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https://github.com/spydr06/bcause
BCause (pronounced "because") is a compiler for the old B programming language (1969) for modern systems.
https://github.com/spydr06/bcause
assembly b bcause bell-labs c c99 compiler hacktoberfest hacktoberfest2023 language libb proglangs-discord programming-language single-pass
Last synced: 4 months ago
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BCause (pronounced "because") is a compiler for the old B programming language (1969) for modern systems.
- Host: GitHub
- URL: https://github.com/spydr06/bcause
- Owner: Spydr06
- License: mit
- Created: 2022-05-26T18:35:32.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2023-09-01T19:49:34.000Z (over 1 year ago)
- Last Synced: 2024-10-12T17:21:06.344Z (4 months ago)
- Topics: assembly, b, bcause, bell-labs, c, c99, compiler, hacktoberfest, hacktoberfest2023, language, libb, proglangs-discord, programming-language, single-pass
- Language: C
- Homepage:
- Size: 58.6 KB
- Stars: 51
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# BCause - B compiler for modern systems
**BCause** is a compiler for the **B** programming language, developed by *Ken Thompson* and *Dennis Ritchie* at *Bell Labs* in *1969*, later getting replaced by **C**. BCause is written in C99 and relies on a minimal set of dependencies, namely `libc` and the GNU binutils.
This repository also includes a `libb.a` implementation, B's standard library. It requires zero dependencies, not even libc.
BCause is implemented as a small single-pass compiler in ~2000 lines of pure C99 code. Therefore, it features small compile times with a very low memory footprint.
### Current Status
- [x] global variables
- [x] functions
- [x] `auto` & `extrn` variables
- [x] control flow statements
- [x] expressions
- [x] `libb.a` standard library
- [ ] optimization
- [ ] nicer error messages
### Compatibility
Due to BCause's simplicity, only **`gnu-linux-x86_64`**-systems are supported.
- If your system can run *GNU-`make`*, *GNU-`ld`* and *GNU-`as`*, BCause itself should be able to work.
- Because of the reliance on system-calls `libb.a` has to be implemented for each system separately.
> **Note**
> Feel free to submit pull requests to provide more OS support and fix bugs.
### Installation
To install BCause, first clone this repository:
```console
$ git clone https://github.com/spydr06/bcause.git
$ cd ./bcause
```
Then, build the project:
```console
$ make
```
To install BCause on your computer globally, use:
```console
# make install
```
> **Warning**
> this requires root privileges and modifies system files
### Usage
To compile a B source file (`.b`), use:
```console
$ bcause
```
To get help, type:
```console
$ bcause --help
```
### Licensing
BCause is licensed under the MIT License. See `LICENSE` in this repository for further information.
### References
- [Bell Labs User's Reference to B](https://www.bell-labs.com/usr/dmr/www/kbman.pdf) by Ken Thompson (Jan. 7, 1972)
- Wikipedia entry: [B (programming language)](https://en.wikipedia.org/wiki/B_(programming_language))