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Re: [patch] fix canadian cross compiles for *-elf targets (newlib)

From: Ralf Corsepius <ralf dot corsepius at rtems dot org>
To: Mike Frysinger <vapier at gentoo dot org>
Cc: gcc-patches at gcc dot gnu dot org, jie dot zhang at analog dot com, bernds_cb1 at t-online dot de, oyvind dot harboe at zylin dot com
Date: Sat, 24 Jan 2009 08:30:34 +0100
Subject: Re: [patch] fix canadian cross compiles for *-elf targets (newlib)
References: <200901231639.24754.vapier@gentoo.org>

Mike Frysinger wrote:

the fixed include changes (which i believe started with gcc-4.3, so this patch would be nice to have in the gcc-4.3 branch as well) broke canadian cross- compiles for *-elf targets. the patch below fixes it the same way other C libraries (like glibc) have been fixed ... that is, an explicit -isystem path is added for the include-fixed/ subdir after the include/ subdir.
i believe this is the same issue Ãyvind Harboe reported here:
http://gcc.gnu.org/ml/gcc-help/2008-09/msg00100.html
tested this patch with gcc-4.3.2 and the bfin-elf target when building a
toolchian to run under Windows:
build=x86_64-linux host=mingw32 target=bfin-elf

I am not in a position to approve this patch, but RTEMS has been using an identical patch for its gcc toolchains for quite some time ;)

=> Tested with Cross-building gcc/newlib centos/suse/fedora-<i386/x86_64->*rtems, Canadian Cross-building gcc/newlib mingw32->rtems and cygwin->rtems on Fedora-i386/x86_64

Ralf

References:
- [patch] fix canadian cross compiles for *-elf targets (newlib)
  - From: Mike Frysinger

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