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Add embedded toolchains for cross-compiling
Added Bazel toolchain configuration for ARM's GNU toolchain. - https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain - GCC 8.3-2019.03 This configuration handles following CPU and build config_settings. - armhf: linux_armhf - aarch64: linux_aarch64 PiperOrigin-RevId: 306351085 Change-Id: I479d52e2243be9f75888ea81c7250e9072825da5
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| # Embedded toolchains | ||
|
|
||
| This repository contains toolchains for various embedded systems such as | ||
| Raspberry Pi and Coral development boards. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| load(":cc_config.bzl", "cc_toolchain_config") | ||
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| package(default_visibility = ["//visibility:public"]) | ||
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| licenses(["restricted"]) # GPLv3 | ||
|
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| cc_toolchain_suite( | ||
| name = "toolchain", | ||
| toolchains = { | ||
| "aarch64": ":cc-compiler-aarch64", | ||
| "armhf": ":cc-compiler-armhf", | ||
| }, | ||
| ) | ||
|
|
||
| filegroup( | ||
| name = "empty", | ||
| srcs = [], | ||
| ) | ||
|
|
||
| filegroup( | ||
| name = "aarch64_toolchain_all_files", | ||
| srcs = [ | ||
| "@aarch64_linux_toolchain//:compiler_pieces", | ||
| ], | ||
| ) | ||
|
|
||
| filegroup( | ||
| name = "armhf_toolchain_all_files", | ||
| srcs = [ | ||
| "@armhf_linux_toolchain//:compiler_pieces", | ||
| ], | ||
| ) | ||
|
|
||
| cc_toolchain_config( | ||
| name = "aarch64_toolchain_config", | ||
| cpu = "aarch64", | ||
| ) | ||
|
|
||
| cc_toolchain_config( | ||
| name = "armhf_toolchain_config", | ||
| cpu = "armhf", | ||
| ) | ||
|
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||
| cc_toolchain( | ||
| name = "cc-compiler-aarch64", | ||
| all_files = ":aarch64_toolchain_all_files", | ||
| compiler_files = ":aarch64_toolchain_all_files", | ||
| dwp_files = ":empty", | ||
| linker_files = ":aarch64_toolchain_all_files", | ||
| objcopy_files = "aarch64_toolchain_all_files", | ||
| strip_files = "aarch64_toolchain_all_files", | ||
| supports_param_files = 1, | ||
| toolchain_config = ":aarch64_toolchain_config", | ||
| ) | ||
|
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||
| cc_toolchain( | ||
| name = "cc-compiler-armhf", | ||
| all_files = ":armhf_toolchain_all_files", | ||
| compiler_files = ":armhf_toolchain_all_files", | ||
| dwp_files = ":empty", | ||
| linker_files = ":armhf_toolchain_all_files", | ||
| objcopy_files = "armhf_toolchain_all_files", | ||
| strip_files = "armhf_toolchain_all_files", | ||
| supports_param_files = 1, | ||
| toolchain_config = ":armhf_toolchain_config", | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| # ARM GCC toolchains | ||
|
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| This repository contains Bazel C++ toolchain configurations for ARM GCC. | ||
| The following toolchains are configured: | ||
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| source: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads | ||
| - gcc 8.3 | ||
| - glibc 2.28 | ||
|
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| target cpu: aarch64, armhf |
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81
third_party/toolchains/embedded/arm-linux/aarch64-linux-toolchain.BUILD
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package(default_visibility = ["//visibility:public"]) | ||
|
|
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| filegroup( | ||
| name = "gcc", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-gcc", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "ar", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-ar", | ||
| ], | ||
| ) | ||
|
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||
| filegroup( | ||
| name = "ld", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-ld", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "nm", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-nm", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "objcopy", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-objcopy", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "objdump", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-objdump", | ||
| ], | ||
| ) | ||
|
|
||
| filegroup( | ||
| name = "strip", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-strip", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "as", | ||
| srcs = [ | ||
| "bin/aarch64-linux-gnu-as", | ||
| ], | ||
| ) | ||
|
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| filegroup( | ||
| name = "compiler_pieces", | ||
| srcs = glob([ | ||
| "aarch64-linux-gnu/**", | ||
| "libexec/**", | ||
| "lib/gcc/aarch64-linux-gnu/**", | ||
| "include/**", | ||
| ]), | ||
| ) | ||
|
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| filegroup( | ||
| name = "compiler_components", | ||
| srcs = [ | ||
| ":ar", | ||
| ":as", | ||
| ":gcc", | ||
| ":ld", | ||
| ":nm", | ||
| ":objcopy", | ||
| ":objdump", | ||
| ":strip", | ||
| ], | ||
| ) |
30 changes: 30 additions & 0 deletions
30
third_party/toolchains/embedded/arm-linux/arm_linux_toolchain_configure.bzl
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| """Repository rule for ARM cross compiler autoconfiguration.""" | ||
|
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| def _tpl(repository_ctx, tpl, substitutions = {}, out = None): | ||
| if not out: | ||
| out = tpl | ||
| repository_ctx.template( | ||
| out, | ||
| Label("//third_party/toolchains/embedded/arm-linux:%s.tpl" % tpl), | ||
| substitutions, | ||
| ) | ||
|
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| def _arm_linux_toolchain_configure_impl(repository_ctx): | ||
| _tpl(repository_ctx, "cc_config.bzl", { | ||
| "%{AARCH64_COMPILER_PATH}%": str(repository_ctx.path( | ||
| repository_ctx.attr.aarch64_repo, | ||
| )), | ||
| "%{ARMHF_COMPILER_PATH}%": str(repository_ctx.path( | ||
| repository_ctx.attr.armhf_repo, | ||
| )), | ||
| }) | ||
| repository_ctx.symlink(repository_ctx.attr.build_file, "BUILD") | ||
|
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| arm_linux_toolchain_configure = repository_rule( | ||
| implementation = _arm_linux_toolchain_configure_impl, | ||
| attrs = { | ||
| "aarch64_repo": attr.string(mandatory = True, default = ""), | ||
| "armhf_repo": attr.string(mandatory = True, default = ""), | ||
| "build_file": attr.label(), | ||
| }, | ||
| ) |
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