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+##
+## Purpose:
+## This class is to support building with cargo. It
+## must be different than cargo.bbclass because Rust
+## now builds with Cargo but cannot use cargo.bbclass
+## due to dependencies and assumptions in cargo.bbclass
+## that Rust & Cargo are already installed. So this
+## is used by cargo.bbclass and Rust
+##
+
+# add crate fetch support
+inherit rust-common
+
+# Where we download our registry and dependencies to
+export CARGO_HOME = "${WORKDIR}/cargo_home"
+
+# The pkg-config-rs library used by cargo build scripts disables itself when
+# cross compiling unless this is defined. We set up pkg-config appropriately
+# for cross compilation, so tell it we know better than it.
+export PKG_CONFIG_ALLOW_CROSS = "1"
+
+# Don't instruct cargo to use crates downloaded by bitbake. Some rust packages,
+# for example the rust compiler itself, come with their own vendored sources.
+# Specifying two [source.crates-io] will not work.
+CARGO_DISABLE_BITBAKE_VENDORING ?= "0"
+
+# Used by libstd-rs to point to the vendor dir included in rustc src
+CARGO_VENDORING_DIRECTORY ?= "${CARGO_HOME}/bitbake"
+
+CARGO_RUST_TARGET_CCLD ?= "${RUST_TARGET_CCLD}"
+cargo_common_do_configure () {
+ mkdir -p ${CARGO_HOME}/bitbake
+
+ cat <<- EOF > ${CARGO_HOME}/config
+ # EXTRA_OECARGO_PATHS
+ paths = [
+ $(for p in ${EXTRA_OECARGO_PATHS}; do echo \"$p\",; done)
+ ]
+ EOF
+
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ # Local mirror vendored by bitbake
+ [source.bitbake]
+ directory = "${CARGO_VENDORING_DIRECTORY}"
+ EOF
+
+ if [ -z "${EXTERNALSRC}" ] && [ ${CARGO_DISABLE_BITBAKE_VENDORING} = "0" ]; then
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ [source.crates-io]
+ replace-with = "bitbake"
+ local-registry = "/nonexistant"
+ EOF
+ fi
+
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ [http]
+ # Multiplexing can't be enabled because http2 can't be enabled
+ # in curl-native without dependency loops
+ multiplexing = false
+
+ # Ignore the hard coded and incorrect path to certificates
+ cainfo = "${STAGING_ETCDIR_NATIVE}/ssl/certs/ca-certificates.crt"
+
+ EOF
+
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ # HOST_SYS
+ [target.${HOST_SYS}]
+ linker = "${CARGO_RUST_TARGET_CCLD}"
+ EOF
+
+ if [ "${HOST_SYS}" != "${BUILD_SYS}" ]; then
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ # BUILD_SYS
+ [target.${BUILD_SYS}]
+ linker = "${RUST_BUILD_CCLD}"
+ EOF
+ fi
+
+ # Put build output in build directory preferred by bitbake instead of
+ # inside source directory unless they are the same
+ if [ "${B}" != "${S}" ]; then
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ [build]
+ # Use out of tree build destination to avoid poluting the source tree
+ target-dir = "${B}/target"
+ EOF
+ fi
+
+ cat <<- EOF >> ${CARGO_HOME}/config
+
+ [term]
+ progress.when = 'always'
+ progress.width = 80
+ EOF
+}
+
+oe_cargo_fix_env () {
+ export CC="${RUST_TARGET_CC}"
+ export CXX="${RUST_TARGET_CXX}"
+ export CFLAGS="${CFLAGS}"
+ export CXXFLAGS="${CXXFLAGS}"
+ export AR="${AR}"
+ export TARGET_CC="${RUST_TARGET_CC}"
+ export TARGET_CXX="${RUST_TARGET_CXX}"
+ export TARGET_CFLAGS="${CFLAGS}"
+ export TARGET_CXXFLAGS="${CXXFLAGS}"
+ export TARGET_AR="${AR}"
+ export HOST_CC="${RUST_BUILD_CC}"
+ export HOST_CXX="${RUST_BUILD_CXX}"
+ export HOST_CFLAGS="${BUILD_CFLAGS}"
+ export HOST_CXXFLAGS="${BUILD_CXXFLAGS}"
+ export HOST_AR="${BUILD_AR}"
+}
+
+EXTRA_OECARGO_PATHS ??= ""
+
+EXPORT_FUNCTIONS do_configure