Hi, I just found out that gcc is compiled with --with-arch-32=i586, which effectively means it builds with -march=i586 by default (and that it still claims an i486-linux-gnu target).
I'm wondering. Is the project at large aware that we're not building for i486, but for i586 ? That even the maintainer doesn't know why for sure[1] and that no changelog entry documents when or why that happened? (nothing in debian/changelog, and the corresponding svn commit says "Update to SVN 20100625 (r161383) from the gcc-4_5-branch.") And that as far as I can see, this hasn't been discussed or documented in the released notes? Mike 1. See the following message from bug 609690: On Tue, Jan 11, 2011 at 05:20:32PM +0100, Matthias Klose wrote: > On 11.01.2011 16:38, Petr Salinger wrote: > >Package: gcc-4.4 > >Version: 4.4.5-8 > > > >Hi, > > > >the current gcc-4.4 uses (tested on i386/4.4.5-6 and kfreebsd-i386/4.4.5-8) > >as a default arch i586. > >COLLECT_GCC_OPTIONS='-v' '-dD' '-E' '-mtune=generic' '-march=i586' > > > >echo "" | gcc-4.4 -dD -x c -E - | grep 86 > > > >#define __DBL_MAX__ 1.7976931348623157e+308 > >#define __i386 1 > >#define __i386__ 1 > >#define i386 1 > >#define __i586 1 > >#define __i586__ 1 > > > >It is due to debian/rules2: > > > >ifneq (,$(filter $(DEB_TARGET_ARCH), amd64 i386 kfreebsd-i386 > >kfreebsd-amd64)) > >#CONFARGS += --with-arch-32=i486 > >ifeq ($(distribution),Ubuntu) > >CONFARGS += --with-arch-32=i686 > >else > >CONFARGS += --with-arch-32=i586 > >endif > >endif > > > > > >I believe, that even plain i486 have to be supported, > >also changelog claims that default should still be i486. > > yes, I think I did change that to avoid libgomp failures, which > requires i586, and not just i486. Not sure what to do about that > for squeeze. > > $ apt-cache rdepends libgomp1 | wc -l > 77 > > So all these packages would need setting of the -march flag explicitly. > > There are other packages which do require i586, like OpenJDK. > > > -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110515120800.ga10...@glandium.org
