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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"
+
+RUSTFLAGS ??= ""
+BUILD_MODE = "${@['--release', ''][d.getVar('DEBUG_BUILD') == '1']}"
+# --frozen flag will prevent network access (which is required since only
+# the do_fetch step is authorized to access network)
+# and will require an up to date Cargo.lock file.
+# This force the package being built to already ship a Cargo.lock, in the end
+# this is what we want, at least, for reproducibility of the build.
+CARGO_BUILD_FLAGS = "-v --frozen --target ${RUST_HOST_SYS} ${BUILD_MODE} --manifest-path=${CARGO_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