Implement extension load-order deps.

1 files changed, 89 insertions, 0 deletions

diff --git a/build/order_by_dep.awk b/build/order_by_dep.awk
new file mode 100644
index 0000000000..38128b2e1b
--- /dev/null
+++ b/build/order_by_dep.awk
@@ -0,0 +1,89 @@
+BEGIN {
+	orig_rs = RS;
+	orig_fs = FS;
+	RS=" ";
+	mod_count = 0;
+	SUBSEP=":";
+}
+
+function get_deps(module_name,       depline, cmd)
+{
+	# this could probably be made *much* better
+	RS=orig_rs;
+	FS="[(,) \t]+"
+	cmd = "grep PHP_ADD_EXTENSION_DEP ext/" module_name "/config*.m4"
+	while (cmd | getline) {
+#		printf("GOT: %s,%s,%s,%s,%s\n", $1, $2, $3, $4, $5);
+		if (!length($5)) {
+			$5 = 0;
+		}
+		mod_deps[module_name, $4] = $5;
+	}
+	close(cmd)
+	RS=" ";
+	FS=orig_fs;
+}
+
+function get_module_index(name,  i)
+{
+	for (i in mods) {
+		if (mods[i] == name) {
+			return i;
+		}
+	}
+	return -1;
+}
+
+function do_deps(mod_idx,        module_name, mod_name_len, dep, ext, val, depidx)
+{
+	module_name = mods[mod_idx];
+	mod_name_len = length(module_name);
+
+	for (ext in mod_deps) {
+		if (substr(ext, 0, mod_name_len+1) != module_name SUBSEP) {
+			continue;
+		}
+		val = mod_deps[ext];
+		ext = substr(ext, mod_name_len+2, length(ext)-mod_name_len);
+
+		depidx = get_module_index(ext);
+		if (depidx >= 0) {
+			do_deps(depidx);
+		}
+	}
+
+	#printf("	phpext_%s_ptr,\n", module_name);
+	printf("	phpext_%s_ptr,@NEWLINE@", module_name);
+	delete mods[mod_idx];
+}
+
+function count(arr,       n, i)
+{
+	n = 0;
+	for (i in arr)
+		n++;
+	return n;
+}
+
+/^[a-zA-Z0-9_-]+/ {
+	# mini hack for pedantic awk
+	gsub("[^a-zA-Z0-9_-]", "", $1)
+	# add each item to array
+	mods[mod_count++] = $1
+
+	# see if it has any module deps
+	get_deps($1);
+}
+END {
+	# order it correctly
+	out_count = 0;
+	
+	while (count(mods)) {
+		# count down, since we need to assemble it in reverse order
+		for (i = mod_count-1; i >= 0; --i) {
+			if (i in mods) {
+				do_deps(i);
+			}
+		}
+	}
+}