Features: Use the features symbol in the feature-test compile.
Clang discards the entire string if it is not used, removing the ability to read the features from the compiled binary. That is prevented by using the symbol. GNU with -O3 also discards the string, so use the string in a way which is determined by a runtime value (argc) to prevent it being discarded.
This commit is contained in:
parent
5c04dfe465
commit
f6f1095413
|
@ -20,7 +20,7 @@ macro(record_compiler_features lang compile_flags feature_list)
|
|||
endif()
|
||||
endforeach()
|
||||
file(APPEND "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}"
|
||||
"\n};\n\nint main() { return 0; }\n")
|
||||
"\n};\n\nint main(int argc, char** argv) { (void)argv; return features[argc]; }\n")
|
||||
|
||||
try_compile(CMAKE_${lang}_FEATURE_TEST
|
||||
${CMAKE_BINARY_DIR} "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}"
|
||||
|
|
Loading…
Reference in New Issue