From 16a1353031cc949aa11ec5b0235260c2417e6092 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Tue, 23 Feb 2010 10:00:53 +0000
Subject: [PATCH] Add LLVM{CC,CXX} make variables, which specify the configured
 path the LLVM capable compilers (which could be llvm-gcc or clang).

llvm-svn: 96935
---
 llvm/Makefile.rules          | 21 +++++++++++++++++++++
 llvm/docs/MakefileGuide.html |  4 ++++
 2 files changed, 25 insertions(+)

diff --git a/llvm/Makefile.rules b/llvm/Makefile.rules
index 215df8628c96..649f8038bb60 100644
--- a/llvm/Makefile.rules
+++ b/llvm/Makefile.rules
@@ -494,6 +494,27 @@ LLVMLibDir  := $(LLVM_OBJ_ROOT)/$(BuildMode)/lib
 LLVMToolDir := $(LLVM_OBJ_ROOT)/$(BuildMode)/bin
 LLVMExmplDir:= $(LLVM_OBJ_ROOT)/$(BuildMode)/examples
 
+#--------------------------------------------------------------------
+# LLVM Capable Compiler
+#--------------------------------------------------------------------
+
+ifeq ($(LLVMCC_OPTION),llvm-gcc)
+  LLVMCC := $(LLVMGCC)
+  LLVMCXX := $(LLVMGXX)
+else
+  ifeq ($(LLVMCC_OPTION),clang)
+    ifneq ($(CLANGPATH),)
+      LLVMCC := $(CLANGPATH)
+      LLVMCXX := $(CLANGXXPATH)
+    else
+      ifeq ($(ENABLE_BUILT_CLANG),1)
+        LLVMCC := $(LLVMToolDir)/clang
+        LLVMCXX := $(LLVMToolDir)/clang++
+      endif
+    endif
+  endif
+endif
+
 #--------------------------------------------------------------------
 # Full Paths To Compiled Tools and Utilities
 #--------------------------------------------------------------------
diff --git a/llvm/docs/MakefileGuide.html b/llvm/docs/MakefileGuide.html
index a9c0725f2156..b1f8292831ee 100644
--- a/llvm/docs/MakefileGuide.html
+++ b/llvm/docs/MakefileGuide.html
@@ -818,6 +818,10 @@
     <tt>mklib</tt> by the <tt>configure</tt> script and always located in the 
     <dt><a name="LLVMAS"><tt>LLVMAS</tt></a><small>(defaulted)</small></dt>
     <dd>Specifies the path to the <tt>llvm-as</tt> tool.</dd>
+    <dt><a name="LLVMCC"><tt>LLVMCC</tt></a></dt>
+    <dd>Specifies the path to the LLVM capable compiler.</dd>
+    <dt><a name="LLVMCXX"><tt>LLVMCXX</tt></a></dt>
+    <dd>Specifies the path to the LLVM C++ capable compiler.</dd>
     <dt><a name="LLVMGCC"><tt>LLVMGCC</tt></a><small>(defaulted)</small></dt>
     <dd>Specifies the path to the LLVM version of the GCC 'C' Compiler</dd>
     <dt><a name="LLVMGXX"><tt>LLVMGXX</tt></a><small>(defaulted)</small></dt>