diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 376068fba..6396aad46 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,6 @@
 Changes towards version 0.4:
+- Restructuring of the unix build scripts.
+  Also, interrupted dependency builds are now detected. - SvdB
 - Unix build: Make it possible to use another directory than the current
   one for putting the build data in (such as build.vars, config.state,
   the obj/ dir, and the final binary). - SvdB
diff --git a/sc2/build/unix/README.packages b/sc2/build/unix/README.packages
new file mode 100644
index 000000000..68acfafc2
--- /dev/null
+++ b/sc2/build/unix/README.packages
@@ -0,0 +1,31 @@
+This file describes the easiest way to use this build system from
+a packaging system such as rpm.
+
+If you want an interactive configuration, you can start the build process
+like you would do manually:
+	./build.sh uqm
+to build the game, and
+	./build.sh uqm install
+to install it.
+			
+
+If you want the configuration to be non-interactive, you'll want to do
+the following: execute
+	./build.sh uqm config
+once. This will generate a 'config.vars' file, which you can then
+include in your package. Then when you want to build the game, put this
+file the directory pointed to by $BUILD_WORK (default is the current
+directory), and do
+	./build.sh uqm reprocess_config
+to generate all the configuration information for the build, and then
+	./build.sh uqm
+to build the game, and
+	./build.sh uqm install
+to install it.
+
+You may wish to set the environment variable BUILD_WORK to a directory
+where the files created in the configuration and build process should be
+stored. That way, the source tree will remain clean and no write access
+to it is required.
+
+
diff --git a/sc2/build/unix/build.config b/sc2/build/unix/build.config
index f4bf8f7df..159feb7b8 100644
--- a/sc2/build/unix/build.config
+++ b/sc2/build/unix/build.config
@@ -1,223 +1,257 @@
 #!/bin/sh
 
-if [ -z "$BUILD_WORK" ]; then
-	BUILD_WORK=.
-fi
-
 # Include build functions used here
 . build/unix/config_functions
 . build/unix/menu_functions
 . build/unix/ansi
 
 
-# Some requirements:
-have_program gcc || exit 1
-COMPILE="$PROG_gcc_FILE"
+uqm_requirements()
+{
+	# Some requirements:
+	have_program gcc || exit 1
+	COMPILE="$PROG_gcc_FILE"
 
-case "$OSNAME" in
-	MINGW32*)
-		have_program windres
-		WINDRES="$PROG_windres_FILE"
-		;;
-esac
+	case "$OSNAME" in
+		MINGW32*)
+			have_program windres
+			WINDRES="$PROG_windres_FILE"
+			;;
+	esac
 
 
-# Define WORDS_BIGENDIAN on bigendian machines
-check_endianness
+	# Define WORDS_BIGENDIAN on bigendian machines
+	check_endianness
 
 
-# Libraries used
-use_library SDL 1.2.3 || exit 1
-use_library SDL_image || exit 1
-#have_library vorbis || exit 1
-have_library vorbisfile || exit 1
+	# Libraries used
+	use_library SDL 1.2.3 || exit 1
+	use_library SDL_image || exit 1
+	#have_library vorbis || exit 1
+	have_library vorbisfile || exit 1
 
 
-# Add defines for HAVE_STRUPR and STRICMP
-define_have_symbol strupr
-define_have_symbol stricmp
+	# Add defines for HAVE_STRUPR and STRICMP
+	define_have_symbol strupr
+	define_have_symbol stricmp
 
-# Check for getopt.h
-define_have_header getopt.h
-
-
-# Describe the menu:
-MENU_main_ITEMS="debug graphics sound ioformat install_path"
-MENU_main_TITLE="Main menu"
-MENU_main_ITEM_debug_TYPE=CHOICE
-MENU_main_ITEM_graphics_TYPE=CHOICE
-MENU_main_ITEM_sound_TYPE=CHOICE
-MENU_main_ITEM_ioformat_TYPE=CHOICE
-MENU_main_ITEM_link_TYPE=CHOICE
-MENU_main_ITEM_install_path_TYPE=MENU
-
-CHOICE_debug_OPTIONS="nodebug debug strictdebug"
-CHOICE_debug_TITLE="Include debugging information"
-CHOICE_debug_OPTION_nodebug_TITLE="No debugging information"
-CHOICE_debug_OPTION_nodebug_ACTION='nodebug_action'
-nodebug_action() {
-	CFLAGS="$CFLAGS -O3"
-	DEBUG=0
+	# Check for getopt.h
+	define_have_header getopt.h
 }
-CHOICE_debug_OPTION_debug_TITLE="Debugging information"
-CHOICE_debug_OPTION_debug_ACTION='debug_action'
-debug_action() {
-	CFLAGS="$CFLAGS -g -O0 -W -Wall"
-	LDFLAGS="$LDFLAGS -O0"
-	DEBUG=1
+
+uqm_prepare_config()
+{
+	# Describe the menu:
+	MENU_main_ITEMS="debug graphics sound ioformat install_path"
+	MENU_main_TITLE="Main menu"
+	MENU_main_ITEM_debug_TYPE=CHOICE
+	MENU_main_ITEM_graphics_TYPE=CHOICE
+	MENU_main_ITEM_sound_TYPE=CHOICE
+	MENU_main_ITEM_ioformat_TYPE=CHOICE
+	MENU_main_ITEM_link_TYPE=CHOICE
+	MENU_main_ITEM_install_path_TYPE=MENU
+
+	CHOICE_debug_OPTIONS="nodebug debug strictdebug"
+	CHOICE_debug_TITLE="Include debugging information"
+	CHOICE_debug_OPTION_nodebug_TITLE="No debugging information"
+	CHOICE_debug_OPTION_nodebug_ACTION='nodebug_action'
+	nodebug_action() {
+		CFLAGS="$CFLAGS -O3"
+		DEBUG=0
+	}
+	CHOICE_debug_OPTION_debug_TITLE="Debugging information"
+	CHOICE_debug_OPTION_debug_ACTION='debug_action'
+	debug_action() {
+		CFLAGS="$CFLAGS -g -O0 -W -Wall"
+		LDFLAGS="$LDFLAGS -O0"
+		DEBUG=1
+	}
+	CHOICE_debug_OPTION_strictdebug_TITLE="Debug info + strict compile checks"
+	CHOICE_debug_OPTION_strictdebug_ACTION='strictdebug_action'
+	strictdebug_action() {
+		CFLAGS="$CFLAGS -O1"  # This is needed for -Wunitialized
+		CFLAGS="$CFLAGS -W -Wall \
+				-Wbad-function-cast -Wcast-qual -Wmissing-prototypes \
+				-Wstrict-prototypes -Wmissing-declarations \
+				-Wwrite-strings -Wimplicit -Wreturn-type -Wformat \
+				-Wswitch -Wcomment -Wchar-subscripts \
+				-Wparentheses -Wcast-align -Waggregate-return \
+				-Winline -Wuninitialized"
+#		CFLAGS="$CFLAGS "-Wpointer-arith"
+				# Some standard header won't even compile with this on
+#		CFLAGS="$CFLAGS -Wshadow"
+				# This gives absurd conflicts with standard files,
+				# like from 'y2'
+#		CFLAGS="$CFLAGS -Werror"
+				# We shouldn't do this until we actually nail them
+				# all in the original code.  Then we can enforce them
+				# on ourselves.
+#		CFLAGS="$CFLAGS -pedantic-errors -ansi -trigraphs"  # ANSI
+#		CFLAGS="$CFLAGS -Wnested-externs"
+				# We know they're in the code, and though we'd like to get
+				# rid of them, they're not bugs.
+		CFLAGS=`echo $CFLAGS`
+				# Remove all the unnecessary spaces from $CFLAGS,
+				# for more readable messages.
+		DEBUG=0
+	}
+	CHOICE_debug_DEFAULT=debug
+
+	CHOICE_graphics_OPTIONS="pure opengl"
+	CHOICE_graphics_TITLE="OpenGL graphics support"
+	CHOICE_graphics_OPTION_pure_TITLE="Don't include OpenGL graphics support"
+	CHOICE_graphics_OPTION_pure_ACTION='graphics_pure_action'
+	graphics_pure_action() {
+		CFLAGS="$CFLAGS -DGFXMODULE_SDL"
+		HAVE_OPENGL=0
+	}
+	CHOICE_graphics_OPTION_opengl_TITLE="Include OpenGL graphics support"
+	CHOICE_graphics_OPTION_opengl_ACTION='graphics_opengl_action'
+	CHOICE_graphics_OPTION_opengl_PRECOND="have_library opengl"
+	graphics_opengl_action() {
+		CFLAGS="$CFLAGS -DGFXMODULE_SDL -DHAVE_OPENGL"
+		HAVE_OPENGL=1
+		use_library opengl
+	}
+	CHOICE_graphics_DEFAULT=opengl
+
+	CHOICE_sound_OPTIONS="mixsdl openal"
+	CHOICE_sound_TITLE="Sound backend"
+	CHOICE_sound_OPTION_mixsdl_TITLE="Use MixSDL for sound (internal)"
+	CHOICE_sound_OPTION_mixsdl_ACTION=sound_mixsdl_action
+	sound_mixsdl_action() {
+		CFLAGS="$CFLAGS -DSOUNDMODULE_SDL"
+		SOUNDMODULE=mixsdl
+		use_library vorbisfile
+#		use_library vorbis
+	}
+	CHOICE_sound_OPTION_openal_TITLE="Include OpenAL support (experimental)"
+	CHOICE_sound_OPTION_openal_PRECOND="have_library openal"
+	CHOICE_sound_OPTION_openal_ACTION=sound_openal_action
+	sound_openal_action() {
+		CFLAGS="$CFLAGS -DHAVE_OPENAL -DSOUNDMODULE_SDL"
+		SOUNDMODULE=openal
+		use_library openal
+		use_library vorbisfile
+#		use_library vorbis
+	}
+	CHOICE_sound_DEFAULT=mixsdl
+
+	CHOICE_ioformat_OPTIONS="stdio stdio_zip"
+	CHOICE_ioformat_TITLE="Supported file i/o methods"
+	CHOICE_ioformat_OPTION_stdio_TITLE="Only direct file i/o"
+	CHOICE_ioformat_OPTION_stdio_zip_TITLE="Direct & .zip file i/o"
+	CHOICE_ioformat_OPTION_stdio_zip_PRECOND="have_library zlib"
+	CHOICE_ioformat_OPTION_stdio_zip_ACTION="ioformat_stdio_zip_action"
+	ioformat_stdio_zip_action() {
+		CFLAGS="$CFLAGS -DHAVE_ZIP=1"
+		USE_ZIP_IO=1
+		use_library zlib
+	}
+	CHOICE_ioformat_DEFAULT=stdio_zip
+
+	# Making static binaries is more complicated than this.
+	# For now, it will have to be done by hand.
+	#CHOICE_link_OPTIONS="static dynamic"
+	#CHOICE_link_TITLE="Linking"
+	#CHOICE_link_OPTION_static_TITLE="Statically linked libraries"
+	#CHOICE_link_OPTION_static_ACTION='eval LDFLAGS="$LDFLAGS -static"'
+	#CHOICE_link_OPTION_dynamic_TITLE="Dynamically linked libraries"
+	#CHOICE_link_DEFAULT=dynamic
+
+	MENU_install_path_ITEMS="install_prefix install_bindir install_libdir \
+			install_sharedir"
+	MENU_install_path_TITLE="Installation paths"
+	MENU_install_path_ITEM_install_prefix_TYPE=INPUT
+	MENU_install_path_ITEM_install_bindir_TYPE=INPUT
+	MENU_install_path_ITEM_install_libdir_TYPE=INPUT
+	MENU_install_path_ITEM_install_sharedir_TYPE=INPUT
+
+	INPUT_install_prefix_DEFAULT="/usr/local/games"
+	INPUT_install_prefix_TITLE="Installation prefix"
+	INPUT_install_prefix_VALIDATOR=validate_path
+	INPUT_install_prefix_ACTION='eval INSTALL_PREFIX=$MENU_install_prefix_VALUE'
+
+	INPUT_install_bindir_DEFAULT='$prefix/bin'
+	INPUT_install_bindir_TITLE="Location for binaries"
+	INPUT_install_bindir_VALIDATOR=validate_path
+
+	INPUT_install_libdir_DEFAULT='$prefix/lib'
+	INPUT_install_libdir_TITLE="Location for non-sharable data"
+	INPUT_install_libdir_VALIDATOR=validate_path
+
+	INPUT_install_sharedir_DEFAULT='$prefix/share'
+	INPUT_install_sharedir_TITLE="Location for sharable data"
+	INPUT_install_sharedir_VALIDATOR=validate_path
 }
-CHOICE_debug_OPTION_strictdebug_TITLE="Debug info + strict compile checks"
-CHOICE_debug_OPTION_strictdebug_ACTION='strictdebug_action'
-strictdebug_action() {
-	CFLAGS="$CFLAGS -O1"  # This is needed for -Wunitialized
-	CFLAGS="$CFLAGS -W -Wall \
-			-Wbad-function-cast -Wcast-qual -Wmissing-prototypes \
-			-Wstrict-prototypes -Wmissing-declarations \
-			-Wwrite-strings -Wimplicit -Wreturn-type -Wformat \
-			-Wswitch -Wcomment -Wchar-subscripts \
-			-Wparentheses -Wcast-align -Waggregate-return \
-			-Winline -Wuninitialized"
-#	CFLAGS="$CFLAGS "-Wpointer-arith"
-			# Some standard header won't even compile with this on
-#	CFLAGS="$CFLAGS -Wshadow"
-			# This gives absurd conflicts with standard files,
-			# like from 'y2'
-#	CFLAGS="$CFLAGS -Werror"
-			# We shouldn't do this until we actually nail them
-			# all in the original code.  Then we can enforce them
-			# on ourselves.
-#	CFLAGS="$CFLAGS -pedantic-errors -ansi -trigraphs"  # ANSI
-#	CFLAGS="$CFLAGS -Wnested-externs"
-			# We know they're in the code, and though we'd like to get
-			# rid of them, they're not bugs.
-	CFLAGS=`echo $CFLAGS`
-			# Remove all the unnecessary spaces from $CFLAGS,
-			# for more readable messages.
-	DEBUG=0
+
+uqm_do_config()
+{
+	# Show the menu and let people set things
+	do_menu MENU main "$BUILD_WORK/config.state"
+	echo "Configuration complete."
 }
-CHOICE_debug_DEFAULT=debug
 
-CHOICE_graphics_OPTIONS="pure opengl"
-CHOICE_graphics_TITLE="OpenGL graphics support"
-CHOICE_graphics_OPTION_pure_TITLE="Don't include OpenGL graphics support"
-CHOICE_graphics_OPTION_pure_ACTION='graphics_pure_action'
-graphics_pure_action() {
-	CFLAGS="$CFLAGS -DGFXMODULE_SDL"
-	HAVE_OPENGL=0
+uqm_process_config() {
+	menu_process MENU main
+
+	# Set INSTALL_LIBDIR, INSTALL_BINDIR, and INSTALL_SHAREDIR to the specified
+	# values, replacing '$prefix' to the prefix set.
+	prefix="$INPUT_install_prefix_VALUE" \
+			eval INSTALL_BINDIR="${INPUT_install_bindir_VALUE%/}/"
+	prefix="$INPUT_install_prefix_VALUE" \
+			eval INSTALL_LIBDIR="${INPUT_install_libdir_VALUE%/}/"
+	prefix="$INPUT_install_prefix_VALUE" \
+			eval INSTALL_SHAREDIR="${INPUT_install_sharedir_VALUE%/}/"
+
+	# Set the content dir
+	CONTENTDIR="${INSTALL_SHAREDIR}uqm/content"
+
+	CFLAGS="$CFLAGS -I \"$BUILD_WORK\""
+
+	# Export the HAVE_ symbols to config_unix.h, using config_unix.h.ini
+	# as template.
+	SUBSTITUTE_VARS="$HAVE_SYMBOLS CONTENTDIR"
+	SUBSTITUTE_FILES="config_unix.h"
+	substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES src "$BUILD_WORK"
+
+	# Make build.vars from build.vars.in, substituting variables.
+	SUBSTITUTE_VARS="CFLAGS LDFLAGS MAKE DEBUG SOUNDMODULE HAVE_OPENGL \
+			USE_ZIP_IO \
+			INSTALL_LIBDIR INSTALL_BINDIR INSTALL_SHAREDIR WINDRES"
+	SUBSTITUTE_FILES="build.vars"
+	substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES . "$BUILD_WORK"
+
+	# Make 'uqm' shell script from build.vars.in, substituting variables.
+	SUBSTITUTE_VARS="INSTALL_LIBDIR INSTALL_BINDIR INSTALL_SHAREDIR uqm_NAME"
+	SUBSTITUTE_FILES="uqm-wrapper"
+	substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES build/unix "$BUILD_WORK"
 }
-CHOICE_graphics_OPTION_opengl_TITLE="Include OpenGL graphics support"
-CHOICE_graphics_OPTION_opengl_ACTION='graphics_opengl_action'
-CHOICE_graphics_OPTION_opengl_PRECOND="have_library opengl"
-graphics_opengl_action() {
-	CFLAGS="$CFLAGS -DGFXMODULE_SDL -DHAVE_OPENGL"
-	HAVE_OPENGL=1
-	use_library opengl
+
+uqm_load_config()
+{
+	menu_load MENU main "$BUILD_WORK/config.state"
 }
-CHOICE_graphics_DEFAULT=opengl
 
-CHOICE_sound_OPTIONS="mixsdl openal"
-CHOICE_sound_TITLE="Sound backend"
-CHOICE_sound_OPTION_mixsdl_TITLE="Use MixSDL for sound (internal)"
-CHOICE_sound_OPTION_mixsdl_ACTION=sound_mixsdl_action
-sound_mixsdl_action() {
-	CFLAGS="$CFLAGS -DSOUNDMODULE_SDL"
-	SOUNDMODULE=mixsdl
-	use_library vorbisfile
-#	use_library vorbis
+uqm_save_config()
+{
+	menu_save MENU main "$BUILD_WORK/config.state"
 }
-CHOICE_sound_OPTION_openal_TITLE="Include OpenAL support (experimental)"
-CHOICE_sound_OPTION_openal_PRECOND="have_library openal"
-CHOICE_sound_OPTION_openal_ACTION=sound_openal_action
-sound_openal_action() {
-	CFLAGS="$CFLAGS -DHAVE_OPENAL -DSOUNDMODULE_SDL"
-	SOUNDMODULE=openal
-	use_library openal
-	use_library vorbisfile
-#	use_library vorbis
+
+uqm_pre_build() {
+	:  # Nothing to do
 }
-CHOICE_sound_DEFAULT=mixsdl
 
-CHOICE_ioformat_OPTIONS="stdio stdio_zip"
-CHOICE_ioformat_TITLE="Supported file i/o methods"
-CHOICE_ioformat_OPTION_stdio_TITLE="Only direct file i/o"
-CHOICE_ioformat_OPTION_stdio_zip_TITLE="Direct & .zip file i/o"
-CHOICE_ioformat_OPTION_stdio_zip_PRECOND="have_library zlib"
-CHOICE_ioformat_OPTION_stdio_zip_ACTION="ioformat_stdio_zip_action"
-ioformat_stdio_zip_action() {
-	CFLAGS="$CFLAGS -DHAVE_ZIP=1"
-	USE_ZIP_IO=1
-	use_library zlib
+uqm_post_build() {
+ 	:  # Nothing to do
 }
-CHOICE_ioformat_DEFAULT=stdio_zip
 
-# Making static binaries is more complicated than this.
-# For now, it will have to be done by hand.
-#CHOICE_link_OPTIONS="static dynamic"
-#CHOICE_link_TITLE="Linking"
-#CHOICE_link_OPTION_static_TITLE="Statically linked libraries"
-#CHOICE_link_OPTION_static_ACTION='eval LDFLAGS="$LDFLAGS -static"'
-#CHOICE_link_OPTION_dynamic_TITLE="Dynamically linked libraries"
-#CHOICE_link_DEFAULT=dynamic
+uqm_pre_install() {
+	:  # Nothing to do
+}
 
-MENU_install_path_ITEMS="install_prefix install_bindir install_libdir \
-		install_sharedir"
-MENU_install_path_TITLE="Installation paths"
-MENU_install_path_ITEM_install_prefix_TYPE=INPUT
-MENU_install_path_ITEM_install_bindir_TYPE=INPUT
-MENU_install_path_ITEM_install_libdir_TYPE=INPUT
-MENU_install_path_ITEM_install_sharedir_TYPE=INPUT
-
-INPUT_install_prefix_DEFAULT="/usr/local/games"
-INPUT_install_prefix_TITLE="Installation prefix"
-INPUT_install_prefix_VALIDATOR=validate_path
-INPUT_install_prefix_ACTION='eval INSTALL_PREFIX=$MENU_install_prefix_VALUE'
-
-INPUT_install_bindir_DEFAULT='$prefix/bin'
-INPUT_install_bindir_TITLE="Location for binaries"
-INPUT_install_bindir_VALIDATOR=validate_path
-
-INPUT_install_libdir_DEFAULT='$prefix/lib'
-INPUT_install_libdir_TITLE="Location for non-sharable data"
-INPUT_install_libdir_VALIDATOR=validate_path
-
-INPUT_install_sharedir_DEFAULT='$prefix/share'
-INPUT_install_sharedir_TITLE="Location for sharable data"
-INPUT_install_sharedir_VALIDATOR=validate_path
-
-
-# Show the menu and let people set things
-do_menu MENU main "$BUILD_WORK/config.state"
-echo "Configuration complete."
-
-# Set INSTALL_LIBDIR, INSTALL_BINDIR, and INSTALL_SHAREDIR to the specified
-# values, replacing '$prefix' to the prefix set.
-prefix="$INPUT_install_prefix_VALUE" \
-		eval INSTALL_BINDIR="${INPUT_install_bindir_VALUE%/}/"
-prefix="$INPUT_install_prefix_VALUE" \
-		eval INSTALL_LIBDIR="${INPUT_install_libdir_VALUE%/}/"
-prefix="$INPUT_install_prefix_VALUE" \
-		eval INSTALL_SHAREDIR="${INPUT_install_sharedir_VALUE%/}/"
-
-# Set the content dir
-CONTENTDIR="${INSTALL_SHAREDIR}uqm/content"
-
-CFLAGS="$CFLAGS -I \"$BUILD_WORK\""
-
-# Export the HAVE_ symbols to config_unix.h, using config_unix.h.in as template
-SUBSTITUTE_VARS="$HAVE_SYMBOLS CONTENTDIR"
-SUBSTITUTE_FILES="config_unix.h"
-substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES src "$BUILD_WORK"
-
-# Make build.vars from build.vars.in, substituting variables.
-SUBSTITUTE_VARS="CFLAGS LDFLAGS MAKE DEBUG SOUNDMODULE HAVE_OPENGL \
-		USE_ZIP_IO \
-		INSTALL_LIBDIR INSTALL_BINDIR INSTALL_SHAREDIR WINDRES"
-SUBSTITUTE_FILES="build.vars"
-substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES . "$BUILD_WORK"
-
-# Make 'uqm' shell script from build.vars.in, substituting variables.
-SUBSTITUTE_VARS="INSTALL_LIBDIR INSTALL_BINDIR INSTALL_SHAREDIR uqm_NAME"
-SUBSTITUTE_FILES="uqm-wrapper"
-substitute_vars SUBSTITUTE_VARS SUBSTITUTE_FILES build/unix "$BUILD_WORK"
+uqm_post_install() {
+	:  # Nothing to do
+}
 
 
diff --git a/sc2/build/unix/build.sh b/sc2/build/unix/build.sh
index e934a7c36..eede70f25 100644
--- a/sc2/build/unix/build.sh
+++ b/sc2/build/unix/build.sh
@@ -95,6 +95,9 @@ export "${BUILD_PROJECT}_CFLAGS" "${BUILD_PROJECT}_LDFLAGS"
 eval ${BUILD_PROJECT}_OBJS=\${${BUILD_PROJECT}_OBJS%/}/
 export "${BUILD_PROJECT}_OBJS"
 
+# Load the configuration functions
+. build/unix/build.config
+
 if [ $# -lt 2 ]; then
 	build_check_config
 	build_check_dependencies
@@ -108,6 +111,10 @@ case "$2" in
 		;;
 	config)
 		build_config
+		build_process_config
+		;;
+	reprocess_config)
+		build_reconfig
 		;;
 	depend)
 		build_check_config
@@ -125,3 +132,4 @@ case "$2" in
 		;;
 esac
 
+
diff --git a/sc2/build/unix/build_functions b/sc2/build/unix/build_functions
index 2dcef22e9..609fd1b2e 100644
--- a/sc2/build/unix/build_functions
+++ b/sc2/build/unix/build_functions
@@ -73,6 +73,10 @@ build_rec_dependancies() {
 
 	echo "Building dependancy information..." 1>&2
 
+	# Remove the old dependency file, if it exists.
+	# The .tmp file is used to detect interrupted dependency builds.
+	rm -f -- "$DEPEND_FILE".tmp "$DEPEND_FILE"
+
 	BUILD_FILES_VAR=${BUILD_PROJECT}_EXTRA_OFILES
 	export BUILD_FILES_VAR
 	EXTRA_OFILES=`build_do_recursive build_collect_extra_o_files :`
@@ -88,7 +92,8 @@ build_rec_dependancies() {
 		done
 		echo
 		build_do_recursive build_dependancies :
-	} > "$DEPEND_FILE"
+	} > "$DEPEND_FILE".tmp
+	mv -f -- "$DEPEND_FILE".tmp "$DEPEND_FILE"
 }
 
 # Output the .o file for a .c file.
@@ -114,17 +119,38 @@ build_rec_collect_o_files() {
 }
 
 # Start the configure program.
+# $1 = target
 build_config() {
-	$SH build/unix/build.config
+	config_requirements
+	eval "${TARGET}_requirements"
+	eval "${TARGET}_prepare_config"
+	eval "${TARGET}_do_config"
+}
+
+build_reconfig() {
+	if [ ! -e "$BUILD_WORK/config.state" ]; then
+		echo "*** Warning: file 'config.state' not found - using defaults."
+	fi
+	config_requirements
+	eval "${TARGET}_requirements"
+	build_process_config
+	echo "Reconfiguring complete..." 1>&2
+}
+
+# Process the configuration information
+build_process_config() {
+	eval "${TARGET}_process_config"
 }
 
 # Compile the lot.
 # With the depend info set up, we can leave everything to make.
 build_compile() {
+	eval "${TARGET}_pre_build"
 	eval CFLAGS="\${${BUILD_PROJECT}_CFLAGS}" \
 			LDFLAGS="\${${BUILD_PROJECT}_LDFLAGS}" \
 			DEPEND_FILE="\$BUILD_WORK/.depend.\${${BUILD_PROJECT}_NAME%/}" \
 			\$MAKE -f Makefile.build "\$BUILD_WORK/target-\${${BUILD_PROJECT}_NAME}"
+	eval "${TARGET}_post_build"
 }
 
 # Description: Remove the .o file for one .c file
@@ -165,12 +191,12 @@ build_distclean() {
 # Description: check if the config files are present and load them.
 #              If they're not present, remake them.
 build_check_config() {
-	[ ! -e "$BUILD_WORK/build.vars" -o -n "$BUILD_RUN_CONFIG" ] || return
+	[ ! -e "$BUILD_WORK/build.vars" ] || return
 
 	build_config || exit $?
+	build_process_config
 	. "$BUILD_WORK/build.vars"
 	. "${BUILD_REC_PATH:=./}Makeinfo"
-	unset BUILD_RUN_CONFIG
 }
 
 # Description: check if the necessary .depend file is present,
@@ -265,6 +291,8 @@ installsome() {
 # Install the program
 build_install() {
 	local SRC DEST MODE OWNER
+	
+	eval "${TARGET}_pre_install"
 
 	local LIB LIBS LIBDIR
 	echo "Installing system-dependant data..." 1>&2
@@ -304,6 +332,8 @@ build_install() {
 		eval OWNER="\${${BUILD_PROJECT}_INSTALL_BIN_${BIN}_OWNER}"
 		installsome "$SRC" "$DEST" "$MODE" "$OWNER"
 	done
+
+	eval "${TARGET}_post_install"
 }
 
 
diff --git a/sc2/build/unix/config_functions b/sc2/build/unix/config_functions
index 5ddc4657a..aab3b6f00 100644
--- a/sc2/build/unix/config_functions
+++ b/sc2/build/unix/config_functions
@@ -386,12 +386,14 @@ EOF
 # Some initialisations
 HAVE_SYMBOLS=""
 
-# Requirements for the config program itself
-have_program sed || exit 1
-SED="$PROG_sed_FILE"
-have_program tr || exit 1
-TR="$PROG_tr_FILE"
-have_program make || exit 1
-MAKE="$PROG_make_FILE"
+config_requirements() {
+	# Requirements for the config program itself
+	have_program sed || exit 1
+	SED="$PROG_sed_FILE"
+	have_program tr || exit 1
+	TR="$PROG_tr_FILE"
+	have_program make || exit 1
+	MAKE="$PROG_make_FILE"
+}
 
 
diff --git a/sc2/build/unix/menu_functions b/sc2/build/unix/menu_functions
index 3b0da961a..0a472d636 100644
--- a/sc2/build/unix/menu_functions
+++ b/sc2/build/unix/menu_functions
@@ -603,28 +603,49 @@ menu_process_check() {
 # Description: Start processing a menu
 # Arguments:   $1 - the type of the main menu
 #              $2 - the name of the main menu
-#              $3 - the path to the file to load and save the settings from/to
-#                   (the file does not have to exist; in this case nothing is
-#                   loaded)
-#                   if the argument is empty, nothing is saved nor loaded
 do_menu() {
 	local MENU_TYPE START_MENU SAVE_FILE
 	
-	MENU_TYPE="$1"
-	START_MENU="$2"
-	SAVE_FILE="$3"
+	MENU_TYPE=$1
+	START_MENU=$2
 
-	if [ -n "$SAVE_FILE" -a -e "$SAVE_FILE" ]; then
-		. "$SAVE_FILE"
-	fi
 	menu_init "$MENU_TYPE" "$START_MENU"
 	menu_handle "$MENU_TYPE" "$START_MENU"
 	echo
-	if [ -n "$SAVE_FILE" ]; then
-		echo "Saving choices..."
-		menu_save "$MENU_TYPE" "$START_MENU" > "$SAVE_FILE"
-	fi
-#	echo "Propagating choices..."
-	menu_process "$MENU_TYPE" "$START_MENU"
 }
 
+# Description: Load the menu settings from file
+# Arguments:   $1 - the type of the menu (currently ignored)
+#              $2 - the name of the menu (currently ignored)
+#              $3 - the name of the file to load from
+# Returns:     0 - if the file was loaded successfully
+#              1 - if the file did not exist
+menu_load() {
+	SAVE_FILE=$3
+
+	if [ ! -e "$SAVE_FILE" ]; then
+		return 1
+	fi
+
+	. "$SAVE_FILE"
+	return 0
+}
+
+# Description: Save the menu settings to file
+# Arguments:   $1 - the type of the menu
+#              $2 - the name of the menu
+#              $3 - the name of the file to save to
+# Returns:     0 - if the file was saved successfully
+menu_save() {
+	MENU_TYPE=$1
+	START_MENU=$2
+	SAVE_FILE=$3
+
+	echo "Saving choices..."
+	menu_save "$MENU_TYPE" "$START_MENU" > "$SAVE_FILE"
+	return 0
+}
+
+
+
+