As discussed with the FreeBSD gcc ports maintainer, building the gcc-5-branch with libc++ requires standard C++ headers to be included *before* gcc/system.h, otherwise the redefinition of abort() to fancy_abort() will cause trouble.
In trunk r235362, most gcc C++ sources were updated to define INCLUDE_xxx macros before including gcc/system.h, which fixes the incompatibility with libc++. However, this revision is most likely too disruptive to backport to the gcc-5-branch. Attached is the patch which has been used in the FreeBSD gcc5 port (see also https://bugs.freebsd.org/216266 ). Proposed ChangeLog entry: 2017-01-31 Dimitry Andric <d...@freebsd.org> * system.h: For C++, always include <new>. * graphite-isl-ast-to-gimple.c: Include standard C++ headers before system.h. * auto-profile.c: Likewise. Also remove string.h, since it is already included in system.h. -Dimitry
gcc5-cxx-includes-1.diff
Description: Binary data
signature.asc
Description: Message signed with OpenPGP using GPGMail
