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| author | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2014-12-21 05:18:12 -0200 |
|---|---|---|
| committer | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2014-12-21 21:26:51 -0200 |
| commit | ed8f32f03ef01f61f76b5c4dc02abd6f516cd4bb (patch) | |
| tree | bd93a480ab1f678d1eadf9dff851e066d4f936e1 | |
| parent | c1072491030867d24a276ed803736ffbc1c24355 (diff) | |
CMake: Use improved optimization flags on MSVC
While not having a noticeable effect on CPU-bound applications, this
change gives an about 30-50% increase in performance for games using
the GPU.
| -rw-r--r-- | CMakeLists.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 638b468a6..af53bda71 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -11,6 +11,25 @@ else() add_definitions(/D_CRT_SECURE_NO_WARNINGS) # set up output paths for executable binaries (.exe-files, and .dll-files on DLL-capable platforms) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) + + # Tweak optimization settings + # As far as I can tell, there's no way to override the CMake defaults while leaving user + # changes intact, so we'll just clobber everything and say sorry. + message(STATUS "Cache compiler flags ignored, please edit CMakeFiles.txt to change the flags.") + # /MD - Multi-threaded runtime + # /Ox - Full optimization + # /Oi - Use intrinsic functions + # /Oy- - Don't omit frame pointer + # /GR- - Disable RTTI + # /GS- - No stack buffer overflow checks + # /EHsc - C++-only exception handling semantics + set(optimization_flags "/MD /Ox /Oi /Oy- /DNDEBUG /GR- /GS- /EHsc") + # /Zi - Output debugging information + # /Zo - enahnced debug info for optimized builds + set(CMAKE_C_FLAGS_RELEASE "${optimization_flags} /Zi" CACHE STRING "" FORCE) + set(CMAKE_CXX_FLAGS_RELEASE "${optimization_flags} /Zi" CACHE STRING "" FORCE) + set(CMAKE_C_FLAGS_RELWITHDEBINFO "${optimization_flags} /Zi /Zo" CACHE STRING "" FORCE) + set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${optimization_flags} /Zi /Zo" CACHE STRING "" FORCE) endif() add_definitions(-DSINGLETHREADED) |