busybox: add a reworked implementation of menuconfig support, this time with a guard option that keeps all symbols at default values until an extra option is activated

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 39435

1 files changed, 67 insertions, 0 deletions

diff --git a/package/utils/busybox/convert_menuconfig.pl b/package/utils/busybox/convert_menuconfig.pl
new file mode 100755
index 0000000000..cc4802a61c
--- /dev/null
+++ b/package/utils/busybox/convert_menuconfig.pl
@@ -0,0 +1,67 @@
+#!/usr/bin/perl
+# 
+# Copyright (C) 2006 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+use strict;
+my $PATH = $ARGV[0];
+($PATH and -d $PATH) or die 'invalid path';
+
+my %config;
+
+open FIND, "find \"$PATH\" -name Config.in |";
+while (<FIND>) {
+	chomp;
+	my $input = $_;
+	s/^$PATH\///g;
+	s/sysdeps\/linux\///g;
+	my $output = $_;
+	print STDERR "$input => $output\n";
+	$output =~ /^(.+)\/[^\/]+$/ and system("mkdir -p $1");
+
+	open INPUT, $input;
+	open OUTPUT, ">$output";
+	my ($cur, $default_set, $line);
+	while ($line = <INPUT>) {
+		next if $line =~ /^\s*mainmenu/;
+
+		# FIXME: make this dynamic
+		$line =~ s/default FEATURE_BUFFERS_USE_MALLOC/default FEATURE_BUFFERS_GO_ON_STACK/;
+		$line =~ s/default FEATURE_SH_IS_NONE/default FEATURE_SH_IS_ASH/;
+
+		if ($line =~ /^\s*config\s*([\w_]+)/) {
+			$cur = $1;
+			undef $default_set;
+		}
+		if ($line =~ /^\s*(menu|choice|end|source)/) {
+			undef $cur;
+			undef $default_set;
+		}
+		$line =~ s/^(\s*source\s+)/$1package\/utils\/busybox\/config\//;
+
+		$line =~ s/^(\s*(prompt "[^"]+" if|config|depends|depends on|select|default|default \w if)\s+\!?)([A-Z_])/$1BUSYBOX_CONFIG_$3/g;
+		$line =~ s/(( \|\| | \&\& | \( )!?)([A-Z_])/$1BUSYBOX_CONFIG_$3/g;
+		$line =~ s/(\( ?!?)([A-Z_]+ (\|\||&&))/$1BUSYBOX_CONFIG_$2/g;
+
+		if ($cur) {
+			($cur eq 'LFS') and do {
+				$line =~ s/^(\s*(bool|tristate|string))\s*".+"$/$1/;
+			};
+			if ($line =~ /^\s*default/) {
+				my $c;
+				$default_set = 1;
+				$c = "BUSYBOX_DEFAULT_$cur";
+
+				$line =~ s/^(\s*default\s*)(\w+|"[^"]*")(.*)/$1$c$3/;
+			}
+		}
+
+		print OUTPUT $line;
+	}
+	close OUTPUT;
+	close INPUT;
+}
+close FIND;