cygwin patch for boehm-gc/configure.in

[Billinghurst, David (CRTS)]

Rob Collins made some progress with libjava on cygwin, see
http://gcc.gnu.org/ml/java/2001-04/msg00261.html  One problem is that posix
threads on cygwin doesn't/can't link with -lpthreads.  Here is a patch.

2000-04-19  David Billinghurst <David.Billinghurst>

	* configure.in:  POSIX threads on cygwin does not link with
-lpthreads

--- boehm-gc/configure.in.bak	Thu Apr 19 01:15:54 2001
+++ boehm-gc/configure.in	Thu Apr 19 01:25:53 2001
@@ -44,6 +44,9 @@
     *-*-win*)
        THREADS=win32
        ;;
+    *-*-cygwin*)
+       THREADS=posix
+       ;;
     *-*-irix[[1-5]].*)
        # No built-in threads library on IRIX 5.* and older.
        THREADS=none
@@ -73,6 +76,7 @@
     ;;
  posix | pthreads)
     THREADS=posix
+    THREADLIBS=-lpthread
     case "$host" in
      *-*-linux*)
 	AC_DEFINE(LINUX_THREADS)
@@ -85,8 +89,10 @@
      *-*-irix*)
 	AC_DEFINE(IRIX_THREADS)
 	;;
+     *-*-cygwin*)
+        THREADLIBS=
+        ;;
     esac
-    THREADLIBS=-lpthread
     ;;
  decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
     AC_MSG_ERROR(thread package $THREADS not yet supported)