On Thu, Nov 30, 2006 at 03:32:16PM +0100, Daniel Kobras wrote: >Package: libpng12-dev >Version: 1.2.13-4 >Severity: grave >Justification: breaks build-depending packages > >Functions png_get_asm_flags(), png_set_asm_flags(), and possible some >more are part of libpng's API, but are missing from libpng's list of >exported symbols on amd64. I've checked that it's present on i386 and ia64. >This problem surfaced because libpng recently switched to using >MMX-optimized routines on amd64 (or at least started telling to do so), >and the two mentioned functions are required to ensure thread-safety in >asm-optimized code (cf. libpng(3)). > >At least imagemagick and graphicsmagick fail to link on amd64 due to >this problem, but as the affected code was taken from libpng's man >page, there might be more FTBFS errors lurking. If you disagree on >the RC-ness of this issue, please let me know. I can hack around it in >my packages for Debian's purposes, but not in a generic way. > >Regards, > >Daniel.
Thank you for the bug report. I compared the amd64 and i386 pbuilder logs: >--- /tmp/libpng_1.2.13-4_amd64.log 2006-12-01 09:08:36.000000000 +1100 >+++ /tmp/libpng_1.2.13-4_i386.log 2006-12-01 09:08:13.000000000 +1100 >@@ -1,12 +1,12 @@ >-Wed, 22 Nov 2006 14:55:22 +1100 >-d5 amd64 linda 0.3.24 lintian 1.23.25 pbuilder 0.160 piuparts 0.20-3 >+Tue, 21 Nov 2006 20:36:05 +1100 >+elida i386 linda 0.3.24 lintian 1.23.25 pbuilder 0.160 piuparts 0.20-3 > > I: using fakeroot in build. >-pbuilder-buildpackage/amd64 $Id: pbuilder-buildpackage-funcs,v 1.31 >2006/05/30 23:45:45 dancer Exp $ >+pbuilder-buildpackage/i386 $Id: pbuilder-buildpackage-funcs,v 1.31 2006/05/30 >23:45:45 dancer Exp $ > $Id: pbuilder-buildpackage,v 1.127 2006/08/15 13:14:25 dancer Exp $ >[...] > checking for pow... no > checking for pow in -lm... yes > checking for zlibVersion in -lz... yes >-checking if assembler code in pnggccrd.c can be compiled... no >+checking if assembler code in pnggccrd.c can be compiled... yes The configure script cannot compile assembler code in pnggccrd.c on amd64, whereas on i386 it can. Best Regards, Aníbal Monsalve Salazar -- http://v7w.com/anibal
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