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Add unity build option

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Each component and each MW-subsystem will be used as a single compilation unit.
This commit is contained in:
scrawl 2014-03-16 23:40:59 +01:00
parent c8c0e5de38
commit 9089df3080
2 changed files with 69 additions and 18 deletions
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2
CMakeLists.txt
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@ -73,6 +73,8 @@ option(OGRE_STATIC "Link static build of Ogre and Ogre Plugins into the binarie
option(BOOST_STATIC "Link static build of Boost into the binaries" FALSE) option(BOOST_STATIC "Link static build of Boost into the binaries" FALSE)
option(SDL2_STATIC "Link static build of SDL into the binaries" FALSE) option(SDL2_STATIC "Link static build of SDL into the binaries" FALSE)
option(OPENMW_UNITY_BUILD "Use fewer compilation units to speed up compile time" FALSE)
# Apps and tools # Apps and tools
option(BUILD_BSATOOL "build BSA extractor" OFF) option(BUILD_BSATOOL "build BSA extractor" OFF)
option(BUILD_ESMTOOL "build ESM inspector" ON) option(BUILD_ESMTOOL "build ESM inspector" ON)

49
cmake/OpenMWMacros.cmake
View file

@ -1,25 +1,74 @@
function(enable_unity_build UB_SUFFIX SOURCE_VARIABLE_NAME)
set(files ${SOURCE_VARIABLE_NAME})
# Generate a unique filename for the unity build translation unit
set(unit_build_file ${CMAKE_CURRENT_BINARY_DIR}/ub_${UB_SUFFIX}.cpp)
# Exclude all translation units from compilation
set_source_files_properties(${files} PROPERTIES HEADER_FILE_ONLY true)
# Open the ub file
FILE(WRITE ${unit_build_file} "// Unity Build generated by CMake\n")
# Add include statement for each translation unit
foreach(source_file ${files} )
FILE( APPEND ${unit_build_file} "#include <${source_file}>\n")
endforeach(source_file)
# Complement list of translation units with the name of ub
set(${SOURCE_VARIABLE_NAME} ${${SOURCE_VARIABLE_NAME}} ${unit_build_file} PARENT_SCOPE)
endfunction(enable_unity_build)
macro (add_openmw_dir dir) macro (add_openmw_dir dir)
set (files) set (files)
set (cppfiles)
foreach (u ${ARGN}) foreach (u ${ARGN})
# Add cpp and hpp to OPENMW_FILES
file (GLOB ALL "${dir}/${u}.[ch]pp") file (GLOB ALL "${dir}/${u}.[ch]pp")
foreach (f ${ALL}) foreach (f ${ALL})
list (APPEND files "${f}") list (APPEND files "${f}")
list (APPEND OPENMW_FILES "${f}") list (APPEND OPENMW_FILES "${f}")
endforeach (f) endforeach (f)
# Add cpp to unity build
file (GLOB ALL "${dir}/${u}.cpp")
foreach (f ${ALL})
list (APPEND cppfiles "${f}")
endforeach (f)
endforeach (u) endforeach (u)
if (OPENMW_UNITY_BUILD)
enable_unity_build(${dir} "${cppfiles}")
list (APPEND OPENMW_FILES ${CMAKE_CURRENT_BINARY_DIR}/ub_${dir}.cpp)
endif()
source_group ("apps\\openmw\\${dir}" FILES ${files}) source_group ("apps\\openmw\\${dir}" FILES ${files})
endmacro (add_openmw_dir) endmacro (add_openmw_dir)
macro (add_component_dir dir) macro (add_component_dir dir)
set (files) set (files)
set (cppfiles)
foreach (u ${ARGN}) foreach (u ${ARGN})
file (GLOB ALL "${dir}/${u}.[ch]pp") file (GLOB ALL "${dir}/${u}.[ch]pp")
foreach (f ${ALL}) foreach (f ${ALL})
list (APPEND files "${f}") list (APPEND files "${f}")
list (APPEND COMPONENT_FILES "${f}") list (APPEND COMPONENT_FILES "${f}")
endforeach (f) endforeach (f)
# Add cpp to unity build
file (GLOB ALL "${dir}/${u}.cpp")
foreach (f ${ALL})
list (APPEND cppfiles "${f}")
endforeach (f)
endforeach (u) endforeach (u)
if (OPENMW_UNITY_BUILD)
enable_unity_build(${dir} "${cppfiles}")
list (APPEND COMPONENT_FILES ${CMAKE_CURRENT_BINARY_DIR}/ub_${dir}.cpp)
endif()
source_group ("components\\${dir}" FILES ${files}) source_group ("components\\${dir}" FILES ${files})
endmacro (add_component_dir) endmacro (add_component_dir)