+AC_ARG_ENABLE(ds390-port,[ --disable-ds390-port Excludes the DS390 port])
+echo ds390 >>ports.all
+if test "$enable_ds390_port" = "no"; then
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_DS390, 1)
+else
+ echo ds390 >>ports.build
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_DS390, 0)
+fi
+
+AC_ARG_ENABLE(pic-port,[ --disable-pic-port Excludes the PIC port])
+echo pic >>ports.all
+if test "$enable_pic_port" = "no"; then
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_PIC, 1)
+else
+ echo pic >>ports.build
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_PIC, 0)
+fi
+
+AC_ARG_ENABLE(i186-port,[ --disable-i186-port Excludes the I186 port])
+echo izt >>ports.all
+if test "$enable_i186_port" = "no"; then
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_I186, 1)
+else
+ echo izt >>ports.build
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_I186, 0)
+fi
+
+AC_ARG_ENABLE(tlcs900h-port,[ --disable-tlcs900h-port Excludes the TLCS900H port])
+echo izt >>ports.all
+if test "$enable_tlcs900h_port" = "no"; then
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_TLCS900H, 1)
+else
+ echo izt >>ports.build
+ AC_DEFINE_UNQUOTED(OPT_DISABLE_TLCS900H, 0)
+fi
+
+#remove duplicates
+cat ports.all | uniq >ports
+mv ports ports.all
+cat ports.build | uniq >ports
+mv ports ports.build
+