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 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
  25 #
  26 # You will slowly go insane if you do not grok the following fact:  when
  27 # building this library, the top-level /target/ becomes the library's /host/.
  28 #
  29 # configure then causes --target to default to --host, exactly like any
  30 # other package using autoconf.  Therefore, 'target' and 'host' will
  31 # always be the same.  This makes sense both for native and cross compilers
  32 # just think about it for a little while.  :-)
  33 #
  34 # Also, if this library is being configured as part of a cross compiler, the
  35 # top-level configure script will pass the "real" host as $with_cross_host.
  36 #
  37 # Do not delete or change the following two lines.  For why, see
  38 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
  39 AC_CANONICAL_SYSTEM
  40 ACX_NONCANONICAL_TARGET
  41
  42 target_alias=${target_alias-$host_alias}
  43 AC_SUBST(target_alias)
  44
  45 # Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
  46 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
  47 #  1.9.6:  minimum required version
  48 #  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
  49 #              of other PACKAGE_* variables will, however, and there's nothing
  50 #              we can do about that; they come from AC_INIT).
  51 #  foreign:  we don't follow the normal rules for GNU packages (no COPYING
  52 #            file in the top srcdir, etc, etc), so stop complaining.
  53 #  no-dist:  we don't want 'dist' and related rules.
  54 #  -Wall:  turns on all automake warnings...
  55 #  -Wno-portability:  ...except this one, since GNU make is required.
  56 AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability])
  57
  58 AM_MAINTAINER_MODE
  59 AM_ENABLE_MULTILIB(, ..)
  60
  61 # Handy for debugging:
  62 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
  63
  64 # Are we being configured with some form of cross compiler?
  65 # NB: We don't actually need to know this just now, but when, say, a test
  66 #     suite is included, we'll have to know.
  67 if test "$build" != "$host"; then
  68   LIBGFOR_IS_NATIVE=false
  69   GCC_NO_EXECUTABLES
  70 else
  71   LIBGFOR_IS_NATIVE=true
  72 fi
  73
  74 AC_USE_SYSTEM_EXTENSIONS
  75
  76 GCC_WITH_TOOLEXECLIBDIR
  77
  78 # Calculate toolexeclibdir
  79 # Also toolexecdir, though it's only used in toolexeclibdir
  80 case ${version_specific_libs} in
  81   yes)
  82     # Need the gcc compiler version to know where to install libraries
  83     # and header files if --enable-version-specific-runtime-libs option
  84     # is selected.
  85     toolexecdir='$(libdir)/gcc/$(target_alias)'
  86     toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
  87     ;;
  88   no)
  89     if test -n "$with_cross_host" &&
  90        test x"$with_cross_host" != x"no"; then
  91       # Install a library built with a cross compiler in tooldir, not libdir.
  92       toolexecdir='$(exec_prefix)/$(target_alias)'
  93       case ${with_toolexeclibdir} in
  94         no)
  95           toolexeclibdir='$(toolexecdir)/lib'
  96           ;;
  97         *)
  98           toolexeclibdir=${with_toolexeclibdir}
  99           ;;
 100       esac
 101     else
 102       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
 103       toolexeclibdir='$(libdir)'
 104     fi
 105     multi_os_directory=`$CC -print-multi-os-directory`
 106     case $multi_os_directory in
 107       .) ;; # Avoid trailing /.
 108       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
 109     esac
 110     ;;
 111 esac
 112 AC_SUBST(toolexecdir)
 113 AC_SUBST(toolexeclibdir)
 114
 115 # Create a spec file, so that compile/link tests don't fail
 116 test -f libgfortran.spec || touch libgfortran.spec
 117
 118 AC_LANG_C
 119 # Check the compiler.
 120 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
 121 # We must force CC to /not/ be precious variables; otherwise
 122 # the wrong, non-multilib-adjusted value will be used in multilibs.
 123 # As a side effect, we have to subst CFLAGS ourselves.
 124
 125 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 126 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 127 AC_PROG_CC
 128 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 129
 130 AC_SUBST(CFLAGS)
 131
 132 AM_PROG_CC_C_O
 133
 134 # Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
 135 have_real_17=no
 136 if test "x$GCC" = "xyes"; then
 137   AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
 138   ## We like to use C11 and C99 routines when available.  This makes
 139   ## sure that
 140   ## __STDC_VERSION__ is set such that libc includes make them available.
 141   AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla"
 142   ## Compile the following tests with the same system header contents
 143   ## that we'll encounter when compiling our own source files.
 144   CFLAGS="-std=gnu11 $CFLAGS"
 145
 146   case x$target in
 147     xpowerpc64le*-linux*)
 148       AC_PREPROC_IFELSE(
 149         [AC_LANG_PROGRAM([[#if __SIZEOF_LONG_DOUBLE__ != 16
 150                            #error long double is double
 151                            #endif]],
 152                          [[(void) 0;]])],
 153         [AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 154          AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 155          CFLAGS="$CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 156          have_real_17=yes])
 157       ;;
 158     *)
 159       ;;
 160   esac
 161 fi
 162 AM_CONDITIONAL([HAVE_REAL_17], [test "x$have_real_17" != xno])
 163
 164 # Add CET specific flags if CET is enabled
 165 GCC_CET_FLAGS(CET_FLAGS)
 166 AM_FCFLAGS="$AM_FCFLAGS $CET_FLAGS"
 167 AM_CFLAGS="$AM_CFLAGS $CET_FLAGS"
 168 CFLAGS="$CFLAGS $CET_FLAGS"
 169
 170 AC_SUBST(AM_FCFLAGS)
 171 AC_SUBST(AM_CFLAGS)
 172 AC_SUBST(CFLAGS)
 173
 174 # Check for symbol versioning (copied from libssp).
 175 AC_MSG_CHECKING([whether symbol versioning is supported])
 176 AC_ARG_ENABLE(symvers,
 177 AS_HELP_STRING([--disable-symvers],
 178   [disable symbol versioning for libgfortran]),
 179 gfortran_use_symver=$enableval,
 180 gfortran_use_symver=yes)
 181 if test "x$gfortran_use_symver" != xno; then
 182   save_LDFLAGS="$LDFLAGS"
 183   LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
 184   cat > conftest.map <<EOF
 185 FOO_1.0 {
 186   global: *foo*; bar; local: *;
 187 };
 188 EOF
 189   AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
 190   if test x$gfortran_use_symver = xno; then
 191     case "$target_os" in
 192       solaris2*)
 193         LDFLAGS="$save_LDFLAGS"
 194         LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
 195         # Sun ld cannot handle wildcards and treats all entries as undefined.
 196         cat > conftest.map <<EOF
 197 FOO_1.0 {
 198   global: foo; local: *;
 199 };
 200 EOF
 201         AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no])
 202         ;;
 203     esac
 204   fi
 205   LDFLAGS="$save_LDFLAGS"
 206 fi
 207 AC_MSG_RESULT($gfortran_use_symver)
 208 AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
 209 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
 210 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun])
 211
 212 # For GPU offloading, not everything in libfortran can be supported.
 213 # Currently, the only target that has this problem is nvptx.  The
 214 # following is a (partial) list of features that are unsupportable on
 215 # this particular target:
 216 # * Constructors
 217 # * alloca
 218 # * C library support for I/O, with printf as the one notable exception
 219 # * C library support for other features such as signal, environment
 220 #   variables, time functions
 221
 222 AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx])
 223
 224 # Some compiler target support may have limited support for integer
 225 # or floating point numbers – or may want to reduce the libgfortran size
 226 # although they do have the support.
 227 LIBGOMP_CHECKED_INT_KINDS="1 2 4 8 16"
 228 LIBGOMP_CHECKED_REAL_KINDS="4 8 10 16"
 229
 230 AC_SUBST(LIBGOMP_CHECKED_INT_KINDS)
 231 AC_SUBST(LIBGOMP_CHECKED_REAL_KINDS)
 232
 233 # Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
 234 # similarly to how libstdc++ does it
 235 ac_test_CFLAGS="${CFLAGS+set}"
 236 ac_save_CFLAGS="$CFLAGS"
 237
 238 # Check for -ffunction-sections -fdata-sections
 239 AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
 240 CFLAGS='-Werror -ffunction-sections -fdata-sections'
 241 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no])
 242 if test "$ac_test_CFLAGS" = set; then
 243   CFLAGS="$ac_save_CFLAGS"
 244 else
 245   # this is the suspicious part
 246   CFLAGS=""
 247 fi
 248 if test x"$ac_fdsections" = x"yes"; then
 249   SECTION_FLAGS='-ffunction-sections -fdata-sections'
 250 fi
 251 AC_MSG_RESULT($ac_fdsections)
 252 AC_SUBST(SECTION_FLAGS)
 253
 254 # Check linker hardware capability support.
 255 GCC_CHECK_LINKER_HWCAP
 256
 257 # Find other programs we need.
 258 AC_CHECK_TOOL(AS, as)
 259 AC_CHECK_TOOL(AR, ar)
 260 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 261 AC_PROG_MAKE_SET
 262 AC_PROG_INSTALL
 263
 264 # Configure libtool
 265 #AC_MSG_NOTICE([====== Starting libtool configuration])
 266 AC_LIBTOOL_DLOPEN
 267 AM_PROG_LIBTOOL
 268 LT_LIB_M
 269 ACX_LT_HOST_FLAGS
 270 AC_SUBST(enable_shared)
 271 AC_SUBST(enable_static)
 272 AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
 273 #AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
 274
 275 # We need gfortran to compile parts of the library
 276 #AC_PROG_FC(gfortran)
 277 FC="$GFORTRAN"
 278 AC_PROG_FC(gfortran)
 279
 280 # extra LD Flags which are required for targets
 281 extra_ldflags_libgfortran=
 282 case "${host}" in
 283   *-*-darwin[[4567]]*)
 284     # Earlier Darwin needs -single_module when linking libgfortran
 285     extra_ldflags_libgfortran=-Wl,-single_module
 286     ;;
 287 esac
 288 AC_SUBST(extra_ldflags_libgfortran)
 289
 290 # We need a working compiler at that point, otherwise give a clear
 291 # error message and bail out.
 292 LIBGFOR_WORKING_GFORTRAN
 293
 294 AC_SYS_LARGEFILE
 295
 296 # Types
 297 AC_TYPE_OFF_T
 298 AC_TYPE_INTPTR_T
 299 AC_TYPE_UINTPTR_T
 300 AC_CHECK_TYPES([ptrdiff_t])
 301
 302 # check header files (we assume C89 is available, so don't check for that)
 303 AC_CHECK_HEADERS_ONCE(unistd.h sys/random.h sys/time.h sys/times.h \
 304 sys/resource.h sys/types.h sys/stat.h sys/uio.h sys/wait.h \
 305 floatingpoint.h ieeefp.h fenv.h fptrap.h \
 306 fpxcp.h pwd.h complex.h xlocale.h)
 307
 308 GCC_HEADER_STDINT(gstdint.h)
 309
 310 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
 311
 312 case "${host}--x${with_newlib}" in
 313   mips*--xyes)
 314     hardwire_newlib=1;;
 315   nvptx*--xyes)
 316     hardwire_newlib=1;;
 317 esac
 318
 319 # Check for library functions.
 320 if test "${hardwire_newlib:-0}" -eq 1; then
 321    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
 322    # may not work correctly, because the compiler may not be able to
 323    # link executables.
 324    AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.])
 325    AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.])
 326    AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.])
 327    AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.])
 328    AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.])
 329    AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.])
 330    AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.])
 331    AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.])
 332
 333    # At some point, we should differentiate between architectures
 334    # like x86, which have long double versions, and alpha/powerpc/etc.,
 335    # which don't. For the time being, punt.
 336    if test x"long_double_math_on_this_cpu" = x"yes"; then
 337      AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.])
 338    fi
 339 else
 340    AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
 341    ftruncate chsize chdir getentropy getlogin gethostname kill link symlink \
 342    sleep ttyname sigaction waitpid \
 343    alarm access fork posix_spawn setmode fcntl writev \
 344    gettimeofday stat fstat lstat getpwuid vsnprintf dup \
 345    getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \
 346    getgid getpid getuid geteuid umask getegid \
 347    secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \
 348    freelocale uselocale strerror_l strtof128 strfromf128)
 349 fi
 350
 351 # Check strerror_r, cannot be above as versions with two and three arguments exist
 352 LIBGFOR_CHECK_STRERROR_R
 353
 354 # Check for C99 (and other IEEE) math functions
 355 GCC_CHECK_MATH_FUNC([acosf])
 356 GCC_CHECK_MATH_FUNC([acos])
 357 GCC_CHECK_MATH_FUNC([acosl])
 358 GCC_CHECK_MATH_FUNC([acoshf])
 359 GCC_CHECK_MATH_FUNC([acosh])
 360 GCC_CHECK_MATH_FUNC([acoshl])
 361 GCC_CHECK_MATH_FUNC([asinf])
 362 GCC_CHECK_MATH_FUNC([asin])
 363 GCC_CHECK_MATH_FUNC([asinl])
 364 GCC_CHECK_MATH_FUNC([asinhf])
 365 GCC_CHECK_MATH_FUNC([asinh])
 366 GCC_CHECK_MATH_FUNC([asinhl])
 367 GCC_CHECK_MATH_FUNC([atan2f])
 368 GCC_CHECK_MATH_FUNC([atan2])
 369 GCC_CHECK_MATH_FUNC([atan2l])
 370 GCC_CHECK_MATH_FUNC([atanf])
 371 GCC_CHECK_MATH_FUNC([atan])
 372 GCC_CHECK_MATH_FUNC([atanl])
 373 GCC_CHECK_MATH_FUNC([atanhf])
 374 GCC_CHECK_MATH_FUNC([atanh])
 375 GCC_CHECK_MATH_FUNC([atanhl])
 376 GCC_CHECK_MATH_FUNC([cargf])
 377 GCC_CHECK_MATH_FUNC([carg])
 378 GCC_CHECK_MATH_FUNC([cargl])
 379 GCC_CHECK_MATH_FUNC([ceilf])
 380 GCC_CHECK_MATH_FUNC([ceil])
 381 GCC_CHECK_MATH_FUNC([ceill])
 382 GCC_CHECK_MATH_FUNC([copysignf])
 383 GCC_CHECK_MATH_FUNC([copysign])
 384 GCC_CHECK_MATH_FUNC([copysignl])
 385 GCC_CHECK_MATH_FUNC([cosf])
 386 GCC_CHECK_MATH_FUNC([cos])
 387 GCC_CHECK_MATH_FUNC([cosl])
 388 GCC_CHECK_MATH_FUNC([ccosf])
 389 GCC_CHECK_MATH_FUNC([ccos])
 390 GCC_CHECK_MATH_FUNC([ccosl])
 391 GCC_CHECK_MATH_FUNC([coshf])
 392 GCC_CHECK_MATH_FUNC([cosh])
 393 GCC_CHECK_MATH_FUNC([coshl])
 394 GCC_CHECK_MATH_FUNC([ccoshf])
 395 GCC_CHECK_MATH_FUNC([ccosh])
 396 GCC_CHECK_MATH_FUNC([ccoshl])
 397 GCC_CHECK_MATH_FUNC([expf])
 398 GCC_CHECK_MATH_FUNC([exp])
 399 GCC_CHECK_MATH_FUNC([expl])
 400 GCC_CHECK_MATH_FUNC([cexpf])
 401 GCC_CHECK_MATH_FUNC([cexp])
 402 GCC_CHECK_MATH_FUNC([cexpl])
 403 GCC_CHECK_MATH_FUNC([fabsf])
 404 GCC_CHECK_MATH_FUNC([fabs])
 405 GCC_CHECK_MATH_FUNC([fabsl])
 406 GCC_CHECK_MATH_FUNC([cabsf])
 407 GCC_CHECK_MATH_FUNC([cabs])
 408 GCC_CHECK_MATH_FUNC([cabsl])
 409 GCC_CHECK_MATH_FUNC([floorf])
 410 GCC_CHECK_MATH_FUNC([floor])
 411 GCC_CHECK_MATH_FUNC([floorl])
 412 GCC_CHECK_MATH_FUNC([fmaf])
 413 GCC_CHECK_MATH_FUNC([fma])
 414 GCC_CHECK_MATH_FUNC([fmal])
 415 GCC_CHECK_MATH_FUNC([fmodf])
 416 GCC_CHECK_MATH_FUNC([fmod])
 417 GCC_CHECK_MATH_FUNC([fmodl])
 418 GCC_CHECK_MATH_FUNC([frexpf])
 419 GCC_CHECK_MATH_FUNC([frexp])
 420 GCC_CHECK_MATH_FUNC([frexpl])
 421 GCC_CHECK_MATH_FUNC([hypotf])
 422 GCC_CHECK_MATH_FUNC([hypot])
 423 GCC_CHECK_MATH_FUNC([hypotl])
 424 GCC_CHECK_MATH_FUNC([ldexpf])
 425 GCC_CHECK_MATH_FUNC([ldexp])
 426 GCC_CHECK_MATH_FUNC([ldexpl])
 427 GCC_CHECK_MATH_FUNC([logf])
 428 GCC_CHECK_MATH_FUNC([log])
 429 GCC_CHECK_MATH_FUNC([logl])
 430 GCC_CHECK_MATH_FUNC([clogf])
 431 GCC_CHECK_MATH_FUNC([clog])
 432 GCC_CHECK_MATH_FUNC([clogl])
 433 GCC_CHECK_MATH_FUNC([log10f])
 434 GCC_CHECK_MATH_FUNC([log10])
 435 GCC_CHECK_MATH_FUNC([log10l])
 436 GCC_CHECK_MATH_FUNC([clog10f])
 437 GCC_CHECK_MATH_FUNC([clog10])
 438 GCC_CHECK_MATH_FUNC([clog10l])
 439 GCC_CHECK_MATH_FUNC([nextafterf])
 440 GCC_CHECK_MATH_FUNC([nextafter])
 441 GCC_CHECK_MATH_FUNC([nextafterl])
 442 GCC_CHECK_MATH_FUNC([powf])
 443 GCC_CHECK_MATH_FUNC([pow])
 444 GCC_CHECK_MATH_FUNC([cpowf])
 445 GCC_CHECK_MATH_FUNC([cpow])
 446 GCC_CHECK_MATH_FUNC([cpowl])
 447 GCC_CHECK_MATH_FUNC([roundf])
 448 GCC_CHECK_MATH_FUNC([round])
 449 GCC_CHECK_MATH_FUNC([roundl])
 450 GCC_CHECK_MATH_FUNC([lroundf])
 451 GCC_CHECK_MATH_FUNC([lround])
 452 GCC_CHECK_MATH_FUNC([lroundl])
 453 GCC_CHECK_MATH_FUNC([llroundf])
 454 GCC_CHECK_MATH_FUNC([llround])
 455 GCC_CHECK_MATH_FUNC([llroundl])
 456 GCC_CHECK_MATH_FUNC([scalbnf])
 457 GCC_CHECK_MATH_FUNC([scalbn])
 458 GCC_CHECK_MATH_FUNC([scalbnl])
 459 GCC_CHECK_MATH_FUNC([sinf])
 460 GCC_CHECK_MATH_FUNC([sin])
 461 GCC_CHECK_MATH_FUNC([sinl])
 462 GCC_CHECK_MATH_FUNC([csinf])
 463 GCC_CHECK_MATH_FUNC([csin])
 464 GCC_CHECK_MATH_FUNC([csinl])
 465 GCC_CHECK_MATH_FUNC([sinhf])
 466 GCC_CHECK_MATH_FUNC([sinh])
 467 GCC_CHECK_MATH_FUNC([sinhl])
 468 GCC_CHECK_MATH_FUNC([csinhf])
 469 GCC_CHECK_MATH_FUNC([csinh])
 470 GCC_CHECK_MATH_FUNC([csinhl])
 471 GCC_CHECK_MATH_FUNC([sqrtf])
 472 GCC_CHECK_MATH_FUNC([sqrt])
 473 GCC_CHECK_MATH_FUNC([sqrtl])
 474 GCC_CHECK_MATH_FUNC([csqrtf])
 475 GCC_CHECK_MATH_FUNC([csqrt])
 476 GCC_CHECK_MATH_FUNC([csqrtl])
 477 GCC_CHECK_MATH_FUNC([tanf])
 478 GCC_CHECK_MATH_FUNC([tan])
 479 GCC_CHECK_MATH_FUNC([tanl])
 480 GCC_CHECK_MATH_FUNC([ctanf])
 481 GCC_CHECK_MATH_FUNC([ctan])
 482 GCC_CHECK_MATH_FUNC([ctanl])
 483 GCC_CHECK_MATH_FUNC([tanhf])
 484 GCC_CHECK_MATH_FUNC([tanh])
 485 GCC_CHECK_MATH_FUNC([tanhl])
 486 GCC_CHECK_MATH_FUNC([ctanhf])
 487 GCC_CHECK_MATH_FUNC([ctanh])
 488 GCC_CHECK_MATH_FUNC([ctanhl])
 489 GCC_CHECK_MATH_FUNC([truncf])
 490 GCC_CHECK_MATH_FUNC([trunc])
 491 GCC_CHECK_MATH_FUNC([truncl])
 492 GCC_CHECK_MATH_FUNC([erff])
 493 GCC_CHECK_MATH_FUNC([erf])
 494 GCC_CHECK_MATH_FUNC([erfcf])
 495 GCC_CHECK_MATH_FUNC([erfc])
 496 GCC_CHECK_MATH_FUNC([erfcl])
 497 GCC_CHECK_MATH_FUNC([j0f])
 498 GCC_CHECK_MATH_FUNC([j0])
 499 GCC_CHECK_MATH_FUNC([j1f])
 500 GCC_CHECK_MATH_FUNC([j1])
 501 GCC_CHECK_MATH_FUNC([jnf])
 502 GCC_CHECK_MATH_FUNC([jn])
 503 GCC_CHECK_MATH_FUNC([jnl])
 504 GCC_CHECK_MATH_FUNC([y0f])
 505 GCC_CHECK_MATH_FUNC([y0])
 506 GCC_CHECK_MATH_FUNC([y1f])
 507 GCC_CHECK_MATH_FUNC([y1])
 508 GCC_CHECK_MATH_FUNC([ynf])
 509 GCC_CHECK_MATH_FUNC([yn])
 510 GCC_CHECK_MATH_FUNC([ynl])
 511 GCC_CHECK_MATH_FUNC([tgamma])
 512 GCC_CHECK_MATH_FUNC([tgammaf])
 513 GCC_CHECK_MATH_FUNC([lgamma])
 514 GCC_CHECK_MATH_FUNC([lgammaf])
 515
 516 # Check for GFORTRAN_C99_1.1 funcs
 517 GCC_CHECK_MATH_FUNC([cacos])
 518 GCC_CHECK_MATH_FUNC([cacosf])
 519 GCC_CHECK_MATH_FUNC([cacosh])
 520 GCC_CHECK_MATH_FUNC([cacoshf])
 521 GCC_CHECK_MATH_FUNC([cacoshl])
 522 GCC_CHECK_MATH_FUNC([cacosl])
 523 GCC_CHECK_MATH_FUNC([casin])
 524 GCC_CHECK_MATH_FUNC([casinf])
 525 GCC_CHECK_MATH_FUNC([casinh])
 526 GCC_CHECK_MATH_FUNC([casinhf])
 527 GCC_CHECK_MATH_FUNC([casinhl])
 528 GCC_CHECK_MATH_FUNC([casinl])
 529 GCC_CHECK_MATH_FUNC([catan])
 530 GCC_CHECK_MATH_FUNC([catanf])
 531 GCC_CHECK_MATH_FUNC([catanh])
 532 GCC_CHECK_MATH_FUNC([catanhf])
 533 GCC_CHECK_MATH_FUNC([catanhl])
 534 GCC_CHECK_MATH_FUNC([catanl])
 535
 536 # For POWER, check the ieee128 math functions
 537
 538 if test "x$have_real_17" = "xyes"; then
 539 AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_REAL_17),[1],
 540   [Define to 1 if you have REAL(KIND=17)])
 541
 542 LIBGFOR_CHECK_MATH_IEEE128([__acoshieee128])
 543 LIBGFOR_CHECK_MATH_IEEE128([__acosieee128])
 544 LIBGFOR_CHECK_MATH_IEEE128([__asinhieee128])
 545 LIBGFOR_CHECK_MATH_IEEE128([__asinieee128])
 546 LIBGFOR_CHECK_MATH_IEEE128([__atan2ieee128])
 547 LIBGFOR_CHECK_MATH_IEEE128([__atanhieee128])
 548 LIBGFOR_CHECK_MATH_IEEE128([__atanieee128])
 549 LIBGFOR_CHECK_MATH_IEEE128([__coshieee128])
 550 LIBGFOR_CHECK_MATH_IEEE128([__cosieee128])
 551 LIBGFOR_CHECK_MATH_IEEE128([__erfieee128])
 552 LIBGFOR_CHECK_MATH_IEEE128([__expieee128])
 553 LIBGFOR_CHECK_MATH_IEEE128([__fabsieee128])
 554 LIBGFOR_CHECK_MATH_IEEE128([__jnieee128])
 555 LIBGFOR_CHECK_MATH_IEEE128([__log10ieee128])
 556 LIBGFOR_CHECK_MATH_IEEE128([__logieee128])
 557 LIBGFOR_CHECK_MATH_IEEE128([__powieee128])
 558 LIBGFOR_CHECK_MATH_IEEE128([__sinhieee128])
 559 LIBGFOR_CHECK_MATH_IEEE128([__sinieee128])
 560 LIBGFOR_CHECK_MATH_IEEE128([__sqrtieee128])
 561 LIBGFOR_CHECK_MATH_IEEE128([__tanhieee128])
 562 LIBGFOR_CHECK_MATH_IEEE128([__tanieee128])
 563 LIBGFOR_CHECK_MATH_IEEE128([__ynieee128])
 564 fi
 565
 566 # On AIX, clog is present in libm as __clog
 567 AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
 568
 569 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysign], [double])
 570 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2([copysignl], [long double])
 571 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabs], [double])
 572 GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1([fabsl], [long double])
 573
 574 GCC_CHECK_MATH_FUNC([acosf128])
 575 GCC_CHECK_MATH_FUNC([acoshf128])
 576 GCC_CHECK_MATH_FUNC([asinf128])
 577 GCC_CHECK_MATH_FUNC([asinhf128])
 578 GCC_CHECK_MATH_FUNC([atan2f128])
 579 GCC_CHECK_MATH_FUNC([atanf128])
 580 GCC_CHECK_MATH_FUNC([atanhf128])
 581 GCC_CHECK_MATH_FUNC([cargf128])
 582 GCC_CHECK_MATH_FUNC([ceilf128])
 583 GCC_CHECK_MATH_FUNC([copysignf128])
 584 GCC_CHECK_MATH_FUNC([cosf128])
 585 GCC_CHECK_MATH_FUNC([ccosf128])
 586 GCC_CHECK_MATH_FUNC([coshf128])
 587 GCC_CHECK_MATH_FUNC([ccoshf128])
 588 GCC_CHECK_MATH_FUNC([expf128])
 589 GCC_CHECK_MATH_FUNC([cexpf128])
 590 GCC_CHECK_MATH_FUNC([fabsf128])
 591 GCC_CHECK_MATH_FUNC([cabsf128])
 592 GCC_CHECK_MATH_FUNC([floorf128])
 593 GCC_CHECK_MATH_FUNC([fmaf128])
 594 GCC_CHECK_MATH_FUNC([fmodf128])
 595 GCC_CHECK_MATH_FUNC([frexpf128])
 596 GCC_CHECK_MATH_FUNC([hypotf128])
 597 GCC_CHECK_MATH_FUNC([ldexpf128])
 598 GCC_CHECK_MATH_FUNC([logf128])
 599 GCC_CHECK_MATH_FUNC([clogf128])
 600 GCC_CHECK_MATH_FUNC([log10f128])
 601 GCC_CHECK_MATH_FUNC([clog10f128])
 602 GCC_CHECK_MATH_FUNC([nextafterf128])
 603 GCC_CHECK_MATH_FUNC([powf128])
 604 GCC_CHECK_MATH_FUNC([cpowf128])
 605 GCC_CHECK_MATH_FUNC([roundf128])
 606 GCC_CHECK_MATH_FUNC([lroundf128])
 607 GCC_CHECK_MATH_FUNC([llroundf128])
 608 GCC_CHECK_MATH_FUNC([scalbnf128])
 609 GCC_CHECK_MATH_FUNC([sinf128])
 610 GCC_CHECK_MATH_FUNC([csinf128])
 611 GCC_CHECK_MATH_FUNC([sinhf128])
 612 GCC_CHECK_MATH_FUNC([csinhf128])
 613 GCC_CHECK_MATH_FUNC([sqrtf128])
 614 GCC_CHECK_MATH_FUNC([csqrtf128])
 615 GCC_CHECK_MATH_FUNC([tanf128])
 616 GCC_CHECK_MATH_FUNC([ctanf128])
 617 GCC_CHECK_MATH_FUNC([tanhf128])
 618 GCC_CHECK_MATH_FUNC([ctanhf128])
 619 GCC_CHECK_MATH_FUNC([truncf128])
 620 GCC_CHECK_MATH_FUNC([erff128])
 621 GCC_CHECK_MATH_FUNC([erfcf128])
 622 GCC_CHECK_MATH_FUNC([j0f128])
 623 GCC_CHECK_MATH_FUNC([j1f128])
 624 GCC_CHECK_MATH_FUNC([jnf128])
 625 GCC_CHECK_MATH_FUNC([y0f128])
 626 GCC_CHECK_MATH_FUNC([y1f128])
 627 GCC_CHECK_MATH_FUNC([ynf128])
 628 GCC_CHECK_MATH_FUNC([tgammaf128])
 629 GCC_CHECK_MATH_FUNC([lgammaf128])
 630
 631 GCC_CHECK_MATH_FUNC([cacosf128])
 632 GCC_CHECK_MATH_FUNC([cacoshf128])
 633 GCC_CHECK_MATH_FUNC([casinf128])
 634 GCC_CHECK_MATH_FUNC([casinhf128])
 635 GCC_CHECK_MATH_FUNC([catanf128])
 636 GCC_CHECK_MATH_FUNC([catanhf128])
 637
 638 # Check whether the system has a working stat()
 639 LIBGFOR_CHECK_WORKING_STAT
 640
 641 # Check whether __mingw_snprintf() is present
 642 LIBGFOR_CHECK_MINGW_SNPRINTF
 643
 644 have_iec_60559_libc_support=no
 645 if test "x$ac_cv_func_strtof128$ac_cv_func_strfromf128" = xyesyes \
 646    && test "x$gcc_cv_math_func_sinf128$gcc_cv_math_func_cacosf128" = xyesyes; then
 647   have_iec_60559_libc_support=yes
 648 fi
 649
 650 # Check whether libquadmath should be used
 651 AC_ARG_ENABLE(libquadmath-support,
 652 AS_HELP_STRING([--disable-libquadmath-support],
 653   [disable libquadmath support for Fortran]),
 654 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 655 if test "x$have_iec_60559_libc_support" = xyes; then
 656   ENABLE_LIBQUADMATH_SUPPORT=default
 657 else
 658   ENABLE_LIBQUADMATH_SUPPORT=yes
 659 fi)
 660 enable_libquadmath_support=
 661 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 662   enable_libquadmath_support=no
 663 elif test "${ENABLE_LIBQUADMATH_SUPPORT}" = "default" ; then
 664   enable_libquadmath_support=default
 665 fi
 666
 667 # Check whether we have a _Float128 type, depends on enable_libquadmath_support
 668 # and have_iec_60559_libc_support.
 669 LIBGFOR_CHECK_FLOAT128
 670
 671 # Check for GNU libc feenableexcept
 672 AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
 673
 674 # At least for glibc, clock_gettime is in librt.  But don't
 675 # pull that in if it still doesn't give us the function we want.  This
 676 # test is copied from libgomp, and modified to not link in -lrt as
 677 # libgfortran calls clock_gettime via a weak reference if it's found
 678 # in librt.
 679 if test "$ac_cv_func_clock_gettime" = no; then
 680   AC_CHECK_LIB(rt, clock_gettime,
 681     [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1,
 682                [Define to 1 if you have the `clock_gettime' function in librt.])])
 683 fi
 684
 685 # Check for SysV fpsetmask
 686 LIBGFOR_CHECK_FPSETMASK
 687 AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[
 688 #ifdef HAVE_IEEEFP_H
 689 #include <ieeefp.h>
 690 #endif
 691 #include <math.h>
 692 ]])
 693 AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[
 694 #ifdef HAVE_IEEEFP_H
 695 #include <ieeefp.h>
 696 #endif
 697 #include <math.h>
 698 ]])
 699
 700 # Check whether we have fpsetsticky or fpresetsticky
 701 AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])])
 702 AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])])
 703
 704 # Check for AIX fp_trap and fp_enable
 705 AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
 706 AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
 707
 708 # Check if _SOFT_FLOAT is defined
 709 AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes])
 710
 711 # Runs configure.host to set up necessary host-dependent shell variables.
 712 # We then display a message about it, and propagate them through the
 713 # build chain.
 714 . ${srcdir}/configure.host
 715 AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
 716 AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}])
 717 FPU_HOST_HEADER=config/${fpu_host}.h
 718 AC_SUBST(FPU_HOST_HEADER)
 719
 720 # Whether we will build the IEEE modules
 721 AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes])
 722 AC_SUBST(IEEE_SUPPORT)
 723
 724 # Some targets require additional compiler options for IEEE compatibility.
 725 IEEE_FLAGS="${ieee_flags}"
 726 AC_SUBST(IEEE_FLAGS)
 727
 728 # Conditionalize the makefile for this target machine.
 729 tmake_file_=
 730 for f in ${tmake_file}
 731 do
 732         if test -f ${srcdir}/config/$f
 733         then
 734                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
 735         fi
 736 done
 737 tmake_file="${tmake_file_}"
 738 AC_SUBST(tmake_file)
 739
 740
 741 # Check for POSIX getpwuid_r
 742 #
 743 # There are two versions of getpwuid_r, the POSIX one with 5
 744 # arguments, and another one with 4 arguments used by at least HP-UX
 745 # 10.2.
 746 if test "$ac_cv_func_getpwuid_r" = "yes"; then
 747    AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [
 748    AC_LINK_IFELSE([AC_LANG_PROGRAM([
 749 #include <stdio.h>
 750 #include <sys/types.h>
 751 #include <pwd.h>], [
 752     getpwuid_r(0, NULL, NULL, 0, NULL);
 753     ])],  [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])])
 754 fi
 755 if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then
 756     AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.])
 757 fi
 758
 759
 760 # Check out attribute support.
 761 LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
 762 LIBGFOR_CHECK_ATTRIBUTE_ALIAS
 763
 764 # Check out atomic builtins support.
 765 LIBGFOR_CHECK_ATOMIC_FETCH_ADD
 766
 767 # Check out #pragma weak.
 768 LIBGFOR_GTHREAD_WEAK
 769
 770 # Check out weakref support.
 771 LIBGFOR_CHECK_WEAKREF
 772
 773 # Various other checks on target
 774 LIBGFOR_CHECK_UNLINK_OPEN_FILE
 775
 776 # Check whether line terminator is LF or CRLF
 777 LIBGFOR_CHECK_CRLF
 778
 779 # Check whether we support AVX extensions
 780 LIBGFOR_CHECK_AVX
 781
 782 # Check whether we support AVX2 extensions
 783 LIBGFOR_CHECK_AVX2
 784
 785 # Check whether we support AVX512f extensions
 786 LIBGFOR_CHECK_AVX512F
 787
 788 # Check for FMA3 extensions
 789 LIBGFOR_CHECK_FMA3
 790
 791 # Check for FMA4 extensions
 792 LIBGFOR_CHECK_FMA4
 793
 794 # Check if AVX128 works
 795 LIBGFOR_CHECK_AVX128
 796
 797 # Determine what GCC version number to use in filesystem paths.
 798 GCC_BASE_VER
 799
 800 AC_CACHE_SAVE
 801
 802 if test ${multilib} = yes; then
 803   multilib_arg="--enable-multilib"
 804 else
 805   multilib_arg=
 806 fi
 807
 808 # Write our Makefile and spec file.
 809 AC_CONFIG_FILES([
 810 Makefile
 811 libgfortran.spec
 812 ])
 813 AC_OUTPUT