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My tendinitis flared up today, so I'm going to try to go offline for a week, and figured I should put up what I've got. I'm quite happy with the results of my little GCC_CORE_DIR change; combinations that were completely nuts before (gcc-4.0.0 + glibc-2.2.2) work, at least for x86.
Home page: http://kegel.com/crosstool/ Quick download: http://kegel.com/crosstool/crosstool-0.35.tar.gz Build results matrix: http://kegel.com/crosstool/crosstool-0.35/buildlogs/
0.35: crosstool.sh: * Added GCC_CORE_DIR environment variable; this lets you build glibc with an older gcc than the final gcc you're building. This required a new gcc patch, gcc-{3.4.3,4.0.0}/fix-fixincl.patch. * Modified gcc-{3.4.3,4.0.0}-glibc-2.2.2.dat to use gcc-2.95.3 to compile glibc. This fixes an obvious crash bug in static apps built by gcc-3.4.3-glibc-2.2.2, and lets you build gcc-4.0.0-glibc-2.2.2 toolchains, which didn't build at all without this. Note: the build matrix shows the improvement, but doesn't give you a clue that the older gcc was used; for that you have to peek at buildlogs/*.dat.txt file or all-dats.txt.
nptl support: * not merged yet, but updated patches for nptl support in contrib/crosstool-0.34-nptl.patch from ftp://ftp.realitydiluted.com/crosstools/crosstool-0.34/ thanks to Steven Hill.
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