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annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/share/aclocal/alsa.m4 @ 68:5028fdace37b

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 16:23:26 -0400
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jpayne@68 1 dnl Configure Paths for Alsa
jpayne@68 2 dnl Some modifications by Richard Boulton <richard-alsa@tartarus.org>
jpayne@68 3 dnl Christopher Lansdown <lansdoct@cs.alfred.edu>
jpayne@68 4 dnl Jaroslav Kysela <perex@perex.cz>
jpayne@68 5 dnl Last modification: $Id: alsa.m4,v 1.24 2004/09/15 18:48:07 tiwai Exp $
jpayne@68 6 dnl
jpayne@68 7 dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
jpayne@68 8 dnl Test for libasound, and define ALSA_CFLAGS, ALSA_LIBS and
jpayne@68 9 dnl ALSA_TOPOLOGY_LIBS as appropriate.
jpayne@68 10 dnl
jpayne@68 11 dnl enables arguments --with-alsa-prefix=
jpayne@68 12 dnl --with-alsa-inc-prefix=
jpayne@68 13 dnl --disable-alsatest
jpayne@68 14 dnl
jpayne@68 15 dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified,
jpayne@68 16 dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result.
jpayne@68 17 dnl
jpayne@68 18
jpayne@68 19 AC_DEFUN([AM_PATH_ALSA],
jpayne@68 20 [dnl Save the original CFLAGS, LDFLAGS, and LIBS
jpayne@68 21 alsa_save_CFLAGS="$CFLAGS"
jpayne@68 22 alsa_save_LDFLAGS="$LDFLAGS"
jpayne@68 23 alsa_save_LIBS="$LIBS"
jpayne@68 24 alsa_found=yes
jpayne@68 25 alsa_topology_found=no
jpayne@68 26
jpayne@68 27 dnl
jpayne@68 28 dnl Get the cflags and libraries for alsa
jpayne@68 29 dnl
jpayne@68 30 AC_ARG_WITH(alsa-prefix,
jpayne@68 31 AS_HELP_STRING([--with-alsa-prefix=PFX], [Prefix where Alsa library is installed(optional)]),
jpayne@68 32 [alsa_prefix="$withval"], [alsa_prefix=""])
jpayne@68 33
jpayne@68 34 AC_ARG_WITH(alsa-inc-prefix,
jpayne@68 35 AS_HELP_STRING([--with-alsa-inc-prefix=PFX], [Prefix where include libraries are (optional)]),
jpayne@68 36 [alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])
jpayne@68 37
jpayne@68 38 AC_ARG_ENABLE(alsa-topology,
jpayne@68 39 AS_HELP_STRING([--enable-alsatopology], [Force to use the Alsa topology library]),
jpayne@68 40 [enable_atopology="$enableval"],
jpayne@68 41 [enable_atopology=no])
jpayne@68 42
jpayne@68 43 AC_ARG_ENABLE(alsatest,
jpayne@68 44 AS_HELP_STRING([--disable-alsatest], [Do not try to compile and run a test Alsa program]),
jpayne@68 45 [enable_alsatest="$enableval"],
jpayne@68 46 [enable_alsatest=yes])
jpayne@68 47
jpayne@68 48 dnl Add any special include directories
jpayne@68 49 AC_MSG_CHECKING(for ALSA CFLAGS)
jpayne@68 50 if test "$alsa_inc_prefix" != "" ; then
jpayne@68 51 ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix"
jpayne@68 52 CFLAGS="$CFLAGS -I$alsa_inc_prefix"
jpayne@68 53 fi
jpayne@68 54 AC_MSG_RESULT($ALSA_CFLAGS)
jpayne@68 55
jpayne@68 56 AC_CHECK_LIB(c, dlopen, LIBDL="", [AC_CHECK_LIB(dl, dlopen, LIBDL="-ldl")])
jpayne@68 57
jpayne@68 58 dnl add any special lib dirs
jpayne@68 59 AC_MSG_CHECKING(for ALSA LDFLAGS)
jpayne@68 60 if test "$alsa_prefix" != "" ; then
jpayne@68 61 ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix"
jpayne@68 62 LDFLAGS="$LDFLAGS $ALSA_LIBS"
jpayne@68 63 fi
jpayne@68 64
jpayne@68 65 dnl add the alsa library
jpayne@68 66 ALSA_LIBS="$ALSA_LIBS -lasound -lm $LIBDL -lpthread"
jpayne@68 67 LIBS="$ALSA_LIBS $LIBS"
jpayne@68 68 AC_MSG_RESULT($ALSA_LIBS)
jpayne@68 69
jpayne@68 70 dnl Check for a working version of libasound that is of the right version.
jpayne@68 71 if test "x$enable_alsatest" = "xyes"; then
jpayne@68 72
jpayne@68 73 AC_MSG_CHECKING([required libasound headers version])
jpayne@68 74 min_alsa_version=ifelse([$1], , 0.1.1, $1)
jpayne@68 75 no_alsa=""
jpayne@68 76 alsa_min_major_version=`echo $min_alsa_version | \
jpayne@68 77 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
jpayne@68 78 alsa_min_minor_version=`echo $min_alsa_version | \
jpayne@68 79 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
jpayne@68 80 alsa_min_micro_version=`echo $min_alsa_version | \
jpayne@68 81 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
jpayne@68 82 AC_MSG_RESULT($alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version)
jpayne@68 83
jpayne@68 84 AC_LANG_SAVE
jpayne@68 85 AC_LANG_C
jpayne@68 86 AC_MSG_CHECKING([for libasound headers version >= $alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version ($min_alsa_version)])
jpayne@68 87 AC_TRY_COMPILE([
jpayne@68 88 #include <alsa/asoundlib.h>
jpayne@68 89 ], [
jpayne@68 90 /* ensure backward compatibility */
jpayne@68 91 #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
jpayne@68 92 #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
jpayne@68 93 #endif
jpayne@68 94 #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
jpayne@68 95 #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
jpayne@68 96 #endif
jpayne@68 97 #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
jpayne@68 98 #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
jpayne@68 99 #endif
jpayne@68 100
jpayne@68 101 # if(SND_LIB_MAJOR > $alsa_min_major_version)
jpayne@68 102 exit(0);
jpayne@68 103 # else
jpayne@68 104 # if(SND_LIB_MAJOR < $alsa_min_major_version)
jpayne@68 105 # error not present
jpayne@68 106 # endif
jpayne@68 107
jpayne@68 108 # if(SND_LIB_MINOR > $alsa_min_minor_version)
jpayne@68 109 exit(0);
jpayne@68 110 # else
jpayne@68 111 # if(SND_LIB_MINOR < $alsa_min_minor_version)
jpayne@68 112 # error not present
jpayne@68 113 # endif
jpayne@68 114
jpayne@68 115 # if(SND_LIB_SUBMINOR < $alsa_min_micro_version)
jpayne@68 116 # error not present
jpayne@68 117 # endif
jpayne@68 118 # endif
jpayne@68 119 # endif
jpayne@68 120 exit(0);
jpayne@68 121 ],
jpayne@68 122 [AC_MSG_RESULT(found.)],
jpayne@68 123 [AC_MSG_RESULT(not present.)
jpayne@68 124 ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)])
jpayne@68 125 alsa_found=no]
jpayne@68 126 )
jpayne@68 127 AC_LANG_RESTORE
jpayne@68 128
jpayne@68 129 AC_LANG_SAVE
jpayne@68 130 AC_LANG_C
jpayne@68 131 AC_MSG_CHECKING([for libatopology (sound headers version > 1.1.9)])
jpayne@68 132 AC_TRY_COMPILE([
jpayne@68 133 #include <alsa/asoundlib.h>
jpayne@68 134 #include <alsa/topology.h>
jpayne@68 135 ], [
jpayne@68 136 /* ensure backward compatibility */
jpayne@68 137 #if !defined(SND_LIB_VERSION)
jpayne@68 138 #define SND_LIB_VERSION 0
jpayne@68 139 #endif
jpayne@68 140 #if SND_LIB_VERSION > 0x00010109
jpayne@68 141 exit(0);
jpayne@68 142 #else
jpayne@68 143 # error not present
jpayne@68 144 #endif
jpayne@68 145 exit(0);
jpayne@68 146 ],
jpayne@68 147 [AC_MSG_RESULT(yes)
jpayne@68 148 enable_atopology="yes"],
jpayne@68 149 [AC_MSG_RESULT(no)]
jpayne@68 150 )
jpayne@68 151 AC_LANG_RESTORE
jpayne@68 152
jpayne@68 153 fi
jpayne@68 154
jpayne@68 155 dnl Now that we know that we have the right version, let's see if we have the library and not just the headers.
jpayne@68 156 if test "x$enable_alsatest" = "xyes"; then
jpayne@68 157 AC_CHECK_LIB([asound], [snd_ctl_open],,
jpayne@68 158 [ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)])
jpayne@68 159 alsa_found=no]
jpayne@68 160 )
jpayne@68 161 if test "x$enable_atopology" = "xyes"; then
jpayne@68 162 alsa_topology_found=yes
jpayne@68 163 alsa_save_LIBS2="$LIBS"
jpayne@68 164 AC_CHECK_LIB([atopology], [snd_tplg_new],,
jpayne@68 165 [ifelse([$3], , [AC_MSG_ERROR(No linkable libatopology was found.)])
jpayne@68 166 alsa_topology_found=no,
jpayne@68 167 ]
jpayne@68 168 )
jpayne@68 169 LIBS="$alsa_save_LIBS2"
jpayne@68 170 fi
jpayne@68 171 else
jpayne@68 172 if test "x$enable_atopology" = "xyes"; then
jpayne@68 173 alsa_topology_found=yes
jpayne@68 174 fi
jpayne@68 175 fi
jpayne@68 176
jpayne@68 177 if test "x$alsa_found" = "xyes" ; then
jpayne@68 178 ifelse([$2], , :, [$2])
jpayne@68 179 LIBS=`echo $LIBS | sed 's/-lasound//g'`
jpayne@68 180 LIBS=`echo $LIBS | sed 's/ //'`
jpayne@68 181 LIBS="-lasound $LIBS"
jpayne@68 182 fi
jpayne@68 183 if test "x$alsa_found" = "xno" ; then
jpayne@68 184 ifelse([$3], , :, [$3])
jpayne@68 185 CFLAGS="$alsa_save_CFLAGS"
jpayne@68 186 LDFLAGS="$alsa_save_LDFLAGS"
jpayne@68 187 LIBS="$alsa_save_LIBS"
jpayne@68 188 ALSA_CFLAGS=""
jpayne@68 189 ALSA_LIBS=""
jpayne@68 190 ALSA_TOPOLOGY_LIBS=""
jpayne@68 191 fi
jpayne@68 192
jpayne@68 193 dnl add the alsa topology library; must be at the end
jpayne@68 194 AC_MSG_CHECKING(for ALSA topology LDFLAGS)
jpayne@68 195 if test "x$alsa_topology_found" = "xyes"; then
jpayne@68 196 ALSA_TOPOLOGY_LIBS="$ALSA_TOPOLOGY_LIBS -latopology"
jpayne@68 197 fi
jpayne@68 198 AC_MSG_RESULT($ALSA_TOPOLOGY_LIBS)
jpayne@68 199
jpayne@68 200 dnl That should be it. Now just export out symbols:
jpayne@68 201 AC_SUBST(ALSA_CFLAGS)
jpayne@68 202 AC_SUBST(ALSA_LIBS)
jpayne@68 203 AC_SUBST(ALSA_TOPOLOGY_LIBS)
jpayne@68 204 ])