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fa135bdcd9
CheckSymbolExists do not do this, so add new CheckConstExists that will use CheckCSourceCompiles() to check this. v2: use set() instead of string(APPEND)
24 lines
740 B
CMake
24 lines
740 B
CMake
include(CheckCSourceCompiles)
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macro(check_const_exists CONST FILES VARIABLE)
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set(check_const_exists_source "")
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foreach(file ${FILES})
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set(check_const_exists_source
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"${check_const_exists_source}
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#include <${file}>")
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endforeach()
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set(check_const_exists_source
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"${check_const_exists_source}
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int main() { (void)${CONST}; return 0; }")
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check_c_source_compiles("${check_const_exists_source}" ${VARIABLE})
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if (${${VARIABLE}})
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set(${VARIABLE} 1 CACHE INTERNAL "Have const ${CONST}")
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message(STATUS "Looking for ${CONST} - found")
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else()
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set(${VARIABLE} 0 CACHE INTERNAL "Have const ${CONST}")
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message(STATUS "Looking for ${CONST} - not found")
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endif()
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endmacro(check_const_exists)
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