major_version: "local"
minor_version: ""
default_target_cpu: "same_as_host"

default_toolchain {
  cpu: "roborio"
  toolchain_identifier: "roborio_linux"
}

default_toolchain {
  cpu: "k8"
  toolchain_identifier: "k8_linux"
}

default_toolchain {
  cpu: "armeabi-v7a"
  toolchain_identifier: "stub_armeabi-v7a"
}

default_toolchain {
  cpu: "armhf-debian"
  toolchain_identifier: "clang_linux_armhf"
}

default_toolchain {
  cpu: "cortex-m4f"
  toolchain_identifier: "cortex-m4f"
}

toolchain {
  abi_version: "armeabi-v7a"
  abi_libc_version: "armeabi-v7a"
  builtin_sysroot: ""
  compiler: "compiler"
  host_system_name: "armeabi-v7a"
  needsPic: true
  supports_gold_linker: false
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: false
  supports_start_end_lib: false
  supports_thin_archives: false
  target_libc: "armeabi-v7a"
  target_cpu: "armeabi-v7a"
  target_system_name: "armeabi-v7a"
  toolchain_identifier: "stub_armeabi-v7a"

  tool_path { name: "ar" path: "/bin/false" }
  tool_path { name: "compat-ld" path: "/bin/false" }
  tool_path { name: "cpp" path: "/bin/false" }
  tool_path { name: "dwp" path: "/bin/false" }
  tool_path { name: "gcc" path: "/bin/false" }
  tool_path { name: "gcov" path: "/bin/false" }
  tool_path { name: "ld" path: "/bin/false" }

  tool_path { name: "nm" path: "/bin/false" }
  tool_path { name: "objcopy" path: "/bin/false" }
  tool_path { name: "objdump" path: "/bin/false" }
  tool_path { name: "strip" path: "/bin/false" }
}

toolchain {
  abi_version: "local"
  abi_libc_version: "local"
  builtin_sysroot: ""
  compiler: "clang"
  host_system_name: "local"
  needsPic: true
  supports_gold_linker: false
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: false
  supports_start_end_lib: false
  supports_thin_archives: false
  target_libc: "local"
  target_cpu: "k8"
  target_system_name: "k8"
  toolchain_identifier: "k8_linux"

  # These paths are relative to //tools/cpp.
  tool_path { name: "ar" path: "clang_3p6/x86_64-linux-gnu-ar" }
  tool_path { name: "compat-ld" path: "clang_3p6/x86_64-linux-gnu-ld" }
  tool_path { name: "cpp" path: "clang_3p6/x86_64-linux-gnu-cpp" }
  tool_path { name: "dwp" path: "clang_3p6/x86_64-linux-gnu-dwp" }
  tool_path { name: "gcc" path: "clang_3p6/x86_64-linux-gnu-clang-3.6" }
  tool_path { name: "gcov" path: "clang_3p6/x86_64-linux-gnu-gcov" }
  # C(++) compiles invoke the compiler (as that is the one knowing where
  # to find libraries), but we provide LD so other rules can invoke the linker.
  tool_path { name: "ld" path: "clang_3p6/x86_64-linux-gnu-ld" }
  tool_path { name: "nm" path: "clang_3p6/x86_64-linux-gnu-nm" }
  tool_path { name: "objcopy" path: "clang_3p6/x86_64-linux-gnu-objcopy" }
  objcopy_embed_flag: "-I"
  objcopy_embed_flag: "binary"
  tool_path { name: "objdump" path: "clang_3p6/x86_64-linux-gnu-objdump" }
  tool_path { name: "strip" path: "clang_3p6/x86_64-linux-gnu-strip" }
  linking_mode_flags { mode: DYNAMIC }

  compiler_flag: "--sysroot=external/clang_3p6_repo/"
  compiler_flag: "-nostdinc"
  compiler_flag: "-isystem"
  compiler_flag: "external/clang_3p6_repo/usr/include",
  compiler_flag: "-isystem"
  compiler_flag: "external/clang_3p6_repo/usr/include/x86_64-linux-gnu",
  compiler_flag: "-isystem"
  compiler_flag: "external/clang_3p6_repo/usr/lib/llvm-3.6/lib/clang/3.6.2/include",

  cxx_flag: "-isystem"
  cxx_flag: "external/clang_3p6_repo/usr/include/c++/4.9"
  cxx_flag: "-isystem"
  cxx_flag: "external/clang_3p6_repo/usr/include/x86_64-linux-gnu/c++/4.9"
  cxx_flag: "-isystem"
  cxx_flag: "external/clang_3p6_repo/usr/include/c++/4.9/backward"

  # TODO(bazel-team): In theory, the path here ought to exactly match the path
  # used by gcc. That works because bazel currently doesn't track files at
  # absolute locations and has no remote execution, yet. However, this will need
  # to be fixed, maybe with auto-detection?
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/include/c++/4.9'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/include/x86_64-linux-gnu/c++/4.9'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/include/c++/4.9/backward'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/local/include'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/lib/llvm-3.6/lib/clang/3.6.2/include'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/include/x86_64-linux-gnu'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/include'
  cxx_builtin_include_directory: '%package(@clang_3p6_repo//usr)%/lib/clang/3.6.2/include'

  linker_flag: "-nodefaultlibs"
  linker_flag: "--sysroot=external/clang_3p6_repo/"
  linker_flag: "-lstdc++"
  linker_flag: "-lc"
  linker_flag: "-lgcc"
  linker_flag: "-lgcc_s"
  linker_flag: "-Bexternal/clang_3p6_repo/usr/bin/"
  linker_flag: "-Ltools/cpp/clang_3p6/clang_more_libs"
  linker_flag: "-Lexternal/clang_3p6/lib/x86_64-linux-gnu"
  linker_flag: "-Lexternal/clang_3p6/usr/lib/x86_64-linux-gnu"
  linker_flag: "-Lexternal/clang_3p6/usr/lib/gcc/x86_64-linux-gnu"

  feature {
    name: "opt"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "dbg"
    implies: "all_modes"
    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: "-DAOS_DEBUG=1"
      }
      flag_group {
        flag: "-fno-omit-frame-pointer"
      }
    }
  }

  feature {
    name: "fastbuild"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "all_modes"
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c-compile"
      flag_group {
        flag: "-std=gnu99"
      }
    }
    flag_set {
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      flag_group {
        flag: "-std=gnu++1y"
      }
    }
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c++-link"
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      action: "c-compile"
      flag_group {
        # We always want to compile with -pthread semantics.
        flag: "-pthread"
      }
    }
  }

  # Anticipated future default.
  # This makes GCC and Clang do what we want when called through symlinks.
  unfiltered_cxx_flag: "-no-canonical-prefixes"
  linker_flag: "-no-canonical-prefixes"

  # Things that the code wants defined.
  compiler_flag: "-D__STDC_FORMAT_MACROS"
  compiler_flag: "-D__STDC_CONSTANT_MACROS"
  compiler_flag: "-D__STDC_LIMIT_MACROS"
  compiler_flag: "-D_FILE_OFFSET_BITS=64"
  # TODO(Brian): Rename this or something.
  compiler_flag: "-DAOS_ARCHITECTURE_arm_frc"

  linker_flag: "-fuse-ld=gold"

  # Make C++ compilation deterministic. Use linkstamping instead of these
  # compiler symbols.
  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\""

  # Security hardening on by default.
  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
  # We need to undef it before redefining it as some distributions now have
  # it enabled by default.
  compiler_flag: "-U_FORTIFY_SOURCE"
  compiler_flag: "-D_FORTIFY_SOURCE=1"
  compiler_flag: "-fstack-protector"
  compiler_flag: "-fPIE"
  linker_flag: "-Wl,-z,relro,-z,now"

  # Pretty much everything needs this, including parts of the glibc STL...
  linker_flag: "-lm"

  # Enable coloring even if there's no attached terminal. Bazel removes the
  # escape sequences if --nocolor is specified.
  compiler_flag: "-fcolor-diagnostics"
  compiler_flag: "-fmessage-length=80"
  compiler_flag: "-fmacro-backtrace-limit=0"

  compiler_flag: "-Wall"
  compiler_flag: "-Wextra"
  compiler_flag: "-Wpointer-arith"
  compiler_flag: "-Wstrict-aliasing"
  compiler_flag: "-Wcast-qual"
  compiler_flag: "-Wcast-align"
  compiler_flag: "-Wwrite-strings"
  compiler_flag: "-Wtype-limits"
  compiler_flag: "-Wsign-compare"
  compiler_flag: "-Wformat=2"
  compiler_flag: "-Werror"

  # Keep stack frames for debugging, even in opt mode.
  compiler_flag: "-fno-omit-frame-pointer"

  # Don't use temp files while compiling.
  compiler_flag: "-pipe"

  # Stamp the binary with a unique identifier.
  linker_flag: "-Wl,--build-id=md5"
  linker_flag: "-Wl,--hash-style=gnu"
  linker_flag: "-Wl,--warn-execstack"
  linker_flag: "-Wl,--detect-odr-violations"

  # Enable debug symbols.
  compiler_flag: "-ggdb3"

  compilation_mode_flags {
    mode: OPT

    compiler_flag: "-O2"

    # 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"
  }
  feature {
    name: "pie_for_linking"
    enabled: true
    flag_set {
      action: "c++-link-executable"
      flag_group {
        flag: "-pie"
      }
    }
  }
}

toolchain {
  abi_version: "roborio"
  abi_libc_version: "roborio"
  builtin_sysroot: ""
  compiler: "gcc"
  host_system_name: "roborio"
  needsPic: true
  supports_gold_linker: false
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: false
  supports_start_end_lib: false
  supports_thin_archives: false
  target_libc: "roborio"
  target_cpu: "roborio"
  target_system_name: "roborio"
  toolchain_identifier: "roborio_linux"

  tool_path { name: "ar" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-ar" }
  tool_path { name: "compat-ld" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-ld" }
  tool_path { name: "cpp" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-cpp" }
  tool_path { name: "dwp" path: "/bin/false" }
  tool_path { name: "gcc" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-gcc" }
  tool_path { name: "gcov" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-gcov-4.9" }
  # C(++) compiles invoke the compiler (as that is the one knowing where
  # to find libraries), but we provide LD so other rules can invoke the linker.
  tool_path { name: "ld" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-ld" }
  tool_path { name: "nm" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-nm" }
  tool_path { name: "objcopy" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-objcopy" }
  objcopy_embed_flag: "-I"
  objcopy_embed_flag: "binary"
  tool_path { name: "objdump" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-objdump" }
  tool_path { name: "strip" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-strip" }
  linking_mode_flags { mode: DYNAMIC }

  compiler_flag: "--sysroot=external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi"
  compiler_flag: "-nostdinc"
  compiler_flag: "-isystem"
  compiler_flag: "external/arm_frc_linux_gnueabi_repo/usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include",
  compiler_flag: "-isystem"
  compiler_flag: "external/arm_frc_linux_gnueabi_repo/usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include-fixed"
  compiler_flag: "-isystem"
  compiler_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/usr/include"

  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/include/c++/5.4.0"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/include/c++/5.4.0/arm-frc-linux-gnueabi"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/include/c++/5.4.0/backward"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include-fixed"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/include"
  cxx_flag: "-isystem"
  cxx_flag: "external/arm_frc_linux_gnueabi_repo/usr/arm-frc-linux-gnueabi/usr/include"

  # TODO(bazel-team): In theory, the path here ought to exactly match the path
  # used by gcc. That works because bazel currently doesn't track files at
  # absolute locations and has no remote execution, yet. However, this will need
  # to be fixed, maybe with auto-detection?
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/arm-frc-linux-gnueabi/include)%/c++/5.4.0"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/arm-frc-linux-gnueabi/include)%/c++/5.4.0/arm-frc-linux-gnueabi"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/arm-frc-linux-gnueabi/include)%/c++/5.4.0/backward"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include)%"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/lib/x86_64-linux-gnu/gcc/arm-frc-linux-gnueabi/5.4.0/include-fixed)%"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/arm-frc-linux-gnueabi/include)%"
  cxx_builtin_include_directory: "%package(@arm_frc_linux_gnueabi_repo//usr/arm-frc-linux-gnueabi/usr/include)%"

  linker_flag: "-lstdc++"
  linker_flag: "-Ltools/cpp/arm-frc-linux-gnueabi/libs"

  feature {
    name: "opt"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "dbg"
    implies: "all_modes"
    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: "-DAOS_DEBUG=1"
      }
      flag_group {
        flag: "-fno-omit-frame-pointer"
      }
    }
  }

  feature {
    name: "fastbuild"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "all_modes"
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c-compile"
      flag_group {
        flag: "-std=gnu99"
      }
    }
    flag_set {
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      flag_group {
        flag: "-std=gnu++1y"
      }
    }
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c++-link"
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      action: "c-compile"
      flag_group {
        # We always want to compile with -pthread semantics.
        flag: "-pthread"
      }
    }
  }

  compiler_flag: "-mfpu=neon"
  # TODO(brians): See if it will run with this enabled.
  #compiler_flag: "-mhwdiv=arm,thumb"

  # Anticipated future default.
  # This makes GCC and Clang do what we want when called through symlinks.
  unfiltered_cxx_flag: "-no-canonical-prefixes"
  linker_flag: "-no-canonical-prefixes"

  # Things that the code wants defined.
  compiler_flag: "-D__STDC_FORMAT_MACROS"
  compiler_flag: "-D__STDC_CONSTANT_MACROS"
  compiler_flag: "-D__STDC_LIMIT_MACROS"
  compiler_flag: "-D_FILE_OFFSET_BITS=64"
  # TODO(Brian): Rename this or something.
  compiler_flag: "-DAOS_ARCHITECTURE_arm_frc"

  #linker_flag: "-fuse-ld=gold"

  # Make C++ compilation deterministic. Use linkstamping instead of these
  # compiler symbols.
  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\""

  # Security hardening on by default.
  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
  # We need to undef it before redefining it as some distributions now have
  # it enabled by default.
  compiler_flag: "-U_FORTIFY_SOURCE"
  compiler_flag: "-fstack-protector"
  compiler_flag: "-fPIE"
  linker_flag: "-Wl,-z,relro,-z,now"

  # Pretty much everything needs this, including parts of the glibc STL...
  linker_flag: "-lm"

  # Enable coloring even if there's no attached terminal. Bazel removes the
  # escape sequences if --nocolor is specified.
  compiler_flag: "-fdiagnostics-color=always"

  compiler_flag: "-Wall"
  compiler_flag: "-Wextra"
  compiler_flag: "-Wpointer-arith"
  compiler_flag: "-Wstrict-aliasing"
  compiler_flag: "-Wcast-qual"
  compiler_flag: "-Wcast-align"
  compiler_flag: "-Wwrite-strings"
  compiler_flag: "-Wtype-limits"
  compiler_flag: "-Wsign-compare"
  compiler_flag: "-Wformat=2"
  compiler_flag: "-Werror"
  compiler_flag: "-Wunused-local-typedefs"

  # Keep stack frames for debugging, even in opt mode.
  compiler_flag: "-fno-omit-frame-pointer"
  compiler_flag: "-D__has_feature(x)=0"

  # Don't use temp files while compiling.
  compiler_flag: "-pipe"

  # Have GCC return the exit code from ld.
  linker_flag: "-pass-exit-codes"

  # Stamp the binary with a unique identifier.
  linker_flag: "-Wl,--build-id=md5"
  linker_flag: "-Wl,--hash-style=gnu"
  #linker_flag: "-Wl,--warn-execstack"
  #linker_flag: "-Wl,--detect-odr-violations"

  # Enable debug symbols.
  compiler_flag: "-ggdb3"

  compilation_mode_flags {
    mode: OPT

    compiler_flag: "-O2"

    # Disable assertions
    compiler_flag: "-DNDEBUG"
    compiler_flag: "-D_FORTIFY_SOURCE=1"

    # 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"
  }
  feature {
    name: "pie_for_linking"
    enabled: true
    flag_set {
      action: "c++-link-executable"
      flag_group {
        flag: "-pie"
      }
    }
  }
}

toolchain {
  abi_version: "clang_3.6"
  abi_libc_version: "glibc_2.19"
  builtin_sysroot: ""
  compiler: "clang"
  host_system_name: "linux"
  needsPic: true
  supports_gold_linker: false
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: true
  supports_start_end_lib: false
  supports_thin_archives: true
  target_libc: "glibc_2.19"
  target_cpu: "armhf-debian"
  target_system_name: "arm_a15"
  toolchain_identifier: "clang_linux_armhf"

  tool_path { name: "ar" path: "linaro_linux_gcc/arm-linux-gnueabihf-ar" }
  tool_path { name: "compat-ld" path: "linaro_linux_gcc/arm-linux-gnueabihf-ld" }
  tool_path { name: "cpp" path: "linaro_linux_gcc/clang_bin/clang" }
  tool_path { name: "dwp" path: "linaro_linux_gcc/arm-linux-gnueabihf-dwp" }
  tool_path { name: "gcc" path: "linaro_linux_gcc/clang_bin/clang" }
  tool_path { name: "gcov" path: "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-gcov-4.9" }
  # C(++) compiles invoke the compiler (as that is the one knowing where
  # to find libraries), but we provide LD so other rules can invoke the linker.
  tool_path { name: "ld" path: "linaro_linux_gcc/arm-linux-gnueabihf-ld" }
  tool_path { name: "nm" path: "linaro_linux_gcc/arm-linux-gnueabihf-nm" }
  tool_path { name: "objcopy" path: "linaro_linux_gcc/arm-linux-gnueabihf-objcopy" }
  objcopy_embed_flag: "-I"
  objcopy_embed_flag: "binary"
  tool_path { name: "objdump" path: "linaro_linux_gcc/arm-linux-gnueabihf-objdump" }
  tool_path { name: "strip" path: "linaro_linux_gcc/arm-linux-gnueabihf-strip" }
  linking_mode_flags { mode: DYNAMIC }

  compiler_flag: "-target"
  compiler_flag: "armv7a-arm-linux-gnueabif"
  compiler_flag: "--sysroot=external/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/libc"
  compiler_flag: "-mfloat-abi=hard"
  compiler_flag: "-mfpu=vfpv3-d16"

  compiler_flag: "-nostdinc"
  compiler_flag: "-isystem"
  compiler_flag: "/usr/lib/clang/3.6/include"
  compiler_flag: "-isystem"
  compiler_flag: "external/linaro_linux_gcc_4_9_repo/lib/gcc/arm-linux-gnueabihf/4.9.3/include"
  compiler_flag: "-isystem"
  compiler_flag: "external/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/libc/usr/include"
  compiler_flag: "-isystem"
  compiler_flag: "external/linaro_linux_gcc_4_9_repo/lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed"
  cxx_flag: "-isystem"
  cxx_flag: "external/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/include/c++/4.9.3/arm-linux-gnueabihf"
  cxx_flag: "-isystem"
  cxx_flag: "external/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/include/c++/4.9.3"
  cxx_flag: "-isystem"
  cxx_flag: "external/linaro_linux_gcc_4_9_repo/include/c++/4.9.3/arm-linux-gnueabihf"
  cxx_flag: "-isystem"
  cxx_flag: "external/linaro_linux_gcc_4_9_repo/include/c++/4.9.3"

  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//include)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/libc/usr/include)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/libc/usr/lib/include)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//include)%/c++/4.9.3"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/4.9.3/include)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//lib/gcc/arm-linux-gnueabihf/4.9.3/include)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//lib/gcc/arm-linux-gnueabihf/4.9.3/include-fixed)%"
  cxx_builtin_include_directory: "%package(@linaro_linux_gcc_4_9_repo//arm-linux-gnueabihf/include)%/c++/4.9.3"
  cxx_builtin_include_directory: '/usr/lib/clang/3.6/include'

  linker_flag: "-target"
  linker_flag: "armv7a-arm-linux-gnueabif"
  linker_flag: "--sysroot=external/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/libc"
  linker_flag: "-lstdc++"
  linker_flag: "-Ltools/cpp/linaro_linux_gcc/clang_more_libs"
  linker_flag: "-Lexternal/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/lib"
  linker_flag: "-Lexternal/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/libc/lib"
  linker_flag: "-Lexternal/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/libc/usr/lib"
  linker_flag: "-Bexternal/linaro_linux_gcc_4_9_repo/arm-linux-gnueabihf/bin"
  linker_flag: "-Wl,--dynamic-linker=/lib/ld-linux-armhf.so.3"

  feature {
    name: "opt"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "dbg"
    implies: "all_modes"
    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: "-DAOS_DEBUG=1"
      }
      flag_group {
        flag: "-fno-omit-frame-pointer"
      }
    }
  }

  feature {
    name: "fastbuild"
    implies: "all_modes"
    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: "-DAOS_DEBUG=0"
      }
    }
  }

  feature {
    name: "all_modes"
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c-compile"
      flag_group {
        flag: "-std=gnu99"
      }
    }
    flag_set {
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      flag_group {
        flag: "-std=gnu++1y"
      }
    }
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c++-link"
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      action: "c-compile"
      flag_group {
        # We always want to compile with -pthread semantics.
        flag: "-pthread"
      }
    }
  }

  # Anticipated future default.
  # This makes GCC and Clang do what we want when called through symlinks.
  unfiltered_cxx_flag: "-no-canonical-prefixes"
  linker_flag: "-no-canonical-prefixes"

  # Things that the code wants defined.
  compiler_flag: "-D__STDC_FORMAT_MACROS"
  compiler_flag: "-D__STDC_CONSTANT_MACROS"
  compiler_flag: "-D__STDC_LIMIT_MACROS"
  compiler_flag: "-D_FILE_OFFSET_BITS=64"
  # TODO(Brian): Rename this or something.
  compiler_flag: "-DAOS_ARCHITECTURE_armhf"

  # Make C++ compilation deterministic. Use linkstamping instead of these
  # compiler symbols.
  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\""

  # Security hardening on by default.
  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
  # We need to undef it before redefining it as some distributions now have
  # it enabled by default.
  compiler_flag: "-U_FORTIFY_SOURCE"
  compiler_flag: "-fstack-protector"
  compiler_flag: "-fPIE"
  linker_flag: "-Wl,-z,relro,-z,now"

  # Pretty much everything needs this, including parts of the glibc STL...
  linker_flag: "-lm"

  # Enable coloring even if there's no attached terminal. Bazel removes the
  # escape sequences if --nocolor is specified.
  compiler_flag: "-fdiagnostics-color=always"

  compiler_flag: "-Wall"
  compiler_flag: "-Wextra"
  compiler_flag: "-Wpointer-arith"
  compiler_flag: "-Wstrict-aliasing"
  compiler_flag: "-Wcast-qual"
  compiler_flag: "-Wcast-align"
  compiler_flag: "-Wwrite-strings"
  compiler_flag: "-Wtype-limits"
  compiler_flag: "-Wsign-compare"
  compiler_flag: "-Wformat=2"
  compiler_flag: "-Werror"
  compiler_flag: "-Wunused-local-typedefs"

  # Keep stack frames for debugging, even in opt mode.
  compiler_flag: "-fno-omit-frame-pointer"

  # Don't use temp files while compiling.
  compiler_flag: "-pipe"

  # Stamp the binary with a unique identifier.
  linker_flag: "-Wl,--build-id=md5"
  linker_flag: "-Wl,--hash-style=gnu"
  #linker_flag: "-Wl,--warn-execstack"
  #linker_flag: "-Wl,--detect-odr-violations"

  # Enable debug symbols.
  compiler_flag: "-ggdb3"

  compilation_mode_flags {
    mode: OPT

    compiler_flag: "-O2"

    # Disable assertions
    compiler_flag: "-DNDEBUG"
    compiler_flag: "-D_FORTIFY_SOURCE=1"

    # 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"
  }
  feature {
    name: "pie_for_linking"
    enabled: true
    flag_set {
      action: "c++-link-executable"
      flag_group {
        flag: "-pie"
      }
    }
  }
}

toolchain {
  abi_version: "cortex-m4f"
  abi_libc_version: "cortex-m4f"
  builtin_sysroot: ""
  compiler: "gcc"
  host_system_name: "local"
  needsPic: false
  supports_gold_linker: false
  supports_incremental_linker: false
  supports_fission: false
  supports_interface_shared_objects: false
  supports_normalizing_ar: false
  supports_start_end_lib: false
  supports_thin_archives: false
  target_libc: "cortex-m4f"
  target_cpu: "cortex-m4f"
  target_system_name: "cortex-m4f"
  toolchain_identifier: "cortex-m4f"

  tool_path { name: "ar" path: "/usr/bin/arm-none-eabi-ar" }
  tool_path { name: "compat-ld" path: "/usr/bin/arm-none-eabi-ld" }
  tool_path { name: "cpp" path: "/usr/bin/arm-none-eabi-cpp" }
  tool_path { name: "dwp" path: "/usr/bin/arm-none-eabi-dwp" }
  tool_path { name: "gcc" path: "/usr/bin/arm-none-eabi-gcc" }
  tool_path { name: "gcov" path: "/usr/bin/arm-none-eabi-gcov" }
  # C(++) compiles invoke the compiler (as that is the one knowing where
  # to find libraries), but we provide LD so other rules can invoke the linker.
  tool_path { name: "ld" path: "/usr/bin/arm-none-eabi-ld" }
  tool_path { name: "nm" path: "/usr/bin/arm-none-eabi-nm" }
  tool_path { name: "objcopy" path: "/usr/bin/arm-none-eabi-objcopy" }
  objcopy_embed_flag: "-I"
  objcopy_embed_flag: "binary"
  tool_path { name: "objdump" path: "/usr/bin/arm-none-eabi-objdump" }
  tool_path { name: "strip" path: "/usr/bin/arm-none-eabi-strip" }
  linking_mode_flags { mode: FULLY_STATIC }

  # TODO(bazel-team): In theory, the path here ought to exactly match the path
  # used by gcc. That works because bazel currently doesn't track files at
  # absolute locations and has no remote execution, yet. However, this will need
  # to be fixed, maybe with auto-detection?
  cxx_builtin_include_directory: '/usr/lib/gcc/arm-none-eabi/4.8/include'
  cxx_builtin_include_directory: '/usr/lib/gcc/arm-none-eabi/4.8/include-fixed'
  cxx_builtin_include_directory: '/usr/lib/arm-none-eabi/include'
  cxx_builtin_include_directory: '/usr/include/newlib',

  feature {
    name: "dbg"
    implies: "all_modes"
    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: "-fno-omit-frame-pointer"
      }
    }
  }

  feature {
    name: "opt"
    implies: "all_modes"
  }
  feature {
    name: "fastbuild"
    implies: "all_modes"
  }

  feature {
    name: "all_modes"
    flag_set {
      action: "preprocess-assemble"
      action: "assemble"
      action: "c-compile"
      flag_group {
        flag: "--std=gnu99"
      }
    }
    flag_set {
      action: "c++-compile"
      action: "c++-header-parsing"
      action: "c++-header-preprocessing"
      action: "c++-module-compile"
      flag_group {
        flag: "--std=gnu++11"
        flag: "-fno-exceptions"
        flag: "-fno-rtti"
      }
    }
  }

  # Anticipated future default.
  # This makes GCC and Clang do what we want when called through symlinks.
  unfiltered_cxx_flag: "-no-canonical-prefixes"
  linker_flag: "-no-canonical-prefixes"

  # Things that the code wants defined.
  compiler_flag: "-D__STDC_FORMAT_MACROS"
  compiler_flag: "-D__STDC_CONSTANT_MACROS"
  compiler_flag: "-D__STDC_LIMIT_MACROS"

  # Some identifiers for what MCU we're using.
  compiler_flag: "-D__MK64FX512__"
  compiler_flag: "-DF_CPU=120000000"

  compiler_flag: "-Wl,--gc-sections"

  # Newlib's stdint.h does this, but GCC's freestanding stdint.h doesn't use
  # newlib's so we have to do it manually...
  compiler_flag: "-D__have_long32"

  # Make C++ compilation deterministic. Use linkstamping instead of these
  # compiler symbols.
  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\""

  # Security hardening on by default.
  # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
  # We need to undef it before redefining it as some distributions now have
  # it enabled by default.
  compiler_flag: "-fstack-protector"
  compiler_flag: "-mcpu=cortex-m4"
  compiler_flag: "-mfpu=fpv4-sp-d16"
  compiler_flag: "-mthumb"
  compiler_flag: "-mfloat-abi=hard"
  compiler_flag: "-fno-strict-aliasing"
  linker_flag: "-mcpu=cortex-m4"
  linker_flag: "-mfpu=fpv4-sp-d16"
  linker_flag: "-mthumb"
  linker_flag: "-mfloat-abi=hard"
  linker_flag: "-fno-strict-aliasing"
  linker_flag: "--specs=nano.specs"

  # Pretty much everything needs this, including parts of the glibc STL...
  linker_flag: "-lgcc"
  linker_flag: "-lstdc++"
  linker_flag: "-lm"
  linker_flag: "-lc"
  linker_flag: "-Tmotors/core/mk64fx512.ld"

  compiler_flag: "-fmessage-length=80"
  compiler_flag: "-fmax-errors=20"

  compiler_flag: "-Wall"
  compiler_flag: "-Wextra"
  compiler_flag: "-Wpointer-arith"
  compiler_flag: "-Wcast-qual"
  compiler_flag: "-Wwrite-strings"
  compiler_flag: "-Wtype-limits"
  compiler_flag: "-Wsign-compare"
  compiler_flag: "-Wformat=2"
  compiler_flag: "-Werror"
  compiler_flag: "-Wstrict-aliasing=2"

  # Be annoying about using doubles places we probably didn't mean to, because
  # the FPU only does single-precision.
  compiler_flag: "-Wdouble-promotion"

  # Don't use temp files while compiling.
  compiler_flag: "-pipe"

  # Stamp the binary with a unique identifier.
  # TODO(austin): Put these back in.
  #linker_flag: "-Wl,--build-id=md5"
  #linker_flag: "-Wl,--hash-style=gnu"

  # Enable debug symbols.
  compiler_flag: "-g"

  # Common symbols are weird and not what we want, so just give multiple
  # declaration errors instead.
  compiler_flag: "-fno-common"

  # We're not a hosted environment (no file IO, main is called from our code,
  # etc).
  compiler_flag: "-ffreestanding"
  # However, we still want to optimize things like memcpy.
  compiler_flag: "-fbuiltin"

  compilation_mode_flags {
    mode: OPT

    # Freescale recommends this combination for reducing cycle count.
    # http://www.nxp.com/assets/documents/data/en/application-notes/AN4808.pdf
    compiler_flag: "-O2"
    compiler_flag: "-finline-functions"

    # This is definitely worth it for us. It makes the FPU a lot more useful,
    # especially with complex arithmetic, which matters a lot.
    compiler_flag: "-ffast-math"

    # It seems like this is a good idea, at least for the number crunching code.
    # Might want to look into moving it to copts on specific rules if the code
    # size increase becomes a problem.
    compiler_flag: "-funroll-loops"

    # 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"
  }

  feature {
    name: 'include_paths'
    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 {
        iterate_over: 'quote_include_paths'
        flag: '-iquote'
        flag: '%{quote_include_paths}'
      }
      flag_group {
        iterate_over: 'include_paths'
        flag: '-I%{include_paths}'
      }
      flag_group {
        iterate_over: 'system_include_paths'
        flag: '-I'
        flag: '%{system_include_paths}'
      }
    }
  }
}