From daf5881128144b36a01ce501d7aef3de688e343f Mon Sep 17 00:00:00 2001
From: Oscar Fuentes <ofv@wanadoo.es>
Date: Tue, 10 Aug 2010 23:48:22 +0000
Subject: [PATCH] Avoid multiple definition warnings when both config.h and
 llvm-config.h are included.

This is the cmake counterpart of r110547. See bug #7809.

llvm-svn: 110753
---
 llvm/include/llvm/Config/config.h.cmake      | 5 +++++
 llvm/include/llvm/Config/llvm-config.h.cmake | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/llvm/include/llvm/Config/config.h.cmake b/llvm/include/llvm/Config/config.h.cmake
index d9f95a6bfaa7..81e6ab574863 100644
--- a/llvm/include/llvm/Config/config.h.cmake
+++ b/llvm/include/llvm/Config/config.h.cmake
@@ -3,6 +3,9 @@
 ** Created by Kevin from config.h.in **
 ***************************************/
 
+#ifndef CONFIG_H
+#define CONFIG_H
+
 /* Define if dlopen(0) will open the symbols of the program */
 #undef CAN_DLOPEN_SELF
 
@@ -628,3 +631,5 @@
 
 /* Native LLVM architecture, short name */
 #cmakedefine LLVM_NATIVE_ARCHNAME ${LLVM_NATIVE_ARCH}
+
+#endif
diff --git a/llvm/include/llvm/Config/llvm-config.h.cmake b/llvm/include/llvm/Config/llvm-config.h.cmake
index c277ef2b2077..b68592a64a0a 100644
--- a/llvm/include/llvm/Config/llvm-config.h.cmake
+++ b/llvm/include/llvm/Config/llvm-config.h.cmake
@@ -11,6 +11,11 @@
    they can be in exported headers and won't override package specific
    directives.  This is a C file so we can include it in the llvm-c headers.  */
 
+/* To avoid multiple inclusions of these variables when we include the exported
+   headers and config.h, conditionally include these.  */
+/* TODO: This is a bit of a hack.  */
+#ifndef CONFIG_H
+
 /* Installation directory for binary executables */
 #cmakedefine LLVM_BINDIR "${LLVM_BINDIR}"
 
@@ -82,3 +87,5 @@
 
 /* Installation prefix directory */
 #cmakedefine LLVM_PREFIX "${LLVM_PREFIX}"
+
+#endif