--- a/configure.in.old
+++ b/configure.in
@@ -61,11 +61,6 @@
 	SOPWITH_SUBDIRS="$SOPWITH_SUBDIRS sdl"
 ],)
 
-PKG_CHECK_MODULES(GTK, glib-2.0 >= 2.0 gtk+-2.0 >= 2.0, [
-	SOPWITH_BINS="$SOPWITH_BINS" # gtksopwith"
-	SOPWITH_SUBDIRS="$SOPWITH_SUBDIRS" # gtk"
-],)
-
 AC_SUBST(SOPWITH_BINS)
 AC_SUBST(SOPWITH_SUBDIRS)
 
@@ -71,7 +71,7 @@
 
 dnl check for TCPIP support
 
-AC_CHECK_HEADER(netinet/ip.h, AC_DEFINE(TCPIP),,)
+AC_CHECK_HEADER(netinet/ip.h, AC_DEFINE([TCPIP], [1], [TCP/IP support]),,)
 
 dnl generate Makefiles
 
--- a/src/Makefile.am.old
+++ b/src/Makefile.am
@@ -6,7 +6,7 @@
 bin_PROGRAMS = @SOPWITH_BINS@
 EXTRA_PROGRAMS = sopwith gtksopwith psopwith
 
-CFLAGS = @CFLAGS@ -I..
+AM_CFLAGS = @SDL_CFLAGS@ -I..
 
 COMMON_SRC =       \
 video.h	    swcollsn.c  swgames.h   swmain.h    swutil.h 	\
--- a/src/sdl/Makefile.am.old
+++ b/src/sdl/Makefile.am
@@ -1,4 +1,4 @@
-CFLAGS=@CFLAGS@ @SDL_CFLAGS@ -I..
+AM_CFLAGS = @SDL_CFLAGS@ -I..
 
 noinst_LIBRARIES = libsdlsopwith.a