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author | Shi, Steven <steven.shi@intel.com> | 2016-08-19 10:46:20 +0800 |
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committer | Liming Gao <liming.gao@intel.com> | 2016-08-19 12:58:37 +0800 |
commit | 6d732bbbc2b0463f367ceca381cb1861d52cf735 (patch) | |
tree | 0d8dd65701ceda156d2cfb5df832ab28518299ab /IntelFsp2Pkg | |
parent | 00bcb5c27a5bb781099482c5763937334be91e76 (diff) | |
download | edk2-platforms-6d732bbbc2b0463f367ceca381cb1861d52cf735.tar.xz |
BaseTools-CLANG38: Add -O3 in DLINK2 flag
CLANG38 build fail after CC_FLAG is added in the link rule.
This failure is because the CLANG38 enable the LTO through LLVMgold.so
linker plugin, but the LLVMgold.so plugin cannot accept the clang -Oz
CC flag as build option. After CC_FLAG is added in the link rule,
the LLVMgold.so plugin reports linking error. LLVMgold.so only accept
-O0 ~ -O3, and you can see it in the LLVM gold plugin source code
in below:
http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_380/final/tools/gold/
gold-plugin.cpp line173:
if (opt[1] < '0' || opt[1] > '3')
message(LDPL_FATAL, "Optimization level must be between 0 and 3");
Add -O3 in the *_CLANG38_*_DLINK2_FLAGS to override the -Oz flag in
*_CLANG38_*_CC_FLAGS to pass LLVMgold.so linking.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Steven Shi <steven.shi@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Diffstat (limited to 'IntelFsp2Pkg')
0 files changed, 0 insertions, 0 deletions