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On 2005-11-06 14:36:25 +0100 (Sun, Nov), Matt Z wrote: |
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> jak to jest z flaga OX? |
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> W pliku /etc/make.conf mam wpisane CFLAGS="-O3 -march=i686 -pipe" |
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> |
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> natomiast podczas kompilacji wielu programw widze cos takiego: |
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> gcc -D_REENTRANT -I../common -I../common -DHAVE_CONFIG_H -O -O2 |
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> -march=i686 -pipe -c -DPIC -fPIC -o |
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> |
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> dlaczego O3 nie jest uzywane? |
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|
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Wiele ebuildów filtruje flagi, wiedząc że niektóre kombinacje powodują |
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problemy w danym pakiecie. |
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|
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Zobacz np. /usr/portage/app-office/openoffice/openoffice-1.1.5.ebuild |
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linia 389: |
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|
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# Compile problems with these ... |
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filter-flags "-funroll-loops" |
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filter-flags "-fomit-frame-pointer" |
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filter-flags "-fprefetch-loop-arrays" |
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filter-flags "-fno-default-inline" |
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filter-flags "-fstack-protector" |
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filter-flags "-ftracer" |
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append-flags "-fno-strict-aliasing" |
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replace-flags "-O3" "-O2" |
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replace-flags "-Os" "-O2" |
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|
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if [ "$(gcc-version)" == "3.2" ]; then |
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einfo "You use a buggy gcc, so replacing -march=pentium4 with -march=pentium3" |
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replace-flags "-march=pentium4" "-march=pentium3 -mcpu=pentium4" |
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fi |
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|
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.. i tak dalej. |
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-- |
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No virus found in this outgoing message. |
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Checked by 'grep -i virus $MESSAGE' |
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Trust me. |
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