[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
+# Build with intermodule optimisations
+AC_MSG_CHECKING([for --enable-intermodule])
+AC_ARG_ENABLE(intermodule,
+[ --enable-intermodule build the library in one step],
+[case "$enable_intermodule" in
+ yes) onestep="-onestep";;
+ *) onestep="";;
+esac],
+[onestep=""])
+AC_MSG_RESULT($enable_intermodule)
+AM_CONDITIONAL(onestep,[test x$onestep = x-onestep])
+AC_SUBST(onestep)
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
#
# Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
if test "x$GCC" = "xyes"; then
- AM_FCFLAGS="-I . -Wall -fno-repack-arrays -fno-underscoring"
+ AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
## We like to use C99 routines when available. This makes sure that
## __STDC_VERSION__ is set such that libc includes make them available.
AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
fi
AC_SUBST(AM_FCFLAGS)
AC_SUBST(AM_CFLAGS)
+AC_SUBST(CFLAGS)
+
+# Check for symbol versioning (copied from libssp).
+AC_MSG_CHECKING([whether symbol versioning is supported])
+cat > conftest.map <<EOF
+FOO_1.0 {
+ global: *foo*; bar; local: *;
+};
+EOF
+save_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+AC_TRY_LINK([int foo;],[],[gfortran_use_symver=yes],[gfortran_use_symver=no])
+LDFLAGS="$save_LDFLAGS"
+AC_MSG_RESULT($gfortran_use_symver)
+AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" = xyes])
+
+# Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
+# similarly to how libstdc++ does it
+ac_test_CFLAGS="${CFLAGS+set}"
+ac_save_CFLAGS="$CFLAGS"
+
+# 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])
+if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+else
+ # this is the suspicious part
+ CFLAGS=""
+fi
+if test x"$ac_fdsections" = x"yes"; then
+ SECTION_FLAGS='-ffunction-sections -fdata-sections'
+fi
+AC_MSG_RESULT($ac_fdsections)
+AC_SUBST(SECTION_FLAGS)
# Find other programs we need.
AC_CHECK_TOOL(AS, as)
esac
AC_SUBST(extra_ldflags_libgfortran)
+# We need a working compiler at that point, otherwise give a clear
+# error message and bail out.
+LIBGFOR_WORKING_GFORTRAN
+
AC_SYS_LARGEFILE
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_HEADER_TIME
+AC_HAVE_HEADERS(stdio.h stdlib.h string.h unistd.h signal.h stdarg.h)
+AC_CHECK_HEADERS(time.h sys/time.h sys/times.h sys/resource.h)
AC_CHECK_HEADERS(sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h)
-AC_CHECK_HEADERS(fenv.h fptrap.h float.h)
+AC_CHECK_HEADERS(fenv.h fptrap.h float.h execinfo.h pwd.h)
AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])])
GCC_HEADER_STDINT(gstdint.h)
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(wait setmode getrlimit)
+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)
+
+# Check for glibc backtrace functions
+AC_CHECK_FUNCS(backtrace backtrace_symbols)
# Check for types
AC_CHECK_TYPES([intptr_t])
+AC_CHECK_TYPES([uintptr_t])
# 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],[getppid],[AC_DEFINE([HAVE_GETPPID],[1],[libc includes getppid])])
AC_CHECK_LIB([c],[getuid],[AC_DEFINE([HAVE_GETUID],[1],[libc includes getuid])])
+AC_CHECK_LIB([c],[geteuid],[AC_DEFINE([HAVE_GETEUID],[1],[libc includes geteuid])])
# 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],[acos],[AC_DEFINE([HAVE_ACOS],[1],[libm includes acos])])
AC_CHECK_LIB([m],[acosl],[AC_DEFINE([HAVE_ACOSL],[1],[libm includes acosl])])
AC_CHECK_LIB([m],[roundf],[AC_DEFINE([HAVE_ROUNDF],[1],[libm includes roundf])])
AC_CHECK_LIB([m],[round],[AC_DEFINE([HAVE_ROUND],[1],[libm includes round])])
AC_CHECK_LIB([m],[roundl],[AC_DEFINE([HAVE_ROUNDL],[1],[libm includes roundl])])
+AC_CHECK_LIB([m],[lroundf],[AC_DEFINE([HAVE_LROUNDF],[1],[libm includes lroundf])])
+AC_CHECK_LIB([m],[lround],[AC_DEFINE([HAVE_LROUND],[1],[libm includes lround])])
+AC_CHECK_LIB([m],[lroundl],[AC_DEFINE([HAVE_LROUNDL],[1],[libm includes lroundl])])
+AC_CHECK_LIB([m],[llroundf],[AC_DEFINE([HAVE_LLROUNDF],[1],[libm includes llroundf])])
+AC_CHECK_LIB([m],[llround],[AC_DEFINE([HAVE_LLROUND],[1],[libm includes llround])])
+AC_CHECK_LIB([m],[llroundl],[AC_DEFINE([HAVE_LLROUNDL],[1],[libm includes llroundl])])
AC_CHECK_LIB([m],[scalbnf],[AC_DEFINE([HAVE_SCALBNF],[1],[libm includes scalbnf])])
AC_CHECK_LIB([m],[scalbn],[AC_DEFINE([HAVE_SCALBN],[1],[libm includes scalbn])])
AC_CHECK_LIB([m],[scalbnl],[AC_DEFINE([HAVE_SCALBNL],[1],[libm includes scalbnl])])
AC_CHECK_LIB([m],[ynf],[AC_DEFINE([HAVE_YNF],[1],[libm includes ynf])])
AC_CHECK_LIB([m],[yn],[AC_DEFINE([HAVE_YN],[1],[libm includes yn])])
AC_CHECK_LIB([m],[ynl],[AC_DEFINE([HAVE_YNL],[1],[libm includes ynl])])
+AC_CHECK_LIB([m],[tgamma],[AC_DEFINE([HAVE_TGAMMA],[1],[libm includes tgamma])])
+AC_CHECK_LIB([m],[tgammaf],[AC_DEFINE([HAVE_TGAMMAF],[1],[libm includes tgammaf])])
+AC_CHECK_LIB([m],[tgammal],[AC_DEFINE([HAVE_TGAMMAL],[1],[libm includes tgammal])])
+AC_CHECK_LIB([m],[lgamma],[AC_DEFINE([HAVE_LGAMMA],[1],[libm includes lgamma])])
+AC_CHECK_LIB([m],[lgammaf],[AC_DEFINE([HAVE_LGAMMAF],[1],[libm includes lgammaf])])
+AC_CHECK_LIB([m],[lgammal],[AC_DEFINE([HAVE_LGAMMAL],[1],[libm includes lgammal])])
# 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
-# Fallback in case isfinite is not available.
-AC_CHECK_LIB([m],[finite],[AC_DEFINE([HAVE_FINITE],[1],[libm includes finite])])
+# Check whether __mingw_snprintf() is present
+LIBGFOR_CHECK_MINGW_SNPRINTF
+
+# Check for a broken powf implementation
+LIBGFOR_CHECK_FOR_BROKEN_POWF
# Check for GNU libc feenableexcept
AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
FPU_HOST_HEADER=config/${fpu_host}.h
AC_SUBST(FPU_HOST_HEADER)
-# 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
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