Tensorflow-2.2.0-rc1 for aarch64

gistfile1.txt

cd output/build/python-tensorflow-2.2.0-rc1

add endof WORKSPACE file

new_local_repository(
        name = "aarch64_compiler",
        path = "/mnt/br/output/host",
        build_file = "aarch64-compiler/aarch64_compiler.BUILD",
)

mkdir -p aarch64-compiler
cd aarch64-compiler
cat BUILD
package(default_visibility = ["//visibility:public"])

cc_toolchain_suite(
  name = "toolchain",
  toolchains = {
	"aarch64|compiler":":cc-compiler-aarch64",
  },
)

filegroup(
    name = "empty",
    srcs = [],
)

cc_toolchain(
    name = "cc-compiler-aarch64",
    all_files = ":aarch64_linux_all_files",
    compiler_files = ":aarch64_linux_all_files",
    cpu = "aarch64",
    dwp_files = ":empty",
    #dynamic_runtime_libs = [":empty"],
    linker_files = ":aarch64_linux_all_files",
    objcopy_files = "aarch64_linux_all_files",
    #static_runtime_libs = [":empty"],
    strip_files = "aarch64_linux_all_files",
    supports_param_files = 1,
)

cat aarch64_compiler.BUILD
package(default_visibility = ['//visibility:public'])

filegroup(
  name = 'gcc',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-gcc',
  ],
)

filegroup(
  name = 'ar',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-ar',
  ],
)

filegroup(
  name = 'ld',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-ld',
  ],
)

filegroup(
  name = 'nm',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-nm',
  ],
)

filegroup(
  name = 'objcopy',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-objcopy',
  ],
)

filegroup(
  name = 'objdump',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-objdump',
  ],
)

filegroup(
  name = 'strip',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-strip',
  ],
)

filegroup(
  name = 'as',
  srcs = [
    'bin/aarch64-buildroot-linux-gnu-as',
  ],
)

filegroup(
  name = 'compiler_pieces',
  srcs = glob([
    'aarch64-buildroot-linux-gnu/**',
    'libexec/**',
    'lib/gcc/aarch64-buildroot-linux-gnu/7.4.0/**',
    'include/**',
  ]),
)

filegroup(
  name = 'compiler_components',
  srcs = [
    ':gcc',
    ':ar',
    ':ld',
    ':nm',
    ':objcopy',
    ':objdump',
    ':strip',
    ':as',
  ],
)

cat CROSSTOOL
major_version: "local"
minor_version: ""
default_target_cpu: "aarch64"

default_toolchain {
  cpu: "aarch64"
  toolchain_identifier: "aarch64-buildroot-linux-gnu"
}

toolchain {
  abi_version: "aarch64"
  abi_libc_version: "aarch64"
  builtin_sysroot: ""
  compiler: "compiler"
  host_system_name: "aarch64"
  needsPic: true
  supports_gold_linker: true
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: false
  supports_start_end_lib: true
  target_libc: "aarch64"
  target_cpu: "aarch64"
  target_system_name: "aarch64"
  toolchain_identifier: "aarch64-buildroot-linux-gnu"

  cxx_flag: "-std=c++11"
  linker_flag: "-lstdc++"
  linker_flag: "-lm"
  linker_flag: "-fuse-ld=gold"
  linker_flag: "-Wl,-no-as-needed"
  linker_flag: "-Wl,-z,relro,-z,now"
  linker_flag: "-pass-exit-codes"

  cxx_builtin_include_directory: "/mnt/br/output/host/aarch64-buildroot-linux-gnu/include/c++/7.4.0/"
  cxx_builtin_include_directory: "/mnt/br/output/host/aarch64-buildroot-linux-gnu/include/c++/7.4.0/backward"
  cxx_builtin_include_directory: "/mnt/br/output/host/aarch64-buildroot-linux-gnu/include/"
  cxx_builtin_include_directory: "/mnt/br/output/host/lib/gcc/aarch64-buildroot-linux-gnu/7.4.0/include"
  cxx_builtin_include_directory: "/mnt/br/output/host/lib/gcc/aarch64-buildroot-linux-gnu/7.4.0/include-fixed"

  objcopy_embed_flag: "-I"
  objcopy_embed_flag: "binary"

  unfiltered_cxx_flag: "-fno-canonical-system-headers"
  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
  compiler_flag: "-U_FORTIFY_SOURCE"
  compiler_flag: "-fstack-protector"
  compiler_flag: "-Wall"
  compiler_flag: "-Wunused-but-set-parameter"
  compiler_flag: "-Wno-free-nonheap-object"
  compiler_flag: "-fno-omit-frame-pointer"

  tool_path { name: "ld" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-ld" }
  tool_path { name: "cpp" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-cpp" }
  tool_path { name: "dwp" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-dwp" }
  tool_path { name: "gcov" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-gcov" }
  tool_path { name: "nm" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-nm" }
  tool_path { name: "objcopy" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-objcopy" }
  tool_path { name: "objdump" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-objdump" }
  tool_path { name: "strip" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-strip" }
  tool_path { name: "gcc" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-gcc" }
  tool_path { name: "ar" path: "/mnt/br/output/host/bin/aarch64-buildroot-linux-gnu-ar" }

  compilation_mode_flags {
    mode: DBG
    # Enable debug symbols.
    compiler_flag: "-g"
  }
  compilation_mode_flags {
    mode: OPT

    # No debug symbols.
    # Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or
    # even generally? However, that can't happen here, as it requires special
    # handling in Bazel.
    compiler_flag: "-g0"

    # Conservative choice for -O
    # -O3 can increase binary size and even slow down the resulting binaries.
    # Profile first and / or use FDO if you need better performance than this.
    compiler_flag: "-O2"
    compiler_flag: "-D_FORTIFY_SOURCE=1"

    # Disable assertions
    compiler_flag: "-DNDEBUG"

    # Removal of unused code and data at link time (can this increase binary size in some cases?).
    compiler_flag: "-ffunction-sections"
    compiler_flag: "-fdata-sections"
    linker_flag: "-Wl,--gc-sections"
  }
  linking_mode_flags { mode: DYNAMIC }

    feature {
      name: 'coverage'
      provides: 'profile'
      flag_set {
        action: 'preprocess-assemble'
        action: 'c-compile'
        action: 'c++-compile'
        action: 'c++-header-parsing'
        action: 'c++-header-preprocessing'
        action: 'c++-module-compile'
        flag_group {
        flag: '-fprofile-arcs'
        flag: '-ftest-coverage'
        }
      }

      flag_set {
        action: 'c++-link-interface-dynamic-library'
        action: 'c++-link-dynamic-library'
        action: 'c++-link-executable'
        flag_group {
        flag: '-lgcov'
        }
      }
    }

}