re PR libfortran/20766 ([darwin] - run time error when calling fortran subroutine from c)

2005-04-07  Andrew Pinski  <pinskia@physics.uc.edu>

        PR libfortran/20766
        * configure.ac (extra_ldflags_libgfortran): Set for *-darwin* to
        "-Wl,-single_module".
        * configure: Regenerate.
        * Makefile.am (libgfortran_la_LDFLAGS): Add extra_ldflags_libgfortran.
        * Makefile.in: Regenerate.

From-SVN: r97804

libgfortran/ChangeLog

+2005-04-07  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR libfortran/20766
+	* configure.ac (extra_ldflags_libgfortran): Set for *-darwin* to
+	"-Wl,-single_module".
+	* configure: Regenerate.
+	* Makefile.am (libgfortran_la_LDFLAGS): Add extra_ldflags_libgfortran.
+	* Makefile.in: Regenerate.
+
 2005-04-05  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
 	PR libfortran/20755

libgfortran/Makefile.am

@@ -10,7 +10,7 @@ gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
 
 toolexeclib_LTLIBRARIES = libgfortran.la libgfortranbegin.la
 
-libgfortran_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version` -lm
+libgfortran_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version` -lm $(extra_ldflags_libgfortran)
 
 ## This should really go in the compiler lib dir, not the system lib dir.
 libgfortranbegin_la_SOURCES = fmain.c

libgfortran/Makefile.in

@@ -266,6 +266,7 @@ datadir = @datadir@
 enable_shared = @enable_shared@
 enable_static = @enable_static@
 exec_prefix = @exec_prefix@
+extra_ldflags_libgfortran = @extra_ldflags_libgfortran@
 host = @host@
 host_alias = @host_alias@
 host_cpu = @host_cpu@
@@ -297,7 +298,7 @@ AM_CFLAGS = -std=gnu99
 ACLOCAL_AMFLAGS = -I ../config
 gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
 toolexeclib_LTLIBRARIES = libgfortran.la libgfortranbegin.la
-libgfortran_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version` -lm
+libgfortran_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version` -lm $(extra_ldflags_libgfortran)
 libgfortranbegin_la_SOURCES = fmain.c
 libgfortranbegin_la_LDFLAGS = -static
 AM_CPPFLAGS = -iquote$(srcdir)/io

libgfortran/configure.ac

@@ -138,6 +138,15 @@ 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