2016-11-20 19:48 GMT+01:00 Andreas Cadhalpun <andreas.cadhal...@googlemail.com>: > On 20.11.2016 13:38, Carl Eugen Hoyos wrote: >> 2016-11-20 1:07 GMT+01:00 Andreas Cadhalpun >> <andreas.cadhal...@googlemail.com>: >>> gcc before gcc-5 reserves a register on x86_32 for the GOT, when PIE is >>> enabled. >>> >>> This fixes build failures due to: >>> error: 'asm' operand has impossible constraints >> >> Not reproducible with vanilla gcc 4.9.1 and gcc 4.4.6 so the patch is >> not ok as-is afaict. > > That's interesting. I just tried with gcc 4.8.4-1 and it works fine, too. > So this is probably a bug in gcc 4.9.2-10, which means we can't do anything > about it. > > Consider this patch dropped.
Thank you for doing the additional test. >> The tested (32bit) configure line here was: >> --enable-gpl --toolchain=hardened --disable-stripping --enable-shared >> >>> A build log of a failed build with gcc 4.9 is available at: >>> https://buildd.debian.org/status/fetch.php?pkg=ffmpeg&arch=i386&ver=7%3A3.2-2~bpo8%2B1&stamp=1478791165 >> >> Please consider to remove the following options from the configure line, >> they do lead to more user questions and make support more difficult: > > Can you elaborate on how this makes support more difficult? My experience is that users copy the effect-less configure options from distributions and ask on -users why they don't work. >> --disable-libtesseract >> --disable-libebur128 > > These could be dropped. They were just added to the jessie-backports > version, as those libraries are too old/unavailable there. Please do. >> --enable-sdl2 > > I'd rather not remove this. The thing is that sdl2 is autodetected, like sdl > used to be, but ffplay depends on it. How is that different from before? > When 3.2 switched to sdl2 the build silently worked, but didn't > produce ffplay, which I found annoying. But --enable-sdl2 made no difference at all, or do I misunderstand? >> Is --disable-stripping really useful? > > Yes. Thank you for explaining this! Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
