--- cf/FreeBSD.cf.orig	Thu Jun  7 16:25:47 2001
+++ cf/FreeBSD.cf	Thu Jun  7 16:28:30 2001
@@ -80,7 +80,6 @@
 /*
  * math.h uses _REENTRANT and stdio.h uses _THREAD_SAFE, so define both.
  */
-# define SystemMTDefines	-D_REENTRANT -D_THREAD_SAFE
 /*
  * FreeBSD has tread-safe api but no getpwnam_r yet.
  */
@@ -91,8 +90,12 @@
 # else
 #  define BuildThreadStubLibrary  YES 
 #  define NeedUIThrStubs          YES 
-#  define ThreadsCompileFlags	-pthread
-#  define ThreadsLibraries 	-pthread
+#  if (OSRelVersion >= 500016)
+#   define ThreadsLibraries 	-lc_r
+#  else
+#   define SystemMTDefines	-D_REENTRANT -D_THREAD_SAFE
+#   define ThreadsLibraries 	-pthread
+#  endif
 #  define SharedX11Reqs		$(LDPRELIB) $(XTHRSTUBLIB)
 #  define SharedXtReqs		$(LDPRELIB) $(XLIBONLY) $(SMLIB) $(ICELIB) $(XTHRSTUBLIB)
 # endif