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@henryiii henryiii Fix CCache 04c67c1 Mar 23, 2018
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# Based on https://crascit.com/2016/04/09/using-ccache-with-cmake/
cmake_minimum_required(VERSION 3.4)
find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
# Set up wrapper scripts
set(C_LAUNCHER "${CCACHE_PROGRAM}")
set(CXX_LAUNCHER "${CCACHE_PROGRAM}")
set(CUDA_LAUNCHER "${CCACHE_PROGRAM}")
file(WRITE "${CMAKE_BINARY_DIR}/launch-c" ""
"#!/usr/bin/env sh\n"
"\n"
"# Xcode generator doesn't include the compiler as the\n"
"# first argument, Ninja and Makefiles do. Handle both cases.\n"
"if [ \"$1\" = \"${CMAKE_C_COMPILER}\" ] ; then\n"
" shift\n"
"fi\n"
"\n"
"export CCACHE_CPP2=true\n"
"exec \"${C_LAUNCHER}\" \"${CMAKE_C_COMPILER}\" \"$@\"\n"
)
file(WRITE "${CMAKE_BINARY_DIR}/launch-cxx" ""
"#!/usr/bin/env sh\n"
"\n"
"# Xcode generator doesn't include the compiler as the\n"
"# first argument, Ninja and Makefiles do. Handle both cases.\n"
"if [ \"$1\" = \"${CMAKE_CXX_COMPILER}\" ] ; then\n"
" shift\n"
"fi\n"
"\n"
"export CCACHE_CPP2=true\n"
"exec \"${CXX_LAUNCHER}\" \"${CMAKE_CXX_COMPILER}\" \"$@\"\n"
)
# Cuda support only added in CMake 3.10
file(WRITE "${CMAKE_BINARY_DIR}/launch-cuda" ""
"#!/usr/bin/env sh\n"
"\n"
"# Xcode generator doesn't include the compiler as the\n"
"# first argument, Ninja and Makefiles do. Handle both cases.\n"
"if [ \"$1\" = \"${CMAKE_CUDA_COMPILER}\" ] ; then\n"
" shift\n"
"fi\n"
"\n"
"export CCACHE_CPP2=true\n"
"exec \"${CUDA_LAUNCHER}\" \"${CMAKE_CUDA_COMPILER}\" \"$@\"\n"
)
execute_process(COMMAND chmod a+rx
"${CMAKE_BINARY_DIR}/launch-c"
"${CMAKE_BINARY_DIR}/launch-cxx"
"${CMAKE_BINARY_DIR}/launch-cuda"
)
if(CMAKE_GENERATOR STREQUAL "Xcode")
# Set Xcode project attributes to route compilation and linking
# through our scripts
set(CMAKE_XCODE_ATTRIBUTE_CC "${CMAKE_BINARY_DIR}/launch-c")
set(CMAKE_XCODE_ATTRIBUTE_CXX "${CMAKE_BINARY_DIR}/launch-cxx")
set(CMAKE_XCODE_ATTRIBUTE_LD "${CMAKE_BINARY_DIR}/launch-c")
set(CMAKE_XCODE_ATTRIBUTE_LDPLUSPLUS "${CMAKE_BINARY_DIR}/launch-cxx")
else()
# Support Unix Makefiles and Ninja
set(CMAKE_C_COMPILER_LAUNCHER "${CMAKE_BINARY_DIR}/launch-c")
set(CMAKE_CXX_COMPILER_LAUNCHER "${CMAKE_BINARY_DIR}/launch-cxx")
set(CMAKE_CUDA_COMPILER_LAUNCHER "${CMAKE_BINARY_DIR}/launch-cuda")
endif()
message(STATUS "Using CCache")
else()
message(STATUS "Not using CCache")
endif()
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