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- enable use of precompiled headers for MSVC. Thanks to a small CMake script I recently found this could be done non-invasively.
Due to the VC++ 2015 headers being rather bloated (the average include size per source is 400-500kb) this provides a noticable compile speedup, although right now this only covers the game code, so there should be more room for improvement.
This commit is contained in:
Christoph Oelckers
parent
12129b0f07
commit
9cc873ecdd
2 changed files with 71 additions and 29 deletions
34
precompiled_headers.cmake
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34
precompiled_headers.cmake
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@ -0,0 +1,34 @@
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#
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# Christoph Heindl 2010
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# Precompiled Headers Demo
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# http://cheind.wordpress.com
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#
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# Instructs the MSVC toolset to use the precompiled header PRECOMPILED_HEADER
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# for each source file given in the collection named by SOURCE_VARIABLE_NAME.
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function(enable_precompiled_headers PRECOMPILED_HEADER SOURCE_VARIABLE_NAME)
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if(MSVC)
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set(files ${${SOURCE_VARIABLE_NAME}})
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# Generate precompiled header translation unit
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get_filename_component(pch_basename ${PRECOMPILED_HEADER} NAME_WE)
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set(pch_abs ${CMAKE_CURRENT_SOURCE_DIR}/${PRECOMPILED_HEADER})
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set(pch_unity ${CMAKE_CURRENT_BINARY_DIR}/${pch_basename}.cpp)
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FILE(WRITE ${pch_unity} "// Precompiled header unity generated by CMake\n")
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FILE(APPEND ${pch_unity} "#include <${pch_abs}>\n")
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set_source_files_properties(${pch_unity} PROPERTIES COMPILE_FLAGS "/Yc\"${pch_abs}\"")
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# Update properties of source files to use the precompiled header.
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# Additionally, force the inclusion of the precompiled header at beginning of each source file.
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foreach(source_file ${files} )
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set_source_files_properties(
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${source_file}
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PROPERTIES COMPILE_FLAGS
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"/Yu\"${pch_abs}\" /FI\"${pch_abs}\""
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)
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endforeach(source_file)
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# Finally, update the source file collection to contain the precompiled header translation unit
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set(${SOURCE_VARIABLE_NAME} ${${SOURCE_VARIABLE_NAME}} ${pch_unity} PARENT_SCOPE)
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endif(MSVC)
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endfunction(enable_precompiled_headers)
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@ -1,5 +1,7 @@
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cmake_minimum_required( VERSION 2.8.7 )
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include(../precompiled_headers.cmake)
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if( COMMAND cmake_policy )
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cmake_policy( SET CMP0003 NEW )
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endif()
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@ -959,15 +961,8 @@ set( FASTMATH_SOURCES
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r_data/colormaps.cpp
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r_data/r_translate.cpp
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)
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add_executable( zdoom WIN32 MACOSX_BUNDLE
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${HEADER_FILES}
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${NOT_COMPILED_SOURCE_FILES}
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__autostart.cpp
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${ASM_SOURCES}
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${SYSTEM_SOURCES}
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${X86_SOURCES}
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${FASTMATH_SOURCES}
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x86.cpp
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set (PCH_SOURCES
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actorptrselect.cpp
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am_map.cpp
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b_bot.cpp
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@ -1028,7 +1023,6 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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m_misc.cpp
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m_png.cpp
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m_random.cpp
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m_specialpaths.cpp
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memarena.cpp
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md5.cpp
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name.cpp
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@ -1090,7 +1084,6 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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statistics.cpp
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stats.cpp
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stringtable.cpp
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strnatcmp.c
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tables.cpp
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teaminfo.cpp
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tempfiles.cpp
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@ -1105,7 +1098,6 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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w_wad.cpp
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wi_stuff.cpp
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zstrformat.cpp
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zstring.cpp
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g_doom/a_doommisc.cpp
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g_heretic/a_hereticmisc.cpp
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g_hexen/a_hexenmisc.cpp
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@ -1149,22 +1141,6 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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g_shared/sbar_mugshot.cpp
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g_shared/shared_hud.cpp
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g_shared/shared_sbar.cpp
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math/asin.c
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math/atan.c
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math/const.c
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math/cosh.c
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math/exp.c
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math/isnan.c
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math/log.c
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math/log10.c
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math/mtherr.c
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math/polevl.c
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math/sin.c
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math/sinh.c
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math/sqrt.c
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math/tan.c
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math/tanh.c
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math/fastsin.cpp
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resourcefiles/ancientzip.cpp
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resourcefiles/file_7z.cpp
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resourcefiles/file_grp.cpp
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@ -1175,7 +1151,6 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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resourcefiles/file_pak.cpp
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resourcefiles/file_directory.cpp
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resourcefiles/resourcefile.cpp
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sfmt/SFMT.cpp
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textures/animations.cpp
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textures/anim_switches.cpp
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textures/automaptexture.cpp
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@ -1228,6 +1203,39 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
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zscript/zcc_compile.cpp
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zscript/zcc_expr.cpp
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zscript/zcc_parser.cpp
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)
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enable_precompiled_headers( g_pch.h PCH_SOURCES )
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add_executable( zdoom WIN32 MACOSX_BUNDLE
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${HEADER_FILES}
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${NOT_COMPILED_SOURCE_FILES}
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__autostart.cpp
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${ASM_SOURCES}
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${SYSTEM_SOURCES}
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${X86_SOURCES}
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${FASTMATH_SOURCES}
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${PCH_SOURCES}
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x86.cpp
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m_specialpaths.cpp
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strnatcmp.c
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zstring.cpp
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math/asin.c
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math/atan.c
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math/const.c
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math/cosh.c
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math/exp.c
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math/isnan.c
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math/log.c
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math/log10.c
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math/mtherr.c
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math/polevl.c
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math/sin.c
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math/sinh.c
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math/sqrt.c
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math/tan.c
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math/tanh.c
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math/fastsin.cpp
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sfmt/SFMT.cpp
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zzautozend.cpp
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)
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