b5b5834350
* configure.ac: Check for presence of fcntl. * configure: Regenerate. * config.h.in: Regenerate. * io/unix.c (set_close_on_exec): Check for HAVE_FCNTL. From-SVN: r208634
594 lines
19 KiB
Plaintext
594 lines
19 KiB
Plaintext
# Process this file with autoconf to produce a configure script, like so:
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# aclocal && autoconf && autoheader && automake
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AC_PREREQ(2.64)
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AC_INIT([GNU Fortran Runtime Library], 0.3,,[libgfortran])
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AC_CONFIG_HEADER(config.h)
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GCC_TOPLEV_SUBDIRS
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# -------
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# Options
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# -------
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AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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AC_ARG_ENABLE(version-specific-runtime-libs,
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AS_HELP_STRING([--enable-version-specific-runtime-libs],
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[specify that runtime libraries should be installed in a compiler-specific directory]),
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[case "$enableval" in
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yes) version_specific_libs=yes ;;
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no) version_specific_libs=no ;;
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*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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esac],
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[version_specific_libs=no])
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AC_MSG_RESULT($version_specific_libs)
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# Build with intermodule optimisations
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AC_MSG_CHECKING([for --enable-intermodule])
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AC_ARG_ENABLE(intermodule,
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AS_HELP_STRING([--enable-intermodule],[build the library in one step]),
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[case "$enable_intermodule" in
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yes) onestep="-onestep";;
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*) onestep="";;
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esac],
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[onestep=""])
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AC_MSG_RESULT($enable_intermodule)
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AM_CONDITIONAL(onestep,[test x$onestep = x-onestep])
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AC_SUBST(onestep)
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# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
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#
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# You will slowly go insane if you do not grok the following fact: when
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# building this library, the top-level /target/ becomes the library's /host/.
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#
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# configure then causes --target to default to --host, exactly like any
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# other package using autoconf. Therefore, 'target' and 'host' will
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# always be the same. This makes sense both for native and cross compilers
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# just think about it for a little while. :-)
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#
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# Also, if this library is being configured as part of a cross compiler, the
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# top-level configure script will pass the "real" host as $with_cross_host.
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#
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# Do not delete or change the following two lines. For why, see
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# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
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AC_CANONICAL_SYSTEM
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ACX_NONCANONICAL_TARGET
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target_alias=${target_alias-$host_alias}
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AC_SUBST(target_alias)
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# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
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# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
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# 1.9.6: minimum required version
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# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
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# of other PACKAGE_* variables will, however, and there's nothing
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# we can do about that; they come from AC_INIT).
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# foreign: we don't follow the normal rules for GNU packages (no COPYING
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# file in the top srcdir, etc, etc), so stop complaining.
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# no-dist: we don't want 'dist' and related rules.
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# -Wall: turns on all automake warnings...
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# -Wno-portability: ...except this one, since GNU make is required.
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AM_INIT_AUTOMAKE([1.9.6 no-define foreign no-dist -Wall -Wno-portability])
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AM_MAINTAINER_MODE
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AM_ENABLE_MULTILIB(, ..)
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# Handy for debugging:
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#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
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# Are we being configured with some form of cross compiler?
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# NB: We don't actually need to know this just now, but when, say, a test
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# suite is included, we'll have to know.
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if test "$build" != "$host"; then
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LIBGFOR_IS_NATIVE=false
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GCC_NO_EXECUTABLES
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else
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LIBGFOR_IS_NATIVE=true
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fi
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AC_USE_SYSTEM_EXTENSIONS
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# Calculate toolexeclibdir
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# Also toolexecdir, though it's only used in toolexeclibdir
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case ${version_specific_libs} in
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yes)
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# Need the gcc compiler version to know where to install libraries
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# and header files if --enable-version-specific-runtime-libs option
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# is selected.
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toolexecdir='$(libdir)/gcc/$(target_alias)'
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toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
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;;
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no)
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if test -n "$with_cross_host" &&
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test x"$with_cross_host" != x"no"; then
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# Install a library built with a cross compiler in tooldir, not libdir.
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toolexecdir='$(exec_prefix)/$(target_alias)'
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toolexeclibdir='$(toolexecdir)/lib'
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else
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toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
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toolexeclibdir='$(libdir)'
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fi
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multi_os_directory=`$CC -print-multi-os-directory`
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case $multi_os_directory in
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.) ;; # Avoid trailing /.
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*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
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esac
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;;
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esac
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AC_SUBST(toolexecdir)
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AC_SUBST(toolexeclibdir)
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# Create a spec file, so that compile/link tests don't fail
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test -f libgfortran.spec || touch libgfortran.spec
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AC_LANG_C
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# Check the compiler.
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# The same as in boehm-gc and libstdc++. Have to borrow it from there.
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# We must force CC to /not/ be precious variables; otherwise
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# the wrong, non-multilib-adjusted value will be used in multilibs.
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# As a side effect, we have to subst CFLAGS ourselves.
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m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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m4_define([_AC_ARG_VAR_PRECIOUS],[])
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AC_PROG_CC
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m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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AC_SUBST(CFLAGS)
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AM_PROG_CC_C_O
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# Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
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if test "x$GCC" = "xyes"; then
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AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
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## We like to use C99 routines when available. This makes sure that
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## __STDC_VERSION__ is set such that libc includes make them available.
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AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
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## Compile the following tests with the same system header contents
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## that we'll encounter when compiling our own source files.
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CFLAGS="-std=gnu99 $CFLAGS"
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fi
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AC_SUBST(AM_FCFLAGS)
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AC_SUBST(AM_CFLAGS)
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AC_SUBST(CFLAGS)
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# Check for symbol versioning (copied from libssp).
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AC_MSG_CHECKING([whether symbol versioning is supported])
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AC_ARG_ENABLE(symvers,
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AS_HELP_STRING([--disable-symvers],
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[disable symbol versioning for libgfortran]),
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gfortran_use_symver=$enableval,
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gfortran_use_symver=yes)
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if test "x$gfortran_use_symver" != xno; then
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
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cat > conftest.map <<EOF
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FOO_1.0 {
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global: *foo*; bar; local: *;
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};
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EOF
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
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if test x$gfortran_use_symver = xno; then
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case "$target_os" in
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solaris2*)
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LDFLAGS="$save_LDFLAGS"
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LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
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# Sun ld cannot handle wildcards and treats all entries as undefined.
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cat > conftest.map <<EOF
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FOO_1.0 {
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global: foo; local: *;
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};
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EOF
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no])
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;;
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esac
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fi
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LDFLAGS="$save_LDFLAGS"
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fi
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AC_MSG_RESULT($gfortran_use_symver)
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AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
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AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
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AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun])
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# Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
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# similarly to how libstdc++ does it
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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# Check for -ffunction-sections -fdata-sections
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AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
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CFLAGS='-Werror -ffunction-sections -fdata-sections'
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no])
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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else
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# this is the suspicious part
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CFLAGS=""
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fi
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if test x"$ac_fdsections" = x"yes"; then
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SECTION_FLAGS='-ffunction-sections -fdata-sections'
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fi
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AC_MSG_RESULT($ac_fdsections)
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AC_SUBST(SECTION_FLAGS)
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# Find other programs we need.
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AC_CHECK_TOOL(AS, as)
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
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AC_PROG_MAKE_SET
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AC_PROG_INSTALL
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# Configure libtool
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#AC_MSG_NOTICE([====== Starting libtool configuration])
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AC_LIBTOOL_DLOPEN
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AM_PROG_LIBTOOL
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ACX_LT_HOST_FLAGS
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AC_SUBST(enable_shared)
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AC_SUBST(enable_static)
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#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
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# We need gfortran to compile parts of the library
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#AC_PROG_FC(gfortran)
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FC="$GFORTRAN"
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AC_PROG_FC(gfortran)
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# extra LD Flags which are required for targets
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case "${host}" in
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*-darwin*)
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# Darwin needs -single_module when linking libgfortran
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extra_ldflags_libgfortran=-Wl,-single_module
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;;
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esac
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AC_SUBST(extra_ldflags_libgfortran)
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# We need a working compiler at that point, otherwise give a clear
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# error message and bail out.
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LIBGFOR_WORKING_GFORTRAN
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AC_SYS_LARGEFILE
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# Types
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AC_TYPE_OFF_T
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AC_TYPE_INTPTR_T
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AC_TYPE_UINTPTR_T
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AC_CHECK_TYPES([ptrdiff_t])
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# check header files (we assume C89 is available, so don't check for that)
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AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \
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sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \
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fpxcp.h pwd.h complex.h)
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GCC_HEADER_STDINT(gstdint.h)
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AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
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# Check for library functions.
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if test "x${with_newlib}" = "xyes"; then
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# We are being configured with a cross compiler. AC_REPLACE_FUNCS
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# may not work correctly, because the compiler may not be able to
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# link executables.
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AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.])
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AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.])
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AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.])
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AC_DEFINE(HAVE_STRCASESTR, 1, [Define if you have strcasestr.])
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AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.])
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AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.])
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AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.])
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# At some point, we should differentiate between architectures
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# like x86, which have long double versions, and alpha/powerpc/etc.,
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# which don't. For the time being, punt.
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if test x"long_double_math_on_this_cpu" = x"yes"; then
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AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.])
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fi
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else
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AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
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ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \
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alarm access fork execl wait setmode execve pipe dup2 close fcntl \
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strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
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getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \
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readlink getgid getpid getppid getuid geteuid umask getegid \
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secure_getenv __secure_getenv mkostemp)
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fi
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# Check strerror_r, cannot be above as versions with two and three arguments exist
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LIBGFOR_CHECK_STRERROR_R
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# Check for C99 (and other IEEE) math functions
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GCC_CHECK_MATH_FUNC([acosf])
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GCC_CHECK_MATH_FUNC([acos])
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GCC_CHECK_MATH_FUNC([acosl])
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GCC_CHECK_MATH_FUNC([acoshf])
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GCC_CHECK_MATH_FUNC([acosh])
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GCC_CHECK_MATH_FUNC([acoshl])
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GCC_CHECK_MATH_FUNC([asinf])
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GCC_CHECK_MATH_FUNC([asin])
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GCC_CHECK_MATH_FUNC([asinl])
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GCC_CHECK_MATH_FUNC([asinhf])
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GCC_CHECK_MATH_FUNC([asinh])
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GCC_CHECK_MATH_FUNC([asinhl])
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GCC_CHECK_MATH_FUNC([atan2f])
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GCC_CHECK_MATH_FUNC([atan2])
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GCC_CHECK_MATH_FUNC([atan2l])
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GCC_CHECK_MATH_FUNC([atanf])
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GCC_CHECK_MATH_FUNC([atan])
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GCC_CHECK_MATH_FUNC([atanl])
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GCC_CHECK_MATH_FUNC([atanhf])
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GCC_CHECK_MATH_FUNC([atanh])
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GCC_CHECK_MATH_FUNC([atanhl])
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GCC_CHECK_MATH_FUNC([cargf])
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GCC_CHECK_MATH_FUNC([carg])
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GCC_CHECK_MATH_FUNC([cargl])
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GCC_CHECK_MATH_FUNC([ceilf])
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GCC_CHECK_MATH_FUNC([ceil])
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GCC_CHECK_MATH_FUNC([ceill])
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GCC_CHECK_MATH_FUNC([copysignf])
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GCC_CHECK_MATH_FUNC([copysign])
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GCC_CHECK_MATH_FUNC([copysignl])
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GCC_CHECK_MATH_FUNC([cosf])
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GCC_CHECK_MATH_FUNC([cos])
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GCC_CHECK_MATH_FUNC([cosl])
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GCC_CHECK_MATH_FUNC([ccosf])
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GCC_CHECK_MATH_FUNC([ccos])
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GCC_CHECK_MATH_FUNC([ccosl])
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GCC_CHECK_MATH_FUNC([coshf])
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GCC_CHECK_MATH_FUNC([cosh])
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GCC_CHECK_MATH_FUNC([coshl])
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GCC_CHECK_MATH_FUNC([ccoshf])
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GCC_CHECK_MATH_FUNC([ccosh])
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GCC_CHECK_MATH_FUNC([ccoshl])
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GCC_CHECK_MATH_FUNC([expf])
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GCC_CHECK_MATH_FUNC([exp])
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GCC_CHECK_MATH_FUNC([expl])
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GCC_CHECK_MATH_FUNC([cexpf])
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GCC_CHECK_MATH_FUNC([cexp])
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GCC_CHECK_MATH_FUNC([cexpl])
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GCC_CHECK_MATH_FUNC([fabsf])
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GCC_CHECK_MATH_FUNC([fabs])
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GCC_CHECK_MATH_FUNC([fabsl])
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GCC_CHECK_MATH_FUNC([cabsf])
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GCC_CHECK_MATH_FUNC([cabs])
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GCC_CHECK_MATH_FUNC([cabsl])
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GCC_CHECK_MATH_FUNC([floorf])
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GCC_CHECK_MATH_FUNC([floor])
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GCC_CHECK_MATH_FUNC([floorl])
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GCC_CHECK_MATH_FUNC([fmodf])
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GCC_CHECK_MATH_FUNC([fmod])
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GCC_CHECK_MATH_FUNC([fmodl])
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GCC_CHECK_MATH_FUNC([frexpf])
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GCC_CHECK_MATH_FUNC([frexp])
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GCC_CHECK_MATH_FUNC([frexpl])
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GCC_CHECK_MATH_FUNC([hypotf])
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GCC_CHECK_MATH_FUNC([hypot])
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GCC_CHECK_MATH_FUNC([hypotl])
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GCC_CHECK_MATH_FUNC([ldexpf])
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GCC_CHECK_MATH_FUNC([ldexp])
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GCC_CHECK_MATH_FUNC([ldexpl])
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GCC_CHECK_MATH_FUNC([logf])
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GCC_CHECK_MATH_FUNC([log])
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GCC_CHECK_MATH_FUNC([logl])
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GCC_CHECK_MATH_FUNC([clogf])
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GCC_CHECK_MATH_FUNC([clog])
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GCC_CHECK_MATH_FUNC([clogl])
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GCC_CHECK_MATH_FUNC([log10f])
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GCC_CHECK_MATH_FUNC([log10])
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GCC_CHECK_MATH_FUNC([log10l])
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GCC_CHECK_MATH_FUNC([clog10f])
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GCC_CHECK_MATH_FUNC([clog10])
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GCC_CHECK_MATH_FUNC([clog10l])
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GCC_CHECK_MATH_FUNC([nextafterf])
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GCC_CHECK_MATH_FUNC([nextafter])
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GCC_CHECK_MATH_FUNC([nextafterl])
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GCC_CHECK_MATH_FUNC([powf])
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GCC_CHECK_MATH_FUNC([pow])
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GCC_CHECK_MATH_FUNC([powl])
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GCC_CHECK_MATH_FUNC([cpowf])
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GCC_CHECK_MATH_FUNC([cpow])
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GCC_CHECK_MATH_FUNC([cpowl])
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GCC_CHECK_MATH_FUNC([roundf])
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GCC_CHECK_MATH_FUNC([round])
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GCC_CHECK_MATH_FUNC([roundl])
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GCC_CHECK_MATH_FUNC([lroundf])
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GCC_CHECK_MATH_FUNC([lround])
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GCC_CHECK_MATH_FUNC([lroundl])
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GCC_CHECK_MATH_FUNC([llroundf])
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GCC_CHECK_MATH_FUNC([llround])
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GCC_CHECK_MATH_FUNC([llroundl])
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GCC_CHECK_MATH_FUNC([scalbnf])
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GCC_CHECK_MATH_FUNC([scalbn])
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GCC_CHECK_MATH_FUNC([scalbnl])
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GCC_CHECK_MATH_FUNC([sinf])
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GCC_CHECK_MATH_FUNC([sin])
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GCC_CHECK_MATH_FUNC([sinl])
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GCC_CHECK_MATH_FUNC([csinf])
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GCC_CHECK_MATH_FUNC([csin])
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GCC_CHECK_MATH_FUNC([csinl])
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GCC_CHECK_MATH_FUNC([sinhf])
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GCC_CHECK_MATH_FUNC([sinh])
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GCC_CHECK_MATH_FUNC([sinhl])
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GCC_CHECK_MATH_FUNC([csinhf])
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GCC_CHECK_MATH_FUNC([csinh])
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GCC_CHECK_MATH_FUNC([csinhl])
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GCC_CHECK_MATH_FUNC([sqrtf])
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GCC_CHECK_MATH_FUNC([sqrt])
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GCC_CHECK_MATH_FUNC([sqrtl])
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GCC_CHECK_MATH_FUNC([csqrtf])
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GCC_CHECK_MATH_FUNC([csqrt])
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GCC_CHECK_MATH_FUNC([csqrtl])
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GCC_CHECK_MATH_FUNC([tanf])
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GCC_CHECK_MATH_FUNC([tan])
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GCC_CHECK_MATH_FUNC([tanl])
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GCC_CHECK_MATH_FUNC([ctanf])
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GCC_CHECK_MATH_FUNC([ctan])
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GCC_CHECK_MATH_FUNC([ctanl])
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GCC_CHECK_MATH_FUNC([tanhf])
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GCC_CHECK_MATH_FUNC([tanh])
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GCC_CHECK_MATH_FUNC([tanhl])
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GCC_CHECK_MATH_FUNC([ctanhf])
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GCC_CHECK_MATH_FUNC([ctanh])
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GCC_CHECK_MATH_FUNC([ctanhl])
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GCC_CHECK_MATH_FUNC([truncf])
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GCC_CHECK_MATH_FUNC([trunc])
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GCC_CHECK_MATH_FUNC([truncl])
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GCC_CHECK_MATH_FUNC([erff])
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GCC_CHECK_MATH_FUNC([erf])
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GCC_CHECK_MATH_FUNC([erfl])
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GCC_CHECK_MATH_FUNC([erfcf])
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GCC_CHECK_MATH_FUNC([erfc])
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GCC_CHECK_MATH_FUNC([erfcl])
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GCC_CHECK_MATH_FUNC([j0f])
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GCC_CHECK_MATH_FUNC([j0])
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GCC_CHECK_MATH_FUNC([j0l])
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GCC_CHECK_MATH_FUNC([j1f])
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GCC_CHECK_MATH_FUNC([j1])
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GCC_CHECK_MATH_FUNC([j1l])
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|
GCC_CHECK_MATH_FUNC([jnf])
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|
GCC_CHECK_MATH_FUNC([jn])
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|
GCC_CHECK_MATH_FUNC([jnl])
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GCC_CHECK_MATH_FUNC([y0f])
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GCC_CHECK_MATH_FUNC([y0])
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GCC_CHECK_MATH_FUNC([y0l])
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GCC_CHECK_MATH_FUNC([y1f])
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GCC_CHECK_MATH_FUNC([y1])
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|
GCC_CHECK_MATH_FUNC([y1l])
|
|
GCC_CHECK_MATH_FUNC([ynf])
|
|
GCC_CHECK_MATH_FUNC([yn])
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|
GCC_CHECK_MATH_FUNC([ynl])
|
|
GCC_CHECK_MATH_FUNC([tgamma])
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|
GCC_CHECK_MATH_FUNC([tgammaf])
|
|
GCC_CHECK_MATH_FUNC([tgammal])
|
|
GCC_CHECK_MATH_FUNC([lgamma])
|
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GCC_CHECK_MATH_FUNC([lgammaf])
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GCC_CHECK_MATH_FUNC([lgammal])
|
|
|
|
# Check for GFORTRAN_C99_1.1 funcs
|
|
GCC_CHECK_MATH_FUNC([cacos])
|
|
GCC_CHECK_MATH_FUNC([cacosf])
|
|
GCC_CHECK_MATH_FUNC([cacosh])
|
|
GCC_CHECK_MATH_FUNC([cacoshf])
|
|
GCC_CHECK_MATH_FUNC([cacoshl])
|
|
GCC_CHECK_MATH_FUNC([cacosl])
|
|
GCC_CHECK_MATH_FUNC([casin])
|
|
GCC_CHECK_MATH_FUNC([casinf])
|
|
GCC_CHECK_MATH_FUNC([casinh])
|
|
GCC_CHECK_MATH_FUNC([casinhf])
|
|
GCC_CHECK_MATH_FUNC([casinhl])
|
|
GCC_CHECK_MATH_FUNC([casinl])
|
|
GCC_CHECK_MATH_FUNC([catan])
|
|
GCC_CHECK_MATH_FUNC([catanf])
|
|
GCC_CHECK_MATH_FUNC([catanh])
|
|
GCC_CHECK_MATH_FUNC([catanhf])
|
|
GCC_CHECK_MATH_FUNC([catanhl])
|
|
GCC_CHECK_MATH_FUNC([catanl])
|
|
|
|
# On AIX, clog is present in libm as __clog
|
|
AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
|
|
|
|
# Check whether the system has a working stat()
|
|
LIBGFOR_CHECK_WORKING_STAT
|
|
|
|
# Check whether __mingw_snprintf() is present
|
|
LIBGFOR_CHECK_MINGW_SNPRINTF
|
|
|
|
# Check whether libquadmath should be used
|
|
AC_ARG_ENABLE(libquadmath-support,
|
|
AS_HELP_STRING([--disable-libquadmath-support],
|
|
[disable libquadmath support for Fortran]),
|
|
ENABLE_LIBQUADMATH_SUPPORT=$enableval,
|
|
ENABLE_LIBQUADMATH_SUPPORT=yes)
|
|
enable_libquadmath_support=
|
|
if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
|
|
enable_libquadmath_support=no
|
|
fi
|
|
|
|
# Check whether we have a __float128 type, depends on enable_libquadmath_support
|
|
LIBGFOR_CHECK_FLOAT128
|
|
|
|
# Check for GNU libc feenableexcept
|
|
AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
|
|
|
|
# At least for glibc, clock_gettime is in librt. But don't
|
|
# pull that in if it still doesn't give us the function we want. This
|
|
# test is copied from libgomp, and modified to not link in -lrt as
|
|
# libgfortran calls clock_gettime via a weak reference if it's found
|
|
# in librt.
|
|
if test $ac_cv_func_clock_gettime = no; then
|
|
AC_CHECK_LIB(rt, clock_gettime,
|
|
[AC_DEFINE(HAVE_CLOCK_GETTIME_LIBRT, 1,
|
|
[Define to 1 if you have the `clock_gettime' function in librt.])])
|
|
fi
|
|
|
|
# Check for SysV fpsetmask
|
|
LIBGFOR_CHECK_FPSETMASK
|
|
AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[#include <ieeefp.h>]])
|
|
AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[#include <ieeefp.h>]])
|
|
|
|
# Check for AIX fp_trap and fp_enable
|
|
AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
|
|
AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
|
|
|
|
# Runs configure.host to set up necessary host-dependent shell variables.
|
|
# We then display a message about it, and propagate them through the
|
|
# build chain.
|
|
. ${srcdir}/configure.host
|
|
AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
|
|
FPU_HOST_HEADER=config/${fpu_host}.h
|
|
AC_SUBST(FPU_HOST_HEADER)
|
|
|
|
# Some targets require additional compiler options for IEEE compatibility.
|
|
IEEE_FLAGS="${ieee_flags}"
|
|
AC_SUBST(IEEE_FLAGS)
|
|
|
|
|
|
# Check for POSIX getpwuid_r
|
|
#
|
|
# There are two versions of getpwuid_r, the POSIX one with 5
|
|
# arguments, and another one with 4 arguments used by at least HP-UX
|
|
# 10.2.
|
|
if test "$ac_cv_func_getpwuid_r" = "yes"; then
|
|
AC_CACHE_CHECK([POSIX version of getpwuid_r with 5 arguments], libgfor_cv_posix_getpwuid_r, [
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <pwd.h>], [
|
|
getpwuid_r(0, NULL, NULL, 0, NULL);
|
|
])], [libgfor_cv_posix_getpwuid_r="yes"], [libgfor_cv_posix_getpwuid_r="no"])])
|
|
fi
|
|
if test "$libgfor_cv_posix_getpwuid_r" = "yes"; then
|
|
AC_DEFINE([HAVE_POSIX_GETPWUID_R], [1], [Define to 1 if we have POSIX getpwuid_r which takes 5 arguments.])
|
|
fi
|
|
|
|
|
|
# Check out attribute support.
|
|
LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
|
|
LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT
|
|
LIBGFOR_CHECK_ATTRIBUTE_ALIAS
|
|
|
|
# Check out sync builtins support.
|
|
LIBGFOR_CHECK_SYNC_FETCH_AND_ADD
|
|
|
|
# Check out #pragma weak.
|
|
LIBGFOR_GTHREAD_WEAK
|
|
|
|
# Various other checks on target
|
|
LIBGFOR_CHECK_UNLINK_OPEN_FILE
|
|
|
|
# Check whether line terminator is LF or CRLF
|
|
LIBGFOR_CHECK_CRLF
|
|
|
|
# Check whether we have _Unwind_GetIPInfo for backtrace
|
|
GCC_CHECK_UNWIND_GETIPINFO
|
|
|
|
AC_CACHE_SAVE
|
|
|
|
if test ${multilib} = yes; then
|
|
multilib_arg="--enable-multilib"
|
|
else
|
|
multilib_arg=
|
|
fi
|
|
|
|
# Write our Makefile and spec file.
|
|
AC_CONFIG_FILES([
|
|
Makefile
|
|
libgfortran.spec
|
|
])
|
|
AC_OUTPUT
|