[gtk-osx] Ensure that ld is the one from the configured toolchain.

[John Ralls <jralls src gnome org>]

commit e8a9666f09095e692c7e4ee2efb08272cb5e9e1d
Author: John Ralls <jralls ceridwen us>
Date:   Sun Dec 6 09:25:46 2015 -0800

    Ensure that ld is the one from the configured toolchain.

 jhbuildrc-gtk-osx |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/jhbuildrc-gtk-osx b/jhbuildrc-gtk-osx
index 2151979..1068507 100644
--- a/jhbuildrc-gtk-osx
+++ b/jhbuildrc-gtk-osx
@@ -329,7 +329,8 @@ def setup_sdk(target, sdk_version, architectures=[_default_arch]):
         os.environ["OBJC"] = os.path.join(_toolpath, "gcc-4.2")
         os.environ["CXX"] = os.path.join(_toolpath, "g++-4.2")
 
-            
+    os.environ['LD'] = os.path.join(_toolpath, "ld")
+        
     # Set the -arch flags for everything we're building.
     #
     for arch in architectures: