utils/alsa.m4: include <stdlib.h> for exit()

Clang 16 makes -Wimplicit-function-declaration an error by default
and it's easier to just explicitly include <stdlib.h> rather
than hope the ALSA headers always have it.

Fixes: https://github.com/alsa-project/alsa-lib/pull/278
Signed-off-by: Sam James <sam@gentoo.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Sam James 2022-10-30 18:06:37 +00:00 committed by Jaroslav Kysela
parent 496c4e031b
commit 1fc1c1b7dc

View file

@ -85,6 +85,7 @@ AC_LANG_PUSH([C])
AC_MSG_CHECKING([for libasound headers version >= $alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version ($min_alsa_version)])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <alsa/asoundlib.h>
#include <stdlib.h>
]], [[
/* ensure backward compatibility */
#if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
@ -130,6 +131,7 @@ AC_MSG_CHECKING([for libatopology (sound headers version > 1.1.9)])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <alsa/asoundlib.h>
#include <alsa/topology.h>
#include <stdlib.h>
]], [[
/* ensure backward compatibility */
#if !defined(SND_LIB_VERSION)