1f18869377
The -C crate_hash option does not work if multiple versions of the same crate are being linked into a binary. This can happen if different dependencies depend on different versions of the same crate. The -C crate_hash argument causes all versions of a given crate to have the same crate hash which in turn causes the compiler to select the wrong one internally and crash. This works around issue #126 for Cargo builds but does not fix the underlying cause.
117 lines
3.9 KiB
Plaintext
117 lines
3.9 KiB
Plaintext
# Common variables used by all Rust builds
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export rustlibdir = "${libdir}/rust"
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FILES_${PN} += "${rustlibdir}/*.so"
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FILES_${PN}-dev += "${rustlibdir}/*.rlib"
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FILES_${PN}-dbg += "${rustlibdir}/.debug"
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RUSTLIB = "-L ${STAGING_LIBDIR}/rust"
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RUSTFLAGS += "-C rpath ${RUSTLIB}"
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RUSTLIB_DEP ?= "libstd-rs"
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# Responsible for taking Yocto triples and converting it to Rust triples
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def rust_base_triple(d, thing):
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'''
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Mangle bitbake's *_SYS into something that rust might support (see
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rust/mk/cfg/* for a list)
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Note that os is assumed to be some linux form
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'''
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arch = d.getVar('{}_ARCH'.format(thing), True)
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# All the Yocto targets are Linux and are 'unknown'
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vendor = "-unknown"
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os = d.getVar('{}_OS'.format(thing), True)
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libc = d.getVar('TCLIBC', True)
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# Prefix with a dash and convert glibc -> gnu
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if libc == "glibc":
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libc = "-gnu"
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elif libc == "musl":
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libc = "-musl"
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# Don't double up musl (only appears to be the case on aarch64)
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if os == "linux-musl":
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if libc != "-musl":
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bb.fatal("{}_OS was '{}' but TCLIBC was not 'musl'".format(thing, os))
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os = "linux"
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# This catches ARM targets and appends the necessary hard float bits
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if os == "linux-gnueabi" or os == "linux-musleabi":
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libc = bb.utils.contains('TUNE_FEATURES', 'callconvention-hard', 'hf', '', d)
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return arch + vendor + '-' + os + libc
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# Naming explanation
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# Yocto
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# - BUILD_SYS - Yocto triple of the build environment
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# - HOST_SYS - What we're building for in Yocto
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# - TARGET_SYS - What we're building for in Yocto
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#
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# So when building '-native' packages BUILD_SYS == HOST_SYS == TARGET_SYS
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# When building packages for the image HOST_SYS == TARGET_SYS
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# This is a gross over simplification as there are other modes but
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# currently this is all that's supported.
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#
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# Rust
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# - TARGET - the system where the binary will run
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# - HOST - the system where the binary is being built
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#
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# Rust additionally will use two additional cases:
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# - undecorated (e.g. CC) - equivalent to TARGET
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# - triple suffix (e.g. CC_x86_64_unknown_linux_gnu) - both
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# see: https://github.com/alexcrichton/gcc-rs
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# The way that Rust's internal triples and Yocto triples are mapped together
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# its likely best to not use the triple suffix due to potential confusion.
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RUST_BUILD_SYS = "${@rust_base_triple(d, 'BUILD')}"
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RUST_HOST_SYS = "${@rust_base_triple(d, 'HOST')}"
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RUST_TARGET_SYS = "${@rust_base_triple(d, 'TARGET')}"
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# wrappers to get around the fact that Rust needs a single
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# binary but Yocto's compiler and linker commands have
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# arguments. Technically the archiver is always one command but
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# this is necessary for builds that determine the prefix and then
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# use those commands based on the prefix.
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WRAPPER_DIR = "${WORKDIR}/wrapper"
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RUST_BUILD_CC = "${WRAPPER_DIR}/build-rust-cc"
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RUST_BUILD_CCLD = "${WRAPPER_DIR}/build-rust-ccld"
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RUST_BUILD_AR = "${WRAPPER_DIR}/build-rust-ar"
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RUST_TARGET_CC = "${WRAPPER_DIR}/target-rust-cc"
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RUST_TARGET_CCLD = "${WRAPPER_DIR}/target-rust-ccld"
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RUST_TARGET_AR = "${WRAPPER_DIR}/target-rust-ar"
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create_wrapper () {
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file="$1"
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shift
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cat <<- EOF > "${file}"
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#!/bin/sh
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$@ "\$@"
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EOF
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chmod +x "${file}"
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}
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# compiler is used by gcc-rs
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# linker is used by rustc/cargo
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# archiver is used by the build of libstd-rs
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do_rust_create_wrappers () {
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mkdir -p "${WRAPPER_DIR}"
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# Yocto Build / Rust Host compiler
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create_wrapper "${RUST_BUILD_CC}" "${BUILD_CC}"
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# Yocto Build / Rust Host linker
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create_wrapper "${RUST_BUILD_CCLD}" "${BUILD_CCLD}" "${BUILD_LDFLAGS}"
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# Yocto Build / Rust Host archiver
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create_wrapper "${RUST_BUILD_AR}" "${BUILD_AR}"
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# Yocto Target / Rust Target compiler
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create_wrapper "${RUST_TARGET_CC}" "${CC}"
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# Yocto Target / Rust Target linker
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create_wrapper "${RUST_TARGET_CCLD}" "${CCLD}" "${LDFLAGS}"
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# Yocto Target / Rust Target archiver
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create_wrapper "${RUST_TARGET_AR}" "${AR}"
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}
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addtask rust_create_wrappers before do_configure after do_patch
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do_rust_create_wrappers[dirs] += "${WRAPPER_DIR}"
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