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Merge pull request #28402 from Valentactive/add-thinlto-support-x11

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Add option to use ThinLTO
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Rémi Verschelde 2019-04-25 22:23:31 +02:00 committed by GitHub
commit 7e65a11bcf
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1 changed files with 12 additions and 3 deletions
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13
platform/x11/detect.py
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@ -59,6 +59,7 @@ def get_opts():
return [
BoolVariable('use_llvm', 'Use the LLVM compiler', False),
BoolVariable('use_lld', 'Use the LLD linker', False),
BoolVariable('use_thinlto', 'Use ThinLTO', False),
BoolVariable('use_static_cpp', 'Link libgcc and libstdc++ statically for better portability', False),
BoolVariable('use_ubsan', 'Use LLVM/GCC compiler undefined behavior sanitizer (UBSAN)', False),
BoolVariable('use_asan', 'Use LLVM/GCC compiler address sanitizer (ASAN))', False),
@ -136,6 +137,9 @@ def configure(env):
if env['use_lld']:
if env['use_llvm']:
env.Append(LINKFLAGS=['-fuse-ld=lld'])
if env['use_thinlto']:
# A convenience so you don't need to write use_lto too when using SCons
env['use_lto'] = True
else:
print("Using LLD with GCC is not supported yet, try compiling with 'use_llvm=yes'.")
sys.exit(255)
@ -156,12 +160,17 @@ def configure(env):
env.Append(LINKFLAGS=['-fsanitize=leak'])
if env['use_lto']:
env.Append(CCFLAGS=['-flto'])
if not env['use_llvm'] and env.GetOption("num_jobs") > 1:
env.Append(CCFLAGS=['-flto'])
env.Append(LINKFLAGS=['-flto=' + str(env.GetOption("num_jobs"))])
else:
if env['use_lld'] and env['use_thinlto']:
env.Append(CCFLAGS=['-flto=thin'])
env.Append(LINKFLAGS=['-flto=thin'])
else:
env.Append(CCFLAGS=['-flto'])
env.Append(LINKFLAGS=['-flto'])
if not env['use_llvm']:
env['RANLIB'] = 'gcc-ranlib'
env['AR'] = 'gcc-ar'