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 ],
+AS_HELP_STRING([--enable-version-specific-runtime-libs],
+ [specify that runtime libraries should be installed in a compiler-specific directory]),
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
# Build with intermodule optimisations
AC_MSG_CHECKING([for --enable-intermodule])
AC_ARG_ENABLE(intermodule,
-[ --enable-intermodule build the library in one step],
+AS_HELP_STRING([--enable-intermodule],[build the library in one step]),
[case "$enable_intermodule" in
yes) onestep="-onestep";;
*) onestep="";;
LIBGFOR_IS_NATIVE=true
fi
+AC_USE_SYSTEM_EXTENSIONS
+
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
+# Create a spec file, so that compile/link tests don't fail
+test -f libgfortran.spec || touch libgfortran.spec
+
# Check the compiler.
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# Check for symbol versioning (copied from libssp).
AC_MSG_CHECKING([whether symbol versioning is supported])
-save_LDFLAGS="$LDFLAGS"
-LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-cat > conftest.map <<EOF
+AC_ARG_ENABLE(symvers,
+AS_HELP_STRING([--disable-symvers],
+ [disable symbol versioning for libgfortran]),
+gfortran_use_symver=$enableval,
+gfortran_use_symver=yes)
+if test "x$gfortran_use_symver" = xyes; then
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+ cat > conftest.map <<EOF
FOO_1.0 {
global: *foo*; bar; local: *;
};
EOF
-AC_TRY_LINK([int foo;],[],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
-if test x$gfortran_use_symver = xno; then
- LDFLAGS="$save_LDFLAGS"
- LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
- # Sun ld cannot handle wildcards and treats all entries as undefined.
- cat > conftest.map <<EOF
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
+ if test x$gfortran_use_symver = xno; then
+ case "$target_os" in
+ solaris2*)
+ LDFLAGS="$save_LDFLAGS"
+ LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+ # Sun ld cannot handle wildcards and treats all entries as undefined.
+ cat > conftest.map <<EOF
FOO_1.0 {
global: foo; local: *;
};
EOF
- AC_TRY_LINK([int foo;],[],[gfortran_use_symver=sun],[gfortran_use_symver=no])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no])
+ ;;
+ esac
+ fi
+ LDFLAGS="$save_LDFLAGS"
fi
-LDFLAGS="$save_LDFLAGS"
AC_MSG_RESULT($gfortran_use_symver)
AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
# Check for -ffunction-sections -fdata-sections
AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
CFLAGS='-Werror -ffunction-sections -fdata-sections'
-AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])], [ac_fdsections=yes], [ac_fdsections=no])
if test "$ac_test_CFLAGS" = set; then
CFLAGS="$ac_save_CFLAGS"
else
#AC_MSG_NOTICE([====== Starting libtool configuration])
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL
+ACX_LT_HOST_FLAGS
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
# Check for library functions.
AC_CHECK_FUNCS(getrusage times mkstemp strtof strtold snprintf ftruncate chsize)
AC_CHECK_FUNCS(chdir strerror getlogin gethostname kill link symlink perror)
-AC_CHECK_FUNCS(sleep time ttyname signal alarm ctime clock access fork execl)
+AC_CHECK_FUNCS(sleep time ttyname signal alarm clock access fork execl)
AC_CHECK_FUNCS(wait setmode execvp pipe dup2 close fdopen strcasestr getrlimit)
AC_CHECK_FUNCS(gettimeofday stat fstat lstat getpwuid vsnprintf dup getcwd)
-AC_CHECK_FUNCS(localtime_r gmtime_r)
+AC_CHECK_FUNCS(localtime_r gmtime_r strerror_r getpwuid_r ttyname_r)
+AC_CHECK_FUNCS(clock_gettime strftime)
# Check for glibc backtrace functions
AC_CHECK_FUNCS(backtrace backtrace_symbols)
# On AIX, clog is present in libm as __clog
AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
-# Check for a isfinite macro that works on long doubles.
-LIBGFOR_CHECK_FOR_BROKEN_ISFINITE
-
-# Check for a isnan macro that works on long doubles.
-LIBGFOR_CHECK_FOR_BROKEN_ISNAN
-
-# Check for a fpclassify macro that works on long doubles.
-LIBGFOR_CHECK_FOR_BROKEN_FPCLASSIFY
-
# Check whether the system has a working stat()
LIBGFOR_CHECK_WORKING_STAT
# Check for a broken powf implementation
LIBGFOR_CHECK_FOR_BROKEN_POWF
+# Check whether libquadmath should be used
+AC_ARG_ENABLE(libquadmath-support,
+AS_HELP_STRING([--disable-libquadmath-support],
+ [disable libquadmath support for Fortran]),
+ENABLE_LIBQUADMATH_SUPPORT=$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 test $ac_cv_func_clock_gettime = no; then
+ AC_CHECK_LIB(rt, clock_gettime,
+ [AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
+ [Define to 1 if you have the `clock_gettime' function.])])
+fi
+
# Check for SysV fpsetmask
LIBGFOR_CHECK_FPSETMASK
IEEE_FLAGS="${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
multilib_arg=
fi
-# Write our Makefile.
-AC_CONFIG_FILES(Makefile)
+# Write our Makefile and spec file.
+AC_CONFIG_FILES([
+Makefile
+libgfortran.spec
+])
AC_OUTPUT
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