From 3af0e63bcc7e04d36719c338f4cbbff4f256aa05 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Tue, 18 Sep 2012 20:32:38 -0300
Subject: Makes use of -rpath conditional on MacOSX version. Should fix #88,
 feedback welcome.

---
 src/luarocks/build/builtin.lua |  4 +++-
 src/luarocks/cfg.lua           | 12 ++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/luarocks/build/builtin.lua b/src/luarocks/build/builtin.lua
index fc4c2c04..485ff370 100644
--- a/src/luarocks/build/builtin.lua
+++ b/src/luarocks/build/builtin.lua
@@ -143,7 +143,9 @@ function run(rockspec)
       compile_library = function (library, objects, libraries, libdirs)
          local extras = { unpack(objects) }
          add_flags(extras, "-L%s", libdirs)
-         add_flags(extras, "-Wl,-rpath,%s:", libdirs)
+         if cfg.gcc_rpath then
+            add_flags(extras, "-Wl,-rpath,%s:", libdirs)
+         end
          add_flags(extras, "-l%s", libraries)
          if cfg.is_platform("cygwin") then
             add_flags(extras, "-l%s", {"lua"})
diff --git a/src/luarocks/cfg.lua b/src/luarocks/cfg.lua
index 263af063..e0b4060a 100644
--- a/src/luarocks/cfg.lua
+++ b/src/luarocks/cfg.lua
@@ -324,6 +324,7 @@ if detected.unix then
    defaults.platforms = { "unix" }
    defaults.variables.CC = "gcc"
    defaults.variables.LD = "gcc"
+   defaults.gcc_rpath = true
    defaults.variables.LIBFLAG = "-shared"
    defaults.external_deps_patterns = {
       bin = { "?" },
@@ -362,10 +363,17 @@ if detected.macosx then
    defaults.external_lib_extension = "dylib"
    defaults.arch = "macosx-"..proc
    defaults.platforms = {"unix", "bsd", "macosx"}
-   defaults.variables.CC = "export MACOSX_DEPLOYMENT_TARGET=10.3; gcc"
-   defaults.variables.LD = "export MACOSX_DEPLOYMENT_TARGET=10.3; gcc"
    defaults.variables.LIBFLAG = "-bundle -undefined dynamic_lookup -all_load"
    defaults.variables.STATFLAG = "-f '%A'"
+   local version = io.popen("sw_vers -productVersion"):read("*l")
+   version = tonumber(version and version:match("^[^.]+%.([^.]+)")) or 3
+   if version >= 5 then
+      version = 5
+   else
+      defaults.gcc_rpath = false
+   end
+   defaults.variables.CC = "export MACOSX_DEPLOYMENT_TARGET=10."..version.."; gcc"
+   defaults.variables.LD = "export MACOSX_DEPLOYMENT_TARGET=10."..version.."; gcc"
 end
 
 if detected.linux then
-- 
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