Add a new variable, LLVMGCCLIBEXEC to get the libexec directory where the
cc1 and cc1plus executables live.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32738 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.config.in b/Makefile.config.in
index 146fa1d..2216b88 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -182,6 +182,9 @@
 LLVMGCCARCH := @target@/@LLVMGCC_VERSION@
 endif
 
+# Determine the path where the library executables are
+LLVMGCCLIBEXEC := @LLVMGCCLIBEXEC@
+
 # Full pathnames of LLVM C/C++ front-end 'cc1' and 'cc1plus' binaries:
 LLVMGCC  := @LLVMGCC@
 LLVMGXX  := @LLVMGXX@