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SET(USE_CCACHE "OFF" CACHE BOOL "Use ccache for building")
SET(CCACHE_EXECUTABLE "" CACHE FILEPATH
"Path to the ccache executable to use when USE_CCACHE is set")
IF(USE_CCACHE)
IF(CCACHE_EXECUTABLE STREQUAL "")
UNSET(CCACHE_EXECUTABLE CACHE)
FIND_PROGRAM(CCACHE_EXECUTABLE "ccache")
IF(NOT CCACHE_EXECUTABLE)
MESSAGE(FATAL_ERROR "USE_CCACHE set, but ccache was not found!")
ENDIF()
MESSAGE(STATUS "Using ccache (detected): ${CCACHE_EXECUTABLE}")
ELSE()
MESSAGE(STATUS "Using ccache: ${CCACHE_EXECUTABLE}")
ENDIF()
SET_PROPERTY(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_EXECUTABLE}")
SET_PROPERTY(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CCACHE_EXECUTABLE}")
ENDIF()
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