sdk: expose part of advanced configuration options

These option can be useful in developement/packagig applications for
OpenWrt. Instead of searching them by hand in Config-build.in lets
expose them for easier access.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>

target/sdk/files/Config.in

@@ -18,6 +18,63 @@ menu "Global build settings"
 
 endmenu
 
+menu "Advanced configuration options (for developers)"
+
+	config BROKEN
+		bool "Show broken packages"
+		default n
+
+	config DOWNLOAD_FOLDER
+		string "Download folder"
+		default ""
+		help
+		  Store downloaded source bundles in this directory.
+		  If not set then defaults to './dl', which is removed by operations such as
+		  'git clean -xdf' or 'make distclean'.
+		  This option is useful if you have a low bandwidth Internet connection, and by
+		  setting a path outside the OpenWrt tree downloads will be saved.
+
+	config LOCALMIRROR
+		string "Local mirror for source packages"
+		default ""
+
+	config AUTOREBUILD
+		bool "Automatic rebuild of packages"
+		default y
+		help
+		  Automatically rebuild packages when their files change.
+
+	config AUTOREMOVE
+		bool "Automatic removal of build directories"
+		default y
+		help
+		  Automatically delete build directories after make target completed.
+		  This allows you to symlink build_dir into a scratch location, e.g. a ramdisk,
+		  which does not have enough space to keep a complete build_dir.
+
+	config CCACHE
+		bool "Use ccache"
+		default n
+		help
+		  Compiler cache; see https://ccache.samba.org/
+
+	config BUILD_LOG
+		bool "Enable log files during build process"
+		default n
+		help
+		  If enabled, log files will be written to the ./log directory.
+
+	config SRC_TREE_OVERRIDE
+		bool "Enable package source tree override"
+		default n
+		help
+		  If enabled, you can force a package to use a git tree as source
+		  code instead of the normal tarball. Create a symlink 'git-src'
+		  in the package directory, pointing to the .git tree that you want
+		  to pull the source code from.
+
+endmenu
+
 config IN_SDK
 	default y
 	bool