diff options
Diffstat (limited to 'meta/classes/rust-bin.bbclass')
| -rw-r--r-- | meta/classes/rust-bin.bbclass | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/meta/classes/rust-bin.bbclass b/meta/classes/rust-bin.bbclass new file mode 100644 index 0000000000..c87343b3cf --- /dev/null +++ b/meta/classes/rust-bin.bbclass @@ -0,0 +1,149 @@ +inherit rust + +RDEPENDS:${PN}:append:class-target = " ${RUSTLIB_DEP}" + +RUSTC_ARCHFLAGS += "-C opt-level=3 -g -L ${STAGING_DIR_HOST}/${rustlibdir} -C linker=${RUST_TARGET_CCLD}" +EXTRA_OEMAKE += 'RUSTC_ARCHFLAGS="${RUSTC_ARCHFLAGS}"' + +# Some libraries alias with the standard library but libstd is configured to +# make it difficult or imposisble to use its version. Unfortunately libstd +# must be explicitly overridden using extern. +OVERLAP_LIBS = "\ + libc \ + log \ + getopts \ + rand \ +" +def get_overlap_deps(d): + deps = d.getVar("DEPENDS").split() + overlap_deps = [] + for o in d.getVar("OVERLAP_LIBS").split(): + l = len([o for dep in deps if (o + '-rs' in dep)]) + if l > 0: + overlap_deps.append(o) + return " ".join(overlap_deps) +OVERLAP_DEPS = "${@get_overlap_deps(d)}" + +# Prevents multiple static copies of standard library modules +# See https://github.com/rust-lang/rust/issues/19680 +RUSTC_PREFER_DYNAMIC = "-C prefer-dynamic" +RUSTC_FLAGS += "${RUSTC_PREFER_DYNAMIC}" + +CRATE_NAME ?= "${@d.getVar('BPN').replace('-rs', '').replace('-', '_')}" +BINNAME ?= "${BPN}" +LIBNAME ?= "lib${CRATE_NAME}-rs" +CRATE_TYPE ?= "dylib" +BIN_SRC ?= "${S}/src/main.rs" +LIB_SRC ?= "${S}/src/lib.rs" + +rustbindest ?= "${bindir}" +rustlibdest ?= "${rustlibdir}" +RUST_RPATH_ABS ?= "${rustlibdir}:${rustlib}" + +def relative_rpaths(paths, base): + relpaths = set() + for p in paths.split(':'): + if p == base: + relpaths.add('$ORIGIN') + continue + relpaths.add(os.path.join('$ORIGIN', os.path.relpath(p, base))) + return '-rpath=' + ':'.join(relpaths) if len(relpaths) else '' + +RUST_LIB_RPATH_FLAGS ?= "${@relative_rpaths(d.getVar('RUST_RPATH_ABS', True), d.getVar('rustlibdest', True))}" +RUST_BIN_RPATH_FLAGS ?= "${@relative_rpaths(d.getVar('RUST_RPATH_ABS', True), d.getVar('rustbindest', True))}" + +def libfilename(d): + if d.getVar('CRATE_TYPE', True) == 'dylib': + return d.getVar('LIBNAME', True) + '.so' + else: + return d.getVar('LIBNAME', True) + '.rlib' + +def link_args(d, bin): + linkargs = [] + if bin: + rpaths = d.getVar('RUST_BIN_RPATH_FLAGS', False) + else: + rpaths = d.getVar('RUST_LIB_RPATH_FLAGS', False) + if d.getVar('CRATE_TYPE', True) == 'dylib': + linkargs.append('-soname') + linkargs.append(libfilename(d)) + if len(rpaths): + linkargs.append(rpaths) + if len(linkargs): + return ' '.join(['-Wl,' + arg for arg in linkargs]) + else: + return '' + +get_overlap_externs () { + externs= + for dep in ${OVERLAP_DEPS}; do + extern=$(ls ${STAGING_DIR_HOST}/${rustlibdir}/lib$dep-rs.{so,rlib} 2>/dev/null \ + | awk '{print $1}'); + if [ -n "$extern" ]; then + externs="$externs --extern $dep=$extern" + else + echo "$dep in depends but no such library found in ${rustlibdir}!" >&2 + exit 1 + fi + done + echo "$externs" +} + +do_configure () { +} + +oe_runrustc () { + export RUST_TARGET_PATH="${RUST_TARGET_PATH}" + bbnote ${RUSTC} ${RUSTC_ARCHFLAGS} ${RUSTC_FLAGS} "$@" + "${RUSTC}" ${RUSTC_ARCHFLAGS} ${RUSTC_FLAGS} "$@" +} + +oe_compile_rust_lib () { + rm -rf ${LIBNAME}.{rlib,so} + local -a link_args + if [ -n '${@link_args(d, False)}' ]; then + link_args[0]='-C' + link_args[1]='link-args=${@link_args(d, False)}' + fi + oe_runrustc $(get_overlap_externs) \ + "${link_args[@]}" \ + ${LIB_SRC} \ + -o ${@libfilename(d)} \ + --crate-name=${CRATE_NAME} --crate-type=${CRATE_TYPE} \ + "$@" +} +oe_compile_rust_lib[vardeps] += "get_overlap_externs" + +oe_compile_rust_bin () { + rm -rf ${BINNAME} + local -a link_args + if [ -n '${@link_args(d, True)}' ]; then + link_args[0]='-C' + link_args[1]='link-args=${@link_args(d, True)}' + fi + oe_runrustc $(get_overlap_externs) \ + "${link_args[@]}" \ + ${BIN_SRC} -o ${BINNAME} "$@" +} +oe_compile_rust_bin[vardeps] += "get_overlap_externs" + +oe_install_rust_lib () { + for lib in $(ls ${LIBNAME}.{so,rlib} 2>/dev/null); do + echo Installing $lib + install -D -m 755 $lib ${D}/${rustlibdest}/$lib + done +} + +oe_install_rust_bin () { + echo Installing ${BINNAME} + install -D -m 755 ${BINNAME} ${D}/${rustbindest}/${BINNAME} +} + +do_rust_bin_fixups() { + for f in `find ${PKGD} -name '*.so*'`; do + echo "Strip rust note: $f" + ${OBJCOPY} -R .note.rustc $f $f + done +} +PACKAGE_PREPROCESS_FUNCS += "do_rust_bin_fixups" + |