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Add embedded toolchains for cross-compiling

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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
This commit is contained in:
Terry Heo 2020-04-13 18:18:44 -07:00 committed by TensorFlower Gardener
parent cf50b1fb78
commit 4961f18733
12 changed files with 951 additions and 0 deletions
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12
.bazelrc
View File

@ -73,6 +73,10 @@
# tensorflow_testing_rbe_linux: RBE options to use RBE with tensorflow-testing project on linux
# tensorflow_testing_rbe_win: RBE options to use RBE with tensorflow-testing project on windows
#
# Embedded Linux options (experimental and only tested with TFLite build yet)
# elinux: General Embedded Linux options shared by all flavors.
# elinux_aarch64: Embedded Linux options for aarch64 (ARM64) CPU support.
# elinux_armhf: Embedded Linux options for armhf (ARMv7) CPU support.
@ -432,6 +436,14 @@ build:tensorflow_testing_rbe_linux --config=rbe_linux
common:tensorflow_testing_rbe_win --remote_instance_name=projects/tensorflow-testing/instances/windows
build:tensorflow_testing_rbe_win --config=tensorflow_testing_rbe
# TFLite build configs for generic embedded Linux
build:elinux --crosstool_top=@local_config_embedded_arm//:toolchain
build:elinux --host_crosstool_top=@bazel_tools//tools/cpp:toolchain
build:elinux_aarch64 --config=elinux
build:elinux_aarch64 --cpu=aarch64
build:elinux_armhf --config=elinux
build:elinux_armhf --cpu=armhf
# END TF REMOTE BUILD EXECUTION OPTIONS
# Default options should come above this line

6
tensorflow/BUILD
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@ -214,6 +214,12 @@ config_setting(
visibility = ["//visibility:public"],
)
config_setting(
name = "linux_armhf",
values = {"cpu": "armhf"},
visibility = ["//visibility:public"],
)
config_setting(
name = "linux_x86_64",
values = {"cpu": "k8"},

14
tensorflow/lite/kernels/internal/BUILD
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@ -30,6 +30,10 @@ NEON_FLAGS_IF_APPLICABLE = select({
"-O3",
"-mfpu=neon",
],
":armhf": [
"-O3",
"-mfpu=neon",
],
":armv7a": [
"-O3",
"-mfpu=neon",
@ -90,6 +94,13 @@ config_setting(
},
)
config_setting(
name = "armhf",
values = {
"cpu": "armhf",
},
)
config_setting(
name = "armv7a",
values = {
@ -718,6 +729,9 @@ cc_library(
":armeabi-v7a": [
":neon_tensor_utils",
],
":armhf": [
":neon_tensor_utils",
],
":armv7a": [
":neon_tensor_utils",
],

7
tensorflow/opensource_only.files
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@ -218,6 +218,13 @@ tensorflow/third_party/toolchains/cpus/arm/arm_compiler_configure.bzl
tensorflow/third_party/toolchains/cpus/arm/cc_config.bzl.tpl
tensorflow/third_party/toolchains/cpus/py/BUILD
tensorflow/third_party/toolchains/cpus/py3/BUILD
tensorflow/third_party/toolchains/embedded/README.md
tensorflow/third_party/toolchains/embedded/arm-linux/BUILD
tensorflow/third_party/toolchains/embedded/arm-linux/README.md
tensorflow/third_party/toolchains/embedded/arm-linux/aarch64-linux-toolchain.BUILD
tensorflow/third_party/toolchains/embedded/arm-linux/arm_linux_toolchain_configure.bzl
tensorflow/third_party/toolchains/embedded/arm-linux/armhf-linux-toolchain.BUILD
tensorflow/third_party/toolchains/embedded/arm-linux/cc_config.bzl.tpl
tensorflow/third_party/toolchains/java/BUILD
tensorflow/third_party/toolchains/preconfig/generate/BUILD
tensorflow/third_party/toolchains/preconfig/generate/archives.bzl

31
tensorflow/workspace.bzl
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@ -12,6 +12,7 @@ load("//third_party/systemlibs:syslibs_configure.bzl", "syslibs_configure")
load("//third_party/toolchains/remote:configure.bzl", "remote_execution_configure")
load("//third_party/toolchains/clang6:repo.bzl", "clang6_configure")
load("//third_party/toolchains/cpus/arm:arm_compiler_configure.bzl", "arm_compiler_configure")
load("//third_party/toolchains/embedded/arm-linux:arm_linux_toolchain_configure.bzl", "arm_linux_toolchain_configure")
load("//third_party:repo.bzl", "tf_http_archive")
load("//third_party/clang_toolchain:cc_configure_clang.bzl", "cc_download_clang_toolchain")
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_file")
@ -110,6 +111,14 @@ def tf_repositories(path_prefix = "", tf_repo_name = ""):
remote_config_repo_aarch64 = "../aarch64_compiler",
)
# TFLite crossbuild toolchain for embeddeds Linux
arm_linux_toolchain_configure(
name = "local_config_embedded_arm",
build_file = clean_dep("//third_party/toolchains/embedded/arm-linux:BUILD"),
aarch64_repo = "../aarch64_linux_toolchain",
armhf_repo = "../armhf_linux_toolchain",
)
mkl_repository(
name = "mkl_linux",
build_file = clean_dep("//third_party/mkl:mkl.BUILD"),
@ -253,6 +262,28 @@ def tf_repositories(path_prefix = "", tf_repo_name = ""):
],
)
tf_http_archive(
name = "aarch64_linux_toolchain",
build_file = clean_dep("//third_party/toolchains/embedded/arm-linux:aarch64-linux-toolchain.BUILD"),
sha256 = "8ce3e7688a47d8cd2d8e8323f147104ae1c8139520eca50ccf8a7fa933002731",
strip_prefix = "gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu",
urls = [
"https://storage.googleapis.com/mirror.tensorflow.org/developer.arm.com/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz",
"https://developer.arm.com/-/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz",
],
)
tf_http_archive(
name = "armhf_linux_toolchain",
build_file = clean_dep("//third_party/toolchains/embedded/arm-linux:armhf-linux-toolchain.BUILD"),
sha256 = "d4f6480ecaa99e977e3833cc8a8e1263f9eecd1ce2d022bb548a24c4f32670f5",
strip_prefix = "gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf",
urls = [
"https://storage.googleapis.com/mirror.tensorflow.org/developer.arm.com/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf.tar.xz",
"https://developer.arm.com/-/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf.tar.xz",
],
)
tf_http_archive(
name = "libxsmm_archive",
build_file = clean_dep("//third_party:libxsmm.BUILD"),

4
third_party/toolchains/embedded/README.md vendored Normal file
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@ -0,0 +1,4 @@
# Embedded toolchains
This repository contains toolchains for various embedded systems such as
Raspberry Pi and Coral development boards.

66
third_party/toolchains/embedded/arm-linux/BUILD vendored Normal file
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@ -0,0 +1,66 @@
load(":cc_config.bzl", "cc_toolchain_config")
package(default_visibility = ["//visibility:public"])
licenses(["restricted"]) # GPLv3
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",
)
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",
)
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",
)

10
third_party/toolchains/embedded/arm-linux/README.md vendored Normal file
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@ -0,0 +1,10 @@
# ARM GCC toolchains
This repository contains Bazel C++ toolchain configurations for ARM GCC.
The following toolchains are configured:
source: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads
- gcc 8.3
- glibc 2.28
target cpu: aarch64, armhf

81
third_party/toolchains/embedded/arm-linux/aarch64-linux-toolchain.BUILD vendored Normal file
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@ -0,0 +1,81 @@
package(default_visibility = ["//visibility:public"])
filegroup(
name = "gcc",
srcs = [
"bin/aarch64-linux-gnu-gcc",
],
)
filegroup(
name = "ar",
srcs = [
"bin/aarch64-linux-gnu-ar",
],
)
filegroup(
name = "ld",
srcs = [
"bin/aarch64-linux-gnu-ld",
],
)
filegroup(
name = "nm",
srcs = [
"bin/aarch64-linux-gnu-nm",
],
)
filegroup(
name = "objcopy",
srcs = [
"bin/aarch64-linux-gnu-objcopy",
],
)
filegroup(
name = "objdump",
srcs = [
"bin/aarch64-linux-gnu-objdump",
],
)
filegroup(
name = "strip",
srcs = [
"bin/aarch64-linux-gnu-strip",
],
)
filegroup(
name = "as",
srcs = [
"bin/aarch64-linux-gnu-as",
],
)
filegroup(
name = "compiler_pieces",
srcs = glob([
"aarch64-linux-gnu/**",
"libexec/**",
"lib/gcc/aarch64-linux-gnu/**",
"include/**",
]),
)
filegroup(
name = "compiler_components",
srcs = [
":ar",
":as",
":gcc",
":ld",
":nm",
":objcopy",
":objdump",
":strip",
],
)

30
third_party/toolchains/embedded/arm-linux/arm_linux_toolchain_configure.bzl vendored Normal file
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@ -0,0 +1,30 @@
"""Repository rule for ARM cross compiler autoconfiguration."""
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,
)
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")
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(),
},
)

81
third_party/toolchains/embedded/arm-linux/armhf-linux-toolchain.BUILD vendored Normal file
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@ -0,0 +1,81 @@
package(default_visibility = ["//visibility:public"])
filegroup(
name = "gcc",
srcs = [
"bin/arm-linux-gnueabihf-gcc",
],
)
filegroup(
name = "ar",
srcs = [
"bin/arm-linux-gnueabihf-ar",
],
)
filegroup(
name = "ld",
srcs = [
"bin/arm-linux-gnueabihf-ld",
],
)
filegroup(
name = "nm",
srcs = [
"bin/arm-linux-gnueabihf-nm",
],
)
filegroup(
name = "objcopy",
srcs = [
"bin/arm-linux-gnueabihf-objcopy",
],
)
filegroup(
name = "objdump",
srcs = [
"bin/arm-linux-gnueabihf-objdump",
],
)
filegroup(
name = "strip",
srcs = [
"bin/arm-linux-gnueabihf-strip",
],
)
filegroup(
name = "as",
srcs = [
"bin/arm-linux-gnueabihf-as",
],
)
filegroup(
name = "compiler_pieces",
srcs = glob([
"arm-linux-gnueabihf/**",
"libexec/**",
"lib/gcc/arm-linux-gnueabihf/**",
"include/**",
]),
)
filegroup(
name = "compiler_components",
srcs = [
":ar",
":as",
":gcc",
":ld",
":nm",
":objcopy",
":objdump",
":strip",
],
)

609
third_party/toolchains/embedded/arm-linux/cc_config.bzl.tpl vendored Normal file
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@ -0,0 +1,609 @@
load("@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
"action_config",
"artifact_name_pattern",
"env_entry",
"env_set",
"feature",
"feature_set",
"flag_group",
"flag_set",
"make_variable",
"tool",
"tool_path",
"variable_with_value",
"with_feature_set",
)
load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
def _impl(ctx):
if (ctx.attr.cpu == "aarch64"):
toolchain_identifier = "aarch64-linux-gnu"
host_system_name = "aarch64"
target_system_name = "aarch64"
target_cpu = "aarch64"
target_libc = "aarch64"
abi_version = "aarch64"
abi_libc_version = "aarch64"
elif (ctx.attr.cpu == "armhf"):
toolchain_identifier = "armhf-linux-gnueabihf"
host_system_name = "armhf"
target_system_name = "armhf"
target_cpu = "armhf"
target_libc = "armhf"
abi_version = "armhf"
abi_libc_version = "armhf"
else:
fail("Unreachable")
compiler = "compiler"
cc_target_os = None
builtin_sysroot = None
all_compile_actions = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.clif_match,
ACTION_NAMES.lto_backend,
]
all_cpp_compile_actions = [
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.clif_match,
]
preprocessor_compile_actions = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.clif_match,
]
codegen_compile_actions = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
]
all_link_actions = [
ACTION_NAMES.cpp_link_executable,
ACTION_NAMES.cpp_link_dynamic_library,
ACTION_NAMES.cpp_link_nodeps_dynamic_library,
]
if (ctx.attr.cpu == "aarch64" or ctx.attr.cpu == "armhf"):
action_configs = []
else:
fail("Unreachable")
opt_feature = feature(name = "opt")
dbg_feature = feature(name = "dbg")
sysroot_feature = feature(
name = "sysroot",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
ACTION_NAMES.cpp_link_executable,
ACTION_NAMES.cpp_link_dynamic_library,
ACTION_NAMES.cpp_link_nodeps_dynamic_library,
],
flag_groups = [
flag_group(
flags = ["--sysroot=%{sysroot}"],
expand_if_available = "sysroot",
),
],
),
],
)
if (ctx.attr.cpu == "aarch64" or ctx.attr.cpu == "armhf"):
unfiltered_compile_flags_feature = feature(
name = "unfiltered_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-Wno-builtin-macro-redefined",
"-D__DATE__=\"redacted\"",
"-D__TIMESTAMP__=\"redacted\"",
"-D__TIME__=\"redacted\"",
"-no-canonical-prefixes",
"-fno-canonical-system-headers",
],
),
],
),
],
)
else:
unfiltered_compile_flags_feature = None
if (ctx.attr.cpu == "aarch64"):
default_compile_flags_feature = feature(
name = "default_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-fstack-protector", # TODO: needed?
],
),
],
),
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [flag_group(flags = ["-g"])],
with_features = [with_feature_set(features = ["dbg"])],
),
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-g0",
"-O2",
"-DNDEBUG",
"-ffunction-sections",
"-fdata-sections",
],
),
],
with_features = [with_feature_set(features = ["opt"])],
),
flag_set(
actions = [
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-isystem",
"%{AARCH64_COMPILER_PATH}%/lib/gcc/aarch64-linux-gnu/8.3.0/include",
"-isystem",
"%{AARCH64_COMPILER_PATH}%/lib/gcc/aarch64-linux-gnu/8.3.0/include-fixed",
"-isystem",
"%{AARCH64_COMPILER_PATH}%/aarch64-linux-gnu/include/c++/8.3.0/",
"-isystem",
"%{AARCH64_COMPILER_PATH}%/aarch64-linux-gnu/libc/usr/include/",
],
),
],
),
],
)
elif (ctx.attr.cpu == "armhf"):
default_compile_flags_feature = feature(
name = "default_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-fstack-protector",
],
),
],
),
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [flag_group(flags = ["-g"])],
with_features = [with_feature_set(features = ["dbg"])],
),
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-g0",
"-O2",
"-DNDEBUG",
"-ffunction-sections",
"-fdata-sections",
],
),
],
with_features = [with_feature_set(features = ["opt"])],
),
flag_set(
actions = [
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = [
"-isystem",
"%{ARMHF_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/8.3.0/include",
"-isystem",
"%{ARMHF_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/8.3.0/include-fixed",
"-isystem",
"%{ARMHF_COMPILER_PATH}%/arm-linux-gnueabihf/include/c++/8.3.0/",
"-isystem",
"%{ARMHF_COMPILER_PATH}%/arm-linux-gnueabihf/libc/usr/include/",
],
),
],
),
],
)
else:
default_compile_flags_feature = None
if (ctx.attr.cpu == "aarch64"):
default_link_flags_feature = feature(
name = "default_link_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_link_actions,
flag_groups = [
flag_group(
flags = [
"-lstdc++",
"-Wl,-z,relro,-z,now",
"-no-canonical-prefixes",
"-pass-exit-codes",
"-Wl,--build-id=md5",
"-Wl,--hash-style=gnu",
],
),
],
),
flag_set(
actions = all_link_actions,
flag_groups = [flag_group(flags = ["-Wl,--gc-sections"])],
with_features = [with_feature_set(features = ["opt"])],
),
],
)
elif (ctx.attr.cpu == "armhf"):
default_link_flags_feature = feature(
name = "default_link_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_link_actions,
flag_groups = [
flag_group(
flags = [
"-lstdc++",
"-Wl,-z,relro,-z,now",
"-no-canonical-prefixes",
"-pass-exit-codes",
"-Wl,--build-id=md5",
"-Wl,--hash-style=gnu",
],
),
],
),
flag_set(
actions = all_link_actions,
flag_groups = [flag_group(flags = ["-Wl,--gc-sections"])],
with_features = [with_feature_set(features = ["opt"])],
),
],
)
else:
default_link_flags_feature = None
supports_dynamic_linker_feature = feature(name = "supports_dynamic_linker", enabled = True)
supports_pic_feature = feature(name = "supports_pic", enabled = True)
user_compile_flags_feature = feature(
name = "user_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.lto_backend,
ACTION_NAMES.clif_match,
],
flag_groups = [
flag_group(
flags = ["%{user_compile_flags}"],
iterate_over = "user_compile_flags",
expand_if_available = "user_compile_flags",
),
],
),
],
)
if (ctx.attr.cpu == "aarch64" or ctx.attr.cpu == "armhf"):
features = [
default_compile_flags_feature,
default_link_flags_feature,
supports_dynamic_linker_feature,
supports_pic_feature,
opt_feature,
dbg_feature,
user_compile_flags_feature,
sysroot_feature,
unfiltered_compile_flags_feature,
]
else:
fail("Unreachable")
if (ctx.attr.cpu == "aarch64"):
cxx_builtin_include_directories = [
"%{AARCH64_COMPILER_PATH}%/lib/gcc/aarch64-linux-gnu/8.3.0/include",
"%{AARCH64_COMPILER_PATH}%/lib/gcc/aarch64-linux-gnu/8.3.0/include-fixed",
"%{AARCH64_COMPILER_PATH}%/aarch64-linux-gnu/include/c++/8.3.0/",
"%{AARCH64_COMPILER_PATH}%/aarch64-linux-gnu/libc/usr/include/",
]
elif (ctx.attr.cpu == "armhf"):
cxx_builtin_include_directories = [
"%{ARMHF_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/8.3.0/include",
"%{ARMHF_COMPILER_PATH}%/lib/gcc/arm-linux-gnueabihf/8.3.0/include-fixed",
"%{ARMHF_COMPILER_PATH}%/arm-linux-gnueabihf/include/c++/8.3.0/",
"%{ARMHF_COMPILER_PATH}%/arm-linux-gnueabihf/libc/usr/include/",
]
else:
fail("Unreachable")
artifact_name_patterns = []
make_variables = []
if (ctx.attr.cpu == "aarch64"):
tool_paths = [
tool_path(
name = "ar",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-ar",
),
tool_path(name = "compat-ld", path = "/bin/false"),
tool_path(
name = "cpp",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-cpp",
),
tool_path(
name = "dwp",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-dwp",
),
tool_path(
name = "gcc",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-gcc",
),
tool_path(
name = "gcov",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-gcov",
),
tool_path(
name = "ld",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-ld",
),
tool_path(
name = "nm",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-nm",
),
tool_path(
name = "objcopy",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-objcopy",
),
tool_path(
name = "objdump",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-objdump",
),
tool_path(
name = "strip",
path = "%{AARCH64_COMPILER_PATH}%/bin/aarch64-linux-gnu-strip",
),
]
elif (ctx.attr.cpu == "armhf"):
tool_paths = [
tool_path(
name = "ar",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-ar",
),
tool_path(name = "compat-ld", path = "/bin/false"),
tool_path(
name = "cpp",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-cpp",
),
tool_path(
name = "dwp",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-dwp",
),
tool_path(
name = "gcc",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-gcc",
),
tool_path(
name = "gcov",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-gcov",
),
tool_path(
name = "ld",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-ld",
),
tool_path(
name = "nm",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-nm",
),
tool_path(
name = "objcopy",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-objcopy",
),
tool_path(
name = "objdump",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-objdump",
),
tool_path(
name = "strip",
path = "%{ARMHF_COMPILER_PATH}%/bin/arm-linux-gnueabihf-strip",
),
]
else:
fail("Unreachable")
out = ctx.actions.declare_file(ctx.label.name)
ctx.actions.write(out, "Fake executable")
return [
cc_common.create_cc_toolchain_config_info(
ctx = ctx,
features = features,
action_configs = action_configs,
artifact_name_patterns = artifact_name_patterns,
cxx_builtin_include_directories = cxx_builtin_include_directories,
toolchain_identifier = toolchain_identifier,
host_system_name = host_system_name,
target_system_name = target_system_name,
target_cpu = target_cpu,
target_libc = target_libc,
compiler = compiler,
abi_version = abi_version,
abi_libc_version = abi_libc_version,
tool_paths = tool_paths,
make_variables = make_variables,
builtin_sysroot = builtin_sysroot,
cc_target_os = cc_target_os
),
DefaultInfo(
executable = out,
),
]
cc_toolchain_config = rule(
implementation = _impl,
attrs = {
"cpu": attr.string(mandatory=True, values=["aarch64", "armhf"]),
},
provides = [CcToolchainConfigInfo],
executable = True,
)