From 510d8a8dd8d19436fa9d4126a5e7f4f2ef0ded98 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Fri, 18 Sep 2009 08:14:46 +0000
Subject: [PATCH] Lift getMacosxVersionMin out into Darwin ToolChain.

llvm-svn: 82210
---
 clang/lib/Driver/ToolChains.cpp | 15 +++++++++++++++
 clang/lib/Driver/ToolChains.h   |  4 ++++
 clang/lib/Driver/Tools.cpp      | 14 +-------------
 3 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index deb06720f497..ce4fc1eea3d9 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -154,6 +154,21 @@ void Darwin::AddLinkSearchPathArgs(const ArgList &Args,
                                        "/../../.."));
 }
 
+void Darwin::getMacosxVersionMin(const ArgList &Args,
+                                 unsigned (&Res)[3]) const {
+  if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ)) {
+    bool HadExtra;
+    if (!Driver::GetReleaseVersion(A->getValue(Args), Res[0], Res[1], Res[2],
+                                   HadExtra) ||
+        HadExtra) {
+      const Driver &D = getHost().getDriver();
+      D.Diag(clang::diag::err_drv_invalid_version_number)
+        << A->getAsString(Args);
+    }
+  } else
+    return getMacosxVersion(Res);
+}
+
 DerivedArgList *Darwin::TranslateArgs(InputArgList &Args,
                                       const char *BoundArch) const {
   DerivedArgList *DAL = new DerivedArgList(Args, false);
diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index fc3201980396..aebc8fae4e78 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -91,6 +91,10 @@ public:
     Res[2] = DarwinVersion[1];
   }
 
+  /// getMacosxVersionMin - Get the effective -mmacosx-version-min, which is
+  /// either the -mmacosx-version-min, or the current version if unspecified.
+  void getMacosxVersionMin(const ArgList &Args, unsigned (&Res)[3]) const;
+
   const char *getMacosxVersionStr() const {
     return MacosxVersionMin.c_str();
   }
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 104d3a3567d7..ca7baef76d13 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1929,19 +1929,7 @@ void darwin::Link::ConstructJob(Compilation &C, const JobAction &JA,
   CmdArgs.push_back(Output.getFilename());
 
   unsigned MacosxVersionMin[3];
-  if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ)) {
-    bool HadExtra;
-    if (!Driver::GetReleaseVersion(A->getValue(Args), MacosxVersionMin[0],
-                                   MacosxVersionMin[1], MacosxVersionMin[2],
-                                   HadExtra) ||
-        HadExtra) {
-      const Driver &D = getToolChain().getHost().getDriver();
-      D.Diag(clang::diag::err_drv_invalid_version_number)
-        << A->getAsString(Args);
-    }
-  } else {
-    getDarwinToolChain().getMacosxVersion(MacosxVersionMin);
-  }
+  getDarwinToolChain().getMacosxVersionMin(Args, MacosxVersionMin);
 
   if (!Args.hasArg(options::OPT_A) &&
       !Args.hasArg(options::OPT_nostdlib) &&