commit 9b59d84c5d55a30b4b87f42d1de63d1c4b77037e
author Daniel Dunbar <daniel@zuster.org> Fri Apr 10 21:00:07 2009 +0000
committer Daniel Dunbar <daniel@zuster.org> Fri Apr 10 21:00:07 2009 +0000
tree 7daf403b54d12bda4697a061bd3746081daee2c7
parent 179cfb1201fb5a1e80f0f65abab334f414210a73

Honor MACOSX_DEPLOYMENT_TARGET environment variable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68822 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Driver/ToolChains.cpp

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 975a6c1..87927f8 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -20,6 +20,8 @@
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/System/Path.h"
 
+#include <cstdlib> // ::getenv
+
 using namespace clang::driver;
 using namespace clang::driver::toolchains;
 
@@ -152,8 +154,14 @@
     // Chose the default version based on the arch.
     //
     // FIXME: This will need to be fixed when we merge in arm support.
+
+    // Look for MACOSX_DEPLOYMENT_TARGET, otherwise use the version
+    // from the host.
+    const char *Version = ::getenv("MACOSX_DEPLOYMENT_TARGET");
+    if (!Version)
+      Version = MacosxVersionMin.c_str();
     const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ);
-    DAL->append(DAL->MakeJoinedArg(0, O, MacosxVersionMin.c_str()));
+    DAL->append(DAL->MakeJoinedArg(0, O, Version));
   }
   
   for (ArgList::iterator it = Args.begin(), ie = Args.end(); it != ie; ++it) {