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| author | Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> | 2009-10-02 22:10:38 +0200 |
|---|---|---|
| committer | Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> | 2009-10-02 22:10:38 +0200 |
| commit | 443f51a2dcaec99457e5797758c65e5c6c1d3664 (patch) | |
| tree | bc547f4d8d24309bea92d91efd7ee42cffe4e427 /docs | |
| parent | 7280facf183f25e49446588da64b4a0b8cf13ca6 (diff) | |
| download | crosstool-ng-443f51a2dcaec99457e5797758c65e5c6c1d3664.tar.gz crosstool-ng-443f51a2dcaec99457e5797758c65e5c6c1d3664.tar.bz2 crosstool-ng-443f51a2dcaec99457e5797758c65e5c6c1d3664.zip | |
libc/glibc: fix building for seemingly native toolchains
Build glibc with -O2 as a fix/workaround to building
seemingly-native toolchains.
See:
- docs/overview.txt
- docs/known-issues.txt
- http://sourceware.org/ml/crossgcc/2009-09/msg00055.html
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/known-issues.txt | 6 | ||||
| -rw-r--r-- | docs/overview.txt | 16 |
2 files changed, 20 insertions, 2 deletions
diff --git a/docs/known-issues.txt b/docs/known-issues.txt index 3c7eaab5..757939f2 100644 --- a/docs/known-issues.txt +++ b/docs/known-issues.txt @@ -51,8 +51,10 @@ Fix: None known. Workaround: - If this happens for you, stick with glibc-2.6.1 for now. - Or investigate! :-) + It seems that using -O2 in the CFLAGS fixes the problem. It has been + confirmed in the following threads: + http://sourceware.org/ml/crossgcc/2009-09/msg00055.html (for glibc) + http://sourceware.org/ml/crossgcc/2009-10/msg00001.html (for eglibc) -------------------------------- Symptoms: diff --git a/docs/overview.txt b/docs/overview.txt index 3b100a18..8d9a6f04 100644 --- a/docs/overview.txt +++ b/docs/overview.txt @@ -28,6 +28,7 @@ Running crosstool-NG Tools wrapper Using the toolchain Toolchain types + Seemingly-native toolchains Internals Makefile front-end Kconfig parser @@ -590,6 +591,21 @@ anyway!) were all being hashed out, Canada had three national political parties. http://en.wikipedia.org/wiki/Cross_compiler +Seemingly-native toolchains | +----------------------------+ + +Seemingly-native toolchains are toolchains that target the same architecture +as the one it is built on, and on which it will run, but the machine tuple +may be different (eg i686 vs. i386, or x86_64-unknown-linux-gnu vs. +x86_64-pc-linux-gnu). This also applies if the target architecture is of the +same kind (eg. x86 vs. x86_64, or ppc vs. ppc64). + +Such toolchain is tricky to build, as the configure scripts may incorrectly +assume that files (headers and libs) from the build (or host) machine can be +used by the cross-compiler it is going to build. The problem seems to arise +only with glibc (and eglibc?) starting with version 2.7. + + _____________ / Internals / |