• Filip Roséen's avatar
    m4: fix c++ check for -f flags · c1ec8734
    Filip Roséen authored
    Both gcc and clang generate warnings for unsupported -f$FLAG by
    default, meaning that the previous implementation would consider
    unsupported flags as supported (as a warning is not an error that
    fails compilation).
    
    The addition of -Werror treats warnings as errors, and will prevent
    false-positives in terms of -f$FLAG support.
    Signed-off-by: Jean-Baptiste Kempf's avatarJean-Baptiste Kempf <jb@videolan.org>
    c1ec8734
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