openeuler/musl repository overview

⁠Quick reference

• The official musl docker image.

• Maintained by: openEuler CloudNative SIG⁠.

• Where to get help: openEuler CloudNative SIG⁠, openEuler⁠.

⁠musl | openEuler

Current musl docker images are built on the openEuler⁠. This repository is free to use and exempted from per-user rate limits.

musl is an implementation of the C standard library built on top of the Linux system call API, including interfaces defined in the base language standard, POSIX, and widely agreed-upon extensions. musl is lightweight, fast, simple, free, and strives to be correct in the sense of standards-conformance and safety.

Learn more about musl on musl Website⁠⁠.

⁠Supported tags and respective Dockerfile links

The tag of each musl docker image is consist of the version of musl and the version of basic image. The details are as follows

⁠Usage

In this usage, users can select the corresponding {Tag} based on their requirements.

• Pull the openeuler/musl image from docker

  docker pull openeuler/musl:{Tag}
  

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• Run with an interactive shell

  You can start the container with an interactive shell to run your own code using musl.

  docker run -it --rm openeuler/musl:{Tag} bash
  

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• Write a Test Program (test.c)

  Create a file named test.c with the following content:

  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  
  int main() {
      printf("Hello, musl! (PID: %d)\n", getpid());
      
      // Test memory allocation (musl's malloc implementation)
      int *arr = malloc(10 * sizeof(int));
      if (!arr) {
          perror("malloc failed");
          return 1;
      }
      free(arr);
  
      // Detect C library
      #ifdef __GLIBC__
          printf("C library: glibc\n");
      #else
          printf("C library: musl\n");
      #endif
  
      return 0;
  }
  

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• Compilation Methods

  Static Compilation

  musl-gcc -static test.c -o static_app
  ./static_app
  

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  Output:

  Hello, musl! (PID: 147)
  C library: musl
  

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⁠Question and answering

If you have any questions or want to use some special features, please submit an issue or a pull request on openeuler-docker-images⁠.