Fix the aligned variable attribute check #14211
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By default compilers may not treat attribute warnings as errors when encountering an unknown __attribute__, unless some error option is provided (-Werror=attributes, -Werror...). This fixes the check and wraps it into a separate M4 macro to be extendable in the future if needed. It checks if conftest.err file was generated by the compilation check when warnings appear. Also, PHP check is a bit customized by using __alignof__ keyword, so it is left in there for now to not break existing checks.
devnexen
approved these changes
May 13, 2024
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By default compilers may not treat attribute warnings as errors when encountering an unknown
__attribute__, unless some error option is provided (-Werror=attributes, -Werror...). This fixes the check and wraps it into a separate M4 macro to be extendable in the future if needed. It checks if conftest.err file was generated by the compilation check when warnings appear. Also, PHP check is a bit customized by using__alignof__keyword, so it is left in there for now to not break existing checks.