r228950 - in /trunk/gcc: ChangeLog config/darwin.h

[iains@gcc.gnu.org]

Author: iains
Date: Sun Oct 18 18:33:05 2015
New Revision: 228950

URL: https://gcc.gnu.org/viewcvs?rev=228950&root=gcc&view=rev
Log:
Revise Darwin's sysroot handling to be compatible with the clang toolchain.

gcc/
	* config/darwin.h (TARGET_SYSTEM_ROOT): Remove this from here,
	(HAVE_LD_SYSROOT): New.  (SYSROOT_SPEC): New. 
	(LINK_SYSROOT_SPEC): Revise to remove the default for target sysroot.
	(STANDARD_STARTFILE_PREFIX_1): New.
	(STANDARD_STARTFILE_PREFIX_2): New.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/darwin.h