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| author | Peter Rosin <peda@lysator.liu.se> | 2014-05-02 14:51:02 +0200 |
|---|---|---|
| committer | Peter Rosin <peda@lysator.liu.se> | 2014-05-02 14:52:30 +0200 |
| commit | 5911665520a53415bafd8bb6da9989b5fe25df80 (patch) | |
| tree | 50746c8864e13ef4426cdca7b9bc5a09d0daf8bf | |
| parent | 053df7eb31d21c6d6dbe54c44f42009efec9d0c9 (diff) | |
| download | libtool-5911665520a53415bafd8bb6da9989b5fe25df80.tar.gz | |
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 <peda@lysator.liu.se>
| -rw-r--r-- | 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 f8e0f5fb..3a0fb0c5 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 |