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Version: 2.25 (dev)

cc-external

Options for downloaded cc toolchain.

Backend: pants.backend.experimental.cc

Config section: [cc-external]

Basic options​

c_compiler_flags​

--cc-external-c-compiler-flags="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_C_COMPILER_FLAGS
pants.toml
[cc-external]
c_compiler_flags = [
    '<str>',
    '<str>',
    ...,
]
default: 
[
  "-std=c11"
]

Flags passed to the C compiler. These flags are merged with the target-level defines, with the target-level flags taking precedence.

c_definitions​

--cc-external-c-definitions="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_C_DEFINITIONS
pants.toml
[cc-external]
c_definitions = [
    '<str>',
    '<str>',
    ...,
]
default: []

A list of strings to define in the C preprocessor. Will be prefixed by -D at the command line. These defines are merged with the target-level defines, with the target-level definitions taking precedence.

c_executable​

--cc-external-c-executable=<str>
PANTS_CC_EXTERNAL_C_EXECUTABLE
pants.toml
[cc-external]
c_executable = <str>
default:

The relative path to the C compiler binary from the downloaded source. E.g. For the ARM gcc-rm toolchain, this value would be: gcc-arm-none-eabi-10.3-2021.10/bin/arm-none-eabi-gcc

cxx_compiler_flags​

--cc-external-cxx-compiler-flags="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_CXX_COMPILER_FLAGS
pants.toml
[cc-external]
cxx_compiler_flags = [
    '<str>',
    '<str>',
    ...,
]
default: 
[
  "-std=c++11"
]

Flags passed to the C++ compiler. These flags are merged with the target-level defines, with the target-level flags taking precedence.

cxx_definitions​

--cc-external-cxx-definitions="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_CXX_DEFINITIONS
pants.toml
[cc-external]
cxx_definitions = [
    '<str>',
    '<str>',
    ...,
]
default: []

A list of strings to define in the C++ preprocessor. Will be prefixed by -D at the command line. These defines are merged with the target-level defines, with the target-level definitions taking precedence.

cxx_executable​

--cc-external-cxx-executable=<str>
PANTS_CC_EXTERNAL_CXX_EXECUTABLE
pants.toml
[cc-external]
cxx_executable = <str>
default:

The relative path to the C++ compiler binary from the downloaded source. E.g. For the ARM gcc-rm toolchain, this value would be: gcc-arm-none-eabi-10.3-2021.10/bin/arm-none-eabi-g++

include_directories​

--cc-external-include-directories="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_INCLUDE_DIRECTORIES
pants.toml
[cc-external]
include_directories = [
    '<str>',
    '<str>',
    ...,
]
default: []

A list of include directories passed to the compiler. Will be prefixed by -I at the command line. These flags are merged with the target-level includes, with the target-level includes taking precedence.

Advanced options​

known_versions​

--cc-external-known-versions="['<str>', '<str>', ...]"
PANTS_CC_EXTERNAL_KNOWN_VERSIONS
pants.toml
[cc-external]
known_versions = [
    '<str>',
    '<str>',
    ...,
]
default: []

Known versions to verify downloads against.

Each element is a pipe-separated string of version|platform|sha256|length or version|platform|sha256|length|url_override, where:

  • version is the version string
  • platform is one of [linux_arm64,linux_x86_64,macos_arm64,macos_x86_64]
  • sha256 is the 64-character hex representation of the expected sha256 digest of the download file, as emitted by shasum -a 256
  • length is the expected length of the download file in bytes, as emitted by wc -c
  • (Optional) url_override is a specific url to use instead of the normally generated url for this version

E.g., 3.1.2|macos_x86_64|6d0f18cd84b918c7b3edd0203e75569e0c7caecb1367bbbe409b44e28514f5be|42813. and 3.1.2|macos_arm64 |aca5c1da0192e2fd46b7b55ab290a92c5f07309e7b0ebf4e45ba95731ae98291|50926|https://example.mac.org/bin/v3.1.2/mac-aarch64-v3.1.2.tgz.

Values are space-stripped, so pipes can be indented for readability if necessary.

url_platform_mapping​

--cc-external-url-platform-mapping="{'key1': val1, 'key2': val2, ...}"
PANTS_CC_EXTERNAL_URL_PLATFORM_MAPPING
pants.toml
[cc-external.url_platform_mapping]
key1 = val1
key2 = val2
...
default: {}

A dictionary mapping platforms to strings to be used when generating the URL to download the tool.

In --url-template, anytime the {platform} string is used, Pants will determine the current platform, and substitute {platform} with the respective value from your dictionary.

For example, if you define {"macos_x86_64": "apple-darwin", "linux_x86_64": "unknown-linux"}, and run Pants on Linux with an intel architecture, then {platform} will be substituted in the --url-template option with unknown-linux.

url_template​

--cc-external-url-template=<str>
PANTS_CC_EXTERNAL_URL_TEMPLATE
pants.toml
[cc-external]
url_template = <str>
default:

URL to download the tool, either as a single binary file or a compressed file (e.g. zip file). You can change this to point to your own hosted file, e.g. to work with proxies or for access via the filesystem through a file:$abspath URL (e.g. file:/this/is/absolute, possibly by templating the buildroot in a config file).

Use {version} to have the value from --version substituted, and {platform} to have a value from --url-platform-mapping substituted in, depending on the current platform. For example, https://github.com/.../protoc-&#123;version&#125;-&#123;platform&#125;.zip.

use_unsupported_version​

--cc-external-use-unsupported-version=<UnsupportedVersionUsage>
PANTS_CC_EXTERNAL_USE_UNSUPPORTED_VERSION
pants.toml
[cc-external]
use_unsupported_version = <UnsupportedVersionUsage>
one of: error, warning
default: error

What action to take in case the requested version of cc-external is not supported.

Supported cc-external versions: unspecified

version​

--cc-external-version=<str>
PANTS_CC_EXTERNAL_VERSION
pants.toml
[cc-external]
version = <str>
default:

Use this version of cc-external.

Deprecated options​

None

None