C++ argument parser library
This project builds and defines the build2 package for args, which is a simple, small, flexible, single-header C++11 argument parsing library.

Usage
Make sure to add the stable section of the cppget.org
repository to your project's repositories.manifest
to be able to fetch this package.
:
role: prerequisite
location: https://pkg.cppget.org/1/stable
# trust: ...
If the stable section of cppget.org
is not an option then add this Git repository itself instead as a prerequisite.
:
role: prerequisite
location: https://github.com/build2-packaging/args.git
Add the respective dependency in your project's manifest
file to make the package available for import.
depends: args ^6.4.7
The library can be imported by the following declaration in a buildfile
.
import args = args%lib{args}
Configuration
There are no configuration options available.
Issues
Currently, there are no known issues.
Contributing
Thank you in advance for your help and contribution to keep this package up-to-date.
Please, file an issue on GitHub for questions, bug reports, or to recommend updating the package version.
If you're making a pull request to fix bugs or update the package version yourself, refer to the build2
Packaging Guidelines.
Tests
Reviews
Builds
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x86_64-linux-gnu |
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linux_fedora_40-gcc_14-bindist |
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2025-09-13 11:52:06 UTC (01 21:35:30 days ago) |
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2025-09-13 11:19:23 UTC (01 22:08:13 days ago) |
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2025-09-13 11:19:13 UTC (01 22:08:23 days ago) |
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2025-09-13 11:19:05 UTC (01 22:08:31 days ago) |
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2025-09-13 11:19:02 UTC (01 22:08:33 days ago) |
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2025-09-13 11:18:26 UTC (01 22:09:09 days ago) |
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public-0.17.0 |
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windows_10-msvc_17.10-O2 |
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2025-09-13 11:18:25 UTC (01 22:09:11 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-gcc_14-ndebug_O3 |
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2025-09-13 11:18:16 UTC (01 22:09:20 days ago) |
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public-0.17.0 |
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x86_64-microsoft-win32-msvc14.3 |
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windows_10-msvc_17.8 |
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2025-09-13 11:18:09 UTC (01 22:09:27 days ago) |
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public-0.17.0 |
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x86_64-microsoft-win32-msvc14.3 |
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windows_10-clang_18_llvm_msvc_17.10-O2 |
timestamp |
2025-09-13 11:18:05 UTC (01 22:09:31 days ago) |
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toolchain |
public-0.17.0 |
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x86_64-microsoft-win32-msvc14.3 |
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windows_10-clang_18_llvm_msvc_17.10 |
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2025-09-13 11:17:54 UTC (01 22:09:41 days ago) |
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public-0.17.0 |
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x86_64-microsoft-win32-msvc14.3 |
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windows_10-msvc_17.10 |
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2025-09-13 11:17:50 UTC (01 22:09:45 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-gcc_14-O3 |
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2025-09-13 11:17:27 UTC (01 22:10:09 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-gcc_12-bindist |
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2025-09-13 11:17:10 UTC (01 22:10:26 days ago) |
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public-0.17.0 |
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x86_64-microsoft-win32-msvc14.3 |
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windows_10-clang_17_msvc_msvc_17.10 |
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2025-09-13 11:17:06 UTC (01 22:10:30 days ago) |
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public-0.17.0 |
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x86_64-freebsd13.3 |
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public-0.17.0 |
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2025-09-13 11:16:44 UTC (01 22:10:52 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-gcc_14 |
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2025-09-13 11:16:41 UTC (01 22:10:55 days ago) |
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public-0.17.0 |
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freebsd_14-clang_18-static_O3 |
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2025-09-13 11:16:35 UTC (01 22:11:01 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-clang_17_libc++ |
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2025-09-13 11:16:06 UTC (01 22:11:30 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-gcc_13.1 |
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2025-09-13 11:16:05 UTC (01 22:11:30 days ago) |
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public-0.17.0 |
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x86_64-freebsd14.1 |
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freebsd_14-clang_18 |
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2025-09-13 11:15:31 UTC (01 22:12:04 days ago) |
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linux_debian_12-clang_17 |
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2025-09-13 11:15:17 UTC (01 22:12:19 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-clang_18_libc++-static_O3 |
timestamp |
2025-09-13 11:00:56 UTC (01 22:26:40 days ago) |
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public-0.17.0 |
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linux_debian_12-clang_18_libc++-O3 |
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2025-09-13 11:00:53 UTC (01 22:26:43 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-clang_18_libc++ |
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2025-09-13 11:00:22 UTC (01 22:27:14 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-clang_18-static_O3 |
timestamp |
2025-09-13 11:00:18 UTC (01 22:27:17 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-clang_18-O3 |
timestamp |
2025-09-13 10:59:47 UTC (01 22:27:48 days ago) |
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toolchain |
public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-clang_18 |
timestamp |
2025-09-13 10:59:44 UTC (01 22:27:52 days ago) |
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public-0.17.0 |
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x86_64-freebsd14.1 |
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freebsd_14-clang_18-O3 |
timestamp |
2025-09-13 10:49:54 UTC (01 22:37:42 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-gcc_13 |
timestamp |
2025-09-13 10:18:23 UTC (01 23:09:13 days ago) |
result |
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toolchain |
public-0.17.0 |
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aarch64-linux-gnu |
tgt config |
linux_debian_12-clang_17_libc++ |
timestamp |
2025-09-13 10:18:06 UTC (01 23:09:30 days ago) |
result |
success | log | rebuild |
toolchain |
public-0.17.0 |
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aarch64-linux-gnu |
tgt config |
linux_debian_12-clang_17 |
timestamp |
2025-09-13 10:17:47 UTC (01 23:09:49 days ago) |
result |
success | log | rebuild |
toolchain |
public-0.17.0 |
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aarch64-linux-gnu |
tgt config |
linux_debian_12-gcc_14-static_O3 |
timestamp |
2025-09-11 04:23:29 UTC (04 05:04:07 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-gcc_14-ndebug_O3 |
timestamp |
2025-09-11 04:22:54 UTC (04 05:04:42 days ago) |
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public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-gcc_14-O3 |
timestamp |
2025-09-11 04:22:18 UTC (04 05:05:18 days ago) |
result |
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toolchain |
public-0.17.0 |
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aarch64-linux-gnu |
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linux_debian_12-gcc_14 |
timestamp |
2025-09-11 04:21:44 UTC (04 05:05:52 days ago) |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-clang_18 |
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public-0.17.0 |
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linux_debian_12-clang_18-O3 |
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unbuilt |
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public-0.17.0 |
target |
x86_64-linux-gnu |
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linux_debian_12-clang_18-static_O3 |
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unbuilt |
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public-0.17.0 |
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x86_64-linux-gnu |
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linux_debian_12-clang_18_libc++ |
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unbuilt |
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public-0.17.0 |
target |
x86_64-linux-gnu |
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linux_debian_12-clang_18_libc++-O3 |
result |
unbuilt |
toolchain |
public-0.17.0 |
target |
x86_64-linux-gnu |
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linux_debian_12-clang_18_libc++-static_O3 |
result |
unbuilt |
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public-0.17.0 |
target |
x86_64-linux-gnu |
tgt config |
linux_fedora_39-gcc_13-bindist |
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unbuilt |
toolchain |
public-0.17.0 |
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x86_64-apple-darwin22.5.0 |
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macos_13-clang_15.0 |
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unbuilt |
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public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
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macos_14-clang_15.0 |
result |
unbuilt |
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public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
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macos_14-clang_15.0-O3 |
result |
unbuilt |
toolchain |
public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
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macos_14-clang_15.0-static_O3 |
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unbuilt |
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public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
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macos_14-gcc_14_homebrew |
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unbuilt |
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public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
tgt config |
macos_14-gcc_14_homebrew-O3 |
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unbuilt |
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public-0.17.0 |
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x86_64-apple-darwin23.5.0 |
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macos_14-gcc_14_homebrew-static_O3 |
result |
unbuilt |
target |
x86_64-w64-mingw32 |
tgt config |
windows_10-gcc_13.2_mingw_w64 |
result |
excluded (unoptimized compilation with MinGW on Windows gets stuck) |
Changes
* 6.0.0
Change Reader to functor type, breaking change.
Change Reader functor to allow any return type, but specifically need bool-testable return for NOEXCEPT use.
Change List and Map templates into template templates to enforce proper type use and to clean up user template invocations (i.e. `args::ValueFlagList<std::string, std::unordered_set<std::string>>` becomes `args::ValueFlagList<std::string, std::unordered_set>`, also breaking change.
* 5.0.0
Implemented proper subparsers.
Added better C++11 style.
Improved documentation.
* 4.0.0
Changed all wording:
ArgFlag -> ValueFlag
Counter -> CounterFlag
PosArg -> Positional
Argument now solely refers to command line arguments.
Value refers to the argument that flags or positionals can take and store.
Positional is a positional option, which contains a value.
Option refers to flags and positionals, which can contain values.