make sure USE_THREADS is defined so external apps work

p4raw-id: //depot/perl@11785

diff --git a/config_h.SH b/config_h.SH
index 7c1eed1..1668589 100644 (file)
--- a/config_h.SH
+++ b/config_h.SH
@@ -3369,6 +3369,7 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$useithreads  USE_ITHREADS            /**/
 #if defined(USE_5005THREADS) && !defined(USE_ITHREADS)
 #define                USE_5005THREADS         /* until src is revised*/
+#define                USE_THREADS             /* backward compatability */
 #endif
 #$d_oldpthreads        OLD_PTHREADS_API                /**/
 #$usereentrant USE_REENTRANT_API       /**/