arm-unknown-linux-gnueabihf was incorrectly used as llvm-target instead
of armv7-unknown-linux-gnueabihf when building for some Cortex A SoCs.
This may cause segfaults in non trivial rust applications on ARMv7
when e.g. +a7 is passed to LLVM. It seems to differ between different
versions of the compiler and LLVM versions.
d55cce6b8b6b510bf4905f19b949f7995af57a4d added a use of
BB_NUMBER_THREADS which is not whitelisted in Poky. This caused machines
with a different number of CPUs to have different sstate for
rust-native.
As a string this was actually being ignored. It mostly didn't matter
because max-atomic-width falls back to target-pointer-size, and they are
usually the same. However, at least on i586, 64-bit atomics are
supported with a 32-bit pointer size.
The whole point of rust-native is that it should be common for all
targets. If we reference TARGET variables during the build of
rust-native, then bitbake will build a different version for different
TARGETS.
ARM_INSTRUCTION_SET, and therefore ARM_THUMB_OPT also, expect to only be
used in conjunction with the thumb TUNE_FEATURES. So thumb-mode should only
be added if thumb is in TUNE_FEATURES and ARM_THUMB_OPT is thumb.
The commit https://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/meta/conf/machine/include/arm/arch-armv7a.inc?id=3e7d26e31a724009e69788460737e07163a14051
caused armv7a.inc to set ARM_INSTRUCTION_SET to thumb and the commit
message explicitly states that the change should have no effect unless
TUNE_FEATURES also includes thumb. This change to rust will allow that
assumption to continue to be true.
Further changes needed for musl to work.
env needs to be set to "musl" for unwinding work properly.
Also the llvm target should end with "-musl" and not "-gnu".
Put rust-llvm into a directory of it's own. This avoids conflicts
between the official llvm and rusts temporary one. It solves
interoperability issues with meta-clang.
Use /usr/lib/llvm-rust/ as prefix because that matches what llvm does
themselves on debian and ubuntu.
Support for mips32 big (mips) and little endian (mipsel) for mips32
and mips32r2 cpus. The big endian target can be verified with the
qemumips machine.
The "target_c_int_width field is added to librustc_back since rust
1.22.0 because not all rust targets (e.g. msp430-none-elf, avr)
have 32-bit int types any more.
Switch the build process to using Rust's new build system called
rustbuild. At the same time stop using jemalloc on all platforms and
switch to the system allocator since that was simplier to do.
The path to the rust source changes from 1.15 so preemptively make
changes to prepare for that.
Signed-off-by: Derek Straka <derek@asterius.io>
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Redid how compiler-rt is built by using the Rust makefiles to build it
instead of compiler-rt's build system. Rust itself deviated from using
compiler-rt's build system and provided their own rules requiring the
source tree to be configured to use them.
Since we no longer use shared source we can modify the source directory
as we build. This drops another patch we need to build and simplifies
the addition of Rust 1.12.1 in #97.
I'm honestly not sure what this patch does since everything appears to
build the same with and without it. I did a `tree` of the sysroots and
images and I don't see any file differences. Something like this used to
be necessary in Gentoo but I dropped it a few releases back.
This drops the ability to supply your own rust through the PACKAGECONFIG
local-rust option. This isn't tested and we really need to better expand
support for build arches. At the same time this simplifies how the rust
stage0 snapshot is extracted and used by the build system.
This whitespace in here causes rust to not be happy with the features
and throw warnings about a feature such as ' +sse3' being unsupported
when '+sse3' works just fine. Amazingly will cause rustc to abort when
you try to resolve the features to valid configs with the `--print` arg
to rustc.
The data layout changed for Rust 1.10. I noticed this because I got a
crash when using rust-native to build rust. The assertion that hit was
saying data layout mismatch and caused me to check the values in the
Rust sources.
Convert rust to not use the shared source setup and instead use its own
extracted directory. Include the version info in the bitbake file so
that in the future we can support multiple versions via a
PREFERRED_VERSIONS variable.
Khem Raj
Johan Anderholm
Steven Walter
Martin Jansa
Tyler Hall
Alistair Francis
Zubair Lutfullah Kakakhel
Alistair Francis
Dan Dedrick
Adam Schwalm
Doug Goldstein
Derek Straka
Cody P Schafer