From 3bc43753e54901c6e4825e549755af8bc5ab8f53 Mon Sep 17 00:00:00 2001
From: Christopher Meiklejohn <christopher.meiklejohn@gmail.com>
Date: Thu, 26 Feb 2015 12:34:29 -0500
Subject: [PATCH] Remove -m64 flag.

On 64-bit Linux, remove the emulation mode flag, given -m64 is an
invalid emulation mode on 64-bit Linux.

Example compilation from Basho's erlang_js on Linux:

```
ld: unrecognised emulation mode: 64
Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 i386linux elf_l1om elf_k1om i386pep i386pe
make[4]: *** [Linux_All_OPT.OBJ/libjs.so] Error 1
```
---
 src/rebar_port_compiler.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rebar_port_compiler.erl b/src/rebar_port_compiler.erl
index 6730849..5855589 100644
--- a/src/rebar_port_compiler.erl
+++ b/src/rebar_port_compiler.erl
@@ -607,7 +607,7 @@ default_env() ->
      %% Linux specific flags for multiarch
      {"linux.*-64$", "CFLAGS", "-m64 $CFLAGS"},
      {"linux.*-64$", "CXXFLAGS", "-m64 $CXXFLAGS"},
-     {"linux.*-64$", "LDFLAGS", "-m64 $LDFLAGS"},
+     {"linux.*-64$", "LDFLAGS", "$LDFLAGS"},
 
      %% OS X Leopard flags for 64-bit
      {"darwin9.*-64$", "CFLAGS", "-m64 $CFLAGS"},