1 files changed, 75 insertions, 0 deletions
diff --git a/build/make_var_export.awk b/build/make_var_export.awk
new file mode 100644
index 0000000..b28e20e
--- /dev/null
+++ b/build/make_var_export.awk
@@ -0,0 +1,75 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#
+# Based on apr's make_export.awk, which is
+# based on Ryan Bloom's make_export.pl
+
+/^#[ \t]*if(def)? (AP[RU]?_|!?defined).*/ {
+	if (old_filename != FILENAME) {
+		if (old_filename != "") printf("%s", line)
+		macro_no = 0
+		found = 0
+		count = 0
+		old_filename = FILENAME
+		line = ""
+	}
+	macro_stack[macro_no++] = macro
+	macro = substr($0, length($1)+2)
+	count++
+	line = line "#ifdef " macro "\n"
+	next
+}
+
+/^#[ \t]*endif/ {
+	if (count > 0) {
+		count--
+		line = line "#endif /* " macro " */\n"
+		macro = macro_stack[--macro_no]
+	}
+	if (count == 0) {
+		if (found != 0) {
+			printf("%s", line)
+		}
+		line = ""
+	}
+	next
+}
+
+function add_symbol (sym_name) {
+	if (count) {
+		found++
+	}
+	for (i = 0; i < count; i++) {
+		line = line "\t"
+	}
+	line = line sym_name "\n"
+
+	if (count == 0) {
+		printf("%s", line)
+		line = ""
+	}
+}
+
+/^[ \t]*(extern[ \t]+)?AP[RU]?_DECLARE_DATA .*;$/ {
+       varname = $NF;
+       gsub( /[*;]/, "", varname);
+       gsub( /\[.*\]/, "", varname);
+       add_symbol(varname);
+}
+
+END {
+	printf("%s", line)
+}