From 25ab4468f3d8183a95f9fc86a72b95c43a4922e0 Mon Sep 17 00:00:00 2001
From: Hamidreza Soleimani <hamidreza.s@gmail.com>
Date: Sun, 6 Sep 2015 18:02:54 +0430
Subject: [PATCH] Add OS-aware CFLAGS and LDFLAGS to rebar script

---
 .gitignore          |  1 +
 rebar.config.script | 12 ++++++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index e34a527..0e4e6f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .rebar/
 c_src/*.o
+c_src/*.d
 config.log
 config.status
 ebin
diff --git a/rebar.config.script b/rebar.config.script
index 8f0211d..687162a 100644
--- a/rebar.config.script
+++ b/rebar.config.script
@@ -35,9 +35,17 @@ FlashHackFlag = case lists:keysearch(flash_hack, 1, Cfg) of
                         ""
                 end,
 
+{OSCFlags, OSLDFlags} = case os:type() of
+			    {unix, freebsd} ->
+				{" -I/usr/local/include",
+				 " -L/usr/local/lib"};
+			    _ ->
+				{"", ""}
+			end,
+
 Config = [{erl_opts, [debug_info, {src_dirs, [src, specs]}|Macros]},
-          {port_env, [{"CFLAGS", "$CFLAGS -g -O2 -Wall" ++ FlashHackFlag},
-                      {"LDFLAGS", "$LDFLAGS -lexpat"}]},
+          {port_env, [{"CFLAGS", "$CFLAGS -g -O2 -Wall" ++ OSCFlags ++ FlashHackFlag},
+                      {"LDFLAGS", "$LDFLAGS -lexpat" ++ OSLDFlags}]},
           {port_specs, [{"priv/lib/expat_erl.so", ["c_src/expat_erl.c"]}
                         | NIFPortSpec]}],
 %%io:format("xml configuration:~n  ~p~n", [Config]),