1# musl.m4 serial 3
2dnl Copyright (C) 2019-2020 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7# Test for musl libc, despite the musl libc authors don't like it
8# <https://wiki.musl-libc.org/faq.html>
9# <https://lists.gnu.org/archive/html/bug-gnulib/2018-02/msg00079.html>.
10# From Bruno Haible.
11
12AC_DEFUN_ONCE([gl_MUSL_LIBC],
13[
14  AC_REQUIRE([AC_CANONICAL_HOST])
15  case "$host_os" in
16    *-musl*) AC_DEFINE([MUSL_LIBC], [1], [Define to 1 on musl libc.]) ;;
17  esac
18])
19