rust: initial merge of most of meta-rust

In the meta-rust repo at commit:
   448047c Upgrade to 1.54.0 (#359)

Make the required directories:
  mkdir ../oe-core/meta/recipes-devtools/rust
  mkdir ../oe-core/meta/recipes-devtools/cargo
  mkdir ../oe-core/meta/recipes-example
and then:
  cp recipes-devtools/rust/* ../oe-core/meta/recipes-devtools/rust
  cp recipes-devtools/cargo/* ../oe-core/meta/recipes-devtools/cargo
  cp lib/crate.py ../oe-core/meta/lib
  cp recipes-example/* ../oe-core/meta/recipes-example
  cp conf/distro/include/rust_* ../oe-core/meta/conf/distro/include/
  cp classes/* ../oe-core/meta/classes/
  cp recipes-core/packagegroups/packagegroup-rust-cross-canadian.bb ../oe-core/meta/recipes-core/packagegroups

(From OE-Core rev: 3ed57578cca93ff1ba4e0bf3f25566e10659a2f9)

Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 193 insertions, 0 deletions

diff --git a/meta/recipes-devtools/rust/rust.inc b/meta/recipes-devtools/rust/rust.inc
new file mode 100644
index 0000000000..6045ab4d42
--- /dev/null
+++ b/meta/recipes-devtools/rust/rust.inc
@@ -0,0 +1,193 @@
+SUMMARY = "Rust compiler and runtime libaries"
+HOMEPAGE = "http://www.rust-lang.org"
+SECTION = "devel"
+LICENSE = "MIT | Apache-2.0"
+LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=93a95682d51b4cb0a633a97046940ef0"
+
+inherit rust
+inherit cargo_common
+
+DEPENDS += "file-native python3-native"
+DEPENDS:append:class-native = " rust-llvm-native"
+
+S = "${RUSTSRC}"
+
+# We generate local targets, and need to be able to locate them
+export RUST_TARGET_PATH="${WORKDIR}/targets/"
+
+export FORCE_CRATE_HASH="${BB_TASKHASH}"
+
+RUST_ALTERNATE_EXE_PATH ?= "${STAGING_LIBDIR}/llvm-rust/bin/llvm-config"
+export YOCTO_ALTERNATE_EXE_PATH = "${RUST_ALTERNATE_EXE_PATH}"
+export YOCTO_ALTERNATE_MULTILIB_NAME = "/${BASELIB}"
+
+# We don't want to use bitbakes vendoring because the rust sources do their
+# own vendoring.
+CARGO_DISABLE_BITBAKE_VENDORING = "1"
+
+# We can't use RUST_BUILD_SYS here because that may be "musl" if
+# TCLIBC="musl". Snapshots are always -unknown-linux-gnu
+SNAPSHOT_BUILD_SYS = "${BUILD_ARCH}-unknown-linux-gnu"
+setup_cargo_environment () {
+    # The first step is to build bootstrap and some early stage tools,
+    # these are build for the same target as the snapshot, e.g.
+    # x86_64-unknown-linux-gnu.
+    # Later stages are build for the native target (i.e. target.x86_64-linux)
+    cargo_common_do_configure
+
+    printf '[target.%s]\n' "${SNAPSHOT_BUILD_SYS}" >> ${CARGO_HOME}/config
+    printf "linker = '%s'\n" "${RUST_BUILD_CCLD}" >> ${CARGO_HOME}/config
+}
+
+include rust-common.inc
+
+do_rust_setup_snapshot () {
+    for installer in "${WORKDIR}/rust-snapshot-components/"*"/install.sh"; do
+        "${installer}" --prefix="${WORKDIR}/rust-snapshot" --disable-ldconfig
+    done
+
+    # Some versions of rust (e.g. 1.18.0) tries to find cargo in stage0/bin/cargo
+    # and fail without it there.
+    mkdir -p ${RUSTSRC}/build/${BUILD_SYS}
+    ln -sf ${WORKDIR}/rust-snapshot/ ${RUSTSRC}/build/${BUILD_SYS}/stage0
+}
+addtask rust_setup_snapshot after do_unpack before do_configure
+do_rust_setup_snapshot[dirs] += "${WORKDIR}/rust-snapshot"
+
+python do_configure() {
+    import json
+    try:
+        import configparser
+    except ImportError:
+        import ConfigParser as configparser
+
+    # toml is rather similar to standard ini like format except it likes values
+    # that look more JSON like. So for our purposes simply escaping all values
+    # as JSON seem to work fine.
+
+    e = lambda s: json.dumps(s)
+
+    config = configparser.RawConfigParser()
+
+    # [target.ARCH-poky-linux]
+    target_section = "target.{}".format(d.getVar('TARGET_SYS', True))
+    config.add_section(target_section)
+
+    llvm_config = d.expand("${YOCTO_ALTERNATE_EXE_PATH}")
+    config.set(target_section, "llvm-config", e(llvm_config))
+
+    config.set(target_section, "cxx", e(d.expand("${RUST_TARGET_CXX}")))
+    config.set(target_section, "cc", e(d.expand("${RUST_TARGET_CC}")))
+
+    # If we don't do this rust-native will compile it's own llvm for BUILD.
+    # [target.${BUILD_ARCH}-unknown-linux-gnu]
+    target_section = "target.{}".format(d.getVar('SNAPSHOT_BUILD_SYS', True))
+    config.add_section(target_section)
+
+    config.set(target_section, "llvm-config", e(llvm_config))
+
+    config.set(target_section, "cxx", e(d.expand("${RUST_BUILD_CXX}")))
+    config.set(target_section, "cc", e(d.expand("${RUST_BUILD_CC}")))
+
+    # [rust]
+    config.add_section("rust")
+    config.set("rust", "rpath", e(True))
+    config.set("rust", "channel", e("stable"))
+
+    # Whether or not to optimize the compiler and standard library
+    config.set("rust", "optimize", e(True))
+
+    # [build]
+    config.add_section("build")
+    config.set("build", "submodules", e(False))
+    config.set("build", "docs", e(False))
+
+    rustc = d.expand("${WORKDIR}/rust-snapshot/bin/rustc")
+    config.set("build", "rustc", e(rustc))
+
+    # Support for the profiler runtime to generate e.g. coverage report,
+    # PGO etc.
+    config.set("build", "profiler", e(True))
+
+    cargo = d.expand("${WORKDIR}/rust-snapshot/bin/cargo")
+    config.set("build", "cargo", e(cargo))
+
+    config.set("build", "vendor", e(True))
+
+    if not "targets" in locals():
+        targets = [d.getVar("TARGET_SYS", True)]
+    config.set("build", "target", e(targets))
+
+    if not "hosts" in locals():
+        hosts = [d.getVar("HOST_SYS", True)]
+    config.set("build", "host", e(hosts))
+
+    # We can't use BUILD_SYS since that is something the rust snapshot knows
+    # nothing about when trying to build some stage0 tools (like fabricate)
+    config.set("build", "build", e(d.getVar("SNAPSHOT_BUILD_SYS", True)))
+
+    # [install]
+    config.add_section("install")
+    # ./x.py install doesn't have any notion of "destdir"
+    # but we can prepend ${D} to all the directories instead
+    config.set("install", "prefix",  e(d.getVar("D", True) + d.getVar("prefix", True)))
+    config.set("install", "bindir",  e(d.getVar("D", True) + d.getVar("bindir", True)))
+    config.set("install", "libdir",  e(d.getVar("D", True) + d.getVar("libdir", True)))
+    config.set("install", "datadir", e(d.getVar("D", True) + d.getVar("datadir", True)))
+    config.set("install", "mandir",  e(d.getVar("D", True) + d.getVar("mandir", True)))
+
+    with open("config.toml", "w") as f:
+        f.write('changelog-seen = 2\n\n')
+        config.write(f)
+
+    # set up ${WORKDIR}/cargo_home
+    bb.build.exec_func("setup_cargo_environment", d)
+}
+
+
+rust_runx () {
+    echo "COMPILE ${PN}" "$@"
+
+    # CFLAGS, LDFLAGS, CXXFLAGS, CPPFLAGS are used by rust's build for a
+    # wide range of targets (not just TARGET). Yocto's settings for them will
+    # be inappropriate, avoid using.
+    unset CFLAGS
+    unset LDFLAGS
+    unset CXXFLAGS
+    unset CPPFLAGS
+
+    oe_cargo_fix_env
+
+    python3 src/bootstrap/bootstrap.py ${@oe.utils.parallel_make_argument(d, '-j %d')} "$@" --verbose
+}
+rust_runx[vardepsexclude] += "PARALLEL_MAKE"
+
+do_compile () {
+    rust_runx build
+}
+
+rust_do_install () {
+    mkdir -p ${D}${bindir}
+    cp build/${HOST_SYS}/stage2/bin/* ${D}${bindir}
+
+    mkdir -p ${D}${libdir}/rustlib
+    cp -pRd build/${HOST_SYS}/stage2/lib/* ${D}${libdir}
+    # Remove absolute symlink so bitbake doesn't complain
+    rm -f ${D}${libdir}/rustlib/src/rust
+}
+
+rust_install_targets() {
+    # Install our custom target.json files
+    local td="${D}${libdir}/rustlib/"
+    install -d "$td"
+    for tgt in "${WORKDIR}/targets/"* ; do
+        install -m 0644 "$tgt" "$td"
+    done
+}
+
+
+do_install () {
+    rust_do_install
+    rust_install_targets
+}
+# ex: sts=4 et sw=4 ts=8