1python do_rust_gen_targets () { 2 wd = d.getVar('WORKDIR') + '/targets/' 3 # It is important 'TARGET' is last here so that it overrides our less 4 # informed choices for BUILD & HOST if TARGET happens to be the same as 5 # either of them. 6 for thing in ['BUILD', 'HOST', 'TARGET']: 7 bb.debug(1, "rust_gen_target for " + thing) 8 features = "" 9 cpu = "generic" 10 arch = d.getVar('{}_ARCH'.format(thing)) 11 abi = "" 12 if thing is "TARGET": 13 abi = d.getVar('ABIEXTENSION') 14 # arm and armv7 have different targets in llvm 15 if arch == "arm" and target_is_armv7(d): 16 arch = 'armv7' 17 features = d.getVar('TARGET_LLVM_FEATURES') or "" 18 cpu = d.getVar('TARGET_LLVM_CPU') 19 rust_gen_target(d, thing, wd, features, cpu, arch, abi) 20} 21 22# Otherwise we'll depend on what we provide 23INHIBIT_DEFAULT_RUST_DEPS = "1" 24 25# Unlike native (which nicely maps it's DEPENDS) cross wipes them out completely. 26# Generally, we (and cross in general) need the same things that native needs, 27# so it might make sense to take it's mapping. For now, though, we just mention 28# the bits we need explicitly. 29DEPENDS += "rust-llvm-native" 30DEPENDS += "rust-native" 31 32# In the cross compilation case, rustc doesn't seem to get the rpath quite 33# right. It manages to include '../../lib/${TARGET_PREFIX}', but doesn't 34# include the '../../lib' (ie: relative path from cross_bindir to normal 35# libdir. As a result, we end up not being able to properly reference files in normal ${libdir}. 36# Most of the time this happens to work fine as the systems libraries are 37# subsituted, but sometimes a host system will lack a library, or the right 38# version of a library (libtinfo was how I noticed this). 39# 40# FIXME: this should really be fixed in rust itself. 41# FIXME: using hard-coded relative paths is wrong, we should ask bitbake for 42# the relative path between 2 of it's vars. 43HOST_POST_LINK_ARGS:append = " -Wl,-rpath=../../lib" 44BUILD_POST_LINK_ARGS:append = " -Wl,-rpath=../../lib" 45 46# We need the same thing for the calls to the compiler when building the runtime crap 47TARGET_CC_ARCH:append = " --sysroot=${STAGING_DIR_TARGET}" 48 49do_rust_setup_snapshot () { 50} 51 52do_configure () { 53} 54 55do_compile () { 56} 57 58do_install () { 59 mkdir -p ${D}${prefix}/${base_libdir_native}/rustlib 60 cp ${WORKDIR}/targets/${TARGET_SYS}.json ${D}${prefix}/${base_libdir_native}/rustlib 61} 62 63rust_cross_sysroot_preprocess() { 64 sysroot_stage_dir ${D}${prefix}/${base_libdir_native}/rustlib ${SYSROOT_DESTDIR}${prefix}/${base_libdir_native}/rustlib 65} 66SYSROOT_PREPROCESS_FUNCS += "rust_cross_sysroot_preprocess" 67