cmutils-ccache.cmake

##################################################################################
# MIT License                                                                    #
#                                                                                #
# Copyright (c) 2018 Maxime Pinard                                               #
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# Functions summary:
# - cmutils_target_use_ccache(target)

# include guard
if(CMUTILS_CCACHE_INCLUDED)
	return()
endif()
set(CMUTILS_CCACHE_INCLUDED ON)

# dependencies
include(${CMAKE_CURRENT_LIST_DIR}/cmutils-dev.cmake)

## cmutils_target_use_ccache(target)
# Enable ccache use on the given target if the compiler is gcc or clang.
#   {value} [in] target:   Target to configure
function(cmutils_target_use_ccache target)
	if(NOT TARGET ${target})
		message(FATAL_ERROR "Invalid argument: ${target} is not a target")
	endif()

	cmutils_define_compiler_variables()
	if(COMPILER_GCC OR COMPILER_CLANG)
		find_program(CCACHE_PROGRAM ccache)
		if(NOT ${CCACHE_PROGRAM} STREQUAL CCACHE_PROGRAM-NOTFOUND)
			message(STATUS "[cmutils] ccache found: ${CCACHE_PROGRAM}")
			set_target_properties(${target} PROPERTIES C_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
			set_target_properties(${target} PROPERTIES CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
			message(STATUS "[cmutils] ${target}: enabled ccache use")
		endif()
	endif()
endfunction()