OPENDINGUX: Lighten build process by not building useless packages

scummvm · Jan 30, 2022 · f0dd658 · f0dd658
1 parent d30904e
commit f0dd658
Showing 1 changed file with 81 additions and 4 deletions.
diff --git a/toolchains/opendingux-beta/packages/toolchain/build.sh b/toolchains/opendingux-beta/packages/toolchain/build.sh
@@ -23,14 +23,91 @@ num_cpus=$(nproc || grep -c ^processor /proc/cpuinfo || echo 1)
 MAKEOPTS="-j${num_cpus}"
 NICEOPTS="-n0"
 
+# We will cleanup defconfig to have a small build just enough for us
+WHITELIST=$(cat <<-"EOF"
+	BUSYBOX.*
+	FLAC
+	FLUIDSYNTH
+	MESA3D.*
+	SDL
+	SDL_KMSDRM
+	SDL_NET
+	SDL2
+	SDL2_KMSDRM
+	SDL2_OPENGLES
+	SDL2_NET
+	ALSA_LIB.*
+	LIBMAD
+	LIBVORBIS
+	TREMOR
+	FREETYPE
+	JPEG
+	LIBDRM
+	LIBPNG
+	TSLIB
+	LIBTHEORA
+	NCURSES.*
+	READLINE
+	UTIL_LINUX_LIBMOUNT
+	LIBJPEG8
+EOF
+)
+
+lighten() {
+	local full orig target dest
+
+	target=$1
+
+	full=$(mktemp -d)
+	orig=$(mktemp)
+	dest="configs/od_${target}_defconfig"
+
+	# Create the standard config to know which libraries are really present in the full toolchain
+	make "od_${target}_defconfig" BR2_EXTERNAL=board/opendingux O="$full"
+
+	cp "$dest" "$orig"
+
+	# Remove all packages
+	grep -v '^BR2_PACKAGE' "$orig" > "$dest"
+	# Remove some other settings
+	sed -i '/^BR2_TARGET_ROOTFS_SQUASHFS=y/d' "$dest"
+
+	# Add whitelisted packages which are already enabled
+	echo "$WHITELIST" | while read pkg; do
+		grep "^BR2_PACKAGE_$pkg=" "$full/.config" >> "$dest" || true
+	done
+
+	# Disable now useless scripts
+	sed -i '/^BR2_ROOTFS_POST_BUILD_SCRIPT=/s|board/opendingux/[^/]\+/cleanup-rootfs.sh||' "$dest"
+	sed -i '/^BR2_ROOTFS_POST_BUILD_SCRIPT=/s|board/opendingux/create-modules-fs.sh||' "$dest"
+	# Remove all blanks
+	sed -i '/^BR2_ROOTFS_POST_BUILD_SCRIPT=/s| \+| |g' "$dest"
+	sed -i '/^BR2_ROOTFS_POST_BUILD_SCRIPT=/s|=" *|="|' "$dest"
+	sed -i '/^BR2_ROOTFS_POST_BUILD_SCRIPT=/s| *"$|"|' "$dest"
+
+	# Don't build a kernel, only headers
+	sed -i 's/^BR2_LINUX_KERNEL=y$/# BR2_LINUX_KERNEL is not set/' "$dest"
+	echo "BR2_PACKAGE_LINUX_HEADERS=y" >> "$dest"
+	# Move kernel configuration to headers (not perfect but good enough)
+	sed -i 's/^BR2_LINUX_KERNEL_/BR2_KERNEL_HEADERS_/' "$dest"
+
+	# Disable buildroot default settings
+	echo '# BR2_PACKAGE_EUDEV_ENABLE_HWDB is not set' >> "$dest"
+	echo '# BR2_PACKAGE_URANDOM_SCRIPTS is not set' >> "$dest"
+
+	# Enable ccache (this will help a little between targets)
+	echo 'BR2_CCACHE=y' >> "$dest"
+	echo 'BR2_CCACHE_DIR="$(TOPDIR)/ccache"' >> "$dest"
+
+	rm "$orig"
+	rm -rf "$full"
+}
+
 mkdir -p "${OPENDINGUX_ROOT}/"
 for target in $TARGETS; do
 
 	# Lighten build process by removing useless packages for us
-	for conf in BR2_PACKAGE_HOST_GDB BR2_PACKAGE_VALGRIND BR2_PACKAGE_GDB BR2_PACKAGE_GDB_SERVER BR2_PACKAGE_GDB_DEBUGGER \
-		BR2_PACKAGE_STRACE BR2_PACKAGE_STRESS BR2_PACKAGE_APITRACE; do
-		sed -i -e "s/^${conf}=.*$/# ${conf} is not set/" configs/od_${target}_defconfig
-	done
+	lighten "$target"
 
 	CONFIG=$target ./rebuild.sh
 	tar -C "${OPENDINGUX_ROOT}/" -xJf output/$target/images/opendingux-$target-toolchain.*.tar.xz