[cmake-developers] _check_cxx_compiler_attribute macro from GenerateExportHeader.cmake
Rolf Eike Beer
eike at sf-mail.de
Tue Feb 21 17:21:06 EST 2012
This macro does this:
macro(_check_cxx_compiler_attribute _ATTRIBUTE _RESULT)
check_cxx_source_compiles("${_ATTRIBUTE} int somefunc() { return 0; }
int main() { return somefunc();}" ${_RESULT}
# Some compilers do not fail with a bad flag
FAIL_REGEX "unrecognized .*option" # GNU
FAIL_REGEX "ignoring unknown option" # MSVC
FAIL_REGEX "warning D9002" # MSVC, any lang
FAIL_REGEX "[Uu]nknown option" # HP
FAIL_REGEX "[Ww]arning: [Oo]ption" # SunPro
FAIL_REGEX "command option .* is not recognized" # XL
)
endmacro()
The FAIL_REGEX were copied from CheckCXXCompilerFlag and are to match errors
about broken command line arguments. I doubt they make any sense at this
point. Is this intentional or by accident?
Eike
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