46 lines
1.0 KiB
Markdown
46 lines
1.0 KiB
Markdown
---
|
||
title: "💪🏻 Detect Musl"
|
||
date: 2022-07-31T16:00:15+03:00
|
||
draft: false
|
||
tags: [linux, c, shell, musl]
|
||
---
|
||
|
||
Пост — чистейшая копипаста с [SoF](https://stackoverflow.com/questions/58177815/how-to-actually-detect-musl-libc).
|
||
|
||
```sh
|
||
#! /bin/sh
|
||
|
||
tmpf=/tmp/musl.log
|
||
|
||
# Detect Musl C library.
|
||
libc=$(ldd /bin/ls | grep 'musl' | head -1 | cut -d ' ' -f1)
|
||
if [ -z $libc ]; then
|
||
# This is not Musl.
|
||
rm -f ${tmpf}
|
||
exit 1
|
||
fi
|
||
$libc >${tmpf} 2>&1
|
||
vstr=$(cat ${tmpf} | grep "Version" | cut -d ' ' -f2)
|
||
|
||
v_major=$(echo $vstr | cut -d '.' -f1)
|
||
v_minor=$(echo $vstr | cut -d '.' -f2)
|
||
v_patch=$(echo $vstr | cut -d '.' -f3)
|
||
|
||
rm -f ${tmpf}
|
||
|
||
echo "-D__MUSL__ -D__MUSL_VER_MAJOR__=${v_major} -D__MUSL_VER_MINOR__=${v_minor} -D__MUSL_VER_PATCH__=${v_patch}"
|
||
```
|
||
|
||
```sh
|
||
$ ./detect-musl.sh
|
||
-D__MUSL__ -D__MUSL_VER_MAJOR__=1 -D__MUSL_VER_MINOR__=1 -D__MUSL_VER_PATCH__=24
|
||
```
|
||
|
||
```sh
|
||
$ /lib/ld-musl-x86_64.so.1
|
||
musl libc (x86_64)
|
||
Version 1.2.3
|
||
Dynamic Program Loader
|
||
Usage: /lib/ld-musl-x86_64.so.1 [options] [--] pathname [args]
|
||
```
|