BuildSystem: Rewrite port compilation system

Now ports define some environment variables, and call a unified bash
script that handles configuration, recompilation and installation.

If a port uses non-configure buildsystem, port script can also specify
custom build and install step.

ports/doom/.gitignore

@@ -1,2 +0,0 @@
-doomgeneric/
-doom1.wad

ports/doom/README.md

@@ -1 +0,0 @@
-This is a port of doomgeneric. You will need doom wad to play. Copy the wad file into sysroot and use the -iwad argument to specify wad location.

ports/doom/build.sh

@@ -1,33 +1,17 @@
-#!/bin/sh
+#!/bin/bash ../install.sh
 
-if [ -z $BANAN_ARCH ]; then
-	echo  "You must set the BANAN_ARCH environment variable" >&2
-	exit 1
-fi
+NAME='doom'
+VERSION='git'
+DOWNLOAD_URL="https://github.com/ozkl/doomgeneric.git#613f870b6fa83ede448a247de5a2571092fa729d"
 
-if [ -z $BANAN_SYSROOT ]; then
-	echo  "You must set the BANAN_ARCH environment variable" >&2
-	exit 1
-fi
+build() {
+	if [ ! -f doom1.wad ]; then
+		wget https://distro.ibiblio.org/slitaz/sources/packages/d/doom1.wad || exit 1
+	fi
+	make --directory doomgeneric --file Makefile.banan_os -j$(nproc) || exit 1
+}
 
-cd $(dirname $(realpath $0))
-
-if [ ! -d "doomgeneric" ]; then
-	git clone https://github.com/ozkl/doomgeneric.git
-	cd doomgeneric
-	git checkout 613f870b6fa83ede448a247de5a2571092fa729d
-	for patch in ../patches/*; do
-		git am "$patch"
-	done
-	cd ..
-
-	grep -qxF doom ../installed || echo doom >> ../installed
-fi
-
-if [ ! -f doom1.wad ]; then
-	wget https://distro.ibiblio.org/slitaz/sources/packages/d/doom1.wad
-fi
-
-make --directory doomgeneric/doomgeneric --file Makefile.banan_os -j $(nproc)
-cp "doomgeneric/doomgeneric/build-${BANAN_ARCH}/doomgeneric" "${BANAN_SYSROOT}/bin/doom"
-cp doom1.wad $BANAN_SYSROOT/home/user/
+install() {
+	cp doomgeneric/build/doom "${BANAN_SYSROOT}/bin/" || exit 1
+	cp ./doom1.wad "$BANAN_SYSROOT/home/user/" || exit 1
+}

ports/doom/patches/0001-Add-support-for-banan-os.patch

@@ -29,16 +29,16 @@ index 0000000..0878148
 +	VB=@
 +endif
 +
-+CC=$(BANAN_TOOLCHAIN_PREFIX)/bin/$(BANAN_ARCH)-banan_os-gcc
-+CXX=$(BANAN_TOOLCHAIN_PREFIX)/bin/$(BANAN_ARCH)-banan_os-g++
++CC=$(BANAN_ARCH)-banan_os-gcc
++CXX=$(BANAN_ARCH)-banan_os-g++
 +CFLAGS+=-O3 -Wall -DNORMALUNIX -DLINUX -DSNDSERV -D_DEFAULT_SOURCE
 +CXXFLAGS+=$(CFLAGS) --std=c++20
 +LDFLAGS+=
 +LIBS+=-lgui -linput -lstdc++
 +
 +# subdirectory for objects
-+OBJDIR=build-$(BANAN_ARCH)
-+OUTPUT=$(OBJDIR)/doomgeneric
++OBJDIR=build
++OUTPUT=$(OBJDIR)/doom
 +
 +SRC_DOOM = dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_banan_os.o
 +OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))