blob: 844fb7aad14cfd15f2596be85c8e6e600df6d45c [file] [log] [blame]
load(
":features.bzl",
"cc_feature",
"cc_toolchain_import_feature",
"cc_toolchain_sysroot_feature",
)
package(
default_visibility = ["//cc_toolchain:__pkg__"],
)
# System library feature.
cc_toolchain_import_feature(
name = "toolchain_import",
enabled = True,
toolchain_import = "//cc_toolchain:all_imports",
)
cc_toolchain_import_feature(
name = "startup_libs",
enabled = True,
toolchain_import = "@rules_cc_toolchain_config//:startup_libs",
)
# Reduces binary size by putting each block of data and function in their own
# sections, the linker can then garbage collect, discarding unused functions
# and other dead code.
cc_feature(
name = "garbage_collect_symbols",
compiler_flags = [
"-fdata-sections",
"-ffunction-sections",
],
enabled = True,
linker_flags = ["-Wl,--gc-sections"],
)
cc_feature(
name = "warnings",
compiler_flags = [
"-Wall",
"-Wpedantic",
],
)
cc_feature(
name = "errors",
compiler_flags = ["-Werror"],
)
# Override time macros to ensure reproducible builds.
cc_feature(
name = "reproducible",
compiler_flags = [
"-no-canonical-prefixes",
"-Wno-builtin-macro-redefined",
"-D__DATE__=\"redacted\"",
"-D__TIMESTAMP__=\"redacted\"",
"-D__TIME__=\"redacted\"",
],
enabled = True,
)
cc_feature(
name = "language",
c_flags = [
"-xc",
],
cc_flags = [
"-xc++",
],
enabled = True,
)
# Hermetic includes.
cc_feature(
name = "hermetic_libraries",
cc_flags = ["-nostdinc++"],
compiler_flags = ["-nostdinc"],
enabled = True,
linker_flags = [
"-nostdlib",
"-nodefaultlibs",
],
)
# Instruments the executable to emit code coverage information.
cc_feature(
name = "coverage",
compiler_flags = [
"--coverage",
"-fprofile-instr-generate",
"-fcoverage-mapping",
],
linker_flags = [
"-fprofile-instr-generate",
"-fcoverage-mapping",
],
)
# Compilation modes.
cc_feature(
name = "opt",
compiler_flags = [
"-O2",
"-flto",
],
linker_flags = ["-flto"],
provides = ["compilation_mode"],
)
cc_feature(
name = "dbg",
compiler_flags = [
"-O0",
"-g3",
],
provides = ["compilation_mode"],
)
cc_feature(
name = "use_lld",
enabled = True,
linker_flags = [
"-fuse-ld=lld",
],
)
cc_feature(
name = "supports_pic",
enabled = False,
)
cc_feature(
name = "position_independent_code",
compiler_flags = [
"-fPIC",
],
enabled = True,
implies = [":supports_pic"],
)
cc_toolchain_sysroot_feature(
name = "sysroot",
enabled = True,
sysroot = "@debian_stretch_amd64_sysroot//:sysroot",
)
cc_feature(
name = "fastbuild",
compiler_flags = ["-O0"],
provides = ["compilation_mode"],
)
# Language features.
CC_VERSIONS = [
"c++11",
"c++14",
"c++17",
"c++20",
]
[cc_feature(
name = cc_version,
cc_flags = [
"-std=" + cc_version,
],
provides = ["cc_standard"],
) for cc_version in CC_VERSIONS]
C_VERSIONS = [
"c89",
"c90",
"c95",
"c99",
"c11",
]
[cc_feature(
name = c_version,
cc_flags = [
"-std=" + c_version,
],
provides = ["c_standard"],
) for c_version in C_VERSIONS]