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authorMichael Olbrich <m.olbrich@pengutronix.de>2019-06-05 20:07:39 +0200
committerMichael Olbrich <m.olbrich@pengutronix.de>2021-07-05 11:09:01 +0200
commit8194d3cdc1171ba756cfb94df6ee43ea955048c9 (patch)
treebac68fe17f14e1ba83b552a9db16339cd0d786a1
parentdfc294f9c5dee521d8eb5728ce5f30424017c0b8 (diff)
downloadOSELAS.Toolchain-8194d3cdc1171ba756cfb94df6ee43ea955048c9.tar.gz
OSELAS.Toolchain-8194d3cdc1171ba756cfb94df6ee43ea955048c9.tar.xz
cross-rustc: new package
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
-rw-r--r--config/Kconfig1
-rw-r--r--config/rustc.toml704
-rw-r--r--patches/rustc-1.35.0/0001-bootstrap-don-t-try-to-canonicalize-the-prefix.patch27
-rw-r--r--patches/rustc-1.35.0/series4
-rw-r--r--rules/cross-rustc.in50
-rw-r--r--rules/cross-rustc.make125
6 files changed, 911 insertions, 0 deletions
diff --git a/config/Kconfig b/config/Kconfig
index 41fb921..163cea4 100644
--- a/config/Kconfig
+++ b/config/Kconfig
@@ -72,6 +72,7 @@ source "workspace/rules/cross-gcc.in"
source "workspace/rules/cross-llvm.in"
source "workspace/rules/cross-clang.in"
source "workspace/rules/cross-lld.in"
+source "workspace/rules/cross-rustc.in"
source "workspace/rules/cross-gdb.in"
source "workspace/rules/cross-toolchain.in"
source "workspace/rules/host-fake-makeinfo.in"
diff --git a/config/rustc.toml b/config/rustc.toml
new file mode 100644
index 0000000..1c4b44f
--- /dev/null
+++ b/config/rustc.toml
@@ -0,0 +1,704 @@
+# Sample TOML configuration file for building Rust.
+#
+# To configure rustbuild, copy this file to the directory from which you will be
+# running the build, and name it config.toml.
+#
+# All options are commented out by default in this file, and they're commented
+# out with their default values. The build system by default looks for
+# `config.toml` in the current directory of a build for build configuration, but
+# a custom configuration file can also be specified with `--config` to the build
+# system.
+
+# Keeps track of the last version of `x.py` used.
+# If it does not match the version that is currently running,
+# `x.py` will prompt you to update it and read the changelog.
+# See `src/bootstrap/CHANGELOG.md` for more information.
+changelog-seen = 2
+
+# =============================================================================
+# Global Settings
+# =============================================================================
+
+# Use different pre-set defaults than the global defaults.
+#
+# See `src/bootstrap/defaults` for more information.
+# Note that this has no default value (x.py uses the defaults in `config.toml.example`).
+#profile = <none>
+
+# =============================================================================
+# Tweaking how LLVM is compiled
+# =============================================================================
+[llvm]
+
+# Whether to use Rust CI built LLVM instead of locally building it.
+#
+# Unless you're developing for a target where Rust CI doesn't build a compiler
+# toolchain or changing LLVM locally, you probably want to set this to true.
+#
+# This is false by default so that distributions don't unexpectedly download
+# LLVM from the internet.
+#
+# All tier 1 targets are currently supported; set this to `"if-supported"` if
+# you are not sure whether you're on a tier 1 target.
+#
+# We also currently only support this when building LLVM for the build triple.
+#
+# Note that many of the LLVM options are not currently supported for
+# downloading. Currently only the "assertions" option can be toggled.
+#download-ci-llvm = false
+
+# Indicates whether LLVM rebuild should be skipped when running bootstrap. If
+# this is `false` then the compiler's LLVM will be rebuilt whenever the built
+# version doesn't have the correct hash. If it is `true` then LLVM will never
+# be rebuilt. The default value is `false`.
+#skip-rebuild = false
+
+# Indicates whether the LLVM build is a Release or Debug build
+#optimize = true
+
+# Indicates whether LLVM should be built with ThinLTO. Note that this will
+# only succeed if you use clang, lld, llvm-ar, and llvm-ranlib in your C/C++
+# toolchain (see the `cc`, `cxx`, `linker`, `ar`, and `ranlib` options below).
+# More info at: https://clang.llvm.org/docs/ThinLTO.html#clang-bootstrap
+#thin-lto = false
+
+# Indicates whether an LLVM Release build should include debug info
+#release-debuginfo = false
+
+# Indicates whether the LLVM assertions are enabled or not
+#assertions = false
+
+# Indicates whether ccache is used when building LLVM
+#ccache = false
+# or alternatively ...
+#ccache = "/path/to/ccache"
+
+# If an external LLVM root is specified, we automatically check the version by
+# default to make sure it's within the range that we're expecting, but setting
+# this flag will indicate that this version check should not be done.
+#version-check = true
+
+# Link libstdc++ statically into the rustc_llvm instead of relying on a
+# dynamic version to be available.
+#static-libstdcpp = false
+
+# Whether to use Ninja to build LLVM. This runs much faster than make.
+#ninja = true
+
+# LLVM targets to build support for.
+# Note: this is NOT related to Rust compilation targets. However, as Rust is
+# dependent on LLVM for code generation, turning targets off here WILL lead to
+# the resulting rustc being unable to compile for the disabled architectures.
+# Also worth pointing out is that, in case support for new targets are added to
+# LLVM, enabling them here doesn't mean Rust is automatically gaining said
+# support. You'll need to write a target specification at least, and most
+# likely, teach rustc about the C ABI of the target. Get in touch with the
+# Rust team and file an issue if you need assistance in porting!
+#targets = "AArch64;ARM;Hexagon;MSP430;Mips;NVPTX;PowerPC;RISCV;Sparc;SystemZ;WebAssembly;X86"
+
+# LLVM experimental targets to build support for. These targets are specified in
+# the same format as above, but since these targets are experimental, they are
+# not built by default and the experimental Rust compilation targets that depend
+# on them will not work unless the user opts in to building them.
+#experimental-targets = "AVR"
+
+# Cap the number of parallel linker invocations when compiling LLVM.
+# This can be useful when building LLVM with debug info, which significantly
+# increases the size of binaries and consequently the memory required by
+# each linker process.
+# If absent or 0, linker invocations are treated like any other job and
+# controlled by rustbuild's -j parameter.
+#link-jobs = 0
+
+# When invoking `llvm-config` this configures whether the `--shared` argument is
+# passed to prefer linking to shared libraries.
+#link-shared = false
+
+# When building llvm, this configures what is being appended to the version.
+# The default is "-rust-$version-$channel", except for dev channel where rustc
+# version number is omitted. To use LLVM version as is, provide an empty string.
+#version-suffix = "-rust-dev"
+
+# On MSVC you can compile LLVM with clang-cl, but the test suite doesn't pass
+# with clang-cl, so this is special in that it only compiles LLVM with clang-cl
+#clang-cl = '/path/to/clang-cl.exe'
+
+# Pass extra compiler and linker flags to the LLVM CMake build.
+#cflags = "-fextra-flag"
+#cxxflags = "-fextra-flag"
+#ldflags = "-Wl,extra-flag"
+
+# Use libc++ when building LLVM instead of libstdc++. This is the default on
+# platforms already use libc++ as the default C++ library, but this option
+# allows you to use libc++ even on platforms when it's not. You need to ensure
+# that your host compiler ships with libc++.
+#use-libcxx = true
+
+# The value specified here will be passed as `-DLLVM_USE_LINKER` to CMake.
+#use-linker = "lld"
+
+# Whether or not to specify `-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=YES`
+#allow-old-toolchain = false
+
+# Whether to include the Polly optimizer.
+#polly = false
+
+# =============================================================================
+# General build configuration options
+# =============================================================================
+[build]
+# The default stage to use for the `doc` subcommand
+#doc-stage = 0
+
+# The default stage to use for the `build` subcommand
+#build-stage = 1
+
+# The default stage to use for the `test` subcommand
+#test-stage = 1
+
+# The default stage to use for the `dist` subcommand
+#dist-stage = 2
+
+# The default stage to use for the `install` subcommand
+#install-stage = 2
+
+# The default stage to use for the `bench` subcommand
+#bench-stage = 2
+
+# Build triple for the original snapshot compiler. This must be a compiler that
+# nightlies are already produced for. The current platform must be able to run
+# binaries of this build triple and the nightly will be used to bootstrap the
+# first compiler.
+#
+# Defaults to host platform
+build = "@BUILD_TRIPLE@"
+
+# Which triples to produce a compiler toolchain for. Each of these triples will
+# be bootstrapped from the build triple themselves.
+#
+# Defaults to just the build triple
+host = ["@BUILD_TRIPLE@"]
+
+# Which triples to build libraries (core/alloc/std/test/proc_macro) for. Each of
+# these triples will be bootstrapped from the build triple themselves.
+#
+# Defaults to `host`. If you set this explicitly, you likely want to add all
+# host triples to this list as well in order for those host toolchains to be
+# able to compile programs for their native target.
+target = ["@BUILD_TRIPLE@", "@TARGET_TRIPLE@"]
+
+# Use this directory to store build artifacts.
+# You can use "$ROOT" to indicate the root of the git repository.
+#build-dir = "build"
+
+# Instead of downloading the src/stage0.txt version of Cargo specified, use
+# this Cargo binary instead to build all Rust code
+#cargo = "/path/to/bin/cargo"
+
+# Instead of downloading the src/stage0.txt version of the compiler
+# specified, use this rustc binary instead as the stage0 snapshot compiler.
+#rustc = "/path/to/bin/rustc"
+
+# Instead of download the src/stage0.txt version of rustfmt specified,
+# use this rustfmt binary instead as the stage0 snapshot rustfmt.
+#rustfmt = "/path/to/bin/rustfmt"
+
+# Flag to specify whether any documentation is built. If false, rustdoc and
+# friends will still be compiled but they will not be used to generate any
+# documentation.
+docs = false
+
+# Flag to specify whether CSS, JavaScript, and HTML are minified when
+# docs are generated. JSON is always minified, because it's enormous,
+# and generated in already-minified form from the beginning.
+#docs-minification = true
+
+# Indicate whether the compiler should be documented in addition to the standard
+# library and facade crates.
+#compiler-docs = false
+
+# Indicate whether git submodules are managed and updated automatically.
+submodules = false
+
+# Update git submodules only when the checked out commit in the submodules differs
+# from what is committed in the main rustc repo.
+#fast-submodules = true
+
+# The path to (or name of) the GDB executable to use. This is only used for
+# executing the debuginfo test suite.
+#gdb = "gdb"
+
+# The node.js executable to use. Note that this is only used for the emscripten
+# target when running tests, otherwise this can be omitted.
+#nodejs = "node"
+
+# Python interpreter to use for various tasks throughout the build, notably
+# rustdoc tests, the lldb python interpreter, and some dist bits and pieces.
+#
+# Defaults to the Python interpreter used to execute x.py
+#python = "python"
+
+# Force Cargo to check that Cargo.lock describes the precise dependency
+# set that all the Cargo.toml files create, instead of updating it.
+locked-deps = true
+
+# Indicate whether the vendored sources are used for Rust dependencies or not
+vendor = true
+
+# Typically the build system will build the Rust compiler twice. The second
+# compiler, however, will simply use its own libraries to link against. If you
+# would rather to perform a full bootstrap, compiling the compiler three times,
+# then you can set this option to true. You shouldn't ever need to set this
+# option to true.
+#full-bootstrap = false
+
+# Enable a build of the extended Rust tool set which is not only the compiler
+# but also tools such as Cargo. This will also produce "combined installers"
+# which are used to install Rust and Cargo together. This is disabled by
+# default. The `tools` option (immediately below) specifies which tools should
+# be built if `extended = true`.
+extended = true
+
+# Installs chosen set of extended tools if `extended = true`. By default builds all.
+# If chosen tool failed to build the installation fails. If `extended = false`, this
+# option is ignored.
+tools = ["cargo"]
+
+# Verbosity level: 0 == not verbose, 1 == verbose, 2 == very verbose
+verbose = 1
+
+# Build the sanitizer runtimes
+#sanitizers = false
+
+# Build the profiler runtime (required when compiling with options that depend
+# on this runtime, such as `-C profile-generate` or `-Z instrument-coverage`).
+#profiler = false
+
+# Indicates whether the native libraries linked into Cargo will be statically
+# linked or not.
+#cargo-native-static = false
+
+# Run the build with low priority, by setting the process group's "nice" value
+# to +10 on Unix platforms, and by using a "low priority" job object on Windows.
+#low-priority = false
+
+# Arguments passed to the `./configure` script, used during distcheck. You
+# probably won't fill this in but rather it's filled in by the `./configure`
+# script.
+#configure-args = []
+
+# Indicates that a local rebuild is occurring instead of a full bootstrap,
+# essentially skipping stage0 as the local compiler is recompiling itself again.
+#local-rebuild = false
+
+# Print out how long each rustbuild step took (mostly intended for CI and
+# tracking over time)
+#print-step-timings = false
+
+# Print out resource usage data for each rustbuild step, as defined by the Unix
+# struct rusage. (Note that this setting is completely unstable: the data it
+# captures, what platforms it supports, the format of its associated output, and
+# this setting's very existence, are all subject to change.)
+#print-step-rusage = false
+
+# =============================================================================
+# General install configuration options
+# =============================================================================
+[install]
+
+# Instead of installing to /usr/local, install to this path instead.
+prefix = "@PREFIX@"
+
+# Where to install system configuration files
+# If this is a relative path, it will get installed in `prefix` above
+## only used for bash completion, keep it inside the prefix
+sysconfdir = "etc"
+
+# Where to install documentation in `prefix` above
+#docdir = "share/doc/rust"
+
+# Where to install binaries in `prefix` above
+#bindir = "bin"
+
+# Where to install libraries in `prefix` above
+#libdir = "lib"
+
+# Where to install man pages in `prefix` above
+#mandir = "share/man"
+
+# Where to install data in `prefix` above (currently unused)
+#datadir = "share"
+
+# Where to install additional info in `prefix` above (currently unused)
+#infodir = "share/info"
+
+# Where to install local state (currently unused)
+# If this is a relative path, it will get installed in `prefix` above
+#localstatedir = "/var/lib"
+
+# =============================================================================
+# Options for compiling Rust code itself
+# =============================================================================
+[rust]
+
+# Whether or not to optimize the compiler and standard library.
+# WARNING: Building with optimize = false is NOT SUPPORTED. Due to bootstrapping,
+# building without optimizations takes much longer than optimizing. Further, some platforms
+# fail to build without this optimization (c.f. #65352).
+#optimize = true
+
+# Indicates that the build should be configured for debugging Rust. A
+# `debug`-enabled compiler and standard library will be somewhat
+# slower (due to e.g. checking of debug assertions) but should remain
+# usable.
+#
+# Note: If this value is set to `true`, it will affect a number of
+# configuration options below as well, if they have been left
+# unconfigured in this file.
+#
+# Note: changes to the `debug` setting do *not* affect `optimize`
+# above. In theory, a "maximally debuggable" environment would
+# set `optimize` to `false` above to assist the introspection
+# facilities of debuggers like lldb and gdb. To recreate such an
+# environment, explicitly set `optimize` to `false` and `debug`
+# to `true`. In practice, everyone leaves `optimize` set to
+# `true`, because an unoptimized rustc with debugging
+# enabled becomes *unusably slow* (e.g. rust-lang/rust#24840
+# reported a 25x slowdown) and bootstrapping the supposed
+# "maximally debuggable" environment (notably libstd) takes
+# hours to build.
+#
+#debug = false
+
+# Whether to download the stage 1 and 2 compilers from CI.
+# This is mostly useful for tools; if you have changes to `compiler/` they will be ignored.
+#
+# FIXME: currently, this also uses the downloaded compiler for stage0, but that causes unnecessary rebuilds.
+#download-rustc = false
+
+# Number of codegen units to use for each compiler invocation. A value of 0
+# means "the number of cores on this machine", and 1+ is passed through to the
+# compiler.
+#
+# Uses the rustc defaults: https://doc.rust-lang.org/rustc/codegen-options/index.html#codegen-units
+#codegen-units = if incremental { 256 } else { 16 }
+
+# Sets the number of codegen units to build the standard library with,
+# regardless of what the codegen-unit setting for the rest of the compiler is.
+#codegen-units-std = 1
+
+# Whether or not debug assertions are enabled for the compiler and standard
+# library. Debug assertions control the maximum log level used by rustc. When
+# enabled calls to `trace!` and `debug!` macros are preserved in the compiled
+# binary, otherwise they are omitted.
+#
+# Defaults to rust.debug value
+#debug-assertions = rust.debug (boolean)
+
+# Whether or not debug assertions are enabled for the standard library.
+# Overrides the `debug-assertions` option, if defined.
+#
+# Defaults to rust.debug-assertions value
+#debug-assertions-std = rust.debug-assertions (boolean)
+
+# Whether or not to leave debug! and trace! calls in the rust binary.
+# Overrides the `debug-assertions` option, if defined.
+#
+# Defaults to rust.debug-assertions value
+#
+# If you see a message from `tracing` saying
+# `max_level_info` is enabled and means logging won't be shown,
+# set this value to `true`.
+#debug-logging = rust.debug-assertions (boolean)
+
+# Debuginfo level for most of Rust code, corresponds to the `-C debuginfo=N` option of `rustc`.
+# `0` - no debug info
+# `1` - line tables only - sufficient to generate backtraces that include line
+# information and inlined functions, set breakpoints at source code
+# locations, and step through execution in a debugger.
+# `2` - full debug info with variable and type information
+# Can be overridden for specific subsets of Rust code (rustc, std or tools).
+# Debuginfo for tests run with compiletest is not controlled by this option
+# and needs to be enabled separately with `debuginfo-level-tests`.
+#
+# Note that debuginfo-level = 2 generates several gigabytes of debuginfo
+# and will slow down the linking process significantly.
+#
+# Defaults to 1 if debug is true
+#debuginfo-level = 0
+
+# Debuginfo level for the compiler.
+#
+# Defaults to rust.debuginfo-level value
+#debuginfo-level-rustc = 0
+
+# Debuginfo level for the standard library.
+#
+# Defaults to rust.debuginfo-level value
+#debuginfo-level-std = 0
+
+# Debuginfo level for the tools.
+#
+# Defaults to rust.debuginfo-level value
+#debuginfo-level-tools = 0
+
+# Debuginfo level for the test suites run with compiletest.
+# FIXME(#61117): Some tests fail when this option is enabled.
+#debuginfo-level-tests = 0
+
+# Whether to run `dsymutil` on Apple platforms to gather debug info into .dSYM
+# bundles. `dsymutil` adds time to builds for no clear benefit, and also makes
+# it more difficult for debuggers to find debug info. The compiler currently
+# defaults to running `dsymutil` to preserve its historical default, but when
+# compiling the compiler itself, we skip it by default since we know it's safe
+# to do so in that case.
+#run-dsymutil = false
+
+# Whether or not `panic!`s generate backtraces (RUST_BACKTRACE)
+#backtrace = true
+
+# Whether to always use incremental compilation when building rustc
+#incremental = false
+
+# Build a multi-threaded rustc
+# FIXME(#75760): Some UI tests fail when this option is enabled.
+parallel-compiler = true
+
+# The default linker that will be hard-coded into the generated compiler for
+# targets that don't specify linker explicitly in their target specifications.
+# Note that this is not the linker used to link said compiler.
+default-linker = "gcc"
+
+# The "channel" for the Rust build to produce. The stable/beta channels only
+# allow using stable features, whereas the nightly and dev channels allow using
+# nightly features
+#channel = "dev"
+
+# A descriptive string to be appended to `rustc --version` output, which is
+# also used in places like debuginfo `DW_AT_producer`. This may be useful for
+# supplementary build information, like distro-specific package versions.
+#description = ""
+
+# The root location of the musl installation directory.
+#musl-root = "..."
+
+# By default the `rustc` executable is built with `-Wl,-rpath` flags on Unix
+# platforms to ensure that the compiler is usable by default from the build
+# directory (as it links to a number of dynamic libraries). This may not be
+# desired in distributions, for example.
+#rpath = true
+
+# Prints each test name as it is executed, to help debug issues in the test harness itself.
+#verbose-tests = false
+
+# Flag indicating whether tests are compiled with optimizations (the -O flag).
+#optimize-tests = true
+
+# Flag indicating whether codegen tests will be run or not. If you get an error
+# saying that the FileCheck executable is missing, you may want to disable this.
+# Also see the target's llvm-filecheck option.
+#codegen-tests = true
+
+# Flag indicating whether git info will be retrieved from .git automatically.
+# Having the git information can cause a lot of rebuilds during development.
+# Note: If this attribute is not explicitly set (e.g. if left commented out) it
+# will default to true if channel = "dev", but will default to false otherwise.
+#ignore-git = true
+
+# When creating source tarballs whether or not to create a source tarball.
+#dist-src = false
+
+# After building or testing extended tools (e.g. clippy and rustfmt), append the
+# result (broken, compiling, testing) into this JSON file.
+#save-toolstates = "/path/to/toolstates.json"
+
+# This is an array of the codegen backends that will be compiled for the rustc
+# that's being compiled. The default is to only build the LLVM codegen backend,
+# and currently the only standard options supported are `"llvm"` and `"cranelift"`.
+#codegen-backends = ["llvm"]
+
+# Indicates whether LLD will be compiled and made available in the sysroot for
+# rustc to execute.
+#lld = false
+
+# Indicates whether LLD will be used to link Rust crates during bootstrap on
+# supported platforms. The LLD from the bootstrap distribution will be used
+# and not the LLD compiled during the bootstrap.
+#
+# LLD will not be used if we're cross linking.
+#
+# Explicitly setting the linker for a target will override this option when targeting MSVC.
+#use-lld = false
+
+# Indicates whether some LLVM tools, like llvm-objdump, will be made available in the
+# sysroot.
+#llvm-tools = false
+
+# Whether to deny warnings in crates
+#deny-warnings = true
+
+# Print backtrace on internal compiler errors during bootstrap
+#backtrace-on-ice = false
+
+# Whether to verify generated LLVM IR
+#verify-llvm-ir = false
+
+# Compile the compiler with a non-default ThinLTO import limit. This import
+# limit controls the maximum size of functions imported by ThinLTO. Decreasing
+# will make code compile faster at the expense of lower runtime performance.
+# If `incremental` is set to true above, the import limit will default to 10
+# instead of LLVM's default of 100.
+#thin-lto-import-instr-limit = 100
+
+# Map debuginfo paths to `/rust/$sha/...`, generally only set for releases
+remap-debuginfo = true
+
+# Link the compiler against `jemalloc`, where on Linux and OSX it should
+# override the default allocator for rustc and LLVM.
+#jemalloc = false
+
+# Run tests in various test suites with the "nll compare mode" in addition to
+# running the tests in normal mode. Largely only used on CI and during local
+# development of NLL
+#test-compare-mode = false
+
+# Use LLVM libunwind as the implementation for Rust's unwinder.
+# Accepted values are 'in-tree' (formerly true), 'system' or 'no' (formerly false).
+#llvm-libunwind = 'no'
+
+# Enable Windows Control Flow Guard checks in the standard library.
+# This only applies from stage 1 onwards, and only for Windows targets.
+#control-flow-guard = false
+
+# Enable symbol-mangling-version v0. This can be helpful when profiling rustc,
+# as generics will be preserved in symbols (rather than erased into opaque T).
+#new-symbol-mangling = false
+
+# =============================================================================
+# Options for specific targets
+#
+# Each of the following options is scoped to the specific target triple in
+# question and is used for determining how to compile each target.
+# =============================================================================
+[target.@BUILD_TRIPLE@]
+
+# C compiler to be used to compiler C code. Note that the
+# default value is platform specific, and if not specified it may also depend on
+# what platform is crossing to what platform.
+cc = "gcc"
+
+# C++ compiler to be used to compiler C++ code (e.g. LLVM and our LLVM shims).
+# This is only used for host targets.
+cxx = "g++"
+
+# Archiver to be used to assemble static libraries compiled from C/C++ code.
+# Note: an absolute path should be used, otherwise LLVM build will break.
+#ar = "ar"
+
+# Ranlib to be used to assemble static libraries compiled from C/C++ code.
+# Note: an absolute path should be used, otherwise LLVM build will break.
+#ranlib = "ranlib"
+
+# Linker to be used to link Rust code. Note that the
+# default value is platform specific, and if not specified it may also depend on
+# what platform is crossing to what platform.
+# Setting this will override the `use-lld` option for Rust code when targeting MSVC.
+linker = "gcc"
+
+# Path to the `llvm-config` binary of the installation of a custom LLVM to link
+# against. Note that if this is specified we don't compile LLVM at all for this
+# target.
+llvm-config = "@LLVM_CONFIG@"
+
+# Normally the build system can find LLVM's FileCheck utility, but if
+# not, you can specify an explicit file name for it.
+#llvm-filecheck = "/path/to/FileCheck"
+
+# If this target is for Android, this option will be required to specify where
+# the NDK for the target lives. This is used to find the C compiler to link and
+# build native code.
+#android-ndk = "/path/to/ndk"
+
+# Build the sanitizer runtimes for this target.
+# This option will override the same option under [build] section.
+#sanitizers = false
+
+# Build the profiler runtime for this target(required when compiling with options that depend
+# on this runtime, such as `-C profile-generate` or `-Z instrument-coverage`).
+# This option will override the same option under [build] section.
+#profiler = false
+
+# Force static or dynamic linkage of the standard library for this target. If
+# this target is a host for rustc, this will also affect the linkage of the
+# compiler itself. This is useful for building rustc on targets that normally
+# only use static libraries. If unset, the target's default linkage is used.
+#crt-static = false
+
+# The root location of the musl installation directory. The library directory
+# will also need to contain libunwind.a for an unwinding implementation. Note
+# that this option only makes sense for musl targets that produce statically
+# linked binaries
+#musl-root = "..."
+
+# The full path to the musl libdir.
+#musl-libdir = musl-root/lib
+
+# The root location of the `wasm32-wasi` sysroot. Only used for the
+# `wasm32-wasi` target. If you are building wasm32-wasi target, make sure to
+# create a `[target.wasm32-wasi]` section and move this field there.
+#wasi-root = "..."
+
+# Used in testing for configuring where the QEMU images are located, you
+# probably don't want to use this.
+#qemu-rootfs = "..."
+
+[target.@TARGET_TRIPLE@]
+cc = "@COMPILER_PREFIX@gcc"
+cxx = "@COMPILER_PREFIX@g++"
+ar = "@COMPILER_PREFIX@ar"
+ranlib = "@COMPILER_PREFIX@ranlib"
+linker = "@COMPILER_PREFIX@gcc"
+
+# =============================================================================
+# Distribution options
+#
+# These options are related to distribution, mostly for the Rust project itself.
+# You probably won't need to concern yourself with any of these options
+# =============================================================================
+[dist]
+
+# This is the folder of artifacts that the build system will sign. All files in
+# this directory will be signed with the default gpg key using the system `gpg`
+# binary. The `asc` and `sha256` files will all be output into the standard dist
+# output folder (currently `build/dist`)
+#
+# This folder should be populated ahead of time before the build system is
+# invoked.
+#sign-folder = "path/to/folder/to/sign"
+
+# This is a file which contains the password of the default gpg key. This will
+# be passed to `gpg` down the road when signing all files in `sign-folder`
+# above. This should be stored in plaintext.
+#gpg-password-file = "path/to/gpg/password"
+
+# The remote address that all artifacts will eventually be uploaded to. The
+# build system generates manifests which will point to these urls, and for the
+# manifests to be correct they'll have to have the right URLs encoded.
+#
+# Note that this address should not contain a trailing slash as file names will
+# be appended to it.
+#upload-addr = "https://example.com/folder"
+
+# Whether to build a plain source tarball to upload
+# We disable that on Windows not to override the one already uploaded on S3
+# as the one built on Windows will contain backslashes in paths causing problems
+# on linux
+#src-tarball = true
+#
+
+# Whether to allow failures when building tools
+#missing-tools = false
+
+# List of compression formats to use when generating dist tarballs. The list of
+# formats is provided to rust-installer, which must support all of them.
+#compression-formats = ["gz", "xz"]
diff --git a/patches/rustc-1.35.0/0001-bootstrap-don-t-try-to-canonicalize-the-prefix.patch b/patches/rustc-1.35.0/0001-bootstrap-don-t-try-to-canonicalize-the-prefix.patch
new file mode 100644
index 0000000..e804e36
--- /dev/null
+++ b/patches/rustc-1.35.0/0001-bootstrap-don-t-try-to-canonicalize-the-prefix.patch
@@ -0,0 +1,27 @@
+From: Michael Olbrich <m.olbrich@pengutronix.de>
+Date: Wed, 5 Jun 2019 22:20:52 +0200
+Subject: [PATCH] bootstrap: don't try to canonicalize the prefix
+
+This fails if the prefix does not exist. This can happen when DESTDIR is
+used.
+
+Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
+---
+ src/bootstrap/install.rs | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+diff --git a/src/bootstrap/install.rs b/src/bootstrap/install.rs
+index 2d040d60e5fd..2b098de19ef2 100644
+--- a/src/bootstrap/install.rs
++++ b/src/bootstrap/install.rs
+@@ -67,9 +67,7 @@ fn install_sh(
+ let bindir_default = PathBuf::from("bin");
+ let libdir_default = PathBuf::from("lib");
+ let mandir_default = datadir_default.join("man");
+- let prefix = builder.config.prefix.as_ref().map_or(prefix_default, |p| {
+- fs::canonicalize(p).unwrap_or_else(|_| panic!("could not canonicalize {}", p.display()))
+- });
++ let prefix = builder.config.prefix.as_ref().unwrap_or(&prefix_default);
+ let sysconfdir = builder.config.sysconfdir.as_ref().unwrap_or(&sysconfdir_default);
+ let datadir = builder.config.datadir.as_ref().unwrap_or(&datadir_default);
+ let docdir = builder.config.docdir.as_ref().unwrap_or(&docdir_default);
diff --git a/patches/rustc-1.35.0/series b/patches/rustc-1.35.0/series
new file mode 100644
index 0000000..0084374
--- /dev/null
+++ b/patches/rustc-1.35.0/series
@@ -0,0 +1,4 @@
+# generated by git-ptx-patches
+#tag:base --start-number 1
+0001-bootstrap-don-t-try-to-canonicalize-the-prefix.patch
+# 1f5edf3e0c5c84e08597e035dd18f2b0 - git-ptx-patches magic
diff --git a/rules/cross-rustc.in b/rules/cross-rustc.in
new file mode 100644
index 0000000..999c706
--- /dev/null
+++ b/rules/cross-rustc.in
@@ -0,0 +1,50 @@
+menuconfig CROSS_RUSTC
+ tristate
+ select CROSS_LLVM
+ prompt "rustc "
+ help
+ FIXME
+
+if CROSS_RUSTC
+
+config CROSS_RUSTC_VERSION
+ string
+ prompt "rustc version"
+ help
+ Specify the version of rustc here.
+
+config CROSS_RUSTC_MD5
+ string
+ prompt "rustc source md5sum"
+
+config CROSS_RUSTC_TARGET
+ string
+ default "${PTXCONF_GNU_TARGET}"
+ prompt "rust target triple"
+
+config CROSS_RUSTC_BUILD_VERSION
+ string
+ prompt "build version"
+ help
+ version of the prebuilt rust compiler. It will be used to bootstrap
+ the rust compiler.
+
+config CROSS_RUSTC_BUILD_DATE
+ string
+ prompt "build date"
+ help
+ needed to download the prebuilt rust compiler.
+
+config CROSS_RUSTC_BUILD_STD_MD5
+ string
+ prompt "rust-std binary md5sum"
+
+config CROSS_RUSTC_BUILD_RUSTC_MD5
+ string
+ prompt "rustc binary md5sum"
+
+config CROSS_RUSTC_BUILD_CARGO_MD5
+ string
+ prompt "cargo binary md5sum"
+
+endif
diff --git a/rules/cross-rustc.make b/rules/cross-rustc.make
new file mode 100644
index 0000000..e7d22ad
--- /dev/null
+++ b/rules/cross-rustc.make
@@ -0,0 +1,125 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2019 by Michael Olbrich <m.olbrich@pengutronix.de>
+#
+# See CREDITS for details about who has contributed to this project.
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+#
+# We provide this package
+#
+CROSS_PACKAGES-$(PTXCONF_CROSS_RUSTC) += cross-rustc
+
+#
+# Paths and names
+#
+CROSS_RUSTC_VERSION := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_VERSION))
+CROSS_RUSTC_MD5 := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_MD5))
+CROSS_RUSTC := rustc-$(CROSS_RUSTC_VERSION)
+CROSS_RUSTC_SUFFIX := tar.xz
+CROSS_RUSTC_URL := https://static.rust-lang.org/dist/$(CROSS_RUSTC)-src.$(CROSS_RUSTC_SUFFIX)
+CROSS_RUSTC_SOURCE := $(SRCDIR)/$(CROSS_RUSTC)-src.$(CROSS_RUSTC_SUFFIX)
+CROSS_RUSTC_DIR := $(CROSS_BUILDDIR)/$(CROSS_RUSTC)
+
+CROSS_RUSTC_BUILD_VERSION := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_BUILD_VERSION))
+CROSS_RUSTC_BUILD_DATE := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_BUILD_DATE))
+
+CROSS_RUSTC_BUILD_STD_VERSION := $(CROSS_RUSTC_BUILD_VERSION)
+CROSS_RUSTC_BUILD_STD_MD5 := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_BUILD_STD_MD5))
+CROSS_RUSTC_BUILD_STD := rust-std-$(CROSS_RUSTC_BUILD_STD_VERSION)-$(GNU_BUILD)
+CROSS_RUSTC_BUILD_STD_SUFFIX := tar.xz
+CROSS_RUSTC_BUILD_STD_URL := https://static.rust-lang.org/dist/$(CROSS_RUSTC_BUILD_DATE)/$(CROSS_RUSTC_BUILD_STD).$(CROSS_RUSTC_BUILD_STD_SUFFIX)
+CROSS_RUSTC_BUILD_STD_SOURCE := $(SRCDIR)/$(CROSS_RUSTC_BUILD_STD).$(CROSS_RUSTC_BUILD_STD_SUFFIX)
+$(CROSS_RUSTC_BUILD_STD_SOURCE) := CROSS_RUSTC_BUILD_STD
+CROSS_RUSTC_SOURCES += $(CROSS_RUSTC_BUILD_STD_SOURCE)
+
+CROSS_RUSTC_BUILD_RUSTC_VERSION := $(CROSS_RUSTC_BUILD_VERSION)
+CROSS_RUSTC_BUILD_RUSTC_MD5 := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_BUILD_RUSTC_MD5))
+CROSS_RUSTC_BUILD_RUSTC := rustc-$(CROSS_RUSTC_BUILD_RUSTC_VERSION)-$(GNU_BUILD)
+CROSS_RUSTC_BUILD_RUSTC_SUFFIX := tar.xz
+CROSS_RUSTC_BUILD_RUSTC_URL := https://static.rust-lang.org/dist/$(CROSS_RUSTC_BUILD_DATE)/$(CROSS_RUSTC_BUILD_RUSTC).$(CROSS_RUSTC_BUILD_RUSTC_SUFFIX)
+CROSS_RUSTC_BUILD_RUSTC_SOURCE := $(SRCDIR)/$(CROSS_RUSTC_BUILD_RUSTC).$(CROSS_RUSTC_BUILD_RUSTC_SUFFIX)
+$(CROSS_RUSTC_BUILD_RUSTC_SOURCE) := CROSS_RUSTC_BUILD_RUSTC
+CROSS_RUSTC_SOURCES += $(CROSS_RUSTC_BUILD_RUSTC_SOURCE)
+
+CROSS_RUSTC_BUILD_CARGO_VERSION := $(CROSS_RUSTC_BUILD_VERSION)
+CROSS_RUSTC_BUILD_CARGO_MD5 := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_BUILD_CARGO_MD5))
+CROSS_RUSTC_BUILD_CARGO := cargo-$(CROSS_RUSTC_BUILD_CARGO_VERSION)-$(GNU_BUILD)
+CROSS_RUSTC_BUILD_CARGO_SUFFIX := tar.xz
+CROSS_RUSTC_BUILD_CARGO_URL := https://static.rust-lang.org/dist/$(CROSS_RUSTC_BUILD_DATE)/$(CROSS_RUSTC_BUILD_CARGO).$(CROSS_RUSTC_BUILD_CARGO_SUFFIX)
+CROSS_RUSTC_BUILD_CARGO_SOURCE := $(SRCDIR)/$(CROSS_RUSTC_BUILD_CARGO).$(CROSS_RUSTC_BUILD_CARGO_SUFFIX)
+$(CROSS_RUSTC_BUILD_CARGO_SOURCE) := CROSS_RUSTC_BUILD_CARGO
+CROSS_RUSTC_SOURCES += $(CROSS_RUSTC_BUILD_CARGO_SOURCE)
+
+CROSS_RUSTC_CONFIG := $(call ptx/in-path, PTXDIST_PATH_LAYERS, config/rustc.toml)
+CROSS_RUSTC_TARGET := $(call remove_quotes,$(PTXCONF_CROSS_RUSTC_TARGET))
+CROSS_RUSTC_TARGET_PATH := $(PTXDIST_WORKSPACE)/config/rust
+
+# ----------------------------------------------------------------------------
+# Prepare
+# ----------------------------------------------------------------------------
+
+CROSS_RUSTC_CONF_ENV := \
+ BUILD_TRIPLE=$(GNU_BUILD) \
+ TARGET_TRIPLE=$(CROSS_RUSTC_TARGET) \
+ PREFIX=$(PTXCONF_PREFIX_CROSS) \
+ LLVM_CONFIG=$(CROSS_LLVM_DIR)-build/bin/llvm-config \
+ COMPILER_PREFIX=$(COMPILER_PREFIX)
+
+$(STATEDIR)/cross-rustc.prepare:
+ @$(call targetinfo)
+ @mkdir -p $(CROSS_RUSTC_DIR)/build/cache/$(CROSS_RUSTC_BUILD_DATE)
+ @cp -v \
+ $(CROSS_RUSTC_BUILD_STD_SOURCE) \
+ $(CROSS_RUSTC_BUILD_RUSTC_SOURCE) \
+ $(CROSS_RUSTC_BUILD_CARGO_SOURCE) \
+ $(CROSS_RUSTC_DIR)/build/cache/$(CROSS_RUSTC_BUILD_DATE)/
+ $(CROSS_RUSTC_CONF_ENV) ptxd_replace_magic \
+ $(CROSS_RUSTC_CONFIG) > $(CROSS_RUSTC_DIR)/config.toml
+ @$(call touch)
+
+# ----------------------------------------------------------------------------
+# Compile
+# ----------------------------------------------------------------------------
+
+CROSS_RUSTC_MAKE_ENV := \
+ RUST_TARGET_PATH=$(CROSS_RUSTC_TARGET_PATH)
+
+$(STATEDIR)/cross-rustc.compile:
+ @$(call targetinfo)
+ @$(call world/execute, CROSS_RUSTC, ./x.py build)
+ @$(call touch)
+
+# ----------------------------------------------------------------------------
+# Install
+# ----------------------------------------------------------------------------
+
+define ptx/cross-rustc-wrapper-impl
+echo "Creating '$(1)'..."
+rm -f '$(1)'
+echo '#!/bin/sh' > '$(1)'
+echo 'd="$$(dirname $$(readlink -f "$${0}"))"' >> '$(1)'
+echo 'export RUST_TARGET_PATH="$$d"' >> '$(1)'
+echo 'exec "$$d/rustc" --target $(CROSS_RUSTC_TARGET) "$$@"' >> '$(1)'
+chmod +x '$(1)'
+endef
+
+define ptx/cross-rustc-wrapper
+$(call ptx/cross-rustc-wrapper-impl,$(strip \
+ $(CROSS_RUSTC_PKGDIR)$(PTXCONF_PREFIX_CROSS)/bin/$(COMPILER_PREFIX)rustc))
+endef
+
+$(STATEDIR)/cross-rustc.install:
+ @$(call targetinfo)
+ @$(call world/execute, CROSS_RUSTC, \
+ DESTDIR=$(CROSS_RUSTC_PKGDIR) ./x.py install)
+ @rm -rv $(CROSS_RUSTC_PKGDIR)$(PTXCONF_PREFIX_CROSS)/lib/rustlib/$(GNU_BUILD)/bin
+ @cp -v $(CROSS_RUSTC_TARGET_PATH)/$(CROSS_RUSTC_TARGET).json \
+ $(CROSS_RUSTC_PKGDIR)$(PTXCONF_PREFIX_CROSS)/bin/
+ @$(call ptx/cross-rustc-wrapper)
+ @$(call touch)
+
+# vim: syntax=make