BUILD.bazel - platform/prebuilts/clang/host/linux-x86 - Git at Google

 # NOTE: THIS FILE IS EXPERIMENTAL FOR THE BAZEL MIGRATION AND NOT USED FOR
 # YOUR BUILDS CURRENTLY.
 #
 # It is not yet the source of truth for your build. If you're looking to modify
 # the build file, modify the Android.bp file instead. Do *not* modify this file
 # unless you have coordinated with the team managing the Soong to Bazel
 # migration.

 package(default_visibility = ["//visibility:public"])

 # Toolchain config
 filegroup(name = "empty")

 load(":cc_toolchain_config.bzl", "android_cc_toolchain", "clang_version")
 load(":clang_version.bzl", "DEFAULT_SHORT_VERSION", "DEFAULT_VERSION")
 load("@soong_injection//cc_toolchain:constants.bzl", "constants")

 # Different clang versions are configured here.
 clang_version(
     name = "clang",
     directory = DEFAULT_VERSION,
     includes = [
         "lib64/clang/%s/include" % DEFAULT_SHORT_VERSION,
     ],
 )

 _LIBCLANG_RT_PREFIX = "%s/lib64/clang/%s/lib/linux" % (DEFAULT_VERSION, DEFAULT_SHORT_VERSION)
 _LIBCLANG_RT_PREBUILT_MAP = {
     "//build/bazel/platforms/os_arch:android_arm": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-arm-android.a",
     "//build/bazel/platforms/os_arch:android_arm64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-aarch64-android.a",
     "//build/bazel/platforms/os_arch:android_x86": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-i686-android.a",
     "//build/bazel/platforms/os_arch:android_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64-android.a",
     "//build/bazel/platforms/os_arch:linux_bionic_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64-android.a",
     "//build/bazel/platforms/os_arch:linux_glibc_x86": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-i386.a",
     "//build/bazel/platforms/os_arch:linux_glibc_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64.a",
     "//conditions:default": None,
 }

 # x86_64 toolchain definition.
 android_cc_toolchain(
     name = "cc_toolchain_x86_64",
     clang_version = ":clang",
     clang_version_directory = DEFAULT_VERSION,
     libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_x86_64"],
     target_flags = [
         "-m64",
         "-march=x86-64",
         "--target=x86_64-linux-android10000",
         "-mssse3",
         "-msse4",
         "-msse4.1",
         "-msse4.2",
         "-mpopcnt",
     ],
     toolchain_identifier = "x86_64-toolchain",
 )

 toolchain(
     name = "cc_toolchain_x86_64_def",
     exec_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     target_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:android",
     ],
     toolchain = ":cc_toolchain_x86_64",
     toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
 )

 # Toolchain to compile for the linux host.
 # TODO(b/186628704): automatically generate from Soong.
 android_cc_toolchain(
     name = "cc_toolchain_x86_64_linux_host",
     clang_version = ":clang",
     clang_version_directory = DEFAULT_VERSION,
     libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:linux_glibc_x86_64"],
     target_flags = [
         "-m64",
         "-fdiagnostics-color",
         "-Wa,--noexecstack",
         "-fPIC",
         "-U_FORTIFY_SOURCE",
         "-D_FORTIFY_SOURCE=2",
         "-fstack-protector",
         # Workaround differences in inttypes.h between host and target.
         # See bug 12708004.
         "-D__STDC_FORMAT_MACROS",
         "-D__STDC_CONSTANT_MACROS",
     ],
     linker_flags = [
         "-m64",
         "-Wl,-z,noexecstack",
         "-Wl,-z,relro",
         "-Wl,-z,now",
         "-Wl,--no-undefined-version",
     ],
     toolchain_identifier = "x86_64-toolchain",
 )

 # TODO(b/181803350): Fix linux toolchain flag set, as the current flags are for android.
 toolchain(
     name = "cc_toolchain_x86_64_linux_host_def",
     exec_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     target_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     toolchain = ":cc_toolchain_x86_64_linux_host",
     toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
 )

 # x86 toolchain definition.
 android_cc_toolchain(
     name = "cc_toolchain_x86",
     clang_version = ":clang",
     clang_version_directory = DEFAULT_VERSION,
     libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_x86"],
     linker_flags = [
         "-Wl,-dynamic-linker,/system/bin/linker",
     ],
     target_flags = [
         "--target=i686-linux-android10000",
         "-m32",
         "-march=prescott",
         "-msse3",
         "-mstackrealign",
     ],
     toolchain_identifier = "x86-toolchain",
 )

 toolchain(
     name = "cc_toolchain_x86_def",
     exec_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     target_compatible_with = [
         "//build/bazel/platforms/arch:x86",
         "//build/bazel/platforms/os:android",
     ],
     toolchain = ":cc_toolchain_x86",
     toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
 )

 # arm64 toolchain definition.
 android_cc_toolchain(
     name = "cc_toolchain_arm64",
     clang_version = ":clang",
     clang_version_directory = DEFAULT_VERSION,
     libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_arm64"],
     linker_flags = [
         # Obtained from build/soong/rust/config/arm64_device.go
         "-Wl,--icf=safe",
         "-Wl,-z,max-page-size=4096",
         "-Wl,--execute-only",
         "-Wl,-z,separate-code",
     ],
     target_flags = [
         "--target=aarch64-linux-android10000",
         "-march=armv8-a",
     ],
     toolchain_identifier = "arm64-toolchain",
 )

 toolchain(
     name = "cc_toolchain_arm64_def",
     exec_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     target_compatible_with = [
         "//build/bazel/platforms/arch:arm64",
         "//build/bazel/platforms/os:android",
     ],
     toolchain = ":cc_toolchain_arm64",
     toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
 )

 # arm32 toolchain definition.
 android_cc_toolchain(
     name = "cc_toolchain_arm32",
     clang_version = ":clang",
     clang_version_directory = DEFAULT_VERSION,
     libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_arm"],
     linker_flags = ["-Wl,-dynamic-linker,/system/bin/linker"] + constants.ArmLldflags,
     target_flags = ["--target=" + constants.ArmClangTriple + "10000"] +
         constants.ArmToolchainClangCflags +
         constants.ArmClangArmv7ANeonCflags +
         constants.ArmClangThumbCflags +
         constants.ArmClangCflags,
     toolchain_identifier = "arm-toolchain",
 )

 toolchain(
     name = "cc_toolchain_arm32_def",
     exec_compatible_with = [
         "//build/bazel/platforms/arch:x86_64",
         "//build/bazel/platforms/os:linux",
     ],
     target_compatible_with = [
         "//build/bazel/platforms/arch:arm",
         "//build/bazel/platforms/os:android",
     ],
     toolchain = ":cc_toolchain_arm32",
     toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
 )

 cc_import(
     name = "libclang_rt",
     static_library = select(_LIBCLANG_RT_PREBUILT_MAP),
 )

 [alias(
     name = "llvm-%s" % tool,
     actual = DEFAULT_VERSION + "/bin/llvm-%s" % tool,
     visibility = ["//visibility:public"],
 ) for tool in ["ar", "readelf", "objcopy", "strip"]]

 # Test tools used by Bazel tests.
 filegroup(
     name = "test_tools",
     srcs = [
         DEFAULT_VERSION + "/bin/llvm-readelf",
         DEFAULT_VERSION + "/bin/llvm-nm",
     ],
     visibility = ["//build/bazel/tests:__subpackages__"]
 )
	# NOTE: THIS FILE IS EXPERIMENTAL FOR THE BAZEL MIGRATION AND NOT USED FOR
	# YOUR BUILDS CURRENTLY.
	#
	# It is not yet the source of truth for your build. If you're looking to modify
	# the build file, modify the Android.bp file instead. Do not modify this file
	# unless you have coordinated with the team managing the Soong to Bazel
	# migration.

	package(default_visibility = ["//visibility:public"])

	# Toolchain config
	filegroup(name = "empty")

	load(":cc_toolchain_config.bzl", "android_cc_toolchain", "clang_version")
	load(":clang_version.bzl", "DEFAULT_SHORT_VERSION", "DEFAULT_VERSION")
	load("@soong_injection//cc_toolchain:constants.bzl", "constants")

	# Different clang versions are configured here.
	clang_version(
	name = "clang",
	directory = DEFAULT_VERSION,
	includes = [
	"lib64/clang/%s/include" % DEFAULT_SHORT_VERSION,
	],
	)

	_LIBCLANG_RT_PREFIX = "%s/lib64/clang/%s/lib/linux" % (DEFAULT_VERSION, DEFAULT_SHORT_VERSION)
	_LIBCLANG_RT_PREBUILT_MAP = {
	"//build/bazel/platforms/os_arch:android_arm": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-arm-android.a",
	"//build/bazel/platforms/os_arch:android_arm64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-aarch64-android.a",
	"//build/bazel/platforms/os_arch:android_x86": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-i686-android.a",
	"//build/bazel/platforms/os_arch:android_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64-android.a",
	"//build/bazel/platforms/os_arch:linux_bionic_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64-android.a",
	"//build/bazel/platforms/os_arch:linux_glibc_x86": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-i386.a",
	"//build/bazel/platforms/os_arch:linux_glibc_x86_64": _LIBCLANG_RT_PREFIX + "/libclang_rt.builtins-x86_64.a",
	"//conditions:default": None,
	}

	# x86_64 toolchain definition.
	android_cc_toolchain(
	name = "cc_toolchain_x86_64",
	clang_version = ":clang",
	clang_version_directory = DEFAULT_VERSION,
	libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_x86_64"],
	target_flags = [
	"-m64",
	"-march=x86-64",
	"--target=x86_64-linux-android10000",
	"-mssse3",
	"-msse4",
	"-msse4.1",
	"-msse4.2",
	"-mpopcnt",
	],
	toolchain_identifier = "x86_64-toolchain",
	)

	toolchain(
	name = "cc_toolchain_x86_64_def",
	exec_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	target_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:android",
	],
	toolchain = ":cc_toolchain_x86_64",
	toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
	)

	# Toolchain to compile for the linux host.
	# TODO(b/186628704): automatically generate from Soong.
	android_cc_toolchain(
	name = "cc_toolchain_x86_64_linux_host",
	clang_version = ":clang",
	clang_version_directory = DEFAULT_VERSION,
	libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:linux_glibc_x86_64"],
	target_flags = [
	"-m64",
	"-fdiagnostics-color",
	"-Wa,--noexecstack",
	"-fPIC",
	"-U_FORTIFY_SOURCE",
	"-D_FORTIFY_SOURCE=2",
	"-fstack-protector",
	# Workaround differences in inttypes.h between host and target.
	# See bug 12708004.
	"-D__STDC_FORMAT_MACROS",
	"-D__STDC_CONSTANT_MACROS",
	],
	linker_flags = [
	"-m64",
	"-Wl,-z,noexecstack",
	"-Wl,-z,relro",
	"-Wl,-z,now",
	"-Wl,--no-undefined-version",
	],
	toolchain_identifier = "x86_64-toolchain",
	)

	# TODO(b/181803350): Fix linux toolchain flag set, as the current flags are for android.
	toolchain(
	name = "cc_toolchain_x86_64_linux_host_def",
	exec_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	target_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	toolchain = ":cc_toolchain_x86_64_linux_host",
	toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
	)

	# x86 toolchain definition.
	android_cc_toolchain(
	name = "cc_toolchain_x86",
	clang_version = ":clang",
	clang_version_directory = DEFAULT_VERSION,
	libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_x86"],
	linker_flags = [
	"-Wl,-dynamic-linker,/system/bin/linker",
	],
	target_flags = [
	"--target=i686-linux-android10000",
	"-m32",
	"-march=prescott",
	"-msse3",
	"-mstackrealign",
	],
	toolchain_identifier = "x86-toolchain",
	)

	toolchain(
	name = "cc_toolchain_x86_def",
	exec_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	target_compatible_with = [
	"//build/bazel/platforms/arch:x86",
	"//build/bazel/platforms/os:android",
	],
	toolchain = ":cc_toolchain_x86",
	toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
	)

	# arm64 toolchain definition.
	android_cc_toolchain(
	name = "cc_toolchain_arm64",
	clang_version = ":clang",
	clang_version_directory = DEFAULT_VERSION,
	libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_arm64"],
	linker_flags = [
	# Obtained from build/soong/rust/config/arm64_device.go
	"-Wl,--icf=safe",
	"-Wl,-z,max-page-size=4096",
	"-Wl,--execute-only",
	"-Wl,-z,separate-code",
	],
	target_flags = [
	"--target=aarch64-linux-android10000",
	"-march=armv8-a",
	],
	toolchain_identifier = "arm64-toolchain",
	)

	toolchain(
	name = "cc_toolchain_arm64_def",
	exec_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	target_compatible_with = [
	"//build/bazel/platforms/arch:arm64",
	"//build/bazel/platforms/os:android",
	],
	toolchain = ":cc_toolchain_arm64",
	toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
	)

	# arm32 toolchain definition.
	android_cc_toolchain(
	name = "cc_toolchain_arm32",
	clang_version = ":clang",
	clang_version_directory = DEFAULT_VERSION,
	libclang_rt_builtin = _LIBCLANG_RT_PREBUILT_MAP["//build/bazel/platforms/os_arch:android_arm"],
	linker_flags = ["-Wl,-dynamic-linker,/system/bin/linker"] + constants.ArmLldflags,
	target_flags = ["--target=" + constants.ArmClangTriple + "10000"] +
	constants.ArmToolchainClangCflags +
	constants.ArmClangArmv7ANeonCflags +
	constants.ArmClangThumbCflags +
	constants.ArmClangCflags,
	toolchain_identifier = "arm-toolchain",
	)

	toolchain(
	name = "cc_toolchain_arm32_def",
	exec_compatible_with = [
	"//build/bazel/platforms/arch:x86_64",
	"//build/bazel/platforms/os:linux",
	],
	target_compatible_with = [
	"//build/bazel/platforms/arch:arm",
	"//build/bazel/platforms/os:android",
	],
	toolchain = ":cc_toolchain_arm32",
	toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
	)

	cc_import(
	name = "libclang_rt",
	static_library = select(_LIBCLANG_RT_PREBUILT_MAP),
	)

	[alias(
	name = "llvm-%s" % tool,
	actual = DEFAULT_VERSION + "/bin/llvm-%s" % tool,
	visibility = ["//visibility:public"],
	) for tool in ["ar", "readelf", "objcopy", "strip"]]

	# Test tools used by Bazel tests.
	filegroup(
	name = "test_tools",
	srcs = [
	DEFAULT_VERSION + "/bin/llvm-readelf",
	DEFAULT_VERSION + "/bin/llvm-nm",
	],
	visibility = ["//build/bazel/tests:__subpackages__"]
	)