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Hi, |
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I am just wondering why TLS is not enabled by default in glibc with |
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linuxthreads. Both Debian and Redhat enable it by default. |
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Also the Glibc INSTALL file states: |
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`--without-tls' |
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By default the C library is built with support for thread-local |
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storage if the used tools support it. By using `--without-tls' |
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this can be prevented though there generally is no reason since it |
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creates compatibility problems. |
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I realise it used to be the case that nvidia-glx would not work with it |
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but that is no longer the case. |
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It could be that you don't trust the build tools to work (binutils, |
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gcc); but I don't think that is any longer the case. |
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It is just with this multiple version glibc thing, I am trying to select |
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suitable flavours of glibc: |
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So far I am thinking of: |
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/lib - linuxthreads, kernel-version=2.2.5 no-tls |
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/lib/i686 - linuxthreads tls kernel-version=2.4.1 |
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/lib/tls - nptl tls kernel-version=2.6.0 |
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with the ld-linux.so in /lib being the one from |
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"linuxthreads tls kernel-version=2.4.1" (if any of the libraries have |
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TLS then the main ld-linux.so needs TLS) |
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This would mean 2.2 kernels will not run; but I don't think that is an |
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issue. |
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Sound ok? |
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Also I would like to see the CFLAGS in glibc upped, |
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Debian unstable uses: |
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-march=i686 -mcpu=i686 -g0 -O3 -fomit-frame-pointer |
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-D__USE_STRING_INLINES |
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for i686 optimised binaries; I would like to see the same possibility in |
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gentoo. Debian after all has always been seem to err on the side of |
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caution. |
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Stefan |
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-- |
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Stefan Jones <cretin@g.o> |
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Gentoo Linux |
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-- |
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gentoo-dev@g.o mailing list |
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