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add mingw support [AP-2090] (#145)
Add MingW Cross Compiler Toolchain Testing: The current consumer of this toolchain is Starling-Core. This toolchain is limited to an x86_64 Linux host to build an x86_64 Windows target. With this toolchain, we are generating a binary and a static library. The artifacts were generated using CI/CD and were tested on Linux using Wine and on a Windows 11 system. The static library that was generated was also tested on Windows 11 to generate the binary and static data was passed, and the results were compared. The same steps above were also done on an x86_64 Ubuntu 24.04 developer machine.
1 parent 8d9b80a commit c33a467

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‎cc/repositories.bzl‎

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@@ -20,6 +20,8 @@ AARCH64_LINUX_LLVM = "https://github.com/llvm/llvm-project/releases/download/llv
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X86_64_LINUX_LLVM = "https://github.com/llvm/llvm-project/releases/download/llvmorg-14.0.0/clang%2Bllvm-14.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz"
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X86_64_LINUX_UCRT_LLVM_MINGW = "https://github.com/mstorsjo/llvm-mingw/releases/download/20241203/llvm-mingw-20241203-ucrt-ubuntu-20.04-x86_64.tar.xz"
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AARCH64_LINUX_MUSL = "https://github.com/swift-nav/swift-toolchains/releases/download/musl-cross-11.2.0/aarch64-linux-musl-cross.tar.gz"
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ARM_LINUX_MUSLEABIHF = "https://github.com/swift-nav/swift-toolchains/releases/download/musl-cross-11.2.0/arm-linux-musleabihf-cross.tar.gz"
@@ -158,6 +160,18 @@ def x86_64_linux_musl_toolchain():
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def register_x86_64_linux_musl_toolchain():
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native.register_toolchains("@rules_swiftnav//cc/toolchains/musl/x86_64:toolchain")
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def llvm_mingw_toolchain():
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http_archive(
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name = "llvm_mingw_toolchain",
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build_file = "@rules_swiftnav//cc/toolchains/llvm_x86_64_windows:toolchain.BUILD",
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sha256 = "21458febf5d2c918df922dd0da60137a8787e5e6b427925a1977c882fc79b550",
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strip_prefix = "llvm-mingw-20241203-ucrt-ubuntu-20.04-x86_64",
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url = X86_64_LINUX_UCRT_LLVM_MINGW,
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)
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def register_llvm_mingw_toolchain():
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native.register_toolchains("@rules_swiftnav//cc/toolchains/llvm_x86_64_windows:mingw_toolchain")
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def gcc_arm_embedded_toolchain():
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http_archive(
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name = "x86_64_linux_gcc_arm_embedded_toolchain",

‎cc/toolchains/llvm_x86_64_windows/BUILD.bazel‎

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# Copyright (C) 2024 Swift Navigation Inc.
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# Contact: Swift Navigation <[email protected]>
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#
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# This source is subject to the license found in the file 'LICENSE' which must
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# be be distributed together with this source. All other rights reserved.
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#
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# THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
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# EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
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load(":config.bzl", "config")
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filegroup(name = "empty")
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constraint_value(
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name = "llvm_mingw_toolchain",
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constraint_setting = "@rules_swiftnav//cc/constraints:toolchain",
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visibility = ["//visibility:public"],
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)
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filegroup(
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name = "wrappers",
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srcs = glob([
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"wrappers/**",
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]),
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visibility = ["//visibility:public"],
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)
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filegroup(
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name = "ar_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:ar",
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],
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)
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filegroup(
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name = "as_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:as",
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],
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)
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filegroup(
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name = "compiler_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:bin",
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"@llvm_mingw_toolchain//:include",
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],
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)
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filegroup(
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name = "dwp_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:dwp",
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],
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)
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filegroup(
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name = "linker_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:ar",
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"@llvm_mingw_toolchain//:clang",
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"@llvm_mingw_toolchain//:gcc",
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"@llvm_mingw_toolchain//:ld",
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"@llvm_mingw_toolchain//:lib",
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],
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)
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filegroup(
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name = "objcopy_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:objcopy",
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],
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)
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filegroup(
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name = "strip_files",
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srcs = [
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":wrappers",
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"@llvm_mingw_toolchain//:strip",
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],
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)
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filegroup(
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name = "all_files",
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srcs = [
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":compiler_files",
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":linker_files",
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"@llvm_mingw_toolchain//:bin",
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],
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)
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config(name = "config")
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cc_toolchain(
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name = "cc_toolchain",
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all_files = ":all_files",
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ar_files = ":ar_files",
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as_files = ":as_files",
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compiler_files = ":compiler_files",
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dwp_files = ":empty",
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linker_files = ":linker_files",
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objcopy_files = ":objcopy_files",
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strip_files = ":strip_files",
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supports_param_files = 0,
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toolchain_config = ":config",
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toolchain_identifier = "llvm-mingw",
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)
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toolchain(
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name = "mingw_toolchain",
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exec_compatible_with = [
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"@platforms//cpu:x86_64",
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"@platforms//os:linux",
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],
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target_compatible_with = [
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"@platforms//cpu:x86_64",
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"@platforms//os:windows",
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],
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target_settings = None,
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toolchain = ":cc_toolchain",
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toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
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visibility = ["//visibility:public"],
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)

‎cc/toolchains/llvm_x86_64_windows/config.bzl‎

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load("@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl", "feature", "flag_group", "flag_set", "tool_path", "with_feature_set")
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load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
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def _impl(ctx):
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SDK_PATH_PREFIX = "wrappers/x86_64-w64-mingw32uwp-{}"
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tool_paths = [
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tool_path(
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name = "ar",
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path = SDK_PATH_PREFIX.format("ar"),
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),
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tool_path(
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name = "as",
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path = SDK_PATH_PREFIX.format("as"),
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),
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tool_path(
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name = "cpp",
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path = SDK_PATH_PREFIX.format("cpp"),
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),
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tool_path(
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name = "gcc",
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path = SDK_PATH_PREFIX.format("gcc"),
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),
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tool_path(
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name = "g++",
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path = SDK_PATH_PREFIX.format("g++"),
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),
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tool_path(
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name = "gcov",
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path = SDK_PATH_PREFIX.format("gcov"),
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),
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tool_path(
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name = "ld",
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path = SDK_PATH_PREFIX.format("ld"),
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),
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tool_path(
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name = "nm",
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path = SDK_PATH_PREFIX.format("nm"),
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),
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tool_path(
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name = "objcopy",
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path = SDK_PATH_PREFIX.format("objcopy"),
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),
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tool_path(
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name = "objdump",
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path = SDK_PATH_PREFIX.format("objdump"),
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),
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tool_path(
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name = "ranlib",
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path = SDK_PATH_PREFIX.format("ranlib"),
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),
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tool_path(
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name = "strip",
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path = SDK_PATH_PREFIX.format("strip"),
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),
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]
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all_compile_actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.clif_match,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.preprocess_assemble,
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]
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opt_feature = feature(name = "opt")
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features = [
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feature(
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name = "default_compile_actions",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = all_compile_actions,
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flag_groups = ([
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flag_group(
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flags = [
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"--sysroot=external/llvm_mingw_toolchain",
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"-no-canonical-prefixes",
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# Reproducibility
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"-Wno-builtin-macro-redefined",
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"-D__DATE__=\"redacted\"",
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"-D__TIMESTAMP__=\"redacted\"",
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"-D__TIME__=\"redacted\"",
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],
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),
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]),
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),
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flag_set(
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actions = all_compile_actions,
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flag_groups = ([
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flag_group(
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flags = ["-O2", "-g"],
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),
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]),
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with_features = [with_feature_set(features = ["opt"])],
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),
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],
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),
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feature(
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name = "default_link_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.cpp_link_executable,
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ACTION_NAMES.cpp_link_dynamic_library,
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ACTION_NAMES.cpp_link_nodeps_dynamic_library,
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],
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flag_groups = ([
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flag_group(
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flags = [
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"-lstdc++",
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"-lm",
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"-static",
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],
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),
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]),
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),
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],
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),
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opt_feature,
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]
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return cc_common.create_cc_toolchain_config_info(
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ctx = ctx,
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features = features,
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toolchain_identifier = "llvm-mingw",
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host_system_name = "local",
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target_system_name = "local",
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target_cpu = "x86_64",
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target_libc = "unknown",
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compiler = "llvm",
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abi_version = "unknown",
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abi_libc_version = "unknown",
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tool_paths = tool_paths,
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)
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config = rule(
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implementation = _impl,
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attrs = {
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"c_opts": attr.string_list(),
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"link_opts": attr.string_list(),
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},
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provides = [CcToolchainConfigInfo],
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)

‎cc/toolchains/llvm_x86_64_windows/toolchain.BUILD‎

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package(default_visibility = ["//visibility:public"])
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filegroup(
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name = "gcc",
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srcs = [
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"bin/x86_64-w64-mingw32uwp-c++",
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"bin/x86_64-w64-mingw32uwp-g++",
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"bin/x86_64-w64-mingw32uwp-gcc",
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],
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)
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filegroup(
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name = "clang",
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srcs = [
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"bin/clang-cpp",
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"bin/x86_64-w64-mingw32uwp-clang",
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"bin/x86_64-w64-mingw32uwp-clang++",
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],
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)
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filegroup(
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name = "ld",
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srcs = [
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"bin/x86_64-w64-mingw32uwp-ld",
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],
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)
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filegroup(
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name = "include",
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srcs = glob([
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"x86_64-w64-mingw32/include/**",
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"lib/clang/*/include/**",
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"generic-w64-mingw32/include/c++/v1/*",
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]),
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)
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filegroup(
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name = "bin",
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srcs = glob([
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"bin/**",
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"x86_64-w64-mingw32/**",
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]),
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)
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filegroup(
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name = "lib",
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srcs = glob([
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"lib/**/lib*.a",
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"lib/clang/*/lib/**/*.a",
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"x86_64-w64-mingw32/lib/*.a",
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]),
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)
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filegroup(
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name = "ar",
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srcs = ["bin/x86_64-w64-mingw32uwp-ar"],
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)
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filegroup(
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name = "as",
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srcs = ["bin/x86_64-w64-mingw32uwp-as"],
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)
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filegroup(
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name = "nm",
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srcs = ["bin/x86_64-w64-mingw32uwp-nm"],
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)
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filegroup(
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name = "objcopy",
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srcs = ["bin/x86_64-w64-mingw32uwp-objcopy"],
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)
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filegroup(
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name = "objdump",
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srcs = ["bin/x86_64-w64-mingw32uwp-objdump"],
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)
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filegroup(
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name = "ranlib",
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srcs = ["bin/x86_64-w64-mingw32uwp-ranlib"],
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)
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filegroup(
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name = "strip",
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srcs = ["bin/x86_64-w64-mingw32uwp-strip"],
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)

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