# Process this file with autoconf to produce a configure script, like so: # aclocal && autoconf && autoheader && automake AC_PREREQ(2.59) AC_INIT([GNU Fortran Runtime Library], 0.2,,[libgfortran]) AC_CONFIG_HEADER(config.h) # ------- # Options # ------- AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) AC_ARG_ENABLE(version-specific-runtime-libs, [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], [case "$enableval" in yes) version_specific_libs=yes ;; no) version_specific_libs=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; esac], [version_specific_libs=no]) AC_MSG_RESULT($version_specific_libs) # Gets build, host, target, *_vendor, *_cpu, *_os, etc. # # You will slowly go insane if you do not grok the following fact: when # building this library, the top-level /target/ becomes the library's /host/. # # configure then causes --target to default to --host, exactly like any # other package using autoconf. Therefore, 'target' and 'host' will # always be the same. This makes sense both for native and cross compilers # just think about it for a little while. :-) # # Also, if this library is being configured as part of a cross compiler, the # top-level configure script will pass the "real" host as $with_cross_host. # # Do not delete or change the following two lines. For why, see # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html AC_CANONICAL_SYSTEM target_alias=${target_alias-$host_alias} # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. # 1.8.2: minimum required version # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch # of other PACKAGE_* variables will, however, and there's nothing # we can do about that; they come from AC_INIT). # foreign: we don't follow the normal rules for GNU packages (no COPYING # file in the top srcdir, etc, etc), so stop complaining. # no-dependencies: turns off auto dependency generation (just for now) # -Wall: turns on all automake warnings... # -Wno-portability: ...except this one, since GNU make is required. AM_INIT_AUTOMAKE([1.8.2 no-define foreign no-dependencies -Wall -Wno-portability]) AM_MAINTAINER_MODE AM_ENABLE_MULTILIB(, ..) # Handy for debugging: #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 # Are we being configured with some form of cross compiler? # NB: We don't actually need to know this just now, but when, say, a test # suite is included, we'll have to know. if test "$build" != "$host"; then LIBGFOR_IS_NATIVE=false GCC_NO_EXECUTABLES else LIBGFOR_IS_NATIVE=true fi # Calculate toolexeclibdir # Also toolexecdir, though it's only used in toolexeclibdir case ${version_specific_libs} in yes) # Need the gcc compiler version to know where to install libraries # and header files if --enable-version-specific-runtime-libs option # is selected. toolexecdir='$(libdir)/gcc/$(target_alias)' toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' ;; no) if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then # Install a library built with a cross compiler in tooldir, not libdir. toolexecdir='$(exec_prefix)/$(target_alias)' toolexeclibdir='$(toolexecdir)/lib' else toolexecdir='$(libdir)/gcc-lib/$(target_alias)' toolexeclibdir='$(libdir)' fi multi_os_directory=`$CC -print-multi-os-directory` case $multi_os_directory in .) ;; # Avoid trailing /. *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; esac ;; esac AC_SUBST(toolexecdir) AC_SUBST(toolexeclibdir) # Check the compiler. # The same as in boehm-gc and libstdc++. Have to borrow it from there. # We must force CC to /not/ be precious variables; otherwise # the wrong, non-multilib-adjusted value will be used in multilibs. # As a side effect, we have to subst CFLAGS ourselves. m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) m4_define([_AC_ARG_VAR_PRECIOUS],[]) AC_PROG_CC m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) # Add -Wall if we are using GCC. if test "x$GCC" = "xyes"; then AM_FCFLAGS="-Wall" ## We like to use C99 routines when available. This makes sure that ## __STDC_VERSION__ is set such that libc includes make them available. AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes" fi AC_SUBST(AM_FCFLAGS) AC_SUBST(AM_CFLAGS) # Find other programs we need. AC_CHECK_TOOL(AS, as) AC_CHECK_TOOL(AR, ar) AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) AC_PROG_MAKE_SET AC_PROG_INSTALL # Configure libtool #AC_MSG_NOTICE([====== Starting libtool configuration]) AC_LIBTOOL_DLOPEN AM_PROG_LIBTOOL AC_SUBST(enable_shared) AC_SUBST(enable_static) #AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10 # We need gfortran to compile parts of the library # We can't use AC_PROG_FC because it expects a fully working gfortran. #AC_PROG_FC(gfortran) FC="$GFORTRAN" AC_PROG_FC(gfortran) FCFLAGS="$FCFLAGS -Wall -fno-repack-arrays -fno-underscoring" # extra LD Flags which are required for targets case "${host}" in *-darwin*) # Darwin needs -single_module when linking libgfortran extra_ldflags_libgfortran=-Wl,-single_module ;; esac AC_SUBST(extra_ldflags_libgfortran) AC_SYS_LARGEFILE AC_FUNC_MMAP AC_TYPE_OFF_T # check header files AC_STDC_HEADERS AC_HAVE_HEADERS(stdlib.h stdio.h string.h stddef.h math.h unistd.h signal.h) AC_CHECK_HEADERS(time.h sys/params.h sys/time.h sys/times.h sys/resource.h) AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h ieeefp.h) AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])]) AC_CHECK_MEMBERS([struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_blocks]) AC_CHECK_MEMBERS([struct stat.st_rdev]) # Check for complex math functions AC_CHECK_LIB([m],[csin],[need_math="no"],[need_math="yes"]) # Check for library functions. AC_CHECK_FUNCS(getrusage times mkstemp strtof snprintf ftruncate chsize) AC_CHECK_FUNCS(chdir strerror getlogin gethostname kill link symlink perror) AC_CHECK_FUNCS(sleep time) # Check libc for getgid, getpid, getuid AC_CHECK_LIB([c],[getgid],[AC_DEFINE([HAVE_GETGID],[1],[libc includes getgid])]) AC_CHECK_LIB([c],[getpid],[AC_DEFINE([HAVE_GETPID],[1],[libc includes getpid])]) AC_CHECK_LIB([c],[getuid],[AC_DEFINE([HAVE_GETUID],[1],[libc includes getuid])]) # Check for C99 (and other IEEE) math functions # ??? This list seems awful long. Is there a better way to test for these? AC_CHECK_LIB([m],[acosf],[AC_DEFINE([HAVE_ACOSF],[1],[libm includes acosf])]) AC_CHECK_LIB([m],[asinf],[AC_DEFINE([HAVE_ASINF],[1],[libm includes asinf])]) AC_CHECK_LIB([m],[atan2f],[AC_DEFINE([HAVE_ATAN2F],[1],[libm includes atan2f])]) AC_CHECK_LIB([m],[atanf],[AC_DEFINE([HAVE_ATANF],[1],[libm includes atanf])]) AC_CHECK_LIB([m],[ceilf],[AC_DEFINE([HAVE_CEILF],[1],[libm includes ceilf])]) AC_CHECK_LIB([m],[copysignf],[AC_DEFINE([HAVE_COPYSIGNF],[1],[libm includes copysignf])]) AC_CHECK_LIB([m],[cosf],[AC_DEFINE([HAVE_COSF],[1],[libm includes cosf])]) AC_CHECK_LIB([m],[coshf],[AC_DEFINE([HAVE_COSHF],[1],[libm includes coshf])]) AC_CHECK_LIB([m],[expf],[AC_DEFINE([HAVE_EXPF],[1],[libm includes expf])]) AC_CHECK_LIB([m],[fabsf],[AC_DEFINE([HAVE_FABSF],[1],[libm includes fabsf])]) AC_CHECK_LIB([m],[floorf],[AC_DEFINE([HAVE_FLOORF],[1],[libm includes floorf])]) AC_CHECK_LIB([m],[frexpf],[AC_DEFINE([HAVE_FREXPF],[1],[libm includes frexpf])]) AC_CHECK_LIB([m],[hypotf],[AC_DEFINE([HAVE_HYPOTF],[1],[libm includes hypotf])]) AC_CHECK_LIB([m],[logf],[AC_DEFINE([HAVE_LOGF],[1],[libm includes logf])]) AC_CHECK_LIB([m],[log10f],[AC_DEFINE([HAVE_LOG10F],[1],[libm includes log10f])]) AC_CHECK_LIB([m],[nextafter],[AC_DEFINE([HAVE_NEXTAFTER],[1],[libm includes nextafter])]) AC_CHECK_LIB([m],[nextafterf],[AC_DEFINE([HAVE_NEXTAFTERF],[1],[libm includes nextafterf])]) AC_CHECK_LIB([m],[powf],[AC_DEFINE([HAVE_POWF],[1],[libm includes powf])]) AC_CHECK_LIB([m],[round],[AC_DEFINE([HAVE_ROUND],[1],[libm includes round])]) AC_CHECK_LIB([m],[roundf],[AC_DEFINE([HAVE_ROUNDF],[1],[libm includes roundf])]) AC_CHECK_LIB([m],[scalbnf],[AC_DEFINE([HAVE_SCALBNF],[1],[libm includes scalbnf])]) AC_CHECK_LIB([m],[sinf],[AC_DEFINE([HAVE_SINF],[1],[libm includes sinf])]) AC_CHECK_LIB([m],[sinhf],[AC_DEFINE([HAVE_SINHF],[1],[libm includes sinhf])]) AC_CHECK_LIB([m],[sqrtf],[AC_DEFINE([HAVE_SQRTF],[1],[libm includes sqrtf])]) AC_CHECK_LIB([m],[tanf],[AC_DEFINE([HAVE_TANF],[1],[libm includes tanf])]) AC_CHECK_LIB([m],[tanhf],[AC_DEFINE([HAVE_TANHF],[1],[libm includes tanhf])]) AC_CHECK_LIB([m],[erf],[AC_DEFINE([HAVE_ERF],[1],[libm includes erf])]) AC_CHECK_LIB([m],[erfc],[AC_DEFINE([HAVE_ERFC],[1],[libm includes erfc])]) AC_CHECK_LIB([m],[erfcf],[AC_DEFINE([HAVE_ERFCF],[1],[libm includes erfcf])]) AC_CHECK_LIB([m],[erff],[AC_DEFINE([HAVE_ERFF],[1],[libm includes erff])]) AC_CHECK_LIB([m],[j0],[AC_DEFINE([HAVE_J0],[1],[libm includes j0])]) AC_CHECK_LIB([m],[j0f],[AC_DEFINE([HAVE_J0F],[1],[libm includes j0f])]) AC_CHECK_LIB([m],[j1],[AC_DEFINE([HAVE_J1],[1],[libm includes j1])]) AC_CHECK_LIB([m],[j1f],[AC_DEFINE([HAVE_J1F],[1],[libm includes j1f])]) AC_CHECK_LIB([m],[jn],[AC_DEFINE([HAVE_JN],[1],[libm includes jn])]) AC_CHECK_LIB([m],[jnf],[AC_DEFINE([HAVE_JNF],[1],[libm includes jnf])]) AC_CHECK_LIB([m],[y0],[AC_DEFINE([HAVE_Y0],[1],[libm includes y0])]) AC_CHECK_LIB([m],[y0f],[AC_DEFINE([HAVE_Y0F],[1],[libm includes y0f])]) AC_CHECK_LIB([m],[y1],[AC_DEFINE([HAVE_Y1],[1],[libm includes y1])]) AC_CHECK_LIB([m],[y1f],[AC_DEFINE([HAVE_Y1F],[1],[libm includes y1f])]) AC_CHECK_LIB([m],[yn],[AC_DEFINE([HAVE_YN],[1],[libm includes yn])]) AC_CHECK_LIB([m],[ynf],[AC_DEFINE([HAVE_YNF],[1],[libm includes ynf])]) # Fallback in case isfinite is not available. AC_CHECK_LIB([m],[finite],[AC_DEFINE([HAVE_FINITE],[1],[libm includes finite])]) # Let the user override this AC_ARG_ENABLE(cmath, AC_HELP_STRING([--enable-cmath],[Include complex math functions]), [need_math=$enableval]) if test "$need_math" = "yes"; then AC_MSG_NOTICE([Including complex math functions in libgfor]); extra_math_obj='$(gfor_cmath_obj)' fi AC_SUBST([MATH_OBJ],["$extra_math_obj"]) # The standard autoconf HAVE_STRUCT_TIMEZONE doesn't actually check # for struct timezone, as you might think. We also need to check how # to call gettimeofday if we have it. LIBGFOR_GETTIMEOFDAY # Attempt to assert that the target is of common type in case we don't # have C99 integer types at all. LIBGFOR_TARGET_ILP32 # Check out attribute support. LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT LIBGFOR_CHECK_ATTRIBUTE_ALIAS AC_CACHE_SAVE if test ${multilib} = yes; then multilib_arg="--enable-multilib" else multilib_arg= fi # Write our Makefile. AC_CONFIG_FILES(Makefile) AC_OUTPUT