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| author | Blue Swirl <blauwirbel@gmail.com> | 2009-10-18 16:26:06 +0000 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2009-10-18 16:26:06 +0000 |
| commit | 747bbdf79ffa7774c1343774e2202cf13105ad6f (patch) | |
| tree | 92ac8bbe9d76d182f2bf93b833eda6efda27c23e /configure | |
| parent | 78cfb07fe0dc556cae662a0fab5fe1bd33daabdb (diff) | |
| download | qemu-747bbdf79ffa7774c1343774e2202cf13105ad6f.zip qemu-747bbdf79ffa7774c1343774e2202cf13105ad6f.tar.gz qemu-747bbdf79ffa7774c1343774e2202cf13105ad6f.tar.bz2 | |
Suppress warnings about 'warn_unused_result' attribute directive
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -1667,6 +1667,23 @@ if compile_prog "" "" ; then fi ########################################## +# check if the compiler understands attribute warn_unused_result +# +# This could be smarter, but gcc -Werror does not error out even when warning +# about attribute warn_unused_result + +gcc_attribute_warn_unused_result=no +cat > $TMPC << EOF +#if defined(__GNUC__) && (__GNUC__ < 4) && defined(__GNUC_MINOR__) && (__GNUC__ < 4) +#error gcc 3.3 or older +#endif +int main(void) { return 0;} +EOF +if compile_prog "" ""; then + gcc_attribute_warn_unused_result=yes +fi + +########################################## # check if we have fdatasync fdatasync=no @@ -1994,6 +2011,9 @@ fi if test "$need_offsetof" = "yes" ; then echo "CONFIG_NEED_OFFSETOF=y" >> $config_host_mak fi +if test "$gcc_attribute_warn_unused_result" = "yes" ; then + echo "CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT=y" >> $config_host_mak +fi if test "$fdatasync" = "yes" ; then echo "CONFIG_FDATASYNC=y" >> $config_host_mak fi |