On 24/07/2017 20:27, Philippe Mathieu-Daudé wrote: > Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org> > --- > configure | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/configure b/configure > index 6b52e19ee3..48295aa1e6 100755 > --- a/configure > +++ b/configure > @@ -1582,8 +1582,12 @@ gcc_flags="-Wold-style-declaration > -Wold-style-definition -Wtype-limits" > gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers > $gcc_flags" > gcc_flags="-Wno-missing-include-dirs -Wempty-body -Wnested-externs > $gcc_flags" > gcc_flags="-Wendif-labels -Wno-shift-negative-value $gcc_flags" > -gcc_flags="-Wno-initializer-overrides -Wexpansion-to-defined $gcc_flags" > +gcc_flags="-Wno-initializer-overrides $gcc_flags" > gcc_flags="-Wno-string-plus-int $gcc_flags" > +# clang does not support -Wexpansion-to-defined > +if ! echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then > + gcc_flags="-Wexpansion-to-defined $gcc_flags" > +fi > # Note that we do not add -Werror to gcc_flags here, because that would > # enable it for all configure tests. If a configure test failed due > # to -Werror this would just silently disable some features,
Clang 3.9 does. Paolo
