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cmake: ccache

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This commit is contained in:
Alexander Alekhin 2016-11-08 18:00:03 +03:00
parent af8e6b06f7
commit a3bfa6f566
3 changed files with 36 additions and 4 deletions
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2
CMakeLists.txt
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@ -217,6 +217,7 @@ OCV_OPTION(INSTALL_TESTS "Install accuracy and performance test binar
# OpenCV build options
# ===================================================
OCV_OPTION(ENABLE_CCACHE "Use ccache" (UNIX AND NOT IOS AND (CMAKE_GENERATOR MATCHES "Makefile" OR CMAKE_GENERATOR MATCHES "Ninja")) )
OCV_OPTION(ENABLE_DYNAMIC_CUDA "Enabled dynamic CUDA linkage" ON IF ANDROID )
OCV_OPTION(ENABLE_PRECOMPILED_HEADERS "Use precompiled headers" ON IF (NOT IOS) )
OCV_OPTION(ENABLE_SOLUTION_FOLDERS "Solution folder in Visual Studio or in other IDEs" (MSVC_IDE OR CMAKE_GENERATOR MATCHES Xcode) IF (CMAKE_VERSION VERSION_GREATER "2.8.0") )
@ -731,6 +732,7 @@ else()
status(" Linker flags (Release):" ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_RELEASE})
status(" Linker flags (Debug):" ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_DEBUG})
endif()
status(" ccache:" CMAKE_COMPILER_IS_CCACHE THEN YES ELSE NO)
status(" Precompiled headers:" PCHSupport_FOUND AND ENABLE_PRECOMPILED_HEADERS THEN YES ELSE NO)
# ========================== OpenCV modules ==========================

34
cmake/OpenCVCompilerOptions.cmake
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@ -1,3 +1,33 @@
if(ENABLE_CCACHE AND NOT CMAKE_COMPILER_IS_CCACHE)
# This works fine with Unix Makefiles and Ninja generators
find_host_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
message(STATUS "Looking for ccache - found (${CCACHE_PROGRAM})")
get_property(__OLD_RULE_LAUNCH_COMPILE GLOBAL PROPERTY RULE_LAUNCH_COMPILE)
if(__OLD_RULE_LAUNCH_COMPILE)
message(STATUS "Can't replace CMake compiler launcher")
else()
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
# NOTE: Actually this check doesn't work as expected.
# "RULE_LAUNCH_COMPILE" is ignored by CMake during try_compile() step.
# ocv_check_compiler_flag(CXX "" IS_CCACHE_WORKS)
set(IS_CCACHE_WORKS 1)
if(IS_CCACHE_WORKS)
set(CMAKE_COMPILER_IS_CCACHE 1)
else()
message(STATUS "Unable to compile program with enabled ccache, reverting...")
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${__OLD_RULE_LAUNCH_COMPILE}")
endif()
else()
message(STATUS "Looking for ccache - not found")
endif()
endif()
endif()
if((CMAKE_COMPILER_IS_CLANGCXX OR CMAKE_COMPILER_IS_CLANGCC OR CMAKE_COMPILER_IS_CCACHE) AND NOT CMAKE_GENERATOR MATCHES "Xcode")
set(ENABLE_PRECOMPILED_HEADERS OFF CACHE BOOL "" FORCE)
endif()
if(MINGW OR (X86 AND UNIX AND NOT APPLE))
# mingw compiler is known to produce unstable SSE code with -O3 hence we are trying to use -O2 instead
if(CMAKE_COMPILER_IS_GNUCXX)
@ -111,6 +141,10 @@ if(CMAKE_COMPILER_IS_GNUCXX)
add_extra_compiler_option(-pthread)
endif()
if(CMAKE_COMPILER_IS_CLANGCXX)
add_extra_compiler_option(-Qunused-arguments)
endif()
if(OPENCV_WARNINGS_ARE_ERRORS)
add_extra_compiler_option(-Werror)
endif()

4
cmake/OpenCVDetectCXXCompiler.cmake
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@ -14,10 +14,6 @@ if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
set(CMAKE_COMPILER_IS_CLANGCC 1)
endif()
if((CMAKE_COMPILER_IS_CLANGCXX OR CMAKE_COMPILER_IS_CLANGCC) AND NOT CMAKE_GENERATOR MATCHES "Xcode")
set(ENABLE_PRECOMPILED_HEADERS OFF CACHE BOOL "" FORCE)
endif()
# ----------------------------------------------------------------------------
# Detect Intel ICC compiler -- for -fPIC in 3rdparty ( UNIX ONLY ):
# see include/opencv/cxtypes.h file for related ICC & CV_ICC defines.