[PATCH, 4.4] ARM PR42503: backport libgcc.so linker script support

[Richard Earnshaw]

On Tue, 2009-12-29 at 23:55 +0100, Mikael Pettersson wrote:
> 4.5 added support for targets to install libgcc.so as a linker
> script that sources in both the shared and the static libgcc.
> This is needed when shared libraries like libstdc++ use routines
> that the target only provides in the static libgcc.  See PR40134.
> 
> This patch backports the libgcc.so linker script support and
> enables it for arm*-*-linux-*eabi.  This fixes PR42503: a recent
> regression in 4.4 for ARM where a backport of __sync_syncronize()
> support broke libjava because libstdc++ now refers to a routine
> that only exists in the static libgcc.
> 
> Regression tested on {i686,powerpc64}-linux and armv5tel-linux-gnueabi.
> 
> Ok for 4.4? (I don't have write access.)
> 
> gcc/
> 
> 2009-12-29  Mikael Pettersson  <mikpe@it.uu.se>
> 
> 	PR target/42503
> 
> 	Backport from mainline:
> 
> 	2009-09-09  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* config/t-slibgcc-elf-ver (SHLIB_MAKE_SOLINK, SHLIB_INSTALL_SOLINK):
> 	New variables.
> 	(SHLIB_LINK, SHLIB_INSTALL): Use them.
> 	* config/t-slibgcc-libgcc: New file.
> 
> 	2009-10-19  Matthias Klose  <doko@ubuntu.com>
> 
> 	PR target/40134
> 	* config.gcc (arm*-*-linux-*eabi): Use config/t-slibgcc-libgcc.

OK

Don't forget that the Copyright year should be amended to 2010.

R.