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| author | Alex Smith <alex.smith@warpsharp.info> | 2015-09-21 00:41:36 -0400 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-09-23 01:11:53 +0200 |
| commit | 91b668acd6decec0a6f8d20bf56e2644f96adcb9 (patch) | |
| tree | a0a26a812d05bc56bee5730b82a27f1ad3f71761 | |
| parent | 0544c95fd6d0e3c1072554f9d13baf45af7fbf56 (diff) | |
| download | ffmpeg-91b668acd6decec0a6f8d20bf56e2644f96adcb9.tar.gz | |
configure: Force mingw's ld to keep the reloc section
Binutils will always strip the relocation information from executable
files even if it needs it (dynamicbase/ASLR). We can work around this
by using the pic-executable flag combined with setting the correct entry
point since apparently ld forgets what that should be. This problem
affects both 32 and 64-bit mingw-w64.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rwxr-xr-x | configure | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -4392,6 +4392,16 @@ case $target_os in objformat="win32" ranlib=: enable dos_paths + # Lets work around some stupidity in binutils. + # ld will strip relocations from executables even though we need them + # for dynamicbase (ASLR). Using -pie does retain the reloc section + # however ld then forgets what the entry point should be (oops) so we + # have to manually (re)set it. + if enabled x86_32; then + add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup + elif enabled x86_64; then + add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup + fi ;; win32|win64) disable symver |