Date: Tue, 23 Mar 2010 13:19:23 -0500 From: Scot Hetzel <swhetzel@gmail.com> To: Alexander Best <alexbestms@wwu.de> Cc: freebsd-current@freebsd.org Subject: Re: build failures after stdlib update Message-ID: <790a9fff1003231119h5a91d9c6kdc5d50de7ec43eff@mail.gmail.com> In-Reply-To: <permail-20100323093417f0889e8400001227-a_best01@message-id.uni-muenster.de> References: <permail-20100323093417f0889e8400001227-a_best01@message-id.uni-muenster.de>
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On Tue, Mar 23, 2010 at 4:34 AM, Alexander Best <alexbestms@wwu.de> wrote: > i don't think conf/112997 and the issue where gcc segfaults are directly > related to each other: > > 1. if CPUTYPE is set to 'native' your patch uses `gcc -v -x c -E -mtune=native > /dev/null -o /dev/null 2>&1 | grep mtune | sed -e 's/.*mtune=//'` to determine > gcc's idea of the appropriate -mtune value. that command however segfaults. so > this doesn't really help. The command runs correctly with a properly built gcc: # gcc -v -x c -E -mtune=native /dev/null -o /dev/null 2>&1 | grep mtune | sed -e 's/.*mtune=//' generic > > 2. i wasn't able to reproduce your `make -V MACHINE_CPU -DCPUTYPE=native` > examples. for me `make` prints the same no matter what CPUTYPE is set to: > > otaku% make -V MACHINE_CPU -DCPUTYPE=native > amd64 sse2 sse > otaku% make -V MACHINE_CPU -DCPUTYPE=nocona > amd64 sse2 sse > otaku% make -V MACHINE_CPU -DCPUTYPE=i386 > amd64 sse2 sse > otaku% make -V MACHINE_CPU -DCPUTYPE=lalalala > amd64 sse2 sse > > ..oh and of course i ran these commands with no CPUTYPE set in make.conf. ;) > If I run the same commands as above, I get similar results: # make -V MACHINE_CPU -DCPUTYPE=native amd64 sse2 sse # make -V MACHINE_CPU -DCPUTYPE=k8 amd64 sse2 sse # make -V MACHINE_CPU -DCPUTYPE=nocona amd64 sse2 sse # make -V MACHINE_CPU -DCPUTYPE=i386 amd64 sse2 sse # make -V MACHINE_CPU -DCPUTYPE=lala amd64 sse2 sse But if I run the commands without the "-D", it shows the problem correctly: # make -V MACHINE_CPU CPUTYPE=native unknown amd64 sse2 sse mmx # make -V MACHINE_CPU CPUTYPE=k8 k8 3dnow amd64 sse2 sse mmx # make -V MACHINE_CPU CPUTYPE=nocona sse3 amd64 sse2 sse mmx # make -V MACHINE_CPU CPUTYPE=i386 unknown amd64 sse2 sse mmx # make -V MACHINE_CPU CPUTYPE=lalala unknown amd64 sse2 sse mmx # grep CPUTYPE /etc/make.conf /etc/src.conf grep: /etc/src.conf: No such file or directory This was run under a Feb 28th -CURRENT. Now here is something strange. Defining CPUTYPE in /etc/src.conf has no effect on the output of MACHING_CPU. /etc/src.conf: 1 lines, 11 characters. # make -V MACHINE_CPU ; grep CPUTYPE /etc/make.conf /etc/src.conf amd64 sse2 sse /etc/src.conf:CPUTYPE=k8 # make -V MACHINE_CPU ; grep CPUTYPE /etc/make.conf /etc/src.conf k8 3dnow amd64 sse2 sse mmx /etc/make.conf:CPUTYPE=k8 Scot
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