new package: vulkan-loader-android

Vulkan Loader for Android

packages/vulkan-loader-android/build.sh

@@ -0,0 +1,54 @@
+TERMUX_PKG_HOMEPAGE=https://source.android.com/devices/graphics/arch-vulkan
+TERMUX_PKG_DESCRIPTION="Vulkan Loader for Android"
+TERMUX_PKG_LICENSE="NCSA"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION=$TERMUX_NDK_VERSION
+TERMUX_PKG_SKIP_SRC_EXTRACT=true
+
+# Desktop Vulkan Loader
+# https://github.com/KhronosGroup/Vulkan-Loader
+# https://github.com/KhronosGroup/Vulkan-Loader/blob/master/loader/LoaderAndLayerInterface.md
+
+# Android Vulkan Loader
+# https://source.android.com/devices/graphics/arch-vulkan
+# https://android.googlesource.com/platform/frameworks/native/+/master/vulkan
+
+# They are incompatible with each other and maintained by different
+# organisations
+# For now this package provides the NDK stub libvulkan.so
+# The package will symbolic link system provided libvulkan.so to Termux Prefix
+# if available
+
+termux_step_extract_into_massagedir() {
+	mkdir -p "$TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/lib"
+	if [ "$TERMUX_ARCH" = "aarch64" ]; then
+		_ARCH="arm64"
+	elif [ "$TERMUX_ARCH" = "i686" ]; then
+		_ARCH="x86"
+	else
+		_ARCH="$TERMUX_ARCH"
+	fi
+	# aarch64 dont follow the lib64 trend or
+	# x86_64 dont follow the lib trend
+	if [ "$TERMUX_ARCH" = "x86_64" ]; then _BITS=64; else _BITS=""; fi
+	cp "$NDK/platforms/android-${TERMUX_PKG_API_LEVEL}/arch-${_ARCH}/usr/lib${_BITS}/libvulkan.so" \
+		"$TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/lib/libvulkan.so"
+	unset _ARCH
+}
+
+termux_step_create_debscripts() {
+	if [ "$TERMUX_ARCH_BITS" = 64 ]; then _BITS=64; else _BITS=""; fi
+	cat <<- EOF > postinst
+	#!$TERMUX_PREFIX/bin/sh
+	if [ -e /system/lib${_BITS}/libvulkan.so ]; then
+		echo "Symlink /system/lib${_BITS}/libvulkan.so to $TERMUX_PREFIX/lib/libvulkan.so ..."
+		ln -fsT "/system/lib${_BITS}/libvulkan.so" "$TERMUX_PREFIX/lib/libvulkan.so"
+	fi
+	EOF
+	
+	cat <<- EOF > postrm
+	#!$TERMUX_PREFIX/bin/sh
+	rm -f "$TERMUX_PREFIX/lib/libvulkan.so"
+	EOF
+	unset _BITS
+}