diff --git a/autoconf/m4/config_project.m4 b/autoconf/m4/config_project.m4
index d369e4a08c9..eea7faf165c 100644
--- a/autoconf/m4/config_project.m4
+++ b/autoconf/m4/config_project.m4
@@ -4,11 +4,11 @@
 AC_DEFUN([LLVM_CONFIG_PROJECT],
   [AC_ARG_WITH([llvmsrc],
     AS_HELP_STRING([--with-llvmsrc],[Location of LLVM Source Code]),
-    [llvm_src="$withval"],[llvm_src=`cd ${srcdir}/../..; pwd`])
+    [llvm_src="$withval"],[llvm_src="]$1["])
   AC_SUBST(LLVM_SRC,$llvm_src)
   AC_ARG_WITH([llvmobj],
     AS_HELP_STRING([--with-llvmobj],[Location of LLVM Object Code]),
-    [llvm_obj="$withval"],[llvm_obj=`cd ../..; pwd`])
+    [llvm_obj="$withval"],[llvm_obj="]$2["])
   AC_SUBST(LLVM_OBJ,$llvm_obj)
   AC_CONFIG_COMMANDS([setup],,[llvm_src="${LLVM_SRC}"])
 ])