diff options
Diffstat (limited to 'third_party/toolchains/clang6/CROSSTOOL.tpl')
-rw-r--r-- | third_party/toolchains/clang6/CROSSTOOL.tpl | 587 |
1 files changed, 587 insertions, 0 deletions
diff --git a/third_party/toolchains/clang6/CROSSTOOL.tpl b/third_party/toolchains/clang6/CROSSTOOL.tpl new file mode 100644 index 0000000000..6b7e5a8808 --- /dev/null +++ b/third_party/toolchains/clang6/CROSSTOOL.tpl @@ -0,0 +1,587 @@ +major_version: "v1" +minor_version: "llvm:6.0.0" +default_target_cpu: "k8" + +default_toolchain { + cpu: "k8" + toolchain_identifier: "k8-clang-6.0-cxx-4.8-linux-gnu" +} + +toolchain { + compiler: "clang6" # bazel build --compiler=clang6 + target_cpu: "k8" # bazel build --cpu=k8 + target_libc: "GLIBC_2.19" # bazel build --glibc=GLIBC_2.19 + + abi_libc_version: "2.19" + abi_version: "gcc-4.8-cxx11" + builtin_sysroot: "" + cc_target_os: "linux-gnu" + default_python_version: "python2.7" + dynamic_runtimes_filegroup: "dynamic-runtime-libs-k8" + host_system_name: "x86_64-unknown-linux-gnu" + needsPic: true + static_runtimes_filegroup: "static-runtime-libs-k8" + supports_embedded_runtimes: true + supports_fission: true + supports_gold_linker: true + supports_incremental_linker: true + supports_interface_shared_objects: true + supports_normalizing_ar: true + supports_start_end_lib: true + supports_thin_archives: true + target_system_name: "x86_64-unknown-linux-gnu" + toolchain_identifier: "k8-clang-6.0-cxx-4.8-linux-gnu" + + tool_path { name: "ar" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-ar" } + tool_path { name: "as" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-as" } + tool_path { name: "compat-ld" path: "%package(@local_config_clang6//clang6)%/llvm/bin/ld.lld" } + tool_path { name: "cpp" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-cpp" } + tool_path { name: "dwp" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-dwp" } + tool_path { name: "gcc" path: "%package(@local_config_clang6//clang6)%/llvm/bin/clang" } + tool_path { name: "gcov" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-cov" } + tool_path { name: "ld" path: "%package(@local_config_clang6//clang6)%/llvm/bin/ld.lld" } + tool_path { name: "llvm-profdata" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-profdata" } + tool_path { name: "nm" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-nm" } + tool_path { name: "objcopy" path: "%package(@local_config_clang6//clang6)%/llvm/bin/llvm-objcopy" } + tool_path { name: "objdump" path: "%package(@local_config_clang6//clang6)%/sbin/objdump" } + tool_path { name: "strip" path: "%package(@local_config_clang6//clang6)%/sbin/strip" } + + unfiltered_cxx_flag: "-no-canonical-prefixes" + + # 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\"" + + objcopy_embed_flag: "-I" + objcopy_embed_flag: "binary" + + # This action_config makes features flags propagate + # to CC_FLAGS for genrules, and eventually skylark. + action_config { + action_name: "cc-flags-make-variable" + config_name: "cc-flags-make-variable" + } + + # 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" + linker_flag: "-Wl,-z,relro,-z,now" + + # This adds a little bit more durability to our Clang build. + # + # At the moment, this only only be needed for: + # - add_boringssl_s390x.patch: --Wa,--noexecstack + # + # Folks who do maintenance work on TF Bazel Clang should consider + # commenting out these lines, while doing that work, to gain a better + # understanding of what the intersection of support looks like between GCC + # and Clang. Please note that, Bazel does not support + # -Xclang-only / -Xgcc-only. + compiler_flag: "-Wno-unknown-warning-option" + compiler_flag: "-Wno-unused-command-line-argument" + compiler_flag: "-Wno-ignored-optimization-argument" + + #### Common compiler options. #### + compiler_flag: "-D_REENTRANT" + compiler_flag: "-D__STDC_FORMAT_MACROS" + compiler_flag: "-DSUPPRESS_USE_FILE_OFFSET64" + compiler_flag: "-Wall" + compiler_flag: "-Wformat-security" + compiler_flag: "-Wframe-larger-than=16384" + compiler_flag: "-Wno-char-subscripts" + compiler_flag: "-Wno-error=deprecated-declarations" + compiler_flag: "-Wno-uninitialized" + compiler_flag: "-Wno-sign-compare" + compiler_flag: "-Wno-strict-overflow" + compiler_flag: "-Wno-unused-function" + compiler_flag: "-fdiagnostics-show-option" + compiler_flag: "-fmessage-length=0" + compiler_flag: "-fno-exceptions" + compiler_flag: "-fno-omit-frame-pointer" + compiler_flag: "-fno-strict-aliasing" + compiler_flag: "-fno-use-init-array" + compiler_flag: "-funsigned-char" + compiler_flag: "-gmlt" + cxx_flag: "-Wno-deprecated" + cxx_flag: "-Wno-invalid-offsetof" # Needed for protobuf code (2017-11-07) + cxx_flag: "-fshow-overloads=best" + compiler_flag: "-Wthread-safety-analysis" + + # Python extensions unfortunately make this go wild. + compiler_flag: "-Wno-writable-strings" + + # GCC's warning produces too many false positives: + cxx_flag: "-Woverloaded-virtual" + cxx_flag: "-Wnon-virtual-dtor" + + # Enable coloring even if there's no attached terminal. Bazel removes the + # escape sequences if --nocolor is specified. This isn't supported by gcc + # on Ubuntu 14.04. + compiler_flag: "-fcolor-diagnostics" + + # Disable some broken warnings from Clang. + compiler_flag: "-Wno-ambiguous-member-template" + compiler_flag: "-Wno-pointer-sign" + + # These warnings have a low signal to noise ratio. + compiler_flag: "-Wno-reserved-user-defined-literal" + compiler_flag: "-Wno-return-type-c-linkage" + compiler_flag: "-Wno-invalid-source-encoding" + + # Per default we switch off any layering related warnings. + compiler_flag: "-Wno-private-header" + + # Clang-specific warnings that we explicitly enable for TensorFlow. Some of + # these aren't on by default, or under -Wall, or are subsets of warnings + # turned off above. + compiler_flag: "-Wfloat-overflow-conversion" + compiler_flag: "-Wfloat-zero-conversion" + compiler_flag: "-Wfor-loop-analysis" + compiler_flag: "-Wgnu-redeclared-enum" + compiler_flag: "-Winfinite-recursion" + compiler_flag: "-Wliteral-conversion" + compiler_flag: "-Wself-assign" + compiler_flag: "-Wstring-conversion" + compiler_flag: "-Wtautological-overlap-compare" + compiler_flag: "-Wunused-comparison" + compiler_flag: "-Wvla" + cxx_flag: "-Wdeprecated-increment-bool" + + # Clang code-generation flags for performance optimization. + compiler_flag: "-faligned-allocation" + compiler_flag: "-fnew-alignment=8" + + # Clang defaults to C99 while GCC defaults to C89. GCC plugins are written in + # C89 and don't have a BUILD rule we could add a copts flag to. + gcc_plugin_compiler_flag: "-std=gnu89" + + compilation_mode_flags { + mode: FASTBUILD + } + + compilation_mode_flags { + mode: DBG + compiler_flag: "-g" + } + + compilation_mode_flags { + mode: OPT + compiler_flag: "-g0" + compiler_flag: "-fdebug-types-section" + compiler_flag: "-DNDEBUG" + compiler_flag: "-fno-split-dwarf-inlining" + compiler_flag: "-Os" + compiler_flag: "-fexperimental-new-pass-manager" + compiler_flag: "-fdebug-info-for-profiling" + compiler_flag: "-ffunction-sections" + compiler_flag: "-fdata-sections" + linker_flag: "-Wl,--gc-sections" + linker_flag: "-Wl,-z,relro,-z,now" + } + + # Features indicating whether this is a host compile or not. Exactly one of + # these will be implicitly provided by bazel. + feature { name: "host" } + feature { name: "nonhost" } + + # Features indicating which compiler will be used for code generation. + feature { + name: "llvm_codegen" + provides: "codegen" + enabled: true + } + + # Features for compilation modes. Exactly one of these will be implicitly + # provided by bazel. + feature { name: "fastbuild" } + feature { name: "dbg" } + feature { name: "opt" } + + # Features controlling the C++ language mode. + feature { + name: "c++11" + provides: "c++std" + flag_set { + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "linkstamp-compile" + flag_group { + flag: "-nostdinc++" + flag: "-std=c++11" + flag: "-Wc++14-extensions" + flag: "-Wc++2a-extensions" + flag: "-Wno-binary-literal" + } + } + } + feature { + name: "c++14" + provides: "c++std" + flag_set { + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "linkstamp-compile" + flag_group { + flag: "-nostdinc++" + flag: "-std=c++14" + flag: "-Wc++11-compat" + flag: "-Wno-c++11-compat-binary-literal" + flag: "-Wc++2a-extensions" + } + } + } + feature { + name: "c++17" + provides: "c++std" + flag_set { + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "linkstamp-compile" + flag_group { + flag: "-nostdinc++" + flag: "-std=c++17" + flag: "-Wc++11-compat" + flag: "-Wno-c++11-compat-binary-literal" + flag: "-Wc++2a-extensions" + } + } + } + feature { + name: "c++2a" + provides: "c++std" + flag_set { + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "linkstamp-compile" + flag_group { + flag: "-nostdinc++" + flag: "-std=c++2a" + flag: "-Wc++11-compat" + flag: "-Wno-c++11-compat-binary-literal" + } + } + } + feature { + name: "c++default" + enabled: true + flag_set { + # Provide the c++11 flags if no standard is selected + with_feature { + not_feature: "c++11" + not_feature: "c++14" + not_feature: "c++17" + not_feature: "c++2a" + } + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "linkstamp-compile" + flag_group { + flag: "-nostdinc++" + flag: "-std=c++11" + flag: "-Wc++14-extensions" + flag: "-Wc++2a-extensions" + flag: "-Wno-binary-literal" + } + } + } + + feature { + name: "use_compiler_rt" + requires { feature: "llvm_codegen" } + # TODO(saugustine): At the moment, "use_compiler_rt" also + # requires "linking_mode_flags { mode: FULLY_STATIC" ... }, + # but that isn't a feature. We should probably convert it. + flag_set { + action: "c++-link" + action: "c++-link-interface-dynamic-library" + action: "c++-link-dynamic-library" + action: "c++-link-executable" + # "link" is a misnomer for these actions. They are really just + # invocations of ar. + #action: "c++-link-pic-static-library" + #action: "c++-link-static-library" + #action: "c++-link-alwayslink-static-library" + #action: "c++-link-pic-static-library" + #action: "c++-link-alwayslink-pic-static-library" + flag_group { + flag: "-rtlib=compiler-rt" + flag: "-lunwind" + } + } + } + + feature { + name: "pie" + flag_set { + action: "assemble" + action: "preprocess-assemble" + action: "c-compile" + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "c++-module-codegen" + action: "cc-flags-make-variable" + action: "lto-backend" + action: "linkstamp-compile" + flag_group { + flag: "-mpie-copy-relocations" + flag: "-fPIE" + } + } + flag_set { + action: "cc-flags-make-variable" + action: "c++-link-executable" + flag_group { + flag: "-pie" + } + } + } + + # Pic must appear after pie, because pic may need to override pie, and bazel + # turns it on selectively. These don't interact with other options. + # + # TODO: In practice, normal vs pic vs pie is a ternary mode. We should + # implement it that way. This will require changes to bazel, which only + # calculates whether or not pic is needed, not pie. + # + # NOTE: Bazel might make this all a moot point. + feature { + name: "pic" + flag_set { + action: "assemble" + action: "preprocess-assemble" + action: "c-compile" + action: "c++-compile" + action: "c++-module-codegen" + action: "c++-module-compile" + action: "linkstamp-compile" + expand_if_all_available: "pic" + flag_group { + flag: "-fPIC" + } + } + } + + feature { + name: "gold" + enabled: true + flag_set { + action: "c++-link-executable" + action: "c++-link-dynamic-library" + action: "c++-link-interface-dynamic-library" + flag_group { + expand_if_none_available: "lto" + flag: "-fuse-ld=gold" + } + } + } + + # This is great if you want linking TensorFlow to take ten minutes. + feature { + name: "lto" + requires { feature: "nonhost" } + flag_set { + action: "c-compile" + action: "c++-compile" + flag_group { + flag: "-flto=thin" + } + } + flag_set { + action: "c++-link-executable" + action: "c++-link-dynamic-library" + action: "c++-link-interface-dynamic-library" + flag_group { + flag: "-flto=thin" + } + } + } + + feature { + name: "parse_headers" + flag_set { + action: "c++-header-parsing" + flag_group { + flag: "-xc++-header" + flag: "-fsyntax-only" + } + } + } + + feature { + name: "preprocess_headers" + flag_set { + action: "c++-header-preprocessing" + flag_group { + flag: "-xc++" + flag: "-E" + } + } + } + + feature { + name: "per_object_debug_info" + flag_set { + action: "c-compile" + action: "c++-compile" + action: "c++-module-codegen" + action: "assemble" + action: "preprocess-assemble" + action: "lto-backend" + flag_group { + flag: "-gsplit-dwarf" + flag: "-ggnu-pubnames" + } + } + flag_set { + action: "c++-link-executable" + action: "c++-link-dynamic-library" + action: "c++-link-interface-dynamic-library" + flag_group { + expand_if_all_available: "is_using_fission" + flag: "-Wl,--gdb-index" + } + } + } + + feature { + name: "xray" + requires { + feature: "llvm_codegen" + feature: "nonhost" + } + flag_set { + action: "c-compile" + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "c++-link-interface-dynamic-library" + action: "c++-link-dynamic-library" + action: "c++-link-executable" + flag_group { + flag: "-fxray-instrument" + } + } + } + + feature { + name: "minimal_ubsan" + requires { feature: "llvm_codegen" } + flag_set { + action: "c-compile" + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "c++-module-codegen" + flag_group { + flag: "-fsanitize=return,returns-nonnull-attribute,vla-bound,unreachable,float-cast-overflow" + flag: "-fsanitize-trap=all" + flag: "-DUNDEFINED_BEHAVIOR_SANITIZER" + } + } + } + + feature { + name: "minimal_ubsan_enabled_by_default" + requires { + feature: "llvm_codegen" + feature: "fastbuild" + } + enabled: true + implies: "minimal_ubsan" + } + + cxx_builtin_include_directory: "%package(@local_config_clang6//clang6)%/llvm/lib/clang/6.0.0/include" + cxx_builtin_include_directory: "/usr/include" + + unfiltered_cxx_flag: "-cxx-isystem" + unfiltered_cxx_flag: "/usr/include/c++/4.8" + unfiltered_cxx_flag: "-cxx-isystem" + unfiltered_cxx_flag: "/usr/include/x86_64-linux-gnu/c++/4.8" + unfiltered_cxx_flag: "-isystem" + unfiltered_cxx_flag: "%package(@local_config_clang6//clang6)%/llvm/lib/clang/6.0.0/include" + unfiltered_cxx_flag: "-isystem" + unfiltered_cxx_flag: "/usr/include/x86_64-linux-gnu" + unfiltered_cxx_flag: "-isystem" + unfiltered_cxx_flag: "/usr/include" + + linker_flag: "-Wl,--build-id=md5" + linker_flag: "-Wl,--fatal-warnings" + linker_flag: "-Wl,--hash-style=gnu" + linker_flag: "-no-canonical-prefixes" + linker_flag: "--target=x86_64-unknown-linux-gnu" + + linker_flag: "-L/usr/lib/gcc/x86_64-linux-gnu/4.8" + + # This is the minimum x86 architecture TensorFlow supports. + compiler_flag: "-DARCH_K8" + compiler_flag: "-m64" + + # These are for Linux. + ld_embed_flag: "-melf_x86_64" + linker_flag: "-Wl,--eh-frame-hdr" + linker_flag: "-Wl,-z,max-page-size=0x1000" + + # Google never uses the stack like a heap, e.g. alloca(), because tcmalloc + # and jemalloc are so fast. However copts=["$(STACK_FRAME_UNLIMITED)"] can be + # specified when that can't be the case. + make_variable { + name: "STACK_FRAME_UNLIMITED" + value: "-Wframe-larger-than=100000000 -Wno-vla" + } + + # These flags are for folks who build C/C++ code inside genrules. + make_variable { + name: "CC_FLAGS" + value: "-no-canonical-prefixes --target=x86_64-unknown-linux-gnu -fno-omit-frame-pointer -fno-tree-vrp -msse3" + } + + feature { + name: "copts" + flag_set { + expand_if_all_available: "copts" + action: "assemble" + action: "preprocess-assemble" + action: "c-compile" + action: "c++-compile" + action: "c++-header-parsing" + action: "c++-header-preprocessing" + action: "c++-module-compile" + action: "c++-module-codegen" + action: "lto-backend" + flag_group { + iterate_over: "copts" + flag: "%{copts}" + } + } + } + + # Please do not statically link libstdc++. This would probably lead to a lot + # of bloat since OpKernels need to use linkstatic=1 because b/27630669 and + # it could cause memory leaks since Python uses dlopen() on our libraries: + # https://stackoverflow.com/a/35015415 + linker_flag: "-lstdc++" + linker_flag: "-lm" + linker_flag: "-lpthread" + linker_flag: "-l:/lib/x86_64-linux-gnu/libc-2.19.so" +} |