t])
 312
 313 # check header files (we assume C89 is available, so don't check for that)
 314 AC_CHECK_HEADERS_ONCE(unistd.h sys/random.h sys/time.h sys/times.h \
 315 sys/resource.h sys/types.h sys/stat.h sys/uio.h sys/wait.h \
 316 floatingpoint.h ieeefp.h fenv.h fptrap.h \
 317 fpxcp.h pwd.h complex.h xlocale.h)
 318
 319 GCC_HEADER_STDINT(gstdint.h)
 320
 321 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
 322
 323 case "${host}--x${with_newlib}" in
 324   mips*--xyes)
 325     hardwire_newlib=1;;
 326   nvptx*--xyes)
 327     hardwire_newlib=1;;
 328 esac
 329
 330 # Check for library functions.
 331 if test "${hardwire_newlib:-0}" -eq 1; then
 332    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
 333    # may not work correctly, because the compiler may not be able to
 334    # link executables.
 335    AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.])
 336    AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.])
 337    AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.])
 338    AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.])
 339    AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.])
 340    AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.])
 341    AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.])
 342    AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.])
 343
 344    # At some point, we should differentiate between architectures
 345    # like x86, which have long double versions, and alpha/powerpc/etc.,
 346    # which don't. For the time being, punt.
 347    if test x"long_double_math_on_this_cpu" = x"yes"; then
 348      AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.])
 349    fi
 350 else
 351    AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
 352    ftruncate chsize chdir getentropy getlogin gethostname kill link symlink \
 353    sleep ttyname sigaction waitpid \
 354    alarm access fork posix_spawn setmode fcntl writev \
 355    gettimeofday stat fstat lstat getpwuid vsnprintf dup \
 356    getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \
 357    getgid getpid getuid geteuid umask getegid \
 358    secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \
 359    freelocale uselocale strerror_l)
 360 fi
 361
 362 # Check strerror_r, cannot be above as versions with two and three arguments exist
 363 LIBGFOR_CHECK_STRERROR_R
 364
 365 # Check for C99 (and other IEEE) math functions
 366 GCC_CHECK_MATH_FUNC([acosf])
 367 GCC_CHECK_MATH_FUNC([acos])
 368 GCC_CHECK_MATH_FUNC([acosl])
 369 GCC_CHECK_MATH_FUNC([acoshf])
 370 GCC_CHECK_MATH_FUNC([acosh])
 371 GCC_CHECK_MATH_FUNC([acoshl])
 372 GCC_CHECK_MATH_FUNC([asinf])
 373 GCC_CHECK_MATH_FUNC([asin])
 374 GCC_CHECK_MATH_FUNC([asinl])
 375 GCC_CHECK_MATH_FUNC([asinhf])
 376 GCC_CHECK_MATH_FUNC([asinh])
 377 GCC_CHECK_MATH_FUNC([asinhl])
 378 GCC_CHECK_MATH_FUNC([atan2f])
 379 GCC_CHECK_MATH_FUNC([atan2])
 380 GCC_CHECK_MATH_FUNC([atan2l])
 381 GCC_CHECK_MATH_FUNC([atanf])
 382 GCC_CHECK_MATH_FUNC([atan])
 383 GCC_CHECK_MATH_FUNC([atanl])
 384 GCC_CHECK_MATH_FUNC([atanhf])
 385 GCC_CHECK_MATH_FUNC([atanh])
 386 GCC_CHECK_MATH_FUNC([atanhl])
 387 GCC_CHECK_MATH_FUNC([cargf])
 388 GCC_CHECK_MATH_FUNC([carg])
 389 GCC_CHECK_MATH_FUNC([cargl])
 390 GCC_CHECK_MATH_FUNC([ceilf])
 391 GCC_CHECK_MATH_FUNC([ceil])
 392 GCC_CHECK_MATH_FUNC([ceill])
 393 GCC_CHECK_MATH_FUNC([copysignf])
 394 GCC_CHECK_MATH_FUNC([copysign])
 395 GCC_CHECK_MATH_FUNC([copysignl])
 396 GCC_CHECK_MATH_FUNC([cosf])
 397 GCC_CHECK_MATH_FUNC([cos])
 398 GCC_CHECK_MATH_FUNC([cosl])
 399 GCC_CHECK_MATH_FUNC([ccosf])
 400 GCC_CHECK_MATH_FUNC([ccos])
 401 GCC_CHECK_MATH_FUNC([ccosl])
 402 GCC_CHECK_MATH_FUNC([coshf])
 403 GCC_CHECK_MATH_FUNC([cosh])
 404 GCC_CHECK_MATH_FUNC([coshl])
 405 GCC_CHECK_MATH_FUNC([ccoshf])
 406 GCC_CHECK_MATH_FUNC([ccosh])
 407 GCC_CHECK_MATH_FUNC([ccoshl])
 408 GCC_CHECK_MATH_FUNC([expf])
 409 GCC_CHECK_MATH_FUNC([exp])
 410 GCC_CHECK_MATH_FUNC([expl])
 411 GCC_CHECK_MATH_FUNC([cexpf])
 412 GCC_CHECK_MATH_FUNC([cexp])
 413 GCC_CHECK_MATH_FUNC([cexpl])
 414 GCC_CHECK_MATH_FUNC([fabsf])
 415 GCC_CHECK_MATH_FUNC([fabs])
 416 GCC_CHECK_MATH_FUNC([fabsl])
 417 GCC_CHECK_MATH_FUNC([cabsf])
 418 GCC_CHECK_MATH_FUNC([cabs])
 419 GCC_CHECK_MATH_FUNC([cabsl])
 420 GCC_CHECK_MATH_FUNC([floorf])
 421 GCC_CHECK_MATH_FUNC([floor])
 422 GCC_CHECK_MATH_FUNC([floorl])
 423 GCC_CHECK_MATH_FUNC([fmaf])
 424 GCC_CHECK_MATH_FUNC([fma])
 425 GCC_CHECK_MATH_FUNC([fmal])
 426 GCC_CHECK_MATH_FUNC([fmodf])
 427 GCC_CHECK_MATH_FUNC([fmod])
 428 GCC_CHECK_MATH_FUNC([fmodl])
 429 GCC_CHECK_MATH_FUNC([frexpf])
 430 GCC_CHECK_MATH_FUNC([frexp])
 431 GCC_CHECK_MATH_FUNC([frexpl])
 432 GCC_CHECK_MATH_FUNC([hypotf])
 433 GCC_CHECK_MATH_FUNC([hypot])
 434 GCC_CHECK_MATH_FUNC([hypotl])
 435 GCC_CHECK_MATH_FUNC([ldexpf])
 436 GCC_CHECK_MATH_FUNC([ldexp])
 437 GCC_CHECK_MATH_FUNC([ldexpl])
 438 GCC_CHECK_MATH_FUNC([logf])
 439 GCC_CHECK_MATH_FUNC([log])
 440 GCC_CHECK_MATH_FUNC([logl])
 441 GCC_CHECK_MATH_FUNC([clogf])
 442 GCC_CHECK_MATH_FUNC([clog])
 443 GCC_CHECK_MATH_FUNC([clogl])
 444 GCC_CHECK_MATH_FUNC([log10f])
 445 GCC_CHECK_MATH_FUNC([log10])
 446 GCC_CHECK_MATH_FUNC([log10l])
 447 GCC_CHECK_MATH_FUNC([clog10f])
 448 GCC_CHECK_MATH_FUNC([clog10])
 449 GCC_CHECK_MATH_FUNC([clog10l])
 450 GCC_CHECK_MATH_FUNC([nextafterf])
 451 GCC_CHECK_MATH_FUNC([nextafter])
 452 GCC_CHECK_MATH_FUNC([nextafterl])
 453 GCC_CHECK_MATH_FUNC([powf])
 454 GCC_CHECK_MATH_FUNC([pow])
 455 GCC_CHECK_MATH_FUNC([cpowf])
 456 GCC_CHECK_MATH_FUNC([cpow])
 457 GCC_CHECK_MATH_FUNC([cpowl])
 458 GCC_CHECK_MATH_FUNC([roundf])
 459 GCC_CHECK_MATH_FUNC([round])
 460 GCC_CHECK_MATH_FUNC([roundl])
 461 GCC_CHECK_MATH_FUNC([lroundf])
 462 GCC_CHECK_MATH_FUNC([lround])
 463 GCC_CHECK_MATH_FUNC([lroundl])
 464 GCC_CHECK_MATH_FUNC([llroundf])
 465 GCC_CHECK_MATH_FUNC([llround])
 466 GCC_CHECK_MATH_FUNC([llroundl])
 467 GCC_CHECK_MATH_FUNC([scalbnf])
 468 GCC_CHECK_MATH_FUNC([scalbn])
 469 GCC_CHECK_MATH_FUNC([scalbnl])
 470 GCC_CHECK_MATH_FUNC([sinf])
 471 GCC_CHECK_MATH_FUNC([sin])
 472 GCC_CHECK_MATH_FUNC([sinl])
 473 GCC_CHECK_MATH_FUNC([csinf])
 474 GCC_CHECK_MATH_FUNC([csin])
 475 GCC_CHECK_MATH_FUNC([csinl])
 476 GCC_CHECK_MATH_FUNC([sinhf])
 477 GCC_CHECK_MATH_FUNC([sinh])
 478 GCC_CHECK_MATH_FUNC([sinhl])
 479 GCC_CHECK_MATH_FUNC([csinhf])
 480 GCC_CHECK_MATH_FUNC([csinh])
 481 GCC_CHECK_MATH_FUNC([csinhl])
 482 GCC_CHECK_MATH_FUNC([sqrtf])
 483 GCC_CHECK_MATH_FUNC([sqrt])
 484 GCC_CHECK_MATH_FUNC([sqrtl])
 485 GCC_CHECK_MATH_FUNC([csqrtf])
 486 GCC_CHECK_MATH_FUNC([csqrt])
 487 GCC_CHECK_MATH_FUNC([csqrtl])
 488 GCC_CHECK_MATH_FUNC([tanf])
 489 GCC_CHECK_MATH_FUNC([tan])
 490 GCC_CHECK_MATH_FUNC([tanl])
 491 GCC_CHECK_MATH_FUNC([ctanf])
 492 GCC_CHECK_MATH_FUNC([ctan])
 493 GCC_CHECK_MATH_FUNC([ctanl])
 494 GCC_CHECK_MATH_FUNC([tanhf])
 495 GCC_CHECK_MATH_FUNC([tanh])
 496 GCC_CHECK_MATH_FUNC([tanhl])
 497 GCC_CHECK_MATH_FUNC([ctanhf])
 498 GCC_CHECK_MATH_FUNC([ctanh])
 499 GCC_CHECK_MATH_FUNC([ctanhl])
 500 GCC_CHECK_MATH_FUNC([truncf])
 501 GCC_CHECK_MATH_FUNC([trunc])
 502 GCC_CHECK_MATH_FUNC([truncl])
 503 GCC_CHECK_MATH_FUNC([erff])
 504 GCC_CHECK_MATH_FUNC([erf])
 505 GCC_CHECK_MATH_FUNC([erfcf])
 506 GCC_CHECK_MATH_FUNC([erfc])
 507 GCC_CHECK_MATH_FUNC([erfcl])
 508 GCC_CHECK_MATH_FUNC([j0f])
 509 GCC_CHECK_MATH_FUNC([j0])
 510 GCC_CHECK_MATH_FUNC([j1f])
 511 GCC_CHECK_MATH_FUNC([j1])
 512 GCC_CHECK_MATH_FUNC([jnf])
 513 GCC_CHECK_MATH_FUNC([jn])
 514 GCC_CHECK_MATH_FUNC([jnl])
 515 GCC_CHECK_MATH_FUNC([y0f])
 516 GCC_CHECK_MATH_FUNC([y0])
 517 GCC_CHECK_MATH_FUNC([y1f])
 518 GCC_CHECK_MATH_FUNC([y1])
 519 GCC_CHECK_MATH_FUNC([ynf])
 520 GCC_CHECK_MATH_FUNC([yn])
 521 GCC_CHECK_MATH_FUNC([ynl])
 522 GCC_CHECK_MATH_FUNC([tgamma])
 523 GCC_CHECK_MATH_FUNC([tgammaf])
 524 GCC_CHECK_MATH_FUNC([lgamma])
 525 GCC_CHECK_MATH_FUNC([lgammaf])
 526
 527 # Check for GFORTRAN_C99_1.1 funcs
 528 GCC_CHECK_MATH_FUNC([cacos])
 529 GCC_CHECK_MATH_FUNC([cacosf])
 530 GCC_CHECK_MATH_FUNC([cacosh])
 531 GCC_CHECK_MATH_FUNC([cacoshf])
 532 GCC_CHECK_MATH_FUNC([cacoshl])
 533 GCC_CHECK_MATH_FUNC([cacosl])
 534 GCC_CHECK_MATH_FUNC([casin])
 535 GCC_CHECK_MATH_FUNC([casinf])
 536 GCC_CHECK_MATH_FUNC([casinh])
 537 GCC_CHECK_MATH_FUNC([casinhf])
 538 GCC_CHECK_MATH_FUNC([casinhl])
 539 GCC_CHECK_MATH_FUNC([casinl])
 540 GCC_CHECK_MATH_FUNC([catan])
 541 GCC_CHECK_MATH_FUNC([catanf])
 542 GCC_CHECK_MATH_FUNC([catanh])
 543 GCC_CHECK_MATH_FUNC([catanhf])
 544 GCC_CHECK_MATH_FUNC([catanhl])
 545 GCC_CHECK_MATH_FUNC([catanl])
 546
 547 # For POWER, check the ieee128 math functions
 548
 549 if test "x$have_real_17" = "xyes"; then
 550 AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_REAL_17),[1],
 551   [Define to 1 if you have REAL(KIND=17)])
 552
 553 LIBGFOR_CHECK_MATH_IEEE128([__acoshieee128])
 554 LIBGFOR_CHECK_MATH_IEEE128([__acosieee128])
 555 LIBGFOR_CHECK_MATH_IEEE128([__asinhieee128])
 556 LIBGFOR_CHECK_MATH_IEEE128([__asinieee128])
 557 LIBGFOR_CHECK_MATH_IEEE128([__atan2ieee128])
 558 LIBGFOR_CHECK_MATH_IEEE128([__atanhieee128])
 559 LIBGFOR_CHECK_MATH_IEEE128([__atanieee128])
 560 LIBGFOR_CHECK_MATH_IEEE128([__coshieee128])
 561 LIBGFOR_CHECK_MATH_IEEE128([__cosieee128])
 562 LIBGFOR_CHECK_MATH_IEEE128([__erfieee128])
 563 LIBGFOR_CHECK_MATH_IEEE128([__expieee128])
 564 LIBGFOR_CHECK_MATH_IEEE128([__fabsieee128])
 565 LIBGFOR_CHECK_MATH_IEEE128([__jnieee128])
 566 LIBGFOR_CHECK_MATH_IEEE128([__log10ieee128])
 567 LIBGFOR_CHECK_MATH_IEEE128([__logieee128])
 568 LIBGFOR_CHECK_MATH_IEEE128([__powieee128])
 569 LIBGFOR_CHECK_MATH_IEEE128([__sinhieee128])
 570 LIBGFOR_CHECK_MATH_IEEE128([__sinieee128])
 571 LIBGFOR_CHECK_MATH_IEEE128([__sqrtieee128])
 572 LIBGFOR_CHECK_MATH_IEEE128([__tanhieee128])
 573 LIBGFOR_CHECK_MATH_IEEE128([__tanieee128])
 574 LIBGFOR_CHECK_MATH_IEEE128([__ynieee128])
 575 fi
 576
 577 # On AIX, clog is present in libm as __clog
 578 AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
 579
 580 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysign], [double])
 581 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysignl], [long double])
 582 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabs], [double])
 583 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabsl], [long double])
 584
 585 # Check whether the system has a working stat()
 586 LIBGFOR_CHECK_WORKING_STAT
 587
 588 # Check whether __mingw_snprintf() is present
 589 LIBGFOR_CHECK_MINGW_SNPRINTF
 590
 591 # Check whether libquadmath should be used
 592 AC_ARG_ENABLE(libquadmath-support,
 593 AS_HELP_STRING([--disable-libquadmath-support],
 594   [disable libquadmath support for Fortran]),
 595 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 596 ENABLE_LIBQUADMATH_SUPPORT=yes)
 597 enable_libquadmath_support=
 598 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 599   enable_libquadmath_support=no
 600 fi
 601
 602 # Check whether we have a __float128 type, depends on enable_libquadmath_support
 603 LIBGFOR_CHECK_FLOAT128
 604
 605 # Check for GNU libc feenableexcept
 606 AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
 607
 608 # At least for glibc, clock_gettime is in librt.  But don't
 609 # pull that in if it still doesn't give us the function we want.  This
 610 # test is copied from libgomp, and modified to not link in -lrt as
 611 # libgfortran calls clock_gettime via a weak reference if it's found
 612 # in librt.
 613 if test "$ac_cv_func_clock_gettime" = no; then
 614   AC_CHECK_LIB(rt, clock_gettime,
 615     [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1,
 616                [Define to 1 if you have the `clock_gettime' function in librt.])])
 617 fi
 618
 619 # Check for SysV fpsetmask
 620 LIBGFOR_CHECK_FPSETMASK
 621 AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[
 622 #ifdef HAVE_IEEEFP_H
 623 #include <ieeefp.h>
 624 #endif
 625 #include <math.h>
 626 ]])
 627 AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[
 628 #ifdef HAVE_IEEEFP_H
 629 #include <ieeefp.h>
 630 #endif
 631 #include <math.h>
 632 ]])
 633
 634 # Check whether we have fpsetsticky or fpresetsticky
 635 AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])])
 636 AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])])
 637
 638 # Check for AIX fp_trap and fp_enable
 639 AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
 640 AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
 641
 642 # Check if _SOFT_FLOAT is defined
 643 AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes])
 644
 645 # Runs configure.host to set up necessary host-dependent shell variables.
 646 # We then display a message about it, and propagate them through the
 647 # build chain.
 648 . ${srcdir}/configure.host
 649 AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
 650 AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}])
 651 FPU_HOST_HEADER=config/${fpu_host}.h
 652 AC_SUBST(FPU_HOST_HEADER)
 653
 654 # Whether we will build the IEEE modules
 655 AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes])
 656 AC_SUBST(IEEE_SUPPORT)
 657
 658 # Some targets require additional compiler options for IEEE compatibility.
 659 IEEE_FLAGS="${ieee_flags}"
 660 AC_SUBST(IEEE_FLAGS)
 661
 662 # Conditionalize the makefile for this target machine.
 663 tmake_file_=
 664 for f in ${tmake_file}
 665 do
 666         if test -f ${srcdir}/config/$f
 667         then
 668                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
 669         fi
 670 done
 671 tmake_file="${tmake_file_}"
 672 AC_SUBST(tmake_file)
 673
 674
 675 # Check for POSIX getpwuid_r
 676 #
 677 # There are two versions of getpwuid_r, the POSIX one with 5
 678 # arguments, and another one with 4 arguments used by at least HP-UX
 679 # 10.2.
 680 if test "$ac_cv_func_getpwuid_r" = "yes"; then
 681    AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [
 682    AC_LINK_IFELSE([AC_LANG_PROGRAM([
 683 #include <stdio.h>
 684 #include <sys/types.h>
 685 #include <pwd.h>], [
 686     getpwuid_r(0, NULL, NULL, 0, NULL);
 687     ])],  [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])])
 688 fi
 689 if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then
 690     AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.])
 691 fi
 692
 693
 694 # Check out attribute support.
 695 LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
 696 LIBGFOR_CHECK_ATTRIBUTE_ALIAS
 697
 698 # Check out atomic builtins support.
 699 LIBGFOR_CHECK_ATOMIC_FETCH_ADD
 700
 701 # Check out #pragma weak.
 702 LIBGFOR_GTHREAD_WEAK
 703
 704 # Check out weakref support.
 705 LIBGFOR_CHECK_WEAKREF
 706
 707 # Various other checks on target
 708 LIBGFOR_CHECK_UNLINK_OPEN_FILE
 709
 710 # Check whether line terminator is LF or CRLF
 711 LIBGFOR_CHECK_CRLF
 712
 713 # Check whether we support AVX extensions
 714 LIBGFOR_CHECK_AVX
 715
 716 # Check whether we support AVX2 extensions
 717 LIBGFOR_CHECK_AVX2
 718
 719 # Check whether we support AVX512f extensions
 720 LIBGFOR_CHECK_AVX512F
 721
 722 # Check for FMA3 extensions
 723 LIBGFOR_CHECK_FMA3
 724
 725 # Check for FMA4 extensions
 726 LIBGFOR_CHECK_FMA4
 727
 728 # Check if AVX128 works
 729 LIBGFOR_CHECK_AVX128
 730
 731 # Determine what GCC version number to use in filesystem paths.
 732 GCC_BASE_VER
 733
 734 AC_CACHE_SAVE
 735
 736 if test ${multilib} = yes; then
 737   multilib_arg="--enable-multilib"
 738 else
 739   multilib_arg=
 740 fi
 741
 742 # Write our Makefile and spec file.
 743 AC_CONFIG_FILES([
 744 Makefile
 745 libgfortran.spec
 746 ])
 747 AC_OUTPUT