d256ba078a
Add a `CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` variable to specify a list of custom variables to be forwarded to a `try_compile` test project. This will be useful for platform information modules or toolchain files to forward some platform-specific set of variables from the host project (perhaps set in its cache) to the test project so that it can build the same way.
24 lines
762 B
CMake
24 lines
762 B
CMake
enable_language(C)
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# Normally this variable should be set by a platform information module or
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# a toolchain file, but for purposes of this test we simply set it here.
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set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES MY_CUSTOM_VARIABLE)
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set(MY_CUSTOM_VARIABLE SOME_VALUE)
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try_compile(result ${CMAKE_CURRENT_BINARY_DIR}
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SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/src.c
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OUTPUT_VARIABLE out
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)
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if(NOT result)
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message(FATAL_ERROR "try_compile failed:\n${out}")
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endif()
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# Check that the cache was populated with our custom variable.
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file(STRINGS ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CMakeCache.txt entries
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REGEX MY_CUSTOM_VARIABLE:UNINITIALIZED=${MY_CUSTOM_VARIABLE}
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)
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if(NOT entries)
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message(FATAL_ERROR "try_compile did not populate cache as expected")
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endif()
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