libgfortran/configure.ac

   1 # Process this file with autoconf to produce a configure script, like so:
   2 # aclocal && autoconf && autoheader && automake
   3
   4 AC_PREREQ(2.64)
   5 AC_INIT([GNU Fortran Runtime Library], 0.3,,[libgfortran])
   6 AC_CONFIG_HEADER(config.h)
   7 GCC_TOPLEV_SUBDIRS
   8
   9 # -------
  10 # Options
  11 # -------
  12
  13 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
  14 AC_ARG_ENABLE(version-specific-runtime-libs,
  15 AS_HELP_STRING([--enable-version-specific-runtime-libs],
  16   [specify that runtime libraries should be installed in a compiler-specific directory]),
  17 [case "$enableval" in
  18  yes) version_specific_libs=yes ;;
  19  no)  version_specific_libs=no ;;
  20  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
  21  esac],
  22 [version_specific_libs=no])
  23 AC_MSG_RESULT($version_specific_libs)
  24
  25 # Build with intermodule optimisations
  26 AC_MSG_CHECKING([for --enable-intermodule])
  27 AC_ARG_ENABLE(intermodule,
  28 AS_HELP_STRING([--enable-intermodule],[build the library in one step]),
  29 [case "$enable_intermodule" in
  30   yes) onestep="-onestep";;
  31     *) onestep="";;
  32 esac],
  33 [onestep=""])
  34 AC_MSG_RESULT($enable_intermodule)
  35 AM_CONDITIONAL(onestep,[test x$onestep = x-onestep])
  36 AC_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 $with_cross_host.
  50 #
  51 # Do not delete or change the following two lines.  For why, see
  52 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
  53 AC_CANONICAL_SYSTEM
  54 ACX_NONCANONICAL_TARGET
  55
  56 target_alias=${target_alias-$host_alias}
  57 AC_SUBST(target_alias)
  58
  59 # Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
  60 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
  61 #  1.9.6:  minimum required version
  62 #  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
  63 #              of other PACKAGE_* variables will, however, and there's nothing
  64 #              we can do about that; they come from AC_INIT).
  65 #  foreign:  we don't follow the normal rules for GNU packages (no COPYING
  66 #            file in the top srcdir, etc, etc), so stop complaining.
  67 #  no-dist:  we don't want 'dist' and related rules.
  68 #  -Wall:  turns on all automake warnings...
  69 #  -Wno-portability:  ...except this one, since GNU make is required.
  70 AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability])
  71
  72 AM_MAINTAINER_MODE
  73 AM_ENABLE_MULTILIB(, ..)
  74
  75 # Handy for debugging:
  76 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
  77
  78 # Are we being configured with some form of cross compiler?
  79 # NB: We don't actually need to know this just now, but when, say, a test
  80 #     suite is included, we'll have to know.
  81 if test "$build" != "$host"; then
  82   LIBGFOR_IS_NATIVE=false
  83   GCC_NO_EXECUTABLES
  84 else
  85   LIBGFOR_IS_NATIVE=true
  86 fi
  87
  88 AC_USE_SYSTEM_EXTENSIONS
  89
  90 # Calculate toolexeclibdir
  91 # Also toolexecdir, though it's only used in toolexeclibdir
  92 case ${version_specific_libs} in
  93   yes)
  94     # Need the gcc compiler version to know where to install libraries
  95     # and header files if --enable-version-specific-runtime-libs option
  96     # is selected.
  97     toolexecdir='$(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/$multi_os_directory ;;
 114     esac
 115     ;;
 116 esac
 117 AC_SUBST(toolexecdir)
 118 AC_SUBST(toolexeclibdir)
 119
 120 # Create a spec file, so that compile/link tests don't fail
 121 test -f libgfortran.spec || touch libgfortran.spec
 122
 123 AC_LANG_C
 124 # Check the compiler.
 125 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
 126 # We must force CC to /not/ be precious variables; otherwise
 127 # the wrong, non-multilib-adjusted value will be used in multilibs.
 128 # As a side effect, we have to subst CFLAGS ourselves.
 129
 130 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 131 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 132 AC_PROG_CC
 133 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 134
 135 AC_SUBST(CFLAGS)
 136
 137 AM_PROG_CC_C_O
 138
 139 # Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
 140 if test "x$GCC" = "xyes"; then
 141   AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
 142   ## We like to use C99 routines when available.  This makes sure that
 143   ## __STDC_VERSION__ is set such that libc includes make them available.
 144   AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
 145   ## Compile the following tests with the same system header contents
 146   ## that we'll encounter when compiling our own source files.
 147   CFLAGS="-std=gnu99 $CFLAGS"
 148 fi
 149 AC_SUBST(AM_FCFLAGS)
 150 AC_SUBST(AM_CFLAGS)
 151 AC_SUBST(CFLAGS)
 152
 153 # Check for symbol versioning (copied from libssp).
 154 AC_MSG_CHECKING([whether symbol versioning is supported])
 155 AC_ARG_ENABLE(symvers,
 156 AS_HELP_STRING([--disable-symvers],
 157   [disable symbol versioning for libgfortran]),
 158 gfortran_use_symver=$enableval,
 159 gfortran_use_symver=yes)
 160 if test "x$gfortran_use_symver" = xyes; then
 161   save_LDFLAGS="$LDFLAGS"
 162   LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
 163   cat > conftest.map <<EOF
 164 FOO_1.0 {
 165   global: *foo*; bar; local: *;
 166 };
 167 EOF
 168   AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
 169   if test x$gfortran_use_symver = xno; then
 170     case "$target_os" in
 171       solaris2*)
 172         LDFLAGS="$save_LDFLAGS"
 173         LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
 174         # Sun ld cannot handle wildcards and treats all entries as undefined.
 175         cat > conftest.map <<EOF
 176 FOO_1.0 {
 177   global: foo; local: *;
 178 };
 179 EOF
 180         AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no])
 181         ;;
 182     esac
 183   fi
 184   LDFLAGS="$save_LDFLAGS"
 185 fi
 186 AC_MSG_RESULT($gfortran_use_symver)
 187 AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
 188 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
 189 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun])
 190
 191 # Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
 192 # similarly to how libstdc++ does it
 193 ac_test_CFLAGS="${CFLAGS+set}"
 194 ac_save_CFLAGS="$CFLAGS"
 195
 196 # Check for -ffunction-sections -fdata-sections
 197 AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
 198 CFLAGS='-Werror -ffunction-sections -fdata-sections'
 199 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no])
 200 if test "$ac_test_CFLAGS" = set; then
 201   CFLAGS="$ac_save_CFLAGS"
 202 else
 203   # this is the suspicious part
 204   CFLAGS=""
 205 fi
 206 if test x"$ac_fdsections" = x"yes"; then
 207   SECTION_FLAGS='-ffunction-sections -fdata-sections'
 208 fi
 209 AC_MSG_RESULT($ac_fdsections)
 210 AC_SUBST(SECTION_FLAGS)
 211
 212 # Find other programs we need.
 213 AC_CHECK_TOOL(AS, as)
 214 AC_CHECK_TOOL(AR, ar)
 215 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 216 AC_PROG_MAKE_SET
 217 AC_PROG_INSTALL
 218
 219 # Configure libtool
 220 #AC_MSG_NOTICE([====== Starting libtool configuration])
 221 AC_LIBTOOL_DLOPEN
 222 AM_PROG_LIBTOOL
 223 ACX_LT_HOST_FLAGS
 224 AC_SUBST(enable_shared)
 225 AC_SUBST(enable_static)
 226 #AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
 227
 228 # We need gfortran to compile parts of the library
 229 #AC_PROG_FC(gfortran)
 230 FC="$GFORTRAN"
 231 AC_PROG_FC(gfortran)
 232
 233 # extra LD Flags which are required for targets
 234 case "${host}" in
 235   *-darwin*)
 236     # Darwin needs -single_module when linking libgfortran
 237     extra_ldflags_libgfortran=-Wl,-single_module
 238     ;;
 239 esac
 240 AC_SUBST(extra_ldflags_libgfortran)
 241
 242 # We need a working compiler at that point, otherwise give a clear
 243 # error message and bail out.
 244 LIBGFOR_WORKING_GFORTRAN
 245
 246 AC_SYS_LARGEFILE
 247
 248 # Types
 249 AC_TYPE_OFF_T
 250 AC_TYPE_INTPTR_T
 251 AC_TYPE_UINTPTR_T
 252 AC_CHECK_TYPES([ptrdiff_t])
 253
 254 # check header files (we assume C89 is available, so don't check for that)
 255 AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \
 256 sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \
 257 pwd.h complex.h)
 258
 259 GCC_HEADER_STDINT(gstdint.h)
 260
 261 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
 262
 263 # Check for library functions.
 264 AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
 265 ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \
 266 alarm access fork execl wait setmode execve pipe dup2 close \
 267 strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
 268 getcwd localtime_r gmtime_r strerror_r getpwuid_r ttyname_r clock_gettime \
 269 readlink getgid getpid getppid getuid geteuid umask)
 270
 271 # Check for C99 (and other IEEE) math functions
 272 GCC_CHECK_MATH_FUNC([acosf],[AC_DEFINE([HAVE_ACOSF],[1],[acosf is available])])
 273 GCC_CHECK_MATH_FUNC([acos],[AC_DEFINE([HAVE_ACOS],[1],[acos is available])])
 274 GCC_CHECK_MATH_FUNC([acosl],[AC_DEFINE([HAVE_ACOSL],[1],[acosl is available])])
 275 GCC_CHECK_MATH_FUNC([acoshf],[AC_DEFINE([HAVE_ACOSHF],[1],[acoshf is available])])
 276 GCC_CHECK_MATH_FUNC([acosh],[AC_DEFINE([HAVE_ACOSH],[1],[acosh is available])])
 277 GCC_CHECK_MATH_FUNC([acoshl],[AC_DEFINE([HAVE_ACOSHL],[1],[acoshl is available])])
 278 GCC_CHECK_MATH_FUNC([asinf],[AC_DEFINE([HAVE_ASINF],[1],[asinf is available])])
 279 GCC_CHECK_MATH_FUNC([asin],[AC_DEFINE([HAVE_ASIN],[1],[asin is available])])
 280 GCC_CHECK_MATH_FUNC([asinl],[AC_DEFINE([HAVE_ASINL],[1],[asinl is available])])
 281 GCC_CHECK_MATH_FUNC([asinhf],[AC_DEFINE([HAVE_ASINHF],[1],[asinhf is available])])
 282 GCC_CHECK_MATH_FUNC([asinh],[AC_DEFINE([HAVE_ASINH],[1],[asinh is available])])
 283 GCC_CHECK_MATH_FUNC([asinhl],[AC_DEFINE([HAVE_ASINHL],[1],[asinhl is available])])
 284 GCC_CHECK_MATH_FUNC([atan2f],[AC_DEFINE([HAVE_ATAN2F],[1],[atan2f is available])])
 285 GCC_CHECK_MATH_FUNC([atan2],[AC_DEFINE([HAVE_ATAN2],[1],[atan2 is available])])
 286 GCC_CHECK_MATH_FUNC([atan2l],[AC_DEFINE([HAVE_ATAN2L],[1],[atan2l is available])])
 287 GCC_CHECK_MATH_FUNC([atanf],[AC_DEFINE([HAVE_ATANF],[1],[atanf is available])])
 288 GCC_CHECK_MATH_FUNC([atan],[AC_DEFINE([HAVE_ATAN],[1],[atan is available])])
 289 GCC_CHECK_MATH_FUNC([atanl],[AC_DEFINE([HAVE_ATANL],[1],[atanl is available])])
 290 GCC_CHECK_MATH_FUNC([atanhf],[AC_DEFINE([HAVE_ATANHF],[1],[atanhf is available])])
 291 GCC_CHECK_MATH_FUNC([atanh],[AC_DEFINE([HAVE_ATANH],[1],[atanh is available])])
 292 GCC_CHECK_MATH_FUNC([atanhl],[AC_DEFINE([HAVE_ATANHL],[1],[atanhl is available])])
 293 GCC_CHECK_MATH_FUNC([cargf],[AC_DEFINE([HAVE_CARGF],[1],[cargf is available])])
 294 GCC_CHECK_MATH_FUNC([carg],[AC_DEFINE([HAVE_CARG],[1],[carg is available])])
 295 GCC_CHECK_MATH_FUNC([cargl],[AC_DEFINE([HAVE_CARGL],[1],[cargl is available])])
 296 GCC_CHECK_MATH_FUNC([ceilf],[AC_DEFINE([HAVE_CEILF],[1],[ceilf is available])])
 297 GCC_CHECK_MATH_FUNC([ceil],[AC_DEFINE([HAVE_CEIL],[1],[ceil is available])])
 298 GCC_CHECK_MATH_FUNC([ceill],[AC_DEFINE([HAVE_CEILL],[1],[ceill is available])])
 299 GCC_CHECK_MATH_FUNC([copysignf],[AC_DEFINE([HAVE_COPYSIGNF],[1],[copysignf is available])])
 300 GCC_CHECK_MATH_FUNC([copysign],[AC_DEFINE([HAVE_COPYSIGN],[1],[copysign is available])])
 301 GCC_CHECK_MATH_FUNC([copysignl],[AC_DEFINE([HAVE_COPYSIGNL],[1],[copysignl is available])])
 302 GCC_CHECK_MATH_FUNC([cosf],[AC_DEFINE([HAVE_COSF],[1],[cosf is available])])
 303 GCC_CHECK_MATH_FUNC([cos],[AC_DEFINE([HAVE_COS],[1],[cos is available])])
 304 GCC_CHECK_MATH_FUNC([cosl],[AC_DEFINE([HAVE_COSL],[1],[cosl is available])])
 305 GCC_CHECK_MATH_FUNC([ccosf],[AC_DEFINE([HAVE_CCOSF],[1],[ccosf is available])])
 306 GCC_CHECK_MATH_FUNC([ccos],[AC_DEFINE([HAVE_CCOS],[1],[ccos is available])])
 307 GCC_CHECK_MATH_FUNC([ccosl],[AC_DEFINE([HAVE_CCOSL],[1],[ccosl is available])])
 308 GCC_CHECK_MATH_FUNC([coshf],[AC_DEFINE([HAVE_COSHF],[1],[coshf is available])])
 309 GCC_CHECK_MATH_FUNC([cosh],[AC_DEFINE([HAVE_COSH],[1],[cosh is available])])
 310 GCC_CHECK_MATH_FUNC([coshl],[AC_DEFINE([HAVE_COSHL],[1],[coshl is available])])
 311 GCC_CHECK_MATH_FUNC([ccoshf],[AC_DEFINE([HAVE_CCOSHF],[1],[ccoshf is available])])
 312 GCC_CHECK_MATH_FUNC([ccosh],[AC_DEFINE([HAVE_CCOSH],[1],[ccosh is available])])
 313 GCC_CHECK_MATH_FUNC([ccoshl],[AC_DEFINE([HAVE_CCOSHL],[1],[ccoshl is available])])
 314 GCC_CHECK_MATH_FUNC([expf],[AC_DEFINE([HAVE_EXPF],[1],[expf is available])])
 315 GCC_CHECK_MATH_FUNC([exp],[AC_DEFINE([HAVE_EXP],[1],[exp is available])])
 316 GCC_CHECK_MATH_FUNC([expl],[AC_DEFINE([HAVE_EXPL],[1],[expl is available])])
 317 GCC_CHECK_MATH_FUNC([cexpf],[AC_DEFINE([HAVE_CEXPF],[1],[cexpf is available])])
 318 GCC_CHECK_MATH_FUNC([cexp],[AC_DEFINE([HAVE_CEXP],[1],[cexp is available])])
 319 GCC_CHECK_MATH_FUNC([cexpl],[AC_DEFINE([HAVE_CEXPL],[1],[cexpl is available])])
 320 GCC_CHECK_MATH_FUNC([fabsf],[AC_DEFINE([HAVE_FABSF],[1],[fabsf is available])])
 321 GCC_CHECK_MATH_FUNC([fabs],[AC_DEFINE([HAVE_FABS],[1],[fabs is available])])
 322 GCC_CHECK_MATH_FUNC([fabsl],[AC_DEFINE([HAVE_FABSL],[1],[fabsl is available])])
 323 GCC_CHECK_MATH_FUNC([cabsf],[AC_DEFINE([HAVE_CABSF],[1],[cabsf is available])])
 324 GCC_CHECK_MATH_FUNC([cabs],[AC_DEFINE([HAVE_CABS],[1],[cabs is available])])
 325 GCC_CHECK_MATH_FUNC([cabsl],[AC_DEFINE([HAVE_CABSL],[1],[cabsl is available])])
 326 GCC_CHECK_MATH_FUNC([floorf],[AC_DEFINE([HAVE_FLOORF],[1],[floorf is available])])
 327 GCC_CHECK_MATH_FUNC([floor],[AC_DEFINE([HAVE_FLOOR],[1],[floor is available])])
 328 GCC_CHECK_MATH_FUNC([floorl],[AC_DEFINE([HAVE_FLOORL],[1],[floorl is available])])
 329 GCC_CHECK_MATH_FUNC([fmodf],[AC_DEFINE([HAVE_FMODF],[1],[fmodf is available])])
 330 GCC_CHECK_MATH_FUNC([fmod],[AC_DEFINE([HAVE_FMOD],[1],[fmod is available])])
 331 GCC_CHECK_MATH_FUNC([fmodl],[AC_DEFINE([HAVE_FMODL],[1],[fmodl is available])])
 332 GCC_CHECK_MATH_FUNC([frexpf],[AC_DEFINE([HAVE_FREXPF],[1],[frexpf is available])])
 333 GCC_CHECK_MATH_FUNC([frexp],[AC_DEFINE([HAVE_FREXP],[1],[frexp is available])])
 334 GCC_CHECK_MATH_FUNC([frexpl],[AC_DEFINE([HAVE_FREXPL],[1],[frexpl is available])])
 335 GCC_CHECK_MATH_FUNC([hypotf],[AC_DEFINE([HAVE_HYPOTF],[1],[hypotf is available])])
 336 GCC_CHECK_MATH_FUNC([hypot],[AC_DEFINE([HAVE_HYPOT],[1],[hypot is available])])
 337 GCC_CHECK_MATH_FUNC([hypotl],[AC_DEFINE([HAVE_HYPOTL],[1],[hypotl is available])])
 338 GCC_CHECK_MATH_FUNC([ldexpf],[AC_DEFINE([HAVE_LDEXPF],[1],[ldexpf is available])])
 339 GCC_CHECK_MATH_FUNC([ldexp],[AC_DEFINE([HAVE_LDEXP],[1],[ldexp is available])])
 340 GCC_CHECK_MATH_FUNC([ldexpl],[AC_DEFINE([HAVE_LDEXPL],[1],[ldexpl is available])])
 341 GCC_CHECK_MATH_FUNC([logf],[AC_DEFINE([HAVE_LOGF],[1],[logf is available])])
 342 GCC_CHECK_MATH_FUNC([log],[AC_DEFINE([HAVE_LOG],[1],[log is available])])
 343 GCC_CHECK_MATH_FUNC([logl],[AC_DEFINE([HAVE_LOGL],[1],[logl is available])])
 344 GCC_CHECK_MATH_FUNC([clogf],[AC_DEFINE([HAVE_CLOGF],[1],[clogf is available])])
 345 GCC_CHECK_MATH_FUNC([clog],[AC_DEFINE([HAVE_CLOG],[1],[clog is available])])
 346 GCC_CHECK_MATH_FUNC([clogl],[AC_DEFINE([HAVE_CLOGL],[1],[clogl is available])])
 347 GCC_CHECK_MATH_FUNC([log10f],[AC_DEFINE([HAVE_LOG10F],[1],[log10f is available])])
 348 GCC_CHECK_MATH_FUNC([log10],[AC_DEFINE([HAVE_LOG10],[1],[log10 is available])])
 349 GCC_CHECK_MATH_FUNC([log10l],[AC_DEFINE([HAVE_LOG10L],[1],[log10l is available])])
 350 GCC_CHECK_MATH_FUNC([clog10f],[AC_DEFINE([HAVE_CLOG10F],[1],[clog10f is available])])
 351 GCC_CHECK_MATH_FUNC([clog10],[AC_DEFINE([HAVE_CLOG10],[1],[clog10 is available])])
 352 GCC_CHECK_MATH_FUNC([clog10l],[AC_DEFINE([HAVE_CLOG10L],[1],[clog10l is available])])
 353 GCC_CHECK_MATH_FUNC([nextafterf],[AC_DEFINE([HAVE_NEXTAFTERF],[1],[nextafterf is available])])
 354 GCC_CHECK_MATH_FUNC([nextafter],[AC_DEFINE([HAVE_NEXTAFTER],[1],[nextafter is available])])
 355 GCC_CHECK_MATH_FUNC([nextafterl],[AC_DEFINE([HAVE_NEXTAFTERL],[1],[nextafterl is available])])
 356 GCC_CHECK_MATH_FUNC([powf],[AC_DEFINE([HAVE_POWF],[1],[powf is available])])
 357 GCC_CHECK_MATH_FUNC([pow],[AC_DEFINE([HAVE_POW],[1],[pow is available])])
 358 GCC_CHECK_MATH_FUNC([powl],[AC_DEFINE([HAVE_POWL],[1],[powl is available])])
 359 GCC_CHECK_MATH_FUNC([cpowf],[AC_DEFINE([HAVE_CPOWF],[1],[cpowf is available])])
 360 GCC_CHECK_MATH_FUNC([cpow],[AC_DEFINE([HAVE_CPOW],[1],[cpow is available])])
 361 GCC_CHECK_MATH_FUNC([cpowl],[AC_DEFINE([HAVE_CPOWL],[1],[cpowl is available])])
 362 GCC_CHECK_MATH_FUNC([roundf],[AC_DEFINE([HAVE_ROUNDF],[1],[roundf is available])])
 363 GCC_CHECK_MATH_FUNC([round],[AC_DEFINE([HAVE_ROUND],[1],[round is available])])
 364 GCC_CHECK_MATH_FUNC([roundl],[AC_DEFINE([HAVE_ROUNDL],[1],[roundl is available])])
 365 GCC_CHECK_MATH_FUNC([lroundf],[AC_DEFINE([HAVE_LROUNDF],[1],[lroundf is available])])
 366 GCC_CHECK_MATH_FUNC([lround],[AC_DEFINE([HAVE_LROUND],[1],[lround is available])])
 367 GCC_CHECK_MATH_FUNC([lroundl],[AC_DEFINE([HAVE_LROUNDL],[1],[lroundl is available])])
 368 GCC_CHECK_MATH_FUNC([llroundf],[AC_DEFINE([HAVE_LLROUNDF],[1],[llroundf is available])])
 369 GCC_CHECK_MATH_FUNC([llround],[AC_DEFINE([HAVE_LLROUND],[1],[llround is available])])
 370 GCC_CHECK_MATH_FUNC([llroundl],[AC_DEFINE([HAVE_LLROUNDL],[1],[llroundl is available])])
 371 GCC_CHECK_MATH_FUNC([scalbnf],[AC_DEFINE([HAVE_SCALBNF],[1],[scalbnf is available])])
 372 GCC_CHECK_MATH_FUNC([scalbn],[AC_DEFINE([HAVE_SCALBN],[1],[scalbn is available])])
 373 GCC_CHECK_MATH_FUNC([scalbnl],[AC_DEFINE([HAVE_SCALBNL],[1],[scalbnl is available])])
 374 GCC_CHECK_MATH_FUNC([sinf],[AC_DEFINE([HAVE_SINF],[1],[sinf is available])])
 375 GCC_CHECK_MATH_FUNC([sin],[AC_DEFINE([HAVE_SIN],[1],[sin is available])])
 376 GCC_CHECK_MATH_FUNC([sinl],[AC_DEFINE([HAVE_SINL],[1],[sinl is available])])
 377 GCC_CHECK_MATH_FUNC([csinf],[AC_DEFINE([HAVE_CSINF],[1],[csinf is available])])
 378 GCC_CHECK_MATH_FUNC([csin],[AC_DEFINE([HAVE_CSIN],[1],[csin is available])])
 379 GCC_CHECK_MATH_FUNC([csinl],[AC_DEFINE([HAVE_CSINL],[1],[csinl is available])])
 380 GCC_CHECK_MATH_FUNC([sinhf],[AC_DEFINE([HAVE_SINHF],[1],[sinhf is available])])
 381 GCC_CHECK_MATH_FUNC([sinh],[AC_DEFINE([HAVE_SINH],[1],[sinh is available])])
 382 GCC_CHECK_MATH_FUNC([sinhl],[AC_DEFINE([HAVE_SINHL],[1],[sinhl is available])])
 383 GCC_CHECK_MATH_FUNC([csinhf],[AC_DEFINE([HAVE_CSINHF],[1],[csinhf is available])])
 384 GCC_CHECK_MATH_FUNC([csinh],[AC_DEFINE([HAVE_CSINH],[1],[csinh is available])])
 385 GCC_CHECK_MATH_FUNC([csinhl],[AC_DEFINE([HAVE_CSINHL],[1],[csinhl is available])])
 386 GCC_CHECK_MATH_FUNC([sqrtf],[AC_DEFINE([HAVE_SQRTF],[1],[sqrtf is available])])
 387 GCC_CHECK_MATH_FUNC([sqrt],[AC_DEFINE([HAVE_SQRT],[1],[sqrt is available])])
 388 GCC_CHECK_MATH_FUNC([sqrtl],[AC_DEFINE([HAVE_SQRTL],[1],[sqrtl is available])])
 389 GCC_CHECK_MATH_FUNC([csqrtf],[AC_DEFINE([HAVE_CSQRTF],[1],[csqrtf is available])])
 390 GCC_CHECK_MATH_FUNC([csqrt],[AC_DEFINE([HAVE_CSQRT],[1],[csqrt is available])])
 391 GCC_CHECK_MATH_FUNC([csqrtl],[AC_DEFINE([HAVE_CSQRTL],[1],[csqrtl is available])])
 392 GCC_CHECK_MATH_FUNC([tanf],[AC_DEFINE([HAVE_TANF],[1],[tanf is available])])
 393 GCC_CHECK_MATH_FUNC([tan],[AC_DEFINE([HAVE_TAN],[1],[tan is available])])
 394 GCC_CHECK_MATH_FUNC([tanl],[AC_DEFINE([HAVE_TANL],[1],[tanl is available])])
 395 GCC_CHECK_MATH_FUNC([ctanf],[AC_DEFINE([HAVE_CTANF],[1],[ctanf is available])])
 396 GCC_CHECK_MATH_FUNC([ctan],[AC_DEFINE([HAVE_CTAN],[1],[ctan is available])])
 397 GCC_CHECK_MATH_FUNC([ctanl],[AC_DEFINE([HAVE_CTANL],[1],[ctanl is available])])
 398 GCC_CHECK_MATH_FUNC([tanhf],[AC_DEFINE([HAVE_TANHF],[1],[tanhf is available])])
 399 GCC_CHECK_MATH_FUNC([tanh],[AC_DEFINE([HAVE_TANH],[1],[tanh is available])])
 400 GCC_CHECK_MATH_FUNC([tanhl],[AC_DEFINE([HAVE_TANHL],[1],[tanhl is available])])
 401 GCC_CHECK_MATH_FUNC([ctanhf],[AC_DEFINE([HAVE_CTANHF],[1],[ctanhf is available])])
 402 GCC_CHECK_MATH_FUNC([ctanh],[AC_DEFINE([HAVE_CTANH],[1],[ctanh is available])])
 403 GCC_CHECK_MATH_FUNC([ctanhl],[AC_DEFINE([HAVE_CTANHL],[1],[ctanhl is available])])
 404 GCC_CHECK_MATH_FUNC([truncf],[AC_DEFINE([HAVE_TRUNCF],[1],[truncf is available])])
 405 GCC_CHECK_MATH_FUNC([trunc],[AC_DEFINE([HAVE_TRUNC],[1],[trunc is available])])
 406 GCC_CHECK_MATH_FUNC([truncl],[AC_DEFINE([HAVE_TRUNCL],[1],[truncl is available])])
 407 GCC_CHECK_MATH_FUNC([erff],[AC_DEFINE([HAVE_ERFF],[1],[erff is available])])
 408 GCC_CHECK_MATH_FUNC([erf],[AC_DEFINE([HAVE_ERF],[1],[erf is available])])
 409 GCC_CHECK_MATH_FUNC([erfl],[AC_DEFINE([HAVE_ERFL],[1],[erfl is available])])
 410 GCC_CHECK_MATH_FUNC([erfcf],[AC_DEFINE([HAVE_ERFCF],[1],[erfcf is available])])
 411 GCC_CHECK_MATH_FUNC([erfc],[AC_DEFINE([HAVE_ERFC],[1],[erfc is available])])
 412 GCC_CHECK_MATH_FUNC([erfcl],[AC_DEFINE([HAVE_ERFCL],[1],[erfcl is available])])
 413 GCC_CHECK_MATH_FUNC([j0f],[AC_DEFINE([HAVE_J0F],[1],[j0f is available])])
 414 GCC_CHECK_MATH_FUNC([j0],[AC_DEFINE([HAVE_J0],[1],[j0 is available])])
 415 GCC_CHECK_MATH_FUNC([j0l],[AC_DEFINE([HAVE_J0L],[1],[j0l is available])])
 416 GCC_CHECK_MATH_FUNC([j1f],[AC_DEFINE([HAVE_J1F],[1],[j1f is available])])
 417 GCC_CHECK_MATH_FUNC([j1],[AC_DEFINE([HAVE_J1],[1],[j1 is available])])
 418 GCC_CHECK_MATH_FUNC([j1l],[AC_DEFINE([HAVE_J1L],[1],[j1l is available])])
 419 GCC_CHECK_MATH_FUNC([jnf],[AC_DEFINE([HAVE_JNF],[1],[jnf is available])])
 420 GCC_CHECK_MATH_FUNC([jn],[AC_DEFINE([HAVE_JN],[1],[jn is available])])
 421 GCC_CHECK_MATH_FUNC([jnl],[AC_DEFINE([HAVE_JNL],[1],[jnl is available])])
 422 GCC_CHECK_MATH_FUNC([y0f],[AC_DEFINE([HAVE_Y0F],[1],[y0f is available])])
 423 GCC_CHECK_MATH_FUNC([y0],[AC_DEFINE([HAVE_Y0],[1],[y0 is available])])
 424 GCC_CHECK_MATH_FUNC([y0l],[AC_DEFINE([HAVE_Y0L],[1],[y0l is available])])
 425 GCC_CHECK_MATH_FUNC([y1f],[AC_DEFINE([HAVE_Y1F],[1],[y1f is available])])
 426 GCC_CHECK_MATH_FUNC([y1],[AC_DEFINE([HAVE_Y1],[1],[y1 is available])])
 427 GCC_CHECK_MATH_FUNC([y1l],[AC_DEFINE([HAVE_Y1L],[1],[y1l is available])])
 428 GCC_CHECK_MATH_FUNC([ynf],[AC_DEFINE([HAVE_YNF],[1],[ynf is available])])
 429 GCC_CHECK_MATH_FUNC([yn],[AC_DEFINE([HAVE_YN],[1],[yn is available])])
 430 GCC_CHECK_MATH_FUNC([ynl],[AC_DEFINE([HAVE_YNL],[1],[ynl is available])])
 431 GCC_CHECK_MATH_FUNC([tgamma],[AC_DEFINE([HAVE_TGAMMA],[1],[tgamma is available])])
 432 GCC_CHECK_MATH_FUNC([tgammaf],[AC_DEFINE([HAVE_TGAMMAF],[1],[tgammaf is available])])
 433 GCC_CHECK_MATH_FUNC([tgammal],[AC_DEFINE([HAVE_TGAMMAL],[1],[tgammal is available])])
 434 GCC_CHECK_MATH_FUNC([lgamma],[AC_DEFINE([HAVE_LGAMMA],[1],[lgamma is available])])
 435 GCC_CHECK_MATH_FUNC([lgammaf],[AC_DEFINE([HAVE_LGAMMAF],[1],[lgammaf is available])])
 436 GCC_CHECK_MATH_FUNC([lgammal],[AC_DEFINE([HAVE_LGAMMAL],[1],[lgammal is available])])
 437
 438 # Check for GFORTRAN_C99_1.1 funcs
 439 GCC_CHECK_MATH_FUNC([cacos],[AC_DEFINE([HAVE_CACOS],[1],[cacos is available])])
 440 GCC_CHECK_MATH_FUNC([cacosf],[AC_DEFINE([HAVE_CACOSF],[1],[cacosf is available])])
 441 GCC_CHECK_MATH_FUNC([cacosh],[AC_DEFINE([HAVE_CACOSH],[1],[cacosh is available])])
 442 GCC_CHECK_MATH_FUNC([cacoshf],[AC_DEFINE([HAVE_CACOSHF],[1],[cacoshf is available])])
 443 GCC_CHECK_MATH_FUNC([cacoshl],[AC_DEFINE([HAVE_CACOSHL],[1],[cacoshl is available])])
 444 GCC_CHECK_MATH_FUNC([cacosl],[AC_DEFINE([HAVE_CACOSL],[1],[cacosl is available])])
 445 GCC_CHECK_MATH_FUNC([casin],[AC_DEFINE([HAVE_CASIN],[1],[casin is available])])
 446 GCC_CHECK_MATH_FUNC([casinf],[AC_DEFINE([HAVE_CASINF],[1],[casinf is available])])
 447 GCC_CHECK_MATH_FUNC([casinh],[AC_DEFINE([HAVE_CASINH],[1],[casinh is available])])
 448 GCC_CHECK_MATH_FUNC([casinhf],[AC_DEFINE([HAVE_CASINHF],[1],[casinhf is available])])
 449 GCC_CHECK_MATH_FUNC([casinhl],[AC_DEFINE([HAVE_CASINHL],[1],[casinhl is available])])
 450 GCC_CHECK_MATH_FUNC([casinl],[AC_DEFINE([HAVE_CASINL],[1],[casinl is available])])
 451 GCC_CHECK_MATH_FUNC([catan],[AC_DEFINE([HAVE_CATAN],[1],[catan is available])])
 452 GCC_CHECK_MATH_FUNC([catanf],[AC_DEFINE([HAVE_CATANF],[1],[catanf is available])])
 453 GCC_CHECK_MATH_FUNC([catanh],[AC_DEFINE([HAVE_CATANH],[1],[catanh is available])])
 454 GCC_CHECK_MATH_FUNC([catanhf],[AC_DEFINE([HAVE_CATANHF],[1],[catanhf is available])])
 455 GCC_CHECK_MATH_FUNC([catanhl],[AC_DEFINE([HAVE_CATANHL],[1],[catanhl is available])])
 456 GCC_CHECK_MATH_FUNC([catanl],[AC_DEFINE([HAVE_CATANL],[1],[catanl is available])])
 457
 458 # On AIX, clog is present in libm as __clog
 459 AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
 460
 461 # Check whether the system has a working stat()
 462 LIBGFOR_CHECK_WORKING_STAT
 463
 464 # Check whether __mingw_snprintf() is present
 465 LIBGFOR_CHECK_MINGW_SNPRINTF
 466
 467 # Check for a broken powf implementation
 468 LIBGFOR_CHECK_FOR_BROKEN_POWF
 469
 470 # Check whether libquadmath should be used
 471 AC_ARG_ENABLE(libquadmath-support,
 472 AS_HELP_STRING([--disable-libquadmath-support],
 473   [disable libquadmath support for Fortran]),
 474 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 475 ENABLE_LIBQUADMATH_SUPPORT=yes)
 476 enable_libquadmath_support=
 477 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 478   enable_libquadmath_support=no
 479 fi
 480
 481 # Check whether we have a __float128 type, depends on enable_libquadmath_support
 482 LIBGFOR_CHECK_FLOAT128
 483
 484 # Check for GNU libc feenableexcept
 485 AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
 486
 487 # At least for glibc, clock_gettime is in librt.  But don't
 488 # pull that in if it still doesn't give us the function we want.  This
 489 # test is copied from libgomp, and modified to not link in -lrt as
 490 # libgfortran calls clock_gettime via a weak reference if it's found
 491 # in librt.
 492 if test $ac_cv_func_clock_gettime = no; then
 493   AC_CHECK_LIB(rt, clock_gettime,
 494     [AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1,
 495                [Define to 1 if you have the `clock_gettime' function in librt.])])
 496 fi
 497
 498 # Check for SysV fpsetmask
 499 LIBGFOR_CHECK_FPSETMASK
 500
 501 # Check for AIX fp_trap and fp_enable
 502 AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
 503 AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
 504
 505 # Runs configure.host to set up necessary host-dependent shell variables.
 506 # We then display a message about it, and propagate them through the
 507 # build chain.
 508 . ${srcdir}/configure.host
 509 AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
 510 FPU_HOST_HEADER=config/${fpu_host}.h
 511 AC_SUBST(FPU_HOST_HEADER)
 512
 513 # Some targets require additional compiler options for IEEE compatibility.
 514 IEEE_FLAGS="${ieee_flags}"
 515 AC_SUBST(IEEE_FLAGS)
 516
 517
 518 # Check for POSIX getpwuid_r
 519 #
 520 # There are two versions of getpwuid_r, the POSIX one with 5
 521 # arguments, and another one with 4 arguments used by at least HP-UX
 522 # 10.2.
 523 if test "$ac_cv_func_getpwuid_r" = "yes"; then
 524    AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [
 525    AC_LINK_IFELSE([AC_LANG_PROGRAM([
 526 #include <stdio.h>
 527 #include <sys/types.h>
 528 #include <pwd.h>], [
 529     getpwuid_r(0, NULL, NULL, 0, NULL);
 530     ])],  [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])])
 531 fi
 532 if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then
 533     AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.])
 534 fi
 535
 536
 537 # Check out attribute support.
 538 LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
 539 LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT
 540 LIBGFOR_CHECK_ATTRIBUTE_ALIAS
 541
 542 # Check out sync builtins support.
 543 LIBGFOR_CHECK_SYNC_FETCH_AND_ADD
 544
 545 # Check out #pragma weak.
 546 LIBGFOR_GTHREAD_WEAK
 547
 548 # Various other checks on target
 549 LIBGFOR_CHECK_UNLINK_OPEN_FILE
 550
 551 # Check whether line terminator is LF or CRLF
 552 LIBGFOR_CHECK_CRLF
 553
 554 # Check whether we have _Unwind_GetIPInfo for backtrace
 555 GCC_CHECK_UNWIND_GETIPINFO
 556
 557 AC_CACHE_SAVE
 558
 559 if test ${multilib} = yes; then
 560   multilib_arg="--enable-multilib"
 561 else
 562   multilib_arg=
 563 fi
 564
 565 # Write our Makefile and spec file.
 566 AC_CONFIG_FILES([
 567 Makefile
 568 libgfortran.spec
 569 ])
 570 AC_OUTPUT