Initial commit

poky/meta/classes-recipe/cargo.bbclass

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+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+##
+## Purpose:
+## This class is used by any recipes that are built using
+## Cargo.
+
+inherit cargo_common
+inherit rust-target-config
+
+# the binary we will use
+CARGO = "cargo"
+
+# We need cargo to compile for the target
+BASEDEPENDS:append = " cargo-native"
+
+# Ensure we get the right rust variant
+DEPENDS:append:class-target = " rust-native ${RUSTLIB_DEP}"
+DEPENDS:append:class-nativesdk = " rust-native ${RUSTLIB_DEP}"
+DEPENDS:append:class-native = " rust-native"
+
+# Enable build separation
+B = "${WORKDIR}/build"
+
+# In case something fails in the build process, give a bit more feedback on
+# where the issue occured
+export RUST_BACKTRACE = "1"
+
+# The directory of the Cargo.toml relative to the root directory, per default
+# assume there's a Cargo.toml directly in the root directory
+CARGO_SRC_DIR ??= ""
+
+# The actual path to the Cargo.toml
+MANIFEST_PATH ??= "${S}/${CARGO_SRC_DIR}/Cargo.toml"
+
+RUSTFLAGS ??= ""
+BUILD_MODE = "${@['--release', ''][d.getVar('DEBUG_BUILD') == '1']}"
+CARGO_BUILD_FLAGS = "-v --offline --target ${RUST_HOST_SYS} ${BUILD_MODE} --manifest-path=${MANIFEST_PATH}"
+
+# This is based on the content of CARGO_BUILD_FLAGS and generally will need to
+# change if CARGO_BUILD_FLAGS changes.
+BUILD_DIR = "${@['release', 'debug'][d.getVar('DEBUG_BUILD') == '1']}"
+CARGO_TARGET_SUBDIR="${RUST_HOST_SYS}/${BUILD_DIR}"
+oe_cargo_build () {
+	export RUSTFLAGS="${RUSTFLAGS}"
+	bbnote "Using rust targets from ${RUST_TARGET_PATH}"
+	bbnote "cargo = $(which ${CARGO})"
+	bbnote "${CARGO} build ${CARGO_BUILD_FLAGS} $@"
+	"${CARGO}" build ${CARGO_BUILD_FLAGS} "$@"
+}
+
+do_compile[progress] = "outof:\s+(\d+)/(\d+)"
+cargo_do_compile () {
+	oe_cargo_build
+}
+
+cargo_do_install () {
+	local have_installed=false
+	for tgt in "${B}/target/${CARGO_TARGET_SUBDIR}/"*; do
+		case $tgt in
+		*.so|*.rlib)
+			install -d "${D}${rustlibdir}"
+			install -m755 "$tgt" "${D}${rustlibdir}"
+			have_installed=true
+			;;
+		*examples)
+			if [ -d "$tgt" ]; then
+				for example in "$tgt/"*; do
+					if [ -f "$example" ] && [ -x "$example" ]; then
+						install -d "${D}${bindir}"
+						install -m755 "$example" "${D}${bindir}"
+						have_installed=true
+					fi
+				done
+			fi
+			;;
+		*)
+			if [ -f "$tgt" ] && [ -x "$tgt" ]; then
+				install -d "${D}${bindir}"
+				install -m755 "$tgt" "${D}${bindir}"
+				have_installed=true
+			fi
+			;;
+		esac
+	done
+	if ! $have_installed; then
+		die "Did not find anything to install"
+	fi
+}
+
+EXPORT_FUNCTIONS do_compile do_install