[Bug bootstrap/52226] Trunk fails to bootstrap on Mac OS X.

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52226

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-13 11:17:33 UTC ---
(In reply to comment #3)
>     --enable-concept-checks \

You probably don't want this, some of the concept checks are incompatible with
C++11, you shouldn't enable them at configure time, you can still use them
later with -D_GLIBCXX_CONCEPT_CHECKS

>     --enable-decimal-float \
>     --enable-fully-dynamic-string \
>     --enable-libstdcxx-debug \
>     --enable-libstdcxx-time \

This implies you want to use C++11, so you probably don't want to permanently
enable concept checks.


>     --enable-multilib \
>     --enable-plugin \
>     --enable-lto \

If your build fails it's usually a good idea to try *removing* options to find
the smallest set that can reproduce the bug, instead you're adding more
options.

>     --enable-static \
>     --enable-shared \
>     --enable-threads \

These are redundant, you're explicitly setting default behaviour.

>     --enable-version-specific-runtime-libs

This is broken on x86_64 multilib

I don't think these are the cause of your problem, I just think you'll find it
easier to identify the real problem if you keep it simple instead of adding
loads of unnecessary complication.