zephyr/cmake/ccache.cmake

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CMake
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# Use ccache if it is installed, unless the user explicitly disables
# it by setting USE_CCACHE=0.
if(USE_CCACHE STREQUAL "0")
else()
find_program(CCACHE_FOUND ccache)
if(CCACHE_FOUND)
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
endif()
endif()