zlib now linked in. I'll test tonight at home

acconfig.h

@@ -79,6 +79,9 @@
 /* Define if you have the dlopen function.  */
 #undef HAVE_DLOPEN
 
+/* Define if you have zlib */
+#undef HAS_ZLIB
+
 /* If your version of OpenGL uses APIENTRY, define GLAPIENTRY to be APIENTRY */
 #undef GLAPIENTRY
 

configure.in

@@ -185,6 +185,22 @@ fi
 dnl Checks for working -lm
 AC_CHECK_LIB(m, pow,, AC_MSG_ERROR([math library (-lm) appears broken]))
 
+if test "x$enable_zlib" != "xno"; then
+  dnl Check for working -lz
+  dnl Note - must have gztell *and* gzgets in -lz *and* zlib.h
+  AC_CHECK_LIB(z, gztell, HAS_ZLIB=yes, HAS_ZLIB=no, [$LIBS])
+  if test "x$HAS_ZLIB" = "xyes"; then
+     AC_CHECK_LIB(z, gzgets, HAS_ZLIB=yes, HAS_ZLIB=no, [$LIBS])
+     if test "x$HAS_ZLIB" = "xyes"; then
+        AC_CHECK_HEADER(zlib.h, HAS_ZLIB=yes, HAS_ZLIB=no)
+        if test "x$HAS_ZLIB" = "xyes"; then
+           LIBS="-lz $LIBS"
+           AC_DEFINE(HAS_ZLIB)
+        fi
+     fi
+  fi
+fi
+
 dnl Checks for MGL support
 AC_ARG_WITH(mgl,
 [  --with-mgl[=DIR]        use MGL found in DIR],
@@ -555,7 +571,11 @@ AC_CHECK_LIB(mme,waveOutOpen,HAVE_LIBMME=yes)
 
 AC_ARG_ENABLE(alsa,
 [  --disable-alsa          disable alsa support],
-)      
+)
+
+AC_ARG_ENABLE(zlib,
+[  --disable-zlib          disable zlib support],
+)
 
 SNDTYPE=""
 SOUND_LIBS=""

include/config.h.in

@@ -142,6 +142,9 @@
 /* Define if you have the dlopen function.  */
 #undef HAVE_DLOPEN
 
+/* Define if you have zlib */
+#undef HAS_ZLIB
+
 /* Define this to something sane if you don't have stricmp */
 #undef stricmp
 

source/net_udp.c

@@ -54,7 +54,7 @@
 #include "sys.h"
 #include "console.h"
 
-extern int gethostname (char *, int);
+//extern int gethostname (char *, int);
 extern int close (int);
 
 static int net_acceptsocket = -1;		// socket for fielding new connections