On Tue, May 12, 2015 at 06:20:48PM +0800, 周晓勇 wrote: > > > > > -----原始邮件----- > > 发件人: "Michael Niedermayer" <michae...@gmx.at> > > 发送时间: 2015年5月12日 星期二 > > 收件人: "FFmpeg development discussions and patches" <ffmpeg-devel@ffmpeg.org> > > 抄送: > > 主题: Re: [FFmpeg-devel] [PATCH 1/2] configure: disabled -mips64 option for > > loongson and remove redundant flags > > > > On Tue, May 12, 2015 at 10:32:19AM +0800, 周晓勇 wrote: > > > > > > > > > > > > > -----原始邮件----- > > > > 发件人: "Michael Niedermayer" <michae...@gmx.at> > > > > 发送时间: 2015年5月11日 星期一 > > > > 收件人: "FFmpeg development discussions and patches" > > > > <ffmpeg-devel@ffmpeg.org> > > > > 抄送: > > > > 主题: Re: [FFmpeg-devel] [PATCH 1/2] configure: disabled -mips64 option > > > > for loongson and remove redundant flags > > > > > > > > On Mon, May 11, 2015 at 12:38:46PM +0800, 周晓勇 wrote: > > > > > From 9837274dcee5e1900160901cf28d883246a7ecfb Mon Sep 17 00:00:00 2001 > > > > > From: Zhou Xiaoyong <zhouxiaoy...@loongson.cn> > > > > > Date: Mon, 11 May 2015 03:28:52 -0400 > > > > > Subject: [PATCH 1/2] configure: disabled -mips64 option for loongson > > > > > and remove redundant flags > > > > > > > > > > 1.Option -march=loongson3a conflicts with -mips64 or -mips64r2. > > > > > 2.Option -mhard-float has been added. > > > > > > > > > > Signed-off-by: Zhou Xiaoyong <zhouxiaoy...@loongson.cn> > > > > > --- > > > > > configure | 5 +---- > > > > > 1 files changed, 1 insertions(+), 4 deletions(-) > > > > > > > > > > diff --git a/configure b/configure > > > > > index 1b41367..7716e66 100755 > > > > > --- a/configure > > > > > +++ b/configure > > > > > @@ -3937,7 +3937,6 @@ elif enabled mips; then > > > > > enable fast_cmov > > > > > enable fast_unaligned > > > > > disable aligned_stack > > > > > - cpuflags="-march=$cpu" > > > > > ;; > > > > > generic) > > > > > disable mips32r5 > > > > > @@ -4691,7 +4690,7 @@ elif enabled mips; then > > > > > if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); > > > > > then > > > > > add_cflags "-mips64r2" > > > > > add_asflags "-mips64r2" > > > > > - elif enabled mips64 && enabled mipsfpu; then > > > > > + elif enabled mips64 && enabled mipsfpu && disabled loongson3; > > > > > then > > > > > > > > this breaks build on mips: > > > > CC libavcodec/ac3dec_fixed.o > > > > In file included from ffmpeg/libavcodec/ac3dec_fixed.c:169: > > > > ffmpeg/libavcodec/ac3dec.c: In function ‘ac3_decode_init’: > > > > ffmpeg/libavcodec/ac3dec.c:213: warning: ‘request_channels’ is > > > > deprecated (declared at ffmpeg/libavcodec/avcodec.h:2038) > > > > ffmpeg/libavcodec/ac3dec.c:215: warning: ‘request_channels’ is > > > > deprecated (declared at ffmpeg/libavcodec/avcodec.h:2038) > > > > /tmp/ccgKabta.s: Assembler messages: > > > > /tmp/ccgKabta.s:5229: Error: opcode not supported on this processor: > > > > mips32r2 (mips32r2) `dmult $25,$24' > > > > /tmp/ccgKabta.s:5231: Error: opcode not supported on this processor: > > > > mips32r2 (mips32r2) `dsrl $25,$25,32' > > > > > > > > [...] > > > > > > > > > > weird, i have no problem with this patch. all pass except some fate. > > > ./configure --enable-gpl --cc='ccache gcc' --enable-pthreads > > > --samples=/home/loongson/fate/ --enable-nonfree --enable-version3 > > > --assert-level=2 --cpu=loongson3a > > > > above was cross build for non loongson MIPS > > with mips-linux-gnu-gcc-4.4 (Debian 4.4.5-8) 4.4.5 > > it works before the patch but not afterwards > > > > > > after the patch > > HAVE_LOONGSON3=yes > > > > [...] > > mips-linux-gnu-gcc-4.4 is not compatible with loongson OS FC-19, because the > FC-19's API is O32. you could not use odd register of loongson cpu in O32 > mode. > i do the test of cross-build in my x86 using our cross-compiler > gcc-4.8.3-d197-o32-loongson with configure below:
its build on x86 linux for imgtec MIPS, your patch breaks that [...] > what configure do you use when cross build? ./configure --cross-prefix=/usr/mips-linux-gnu/bin/ --cc='ccache mips-linux-gnu-gcc-4.4' --arch=mips --target-os=linux --enable-cross-compile && make -j12 [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Republics decline into democracies and democracies degenerate into despotisms. -- Aristotle
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