diff --git a/BasiliskII/src/Unix/acinclude.m4 b/BasiliskII/src/Unix/acinclude.m4
new file mode 100644
index 00000000..9137816d
--- /dev/null
+++ b/BasiliskII/src/Unix/acinclude.m4
@@ -0,0 +1,46 @@
+dnl Additional macros for Basilisk II
+
+
+dnl Check for libgnomeui
+dnl B2_PATH_GNOMEUI([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+dnl Test to see if libgnomeui is installed, and define GNOMEUI_CFLAGS, LIBS
+AC_DEFUN(B2_PATH_GNOMEUI,
+[dnl
+dnl Get the cflags and libraries from the gnome-config script
+dnl
+AC_ARG_WITH(gnome-config,
+[  --with-gnome-config=GNOME_CONFIG  Location of gnome-config],
+GNOME_CONFIG="$withval")
+
+AC_PATH_PROG(GNOME_CONFIG, gnome-config, no)
+AC_MSG_CHECKING(for libgnomeui)
+if test "$GNOME_CONFIG" = "no"; then
+  AC_MSG_RESULT(no)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(yes)
+  GNOMEUI_CFLAGS=`$GNOME_CONFIG --cflags gnomeui`
+  GNOMEUI_LIBS=`$GNOME_CONFIG --libs gnomeui`
+  ifelse([$1], , :, [$1])
+fi  
+AC_SUBST(GNOMEUI_CFLAGS)
+AC_SUBST(GNOMEUI_LIBS)  
+])
+
+
+dnl Check for socklen_t type
+
+AC_DEFUN(TYPE_SOCKLEN_T,
+[AC_REQUIRE([AC_HEADER_STDC])dnl
+AC_MSG_CHECKING(for socklen_t)
+AC_CACHE_VAL(ac_cv_type_socklen_t,
+[AC_EGREP_CPP(dnl
+changequote(<<,>>)dnl
+<<(^|[^a-zA-Z_0-9])socklen_t[^a-zA-Z_0-9]>>dnl
+changequote([,]), [#include <sys/types.h>
+#include <sys/socket.h>], ac_cv_type_socklen_t=yes, ac_cv_type_socklen_t=no)])dnl
+AC_MSG_RESULT($ac_cv_type_socklen_t)
+if test $ac_cv_type_socklen_t = no; then
+  AC_DEFINE(socklen_t, int)
+fi
+])