From 91e8c9ff669f497cbc8ef9964d1d420bb2114b6f Mon Sep 17 00:00:00 2001
From: mindon <mindon@gmail.com>
Date: Fri, 13 Nov 2015 08:25:28 +0800
Subject: [PATCH] Fix make failed with wrong Makefile path of llvm under OS X

issue: https://github.com/rust-lang/rust/issues/24887

make error
make[2]: *** No rule to make target '/home/lab/rust/src/llvm/home/lab/rust/x86_64-apple-darwin/llvm/Makefile', needed by 'Makefile'. Stop.

the **/home/lab/rust/** part repeated issue
---
 Makefile.config.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.config.in b/Makefile.config.in
index a4d641040f33..bad41b535d88 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -56,7 +56,7 @@ ifeq ($(PROJECT_NAME),$(LLVMPackageName))
 LLVM_SRC_ROOT   := $(call realpath, @abs_top_srcdir@)
 LLVM_OBJ_ROOT   := $(call realpath, @abs_top_builddir@)
 PROJ_SRC_ROOT   := $(LLVM_SRC_ROOT)
-PROJ_SRC_DIR    := $(LLVM_SRC_ROOT)$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR))
+PROJ_SRC_DIR    := $(patsubst $(PROJ_OBJ_ROOT)%,$(LLVM_SRC_ROOT)%,$(PROJ_OBJ_DIR))
 
 ifneq ($(CLANG_SRC_ROOT),)
   CLANG_SRC_ROOT:= $(call realpath, $(CLANG_SRC_ROOT))
@@ -83,7 +83,7 @@ endif
 ifndef LLVM_OBJ_ROOT
 $(error Projects must define LLVM_OBJ_ROOT)
 endif
-PROJ_SRC_DIR := $(call realpath, $(PROJ_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)))
+PROJ_SRC_DIR := $(call realpath, $(patsubst $(PROJ_OBJ_ROOT)%,$(PROJ_SRC_ROOT)%,$(PROJ_OBJ_DIR)))
 prefix          := $(PROJ_INSTALL_ROOT)
 PROJ_prefix     := $(prefix)
 ifndef PROJ_VERSION