Using ccache with CMake

建议直接修改linux.toolchain.cmake 中的配置

find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
    message(STATUS "Set up ccache ...")
    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
endif()

https://crascit.com/2016/04/09/using-ccache-with-cmake/

https://github.com/xizhibei/blog/issues/145

https://www.cnblogs.com/sinferwu/p/15353427.html

linux.toolchain.cmake

cmake_minimum_required( VERSION 2.6.3 )
set(CMAKE_SYSTEM_NAME Linux )
set(CMAKE_BUILD_TYPE DEBUG)

SET (CMAKE_C_COMPILER             "/usr/bin/clang")
SET (CMAKE_C_FLAGS                "-Wall -std=c99")
SET (CMAKE_C_FLAGS_DEBUG          "-O0 -g")
SET (CMAKE_C_FLAGS_MINSIZEREL     "-Os -DNDEBUG")
SET (CMAKE_C_FLAGS_RELEASE        "-O3 -DNDEBUG")
SET (CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -g")
 
SET (CMAKE_CXX_COMPILER             "/usr/bin/clang++")
SET (CMAKE_CXX_FLAGS                "-Wall")
SET (CMAKE_CXX_FLAGS_DEBUG          "-O0 -g")
SET (CMAKE_CXX_FLAGS_MINSIZEREL     "-Os -DNDEBUG")
SET (CMAKE_CXX_FLAGS_RELEASE        "-O3 -DNDEBUG")
SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g")
 
SET (CMAKE_AR      "/usr/bin/llvm-ar-10")
SET (CMAKE_LINKER  "/usr/bin/llvm-ld-10")
SET (CMAKE_NM      "/usr/bin/llvm-nm-10")
SET (CMAKE_OBJDUMP "/usr/bin/llvm-objdump-10")
SET (CMAKE_RANLIB  "/usr/bin/llvm-ranlib-10")