Support correct build:
1. Capture the ENABLE_THREADS configure variable in Makefile.config
2. Use ENABLE_THREADS to avoid building ParallelJIT if threads are not
   present.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28609 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.config.in b/Makefile.config.in
index 47d0d81..03d6290 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -201,6 +201,9 @@
 # When ENABLE_DOXYGEN is enabled, the doxygen documentation will be built
 ENABLE_DOXYGEN = @ENABLE_DOXYGEN@
 
+# Do we want to enable threads?
+ENABLE_THREADS := @ENABLE_THREADS@
+
 # This option tells the Makefiles to produce verbose output.
 # It essentially prints the commands that make is executing
 #VERBOSE = 1