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Fix gcc lto

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This repairs LTO on X11 and adds it to MingW targets. The difference in
linktime is substantial, but runtime performance is quite a bit better.
This commit is contained in:
Hein-Pieter van Braam 2017-09-23 22:55:26 +02:00
parent 480b417c5b
commit 43757fcc85
2 changed files with 10 additions and 2 deletions
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9
platform/windows/detect.py
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@ -64,6 +64,7 @@ def get_opts():
return [ return [
('mingw_prefix_32', 'MinGW prefix (Win32)', mingw32), ('mingw_prefix_32', 'MinGW prefix (Win32)', mingw32),
('mingw_prefix_64', 'MinGW prefix (Win64)', mingw64), ('mingw_prefix_64', 'MinGW prefix (Win64)', mingw64),
('use_lto', 'Use link time optimization (when using MingW)', 'no'),
('debug_symbols', 'Add debug symbols to release version (yes/no/full)', 'yes') ('debug_symbols', 'Add debug symbols to release version (yes/no/full)', 'yes')
] ]
@ -256,11 +257,15 @@ def configure(env):
env["CC"] = mingw_prefix + "gcc" env["CC"] = mingw_prefix + "gcc"
env['AS'] = mingw_prefix + "as" env['AS'] = mingw_prefix + "as"
env['CXX'] = mingw_prefix + "g++" env['CXX'] = mingw_prefix + "g++"
env['AR'] = mingw_prefix + "ar" env['AR'] = mingw_prefix + "gcc-ar"
env['RANLIB'] = mingw_prefix + "ranlib" env['RANLIB'] = mingw_prefix + "gcc-ranlib"
env['LD'] = mingw_prefix + "g++" env['LD'] = mingw_prefix + "g++"
env["x86_libtheora_opt_gcc"] = True env["x86_libtheora_opt_gcc"] = True
if (env["use_lto"] == "yes"):
env.Append(CCFLAGS=['-flto'])
env.Append(LINKFLAGS=['-flto'])
## Compile flags ## Compile flags
env.Append(CCFLAGS=['-DWINDOWS_ENABLED', '-mwindows']) env.Append(CCFLAGS=['-DWINDOWS_ENABLED', '-mwindows'])

3
platform/x11/detect.py
View file

@ -120,6 +120,9 @@ def configure(env):
if (env["use_lto"] == "yes"): if (env["use_lto"] == "yes"):
env.Append(CCFLAGS=['-flto']) env.Append(CCFLAGS=['-flto'])
env.Append(LINKFLAGS=['-flto']) env.Append(LINKFLAGS=['-flto'])
if (env["use_llvm"] == "no"):
env['RANLIB'] = 'gcc-ranlib'
env['AR'] = 'gcc-ar'
env.Append(CCFLAGS=['-pipe']) env.Append(CCFLAGS=['-pipe'])
env.Append(LINKFLAGS=['-pipe']) env.Append(LINKFLAGS=['-pipe'])