krita doesn't build with -O3 on armv7hl, it breaks with the followings errors:
In file included from /usr/include/qt5/QtCore/QtEndian:1:0,
/usr/include/qt5/QtCore/qendian.h: In function 'void PsdPixelUtils::writePixelDataCommon(QIODevice*, KisPaintDeviceSP, const QRect&, psd_color_mode, int, bool, bool, QVector<PsdPixelUtils::ChannelWritingInfo>&)':
/usr/include/qt5/QtCore/qendian.h:142:36: fatal error: You must enable NEON instructions (e.g. -mfloat-abi=softfp -mfpu=neon) to use these intrinsics.
it build fine with -O2. Someone already reported the similar issue to gcc upstream:
It would be great if we could include this patch in f24/rawhide.
> /usr/include/qt5/QtCore/qendian.h:142:36: fatal error: You must enable NEON
> instructions (e.g. -mfloat-abi=softfp -mfpu=neon) to use these intrinsics.
> return __builtin_bswap16(source);
These settings are wrong. They should be "-mfpu=vfpv3-d16 -mfloat-abi=hard" which is what the Fedora ARMv7 default CFLAGS are, anything else will cause issues because everything else isn't using them. Why aren't we using the distro defaults?
> it build fine with -O2. Someone already reported the similar issue to gcc
So the distro default CFLAGS is -O2, is there a reason we're diverging from these?
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