Bug 387309 – sys-devel/clang - fix corrected parsing of the path given by --with-cxx-include-root when USE flag system-cxx-headers is used

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description stephan wezel 2011-10-16 17:55:53 UTC]

clang in trunk for v3.0 has changed its handling of the path given by the configure option --with-cxx-include-root

Due this change trying to compile a program with clang fails because the linker doesn't find the crtbegin.o file

Attached is a patch which fix this issue. The patch was made against subversion revision 142115 of the release_30 branche of clang

Reproducible: Always

[Comment 1 stephan wezel 2011-10-16 17:57:00 UTC]

Created attachment 289965 [details, diff]
fixes the cxx_include_root path parsing under gentoo

[Comment 2 Bernard Cafarelli 2011-11-08 13:53:05 UTC]

I should have time soon to test 3.0 rc1 so I will probably get this bug too, but I think modifying line 95 of clang-9999.ebuild like that should do the trick:

CONF_FLAGS="${CONF_FLAGS} --with-cxx-include-root=${CXX_PATH}

(dropping the include/g++-v4)

[Comment 3 Michał Górny 2011-11-08 19:31:50 UTC]

(In reply to comment #2)
> I should have time soon to test 3.0 rc1 so I will probably get this bug too,
> but I think modifying line 95 of clang-9999.ebuild like that should do the
> trick:
> 
> CONF_FLAGS="${CONF_FLAGS} --with-cxx-include-root=${CXX_PATH}
> 
> (dropping the include/g++-v4)

Tried that on my -9999 and didn't help.

[Comment 4 Michał Górny 2011-11-08 19:32:29 UTC]

*** Bug 388801 has been marked as a duplicate of this bug. ***

[Comment 5 Bernard Cafarelli 2011-11-09 14:06:20 UTC]

Indeed the problem only is in ToolChains.cpp.

Thanks Stephan for the pointer to the problem and the patch, I'll add it to both 3.0_rc1 and 9999 (3.0 will use it anyways)

Of course on the long term, implementing the suggested CXX_GCC_* variables upstream (mentioned in the FIXME) would be cleanier (or an easier way to add new GCC versions, or a configuration file somewhere...)

[Comment 6 Bernard Cafarelli 2011-11-09 15:40:57 UTC]

I'll do more work later on llvm/clang ebuilds, but in the meantime, 3.0_rc1 is available and 9999 updated with the patch.

Thanks again for the report and fix Stephan!