OpenDingux/RetroFW build cleanup

1. Now that all the buildroots we need are open-source,
   use defconfigs that ship with them instead of rolling our own.
2. New script: Packagaging/OpenDingux/build-all.sh
3. To avoid polluting top-level home directory, buildroot location
   changed to `~/devilutionx-buildroot/$BUILDROOT_TARGET`.
4. Move OPK packaging script to its own file. This is to be able
   to make a package for devilutionX in the buildroot itself.

Packaging/OpenDingux/build-all.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+cd "$(dirname "${BASH_SOURCE[0]}")/../.."
+
+source Packaging/OpenDingux/targets.sh
+
+for target in "${VALID_TARGETS[@]}"; do
+	Packaging/OpenDingux/build.sh "$target"
+done

Packaging/OpenDingux/build.sh

@@ -2,48 +2,38 @@
 
 set -euo pipefail
 
+cd "$(dirname "${BASH_SOURCE[0]}")/../.."
+
+source Packaging/OpenDingux/targets.sh
+source Packaging/OpenDingux/package-opk.sh
+
 usage() {
-	echo "Usage: build.sh [target]"
-	echo "	target: target platform: rg350, gkd350h, or retrofw"
+  echo "Usage: build.sh [target]"
+  usage_target
 }
 
-if [[ $# -ne 1 ]]; then
-	echo "Error: target is missing"
-	usage
-	exit 1
-fi
-
-if [[ $1 != rg350 ]] && [[ $1 != retrofw ]] && [[ $1 != gkd350h ]]; then
-	echo "Error: invalid target"
-	usage
-	exit 1
+if ! check_target "$@"; then
+  usage
+  exit 64
 fi
 
-cd "$(dirname "${BASH_SOURCE[0]}")/../.."
-
-declare -r TARGET="${1}"
+declare -r TARGET="$1"
 declare -r BUILD_DIR="build-${TARGET}"
-
 declare -rA BUILDROOT_REPOS=(
 	[retrofw]=https://github.com/retrofw/buildroot.git
 	[rg350]=https://github.com/tonyjih/RG350_buildroot.git
 )
+declare -rA BUILDROOT_DEFCONFIGS=(
+	[retrofw]='RetroFW_defconfig BR2_EXTERNAL=retrofw'
+	[rg350]='rg350_defconfig BR2_EXTERNAL=board/opendingux'
+)
 
-declare BUILDROOT_DEFCONFIG
-declare BUILDROOT_REPO
-
-set_buildroot_vars() {
-	BUILDROOT_DEFCONFIG="$1_devilutionx_defconfig"
-	BUILDROOT_REPO="${BUILDROOT_REPOS[$1]}"
-	BUILDROOT="${BUILDROOT:-$HOME/buildroot-$1-devilutionx}"
-}
-
-# Use the rg350 buildroot for gkd350h because gkd350h buildroot is not open-source.
+declare BUILDROOT_TARGET="$TARGET"
 if [[ $TARGET == gkd350h ]]; then
-	set_buildroot_vars rg350
-else
-	set_buildroot_vars "$TARGET"
+	# Use the rg350 buildroot for gkd350h because gkd350h buildroot is not open-source.
+	BUILDROOT_TARGET=rg350
 fi
+BUILDROOT="${BUILDROOT:-$HOME/devilutionx-buildroots/$BUILDROOT_TARGET}"
 
 main() {
 	>&2 echo "Building for target ${TARGET} in ${BUILD_DIR}"
@@ -51,20 +41,21 @@ main() {
 	prepare_buildroot
 	make_buildroot
 	build
-	package
+	package_opk
 }
 
 prepare_buildroot() {
 	if [[ -d $BUILDROOT ]]; then
 		return
 	fi
-	git clone --depth=1 "${BUILDROOT_REPOS[$TARGET]}" "$BUILDROOT"
+	git clone --depth=1 "${BUILDROOT_REPOS[$BUILDROOT_TARGET]}" "$BUILDROOT"
+	cd "$BUILDROOT"
+	make ${BUILDROOT_DEFCONFIGS[$BUILDROOT_TARGET]}
+	cd -
 }
 
 make_buildroot() {
-	cp "Packaging/OpenDingux/$BUILDROOT_DEFCONFIG" "$BUILDROOT/configs/"
 	cd "$BUILDROOT"
-	make "$BUILDROOT_DEFCONFIG"
 	BR2_JLEVEL=0 make toolchain libzip sdl sdl_mixer sdl_ttf
 	cd -
 }
@@ -79,21 +70,4 @@ build() {
 	cd -
 }
 
-package() {
-	local ext=gcw0
-	if [[ $TARGET == retrofw ]]; then
-	  ext=retrofw
-	fi
-	local -r tmp="${BUILD_DIR}/opk"
-	rm -rf "$tmp"
-	mkdir -p "$tmp"
-	cp "Packaging/OpenDingux/${TARGET}.desktop" "${tmp}/default.${ext}.desktop"
-	cp "Packaging/OpenDingux/${TARGET}-manual.txt" "${tmp}/readme.${ext}.txt"
-	mksquashfs "${BUILD_DIR}/devilutionx" \
-		"${tmp}/default.${ext}.desktop" "${tmp}/readme.${ext}.txt" \
-		Packaging/resources/Diablo_32.png Packaging/resources/CharisSILB.ttf \
-		"${BUILD_DIR}/devilutionx-${TARGET}.opk" \
-		-all-root -no-xattrs -noappend -no-exports
-}
-
 main

Packaging/OpenDingux/package-opk.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+package_opk() {
+	local ext
+	if [[ $TARGET == rg350 ]] || [[ $TARGET == gkd350h ]]; then
+		ext=gcw0
+	else
+		ext="$TARGET"
+	fi
+	local -r tmp="${BUILD_DIR}/opk"
+	set -x
+	rm -rf "$tmp"
+	mkdir -p "$tmp"
+	cp "Packaging/OpenDingux/${TARGET}.desktop" "${tmp}/default.${ext}.desktop"
+	cp "Packaging/OpenDingux/${TARGET}-manual.txt" "${tmp}/readme.${ext}.txt"
+	mksquashfs "${BUILD_DIR}/devilutionx" \
+		"${tmp}/default.${ext}.desktop" "${tmp}/readme.${ext}.txt" \
+		Packaging/resources/Diablo_32.png Packaging/resources/CharisSILB.ttf \
+		"${BUILD_DIR}/devilutionx-${TARGET}.opk" \
+		-all-root -no-xattrs -noappend -no-exports -no-progress
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+	set -euo pipefail
+
+	cd "$(dirname "${BASH_SOURCE[0]}")/../.."
+
+	source Packaging/OpenDingux/targets.sh
+
+	usage() {
+		echo "Usage: package-opk.sh [target]"
+		usage_target
+	}
+
+	if ! check_target "$@"; then
+		usage
+		exit 64
+	fi
+
+	declare -r TARGET="$1"
+	declare -r BUILD_DIR="build-${TARGET}"
+	package_opk
+fi

Packaging/OpenDingux/retrofw_devilutionx_defconfig

@@ -1,9 +0,0 @@
-BR2_mipsel=y
-# BR2_MIPS_SOFT_FLOAT is not set
-BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
-BR2_TOOLCHAIN_BUILDROOT_CXX=y
-BR2_PACKAGE_SDL=y
-BR2_PACKAGE_SDL_MIXER=y
-BR2_PACKAGE_SDL_TTF=y
-BR2_PACKAGE_LIBZIP=y
-BR2_PACKAGE_LIBSODIUM=y

Packaging/OpenDingux/rg350_devilutionx_defconfig

@@ -1,20 +0,0 @@
-BR2_mipsel=y
-BR2_mips_xburst=y
-# BR2_MIPS_SOFT_FLOAT is not set
-BR2_OPTIMIZE_2=y
-BR2_KERNEL_HEADERS_3_12=y
-BR2_UCLIBC_CONFIG="board/opendingux/gcw0/uclibc.config"
-BR2_TOOLCHAIN_BUILDROOT_LARGEFILE=y
-BR2_TOOLCHAIN_BUILDROOT_INET_IPV6=y
-BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
-BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-lto"
-BR2_GCC_VERSION_5_X=y
-BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-lto"
-BR2_TOOLCHAIN_BUILDROOT_CXX=y
-BR2_PACKAGE_SDL=y
-BR2_PACKAGE_SDL_MIXER=y
-BR2_PACKAGE_SDL_TTF=y
-BR2_PACKAGE_ETNA_VIV=y
-BR2_PACKAGE_ETNA_VIV_ABIV4=y
-BR2_PACKAGE_MESA3D_ETNA_VIV=y
-BR2_PACKAGE_LIBZIP=y

Packaging/OpenDingux/targets.sh

@@ -0,0 +1,25 @@
+declare -ra VALID_TARGETS=(
+  retrofw
+  rg350
+)
+
+usage_target() {
+  echo -n "	target: target platform:"
+  printf " %s" "${VALID_TARGETS[@]}"
+  echo
+}
+
+check_target() {
+  if [[ $# -eq 0 ]] || [[ -z $1 ]]; then
+    echo "Error: target is missing"
+    return 1
+  fi
+
+  for target in "${VALID_TARGETS[@]}"; do
+    if [[ $target == $1 ]]; then
+      return 0
+    fi
+  done
+  echo "Error: invalid target"
+  return 1
+}