In the FreeBSD port of Wine I inherited the following and /usr/include/features.h on my Debian systems states _THREAD_SAFE Same as _REENTRANT, often used by other systems. so I'd like to propose the following. On FreeBSD these two are not exactly synonyms (yet?), and on Linux it doesn't hurt anybody. Gerald ChangeLog: Add _THREAD_SAFE to OPTIONS. --- Make.rules.in.orig Fri Oct 4 06:42:42 2002 +++ Make.rules.in Tue Oct 8 09:46:22 2002 @@ -25,7 +25,7 @@ SHELL = /bin/sh CC = @CC@ CPP = @CPP@ CFLAGS = @CFLAGS@ $(EXTRACFLAGS) -OPTIONS = @OPTIONS@ -D_REENTRANT +OPTIONS = @OPTIONS@ -D_REENTRANT -D_THREAD_SAFE LIBS = @LIBS@ YACC = @YACC@ LEX = @LEX@