| inherit python3native |
| |
| # Common variables used by all Rust builds |
| export rustlibdir = "${libdir}/rust" |
| FILES:${PN} += "${rustlibdir}/*.so" |
| FILES:${PN}-dev += "${rustlibdir}/*.rlib ${rustlibdir}/*.rmeta" |
| FILES:${PN}-dbg += "${rustlibdir}/.debug" |
| |
| RUSTLIB = "-L ${STAGING_LIBDIR}/rust" |
| RUST_DEBUG_REMAP = "--remap-path-prefix=${WORKDIR}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR}" |
| RUSTFLAGS += "${RUSTLIB} ${RUST_DEBUG_REMAP}" |
| RUSTLIB_DEP ?= "libstd-rs" |
| export RUST_TARGET_PATH = "${STAGING_LIBDIR_NATIVE}/rustlib" |
| RUST_PANIC_STRATEGY ?= "unwind" |
| |
| # Native builds are not effected by TCLIBC. Without this, rust-native |
| # thinks it's "target" (i.e. x86_64-linux) is a musl target. |
| RUST_LIBC = "${TCLIBC}" |
| RUST_LIBC:class-native = "glibc" |
| |
| def determine_libc(d, thing): |
| '''Determine which libc something should target''' |
| |
| # BUILD is never musl, TARGET may be musl or glibc, |
| # HOST could be musl, but only if a compiler is built to be run on |
| # target in which case HOST_SYS != BUILD_SYS. |
| if thing == 'TARGET': |
| libc = d.getVar('RUST_LIBC') |
| elif thing == 'BUILD' and (d.getVar('HOST_SYS') != d.getVar('BUILD_SYS')): |
| libc = d.getVar('RUST_LIBC') |
| else: |
| libc = d.getVar('RUST_LIBC:class-native') |
| |
| return libc |
| |
| def target_is_armv7(d): |
| '''Determine if target is armv7''' |
| # TUNE_FEATURES may include arm* even if the target is not arm |
| # in the case of *-native packages |
| if d.getVar('TARGET_ARCH') != 'arm': |
| return False |
| |
| feat = d.getVar('TUNE_FEATURES') |
| feat = frozenset(feat.split()) |
| mach_overrides = d.getVar('MACHINEOVERRIDES') |
| mach_overrides = frozenset(mach_overrides.split(':')) |
| |
| v7=frozenset(['armv7a', 'armv7r', 'armv7m', 'armv7ve']) |
| if mach_overrides.isdisjoint(v7) and feat.isdisjoint(v7): |
| return False |
| else: |
| return True |
| target_is_armv7[vardepvalue] = "${@target_is_armv7(d)}" |
| |
| # Responsible for taking Yocto triples and converting it to Rust triples |
| def rust_base_triple(d, thing): |
| ''' |
| Mangle bitbake's *_SYS into something that rust might support (see |
| rust/mk/cfg/* for a list) |
| |
| Note that os is assumed to be some linux form |
| ''' |
| |
| # The llvm-target for armv7 is armv7-unknown-linux-gnueabihf |
| if thing == "TARGET" and target_is_armv7(d): |
| arch = "armv7" |
| else: |
| arch = oe.rust.arch_to_rust_arch(d.getVar('{}_ARCH'.format(thing))) |
| |
| # All the Yocto targets are Linux and are 'unknown' |
| vendor = "-unknown" |
| os = d.getVar('{}_OS'.format(thing)) |
| libc = determine_libc(d, thing) |
| |
| # Prefix with a dash and convert glibc -> gnu |
| if libc == "glibc": |
| libc = "-gnu" |
| elif libc == "musl": |
| libc = "-musl" |
| |
| # Don't double up musl (only appears to be the case on aarch64) |
| if os == "linux-musl": |
| if libc != "-musl": |
| bb.fatal("{}_OS was '{}' but TCLIBC was not 'musl'".format(thing, os)) |
| os = "linux" |
| |
| # This catches ARM targets and appends the necessary hard float bits |
| if os == "linux-gnueabi" or os == "linux-musleabi": |
| libc = bb.utils.contains('TUNE_FEATURES', 'callconvention-hard', 'hf', '', d) |
| return arch + vendor + '-' + os + libc |
| |
| # Naming explanation |
| # Yocto |
| # - BUILD_SYS - Yocto triple of the build environment |
| # - HOST_SYS - What we're building for in Yocto |
| # - TARGET_SYS - What we're building for in Yocto |
| # |
| # So when building '-native' packages BUILD_SYS == HOST_SYS == TARGET_SYS |
| # When building packages for the image HOST_SYS == TARGET_SYS |
| # This is a gross over simplification as there are other modes but |
| # currently this is all that's supported. |
| # |
| # Rust |
| # - TARGET - the system where the binary will run |
| # - HOST - the system where the binary is being built |
| # |
| # Rust additionally will use two additional cases: |
| # - undecorated (e.g. CC) - equivalent to TARGET |
| # - triple suffix (e.g. CC:x86_64_unknown_linux_gnu) - both |
| # see: https://github.com/alexcrichton/gcc-rs |
| # The way that Rust's internal triples and Yocto triples are mapped together |
| # its likely best to not use the triple suffix due to potential confusion. |
| |
| RUST_BUILD_SYS = "${@rust_base_triple(d, 'BUILD')}" |
| RUST_HOST_SYS = "${@rust_base_triple(d, 'HOST')}" |
| RUST_TARGET_SYS = "${@rust_base_triple(d, 'TARGET')}" |
| |
| # wrappers to get around the fact that Rust needs a single |
| # binary but Yocto's compiler and linker commands have |
| # arguments. Technically the archiver is always one command but |
| # this is necessary for builds that determine the prefix and then |
| # use those commands based on the prefix. |
| WRAPPER_DIR = "${WORKDIR}/wrapper" |
| RUST_BUILD_CC = "${WRAPPER_DIR}/build-rust-cc" |
| RUST_BUILD_CXX = "${WRAPPER_DIR}/build-rust-cxx" |
| RUST_BUILD_CCLD = "${WRAPPER_DIR}/build-rust-ccld" |
| RUST_BUILD_AR = "${WRAPPER_DIR}/build-rust-ar" |
| RUST_TARGET_CC = "${WRAPPER_DIR}/target-rust-cc" |
| RUST_TARGET_CXX = "${WRAPPER_DIR}/target-rust-cxx" |
| RUST_TARGET_CCLD = "${WRAPPER_DIR}/target-rust-ccld" |
| RUST_TARGET_AR = "${WRAPPER_DIR}/target-rust-ar" |
| |
| create_wrapper () { |
| file="$1" |
| shift |
| |
| cat <<- EOF > "${file}" |
| #!/usr/bin/env python3 |
| import os, sys |
| orig_binary = "$@" |
| binary = orig_binary.split()[0] |
| args = orig_binary.split() + sys.argv[1:] |
| os.execvp(binary, args) |
| EOF |
| chmod +x "${file}" |
| } |
| |
| export WRAPPER_TARGET_CC = "${CC}" |
| export WRAPPER_TARGET_CXX = "${CXX}" |
| export WRAPPER_TARGET_CCLD = "${CCLD}" |
| export WRAPPER_TARGET_LDFLAGS = "${LDFLAGS}" |
| export WRAPPER_TARGET_AR = "${AR}" |
| |
| # compiler is used by gcc-rs |
| # linker is used by rustc/cargo |
| # archiver is used by the build of libstd-rs |
| do_rust_create_wrappers () { |
| mkdir -p "${WRAPPER_DIR}" |
| |
| # Yocto Build / Rust Host C compiler |
| create_wrapper "${RUST_BUILD_CC}" "${BUILD_CC}" |
| # Yocto Build / Rust Host C++ compiler |
| create_wrapper "${RUST_BUILD_CXX}" "${BUILD_CXX}" |
| # Yocto Build / Rust Host linker |
| create_wrapper "${RUST_BUILD_CCLD}" "${BUILD_CCLD}" "${BUILD_LDFLAGS}" |
| # Yocto Build / Rust Host archiver |
| create_wrapper "${RUST_BUILD_AR}" "${BUILD_AR}" |
| |
| # Yocto Target / Rust Target C compiler |
| create_wrapper "${RUST_TARGET_CC}" "${WRAPPER_TARGET_CC}" "${WRAPPER_TARGET_LDFLAGS}" |
| # Yocto Target / Rust Target C++ compiler |
| create_wrapper "${RUST_TARGET_CXX}" "${WRAPPER_TARGET_CXX}" |
| # Yocto Target / Rust Target linker |
| create_wrapper "${RUST_TARGET_CCLD}" "${WRAPPER_TARGET_CCLD}" "${WRAPPER_TARGET_LDFLAGS}" |
| # Yocto Target / Rust Target archiver |
| create_wrapper "${RUST_TARGET_AR}" "${WRAPPER_TARGET_AR}" |
| |
| } |
| |
| addtask rust_create_wrappers before do_configure after do_patch do_prepare_recipe_sysroot |
| do_rust_create_wrappers[dirs] += "${WRAPPER_DIR}" |