Am Montag, den 01.06.2015, 07:05 +0200 schrieb Fabian Greffrath: > The main difference between the packages in wheezy and jessie is that > the former is not built with SSE instructions at all. So, it seems that > we have not intriduced a bug, but merely uncovered a bug that was well > hidden before, because the code path in question was never enabled.
This is from the diff of both build logs (wheezy and jessie) during the ./configure phase: @@ -440,9 +566,9 @@ checking sys/time.h presence... yes checking for sys/time.h... yes checking for unistd.h... (cached) yes -checking xmmintrin.h usability... no -checking xmmintrin.h presence... no -checking for xmmintrin.h... no +checking xmmintrin.h usability... yes +checking xmmintrin.h presence... yes +checking for xmmintrin.h... yes checking linux/soundcard.h usability... yes checking linux/soundcard.h presence... yes checking for linux/soundcard.h... yes [...] @@ -516,11 +642,12 @@ checking if dynamic linking of the frontends is requested... yes checking glibc mathinline bug... no checking for termcap... yes -checking if I have to build the internal vector lib... no +checking if I have to build the internal vector lib... yes checking for nasm... /usr/bin/nasm checking for assembler routines for this processor type... yes checking for additional optimizations... full checking for debug options... no +checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating Makefile config.status: creating libmp3lame/Makefile I have no idea why xmmintrin.h was not detected on wheezy, but this is clearly the reason why different code paths have been chosen between wheezy and jessie and why the bug is only encountered in the latter. - Fabian
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