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| author | Alex Smith <alex.smith@warpsharp.info> | 2015-09-26 02:43:23 -0400 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2015-09-28 10:15:49 +0200 |
| commit | a58c22d61260941fc651add73836882d5b112fdb (patch) | |
| tree | 5bb4d36b7b973d2ece112027d4e8ccafc55a16f7 /configure | |
| parent | 238ca2d723605bd5756181087551cf7dcd46076b (diff) | |
| download | ffmpeg-a58c22d61260941fc651add73836882d5b112fdb.tar.gz | |
configure: Support for HEASLR on mingw targets
The appropriate flag for HEASLR (--high-entropy-va) was added in
binutils 2.25.
Also set the image base >4GB so higher entropy gets applied to image
base randomization when used with HEASLR (8 -> 17 bits of
randomization). Windows does this for compatibility because of "latent
pointer truncation issues".
Signed-off-by: Alex Smith <alex.smith@warpsharp.info>
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -4400,6 +4400,10 @@ case $target_os in add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup elif enabled x86_64; then add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup + check_ldflags -Wl,--high-entropy-va # binutils 2.25 + # Set image base >4GB for extra entropy with HEASLR + add_ldexeflags -Wl,--image-base,0x140000000 + append SHFLAGS -Wl,--image-base,0x180000000 fi ;; win32|win64) |