libcxx @3.7.0 fails building on 10.6.8

[udbraumann]

While upgrading libcxx from 3.6.0_0 to 3.7.0_0 I get the following trouble:

:info:build + /opt/local/bin/clang++-mp-3.4 -c -g -Os -arch x86_64 -nostdinc++ -std=c++11 -U__STRICT_ANSI__ -I../include ../src/exception.cpp
:info:build In file included from ../src/exception.cpp:20:
:info:build /usr/include/cxxabi.h:21:10: fatal error: '__cxxabi_config.h' file not found
:info:build #include <__cxxabi_config.h>
:info:build          ^
:info:build 1 error generated.
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_libcxx/libcxx/work/libcxx-3.7.0.src/lib" && ./buildit all
:info:build Exit code: 1

A brief search inside /opt/local/var/macports/build confirmed that indeed __cxxabi_config.h is missing. The question remains where this file is being found on more modern platforms.

[gnw3]

On OS X Mavericks, /usr/include/cxxabi.h does not have the #include <__cxxabi_config.h>. On 10.6.8, the /usr/include/cxxabi.h that references __cxxabi_config.h seems to come from libcxxabi. See ​http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/include/__cxxabi_config.h?revision=228363&view=markup which says "(note: we will have to ship this header).". A workaround is to copy the file from llvm.org to /usr/include.

[jeremyhu (Jeremy Huddleston Sequoia)]

I fixed this at some point. Please update and try again.

[udbraumann]

Thanks, builds fine now.