[SCM] GNU Libtool branch, master, updated. v2.4.2.444-29-g5911665

[Peter Rosin]

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- Log -----------------------------------------------------------------
commit 5911665520a53415bafd8bb6da9989b5fe25df80
Author: Peter Rosin <address@hidden>
Date:   Fri May 2 14:51:02 2014 +0200

    libtool: prevent lto from stripping the magic cookie from the cwrapper
    
    Whole program optimization may remove unused symbols unless told they
    are really needed. Fixes sr #108559 reported by LRN.
    
    * build-aux/ltmain.in (func_emit_cwrapperexe_src:MAGIC_EXE): Try to ensure
    that the magic cookie is preserved.
    
    Signed-off-by: Peter Rosin <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 build-aux/ltmain.in |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index f8e0f5f..3a0fb0c 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -3738,7 +3738,12 @@ void lt_dump_script (FILE *f);
 EOF
 
            cat <<EOF
-volatile const char * MAGIC_EXE = "$magic_exe";
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
+# define externally_visible volatile
+#else
+# define externally_visible __attribute__((externally_visible)) volatile
+#endif
+externally_visible const char * MAGIC_EXE = "$magic_exe";
 const char * LIB_PATH_VARNAME = "$shlibpath_var";
 EOF
 


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