configure.ac: fix build without dlfcn.h

Fix the following static build failure (i.e. without dlfcn.h) raised
since version 1.2.7 and
44d3e8aa44:

pre-processor.c:28:10: fatal error: dlfcn.h: No such file or directory
   28 | #include <dlfcn.h>
      |          ^~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/1173a1ee28a58ce565a3274f35e868c35bb2e04e

Fixes: https://github.com/alsa-project/alsa-utils/pull/165
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Fabrice Fontaine 2022-08-14 20:31:30 +02:00 committed by Jaroslav Kysela
parent c57391dd26
commit e3d30315ff

View file

@ -27,6 +27,9 @@ AC_CHECK_FUNC([snd_ctl_elem_add_enumerated],
, [AC_ERROR([No user enum control support in alsa-lib])]) , [AC_ERROR([No user enum control support in alsa-lib])])
fi fi
AC_CHECK_HEADERS([dlfcn.h])
dnl Check components dnl Check components
AC_CHECK_HEADERS([alsa/pcm.h], [have_pcm="yes"], [have_pcm="no"], AC_CHECK_HEADERS([alsa/pcm.h], [have_pcm="yes"], [have_pcm="no"],
[#include <alsa/asoundlib.h>]) [#include <alsa/asoundlib.h>])
@ -74,7 +77,7 @@ AM_CONDITIONAL(HAVE_MIXER, test "$have_mixer" = "yes")
AM_CONDITIONAL(HAVE_RAWMIDI, test "$have_rawmidi" = "yes") AM_CONDITIONAL(HAVE_RAWMIDI, test "$have_rawmidi" = "yes")
AM_CONDITIONAL(HAVE_SEQ, test "$have_seq" = "yes") AM_CONDITIONAL(HAVE_SEQ, test "$have_seq" = "yes")
AM_CONDITIONAL(HAVE_UCM, test "$have_ucm" = "yes") AM_CONDITIONAL(HAVE_UCM, test "$have_ucm" = "yes")
AM_CONDITIONAL(HAVE_TOPOLOGY, test "$have_topology" = "yes") AM_CONDITIONAL(HAVE_TOPOLOGY, test "$have_topology" = "yes" -a "$ac_cv_header_dlfcn_h" = "yes")
AM_CONDITIONAL(HAVE_SAMPLERATE, test "$have_samplerate" = "yes") AM_CONDITIONAL(HAVE_SAMPLERATE, test "$have_samplerate" = "yes")
AM_CONDITIONAL(HAVE_FFADO, test "$have_ffado" = "yes") AM_CONDITIONAL(HAVE_FFADO, test "$have_ffado" = "yes")