xlat: extend syntax

* xlat/gen.sh: Implement #conditional directive that turns on
preprocessor checks turned off earlier by #unconditional directive.

diff --git a/xlat/gen.sh b/xlat/gen.sh
index bc6982e03559fbc4da27203331ad91f7bec2c449..cf78c47fcce61d2a9aacc7f4873b2804545ccee0 100755 (executable)
--- a/xlat/gen.sh
+++ b/xlat/gen.sh
@@ -135,6 +135,9 @@ gen_header()
        while read line; do
                LC_COLLATE=C
                case $line in
+               '#conditional')
+                       unconditional=
+                       ;;
                '#unconditional')
                        unconditional=1
                        ;;
@@ -190,6 +193,9 @@ gen_header()
        while read line; do
                LC_COLLATE=C
                case ${line} in
+               '#conditional')
+                       unconditional=
+                       ;;
                '#unconditional')
                        unconditional=1
                        ;;