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2011/2/9 Ryan Hill <dirtyepic@g.o> |
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> On Tue, 08 Feb 2011 09:52:55 +0100 |
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> "Paweł Hajdan, Jr." <phajdan.jr@g.o> wrote: |
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> |
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> > It seems that with glibc-2.13 there are some serious compatibility |
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> > issues. There are good warnings on the planet |
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> > (http://psykil.livejournal.com/340806.html), but not every ~arch user |
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> > reads the planet, so how about creating news item with detailed |
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> > instructions how to ensure smooth glibc-2.13 update or recover a hosed |
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> > system? |
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> |
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> We've blocked prelink in the ebuild so if a user is able to sync they're |
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> either not going to be affected or already have been. |
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> |
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> Also I've the strong suspect that these changes: |
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* New optimized string functions for x86-64: strnlen (SSE2), |
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strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2) |
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Implemented by Ulrich Drepper. |
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Interact badly with strong optimizations like these |
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CFLAGS="-O2 -march=core2 -pipe" |
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CFLAGS="${CFLAGS} -msse4.1 --param l1-cache-size=32 --param |
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l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=core2" # native |
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CFLAGS="${CFLAGS} -fgcse-after-reload -fpredictive-commoning |
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-ftree-vectorize -funswitch-loops" # O3 - -finline-functions -fipa-cp-clone |
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CFLAGS="${CFLAGS} -fgraphite-identity -floop-block -floop-interchange |
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-floop-strip-mine" # graphite & co (-fira-loop-pressure no good amd64) |
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using gcc-4.5.2 |
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Since the upgrade I do get portage emerging text files .sh, .conf and such |
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as file of the exact same size but filled of \0, luckily most upgrade fails. |
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cpu is: |
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model name : Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz |
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca |
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cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm |
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constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 |
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monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts |
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tpr_shadow vnmi flexpriority |
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I've masked glibc-2.13, also I'm not filing a bug, because of non-usual |
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CFLAGS and because I'm not totally sure is glibc related. |
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