Merge pull request #7413

1fbb33c cmake: fix ccache detection (anon)
This commit is contained in:
luigi1111 2021-03-20 01:49:07 -04:00
commit 53f3961259
No known key found for this signature in database
GPG key ID: F4ACA0183641E010

View file

@ -42,12 +42,19 @@
find_program(CCACHE_FOUND ccache)
if (CCACHE_FOUND)
# Try to compile a test program with ccache, in order to verify if it really works. (needed on exotic setups)
# Create a temporary file with a simple program.
set(TEMP_CPP_FILE "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp/test-program.cpp")
file(WRITE "${TEMP_CPP_FILE}" "int main() { return 0; }")
# And run the found ccache on it.
execute_process(COMMAND "${CCACHE_FOUND}" "${CMAKE_CXX_COMPILER}" "${TEMP_CPP_FILE}" RESULT_VARIABLE RET)
if (${RET} EQUAL 0)
set(TEST_PROJECT "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp")
file(WRITE "${TEST_PROJECT}/CMakeLists.txt" [=[
cmake_minimum_required(VERSION 3.1)
project(test)
option (CCACHE "")
file(WRITE "${CMAKE_SOURCE_DIR}/test.cpp" "int main() { return 0; }")
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE}")
set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CCACHE}")
add_executable(test test.cpp)
]=])
try_compile(RET "${TEST_PROJECT}/build" "${TEST_PROJECT}" "test" CMAKE_FLAGS -DCCACHE="${CCACHE_FOUND}")
unset(TEST_PROJECT)
if (${RET})
# Success
message(STATUS "Found usable ccache: ${CCACHE_FOUND}")
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_FOUND}")