/usr/src/gcc-4.7/debian/patches/gold-and-ld-doc.diff is in gcc-4.7-source 4.7.4-3ubuntu12.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | # DP: Enable both gold and ld in a single toolchain (documentation).
2012-11-28 Nick Clifton <nickc@redhat.com>
Matthias Klose <doko@debian.org>
Doug Kwan <dougkwan@google.com>
H.J. Lu <hongjiu.lu@intel.com>
* collect2.c (main): Support -fuse-ld=bfd and -fuse-ld=gold.
* exec-tool.in: Likewise.
* common.opt: Add fuse-ld=bfd and fuse-ld=gold.
* gcc.c (LINK_COMMAND_SPEC): Pass -fuse-ld=* to collect2.
* opts.c (comman_handle_option): Ignore -fuse-ld=bfd and
-fuse-ld=gold.
* doc/invoke.texi: Document -fuse-ld=bfd and -fuse-ld=gold.
--- a/src/gcc/doc/invoke.texi
+++ b/src/gcc/doc/invoke.texi
@@ -425,7 +425,7 @@ Objective-C and Objective-C++ Dialects}.
-funit-at-a-time -funroll-all-loops -funroll-loops @gol
-funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops @gol
-fvariable-expansion-in-unroller -fvect-cost-model -fvpt -fweb @gol
--fwhole-program -fwpa -fuse-linker-plugin @gol
+-fwhole-program -fwpa -fuse-ld=@var{linker} -fuse-linker-plugin @gol
--param @var{name}=@var{value}
-O -O0 -O1 -O2 -O3 -Os -Ofast -Og}
@@ -8419,6 +8419,12 @@ the comparison operation before register allocation is complete.
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
+@item -fuse-ld=gold
+Use the @command{gold} linker instead of the default linker.
+
+@item -fuse-ld=bfd
+Use the @command{ld.bfd} linker instead of the default linker.
+
@item -fcprop-registers
@opindex fcprop-registers
After register allocation and post-register allocation instruction splitting,
|