From 71fcc4c096ec0b575522e4c2d0104ef7a71a13c5 Mon Sep 17 00:00:00 2001
From: Erik de Castro Lopo <erikd@mega-nerd.com>
Date: Thu, 12 Mar 2015 14:36:50 +1100
Subject: Use the gold linker for linux/ARM and android/ARM targets.

Fixes #8976 and #9873 by making use of the Binutils ld.gold
linker explicit whenever the target is linux/ARM or android/ARM.
This does not affect iOS where Apple provides its own linker.

In order to achieve this, we need to add `-fuse-ld=gold` to
the SettingsCCompilerLinkFlags setting and set
SettingsLdCommand to `ld.gold` (or `${target}-ld.gold` when
cross-compiling). In addition, simplifying the use of
`$(CONF_GCC_LINKER_OPTS_STAGEn)`.

This patch was tested by ensuring that the following worked
as expected:

  * Native builds on linux/x86_64 (nothing changed).
  * Native builds on linux/arm (and uses the gold linker).
  * Linux to linux/arm cross compiles (and uses the cross
    gold linker).

Contributions by Ben Gamari, Joachim Breitner and Reid Barton.

Reviewers: nomeata, bgamari, austin, rwbarton

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D715

GHC Trac Issues: #8976 #9873
---
 libffi/ghc.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libffi')

diff --git a/libffi/ghc.mk b/libffi/ghc.mk
index abbe87f23c..a5645de9ba 100644
--- a/libffi/ghc.mk
+++ b/libffi/ghc.mk
@@ -100,7 +100,7 @@ $(libffi_STAMP_CONFIGURE): $(TOUCH_DEP)
 	    NM=$(NM) \
 	    RANLIB=$(REAL_RANLIB_CMD) \
         CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -w" \
-        LDFLAGS="$(SRC_LD_OPTS) $(CONF_GCC_LINKER_OPTS_STAGE1) -w" \
+        LDFLAGS="$(SRC_LD_OPTS) -w" \
         "$(SHELL)" ./configure \
 	          --prefix=$(TOP)/libffi/build/inst \
 	          --libdir=$(TOP)/libffi/build/inst/lib \
-- 
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