ALSA_REQUIRED=1.0.0

  ALSA_MODULES="alsa >= $ALSA_REQUIRED"

  succeeded=no

  # Extract the first word of "pkg-config", so it can be a program name with args.

set dummy pkg-config; ac_word=$2

{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5

$as_echo_n "checking for $ac_word... " >&6; }

if ${ac_cv_path_PKG_CONFIG+:} false; then :

  $as_echo_n "(cached) " >&6

else

  case $PKG_CONFIG in

  [\\/]* | ?:[\\/]*)

  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.

  ;;

  *)

  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR

for as_dir in $PATH

do

  IFS=$as_save_IFS

  test -z "$as_dir" && as_dir=.

    for ac_exec_ext in '' $ac_executable_extensions; do

  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then

    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"

    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5

    break 2

  fi

done

  done

IFS=$as_save_IFS

  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"

  ;;

esac

fi

PKG_CONFIG=$ac_cv_path_PKG_CONFIG

if test -n "$PKG_CONFIG"; then

  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5

$as_echo "$PKG_CONFIG" >&6; }

else

  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5

$as_echo "no" >&6; }

fi

  if test "$PKG_CONFIG" = "no" ; then

     HAVE_ALSA=no

  else

     PKG_CONFIG_MIN_VERSION=0.9.0

     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then

        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ALSA_MODULES" >&5

$as_echo_n "checking for $ALSA_MODULES... " >&6; }

        if $PKG_CONFIG --exists "$ALSA_MODULES" 2>&5; then

            { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5

$as_echo "yes" >&6; }

            succeeded=yes

            { $as_echo "$as_me:${as_lineno-$LINENO}: checking ALSA_CFLAGS" >&5

$as_echo_n "checking ALSA_CFLAGS... " >&6; }

            ALSA_CFLAGS=`$PKG_CONFIG --cflags "$ALSA_MODULES"|sed -e 's,///*,/,g'`

            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ALSA_CFLAGS" >&5

$as_echo "$ALSA_CFLAGS" >&6; }

            { $as_echo "$as_me:${as_lineno-$LINENO}: checking ALSA_LIBS" >&5

$as_echo_n "checking ALSA_LIBS... " >&6; }

            ALSA_LIBS=`$PKG_CONFIG --libs "$ALSA_MODULES"|sed -e 's,///*,/,g'`

            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ALSA_LIBS" >&5

$as_echo "$ALSA_LIBS" >&6; }

        else

            { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5

$as_echo "no" >&6; }

            ALSA_CFLAGS=""

            ALSA_LIBS=""

            ## If we have a custom action on failure, don't print errors, but

            ## do set a variable so people can do so.

            ALSA_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$ALSA_MODULES"`

        fi

     else

        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."

        echo "*** See http://www.freedesktop.org/software/pkgconfig"

     fi

  fi

  if test $succeeded = yes; then

     HAVE_ALSA=yes

  else

     HAVE_ALSA=no

  fi

  if test $HAVE_ALSA = yes; then

    SAVE_CFLAGS="$CFLAGS"

    SAVE_LIBS="$LIBS"

    CFLAGS="$ALSA_CFLAGS $CFLAGS"

    LIBS="$ALSA_LIBS $LIBS"

    cat confdefs.h - <<_ACEOF >conftest.$ac_ext

/* end confdefs.h.  */

#include <asoundlib.h>

int

main ()

{

snd_lib_error_set_handler (0);

  ;

  return 0;

}

_ACEOF

if ac_fn_c_try_compile "$LINENO"; then :

  emacs_alsa_normal=yes

else

  emacs_alsa_normal=no

fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext

    if test "$emacs_alsa_normal" != yes; then

      cat confdefs.h - <<_ACEOF >conftest.$ac_ext

/* end confdefs.h.  */

#include <alsa/asoundlib.h>

int

main ()

{

snd_lib_error_set_handler (0);

  ;

  return 0;

}

_ACEOF

if ac_fn_c_try_compile "$LINENO"; then :

  emacs_alsa_subdir=yes

else

  emacs_alsa_subdir=no

fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext

      if test "$emacs_alsa_subdir" != yes; then

        as_fn_error $? "pkg-config found alsa, but it does not compile.  See config.log for error messages." "$LINENO" 5

      fi

      ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"

    fi

    CFLAGS="$SAVE_CFLAGS"

    LIBS="$SAVE_LIBS"

    LIBSOUND="$LIBSOUND $ALSA_LIBS"

    CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"

$as_echo "#define HAVE_ALSA 1" >>confdefs.h

  fi