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comparison 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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67:0e9998148a16 68:5028fdace37b
1 dnl Configure Paths for Alsa
2 dnl Some modifications by Richard Boulton <richard-alsa@tartarus.org>
3 dnl Christopher Lansdown <lansdoct@cs.alfred.edu>
4 dnl Jaroslav Kysela <perex@perex.cz>
5 dnl Last modification: $Id: alsa.m4,v 1.24 2004/09/15 18:48:07 tiwai Exp $
6 dnl
7 dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
8 dnl Test for libasound, and define ALSA_CFLAGS, ALSA_LIBS and
9 dnl ALSA_TOPOLOGY_LIBS as appropriate.
10 dnl
11 dnl enables arguments --with-alsa-prefix=
12 dnl --with-alsa-inc-prefix=
13 dnl --disable-alsatest
14 dnl
15 dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified,
16 dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result.
17 dnl
18
19 AC_DEFUN([AM_PATH_ALSA],
20 [dnl Save the original CFLAGS, LDFLAGS, and LIBS
21 alsa_save_CFLAGS="$CFLAGS"
22 alsa_save_LDFLAGS="$LDFLAGS"
23 alsa_save_LIBS="$LIBS"
24 alsa_found=yes
25 alsa_topology_found=no
26
27 dnl
28 dnl Get the cflags and libraries for alsa
29 dnl
30 AC_ARG_WITH(alsa-prefix,
31 AS_HELP_STRING([--with-alsa-prefix=PFX], [Prefix where Alsa library is installed(optional)]),
32 [alsa_prefix="$withval"], [alsa_prefix=""])
33
34 AC_ARG_WITH(alsa-inc-prefix,
35 AS_HELP_STRING([--with-alsa-inc-prefix=PFX], [Prefix where include libraries are (optional)]),
36 [alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])
37
38 AC_ARG_ENABLE(alsa-topology,
39 AS_HELP_STRING([--enable-alsatopology], [Force to use the Alsa topology library]),
40 [enable_atopology="$enableval"],
41 [enable_atopology=no])
42
43 AC_ARG_ENABLE(alsatest,
44 AS_HELP_STRING([--disable-alsatest], [Do not try to compile and run a test Alsa program]),
45 [enable_alsatest="$enableval"],
46 [enable_alsatest=yes])
47
48 dnl Add any special include directories
49 AC_MSG_CHECKING(for ALSA CFLAGS)
50 if test "$alsa_inc_prefix" != "" ; then
51 ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix"
52 CFLAGS="$CFLAGS -I$alsa_inc_prefix"
53 fi
54 AC_MSG_RESULT($ALSA_CFLAGS)
55
56 AC_CHECK_LIB(c, dlopen, LIBDL="", [AC_CHECK_LIB(dl, dlopen, LIBDL="-ldl")])
57
58 dnl add any special lib dirs
59 AC_MSG_CHECKING(for ALSA LDFLAGS)
60 if test "$alsa_prefix" != "" ; then
61 ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix"
62 LDFLAGS="$LDFLAGS $ALSA_LIBS"
63 fi
64
65 dnl add the alsa library
66 ALSA_LIBS="$ALSA_LIBS -lasound -lm $LIBDL -lpthread"
67 LIBS="$ALSA_LIBS $LIBS"
68 AC_MSG_RESULT($ALSA_LIBS)
69
70 dnl Check for a working version of libasound that is of the right version.
71 if test "x$enable_alsatest" = "xyes"; then
72
73 AC_MSG_CHECKING([required libasound headers version])
74 min_alsa_version=ifelse([$1], , 0.1.1, $1)
75 no_alsa=""
76 alsa_min_major_version=`echo $min_alsa_version | \
77 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
78 alsa_min_minor_version=`echo $min_alsa_version | \
79 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
80 alsa_min_micro_version=`echo $min_alsa_version | \
81 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
82 AC_MSG_RESULT($alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version)
83
84 AC_LANG_SAVE
85 AC_LANG_C
86 AC_MSG_CHECKING([for libasound headers version >= $alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version ($min_alsa_version)])
87 AC_TRY_COMPILE([
88 #include <alsa/asoundlib.h>
89 ], [
90 /* ensure backward compatibility */
91 #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
92 #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
93 #endif
94 #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
95 #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
96 #endif
97 #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
98 #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
99 #endif
100
101 # if(SND_LIB_MAJOR > $alsa_min_major_version)
102 exit(0);
103 # else
104 # if(SND_LIB_MAJOR < $alsa_min_major_version)
105 # error not present
106 # endif
107
108 # if(SND_LIB_MINOR > $alsa_min_minor_version)
109 exit(0);
110 # else
111 # if(SND_LIB_MINOR < $alsa_min_minor_version)
112 # error not present
113 # endif
114
115 # if(SND_LIB_SUBMINOR < $alsa_min_micro_version)
116 # error not present
117 # endif
118 # endif
119 # endif
120 exit(0);
121 ],
122 [AC_MSG_RESULT(found.)],
123 [AC_MSG_RESULT(not present.)
124 ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)])
125 alsa_found=no]
126 )
127 AC_LANG_RESTORE
128
129 AC_LANG_SAVE
130 AC_LANG_C
131 AC_MSG_CHECKING([for libatopology (sound headers version > 1.1.9)])
132 AC_TRY_COMPILE([
133 #include <alsa/asoundlib.h>
134 #include <alsa/topology.h>
135 ], [
136 /* ensure backward compatibility */
137 #if !defined(SND_LIB_VERSION)
138 #define SND_LIB_VERSION 0
139 #endif
140 #if SND_LIB_VERSION > 0x00010109
141 exit(0);
142 #else
143 # error not present
144 #endif
145 exit(0);
146 ],
147 [AC_MSG_RESULT(yes)
148 enable_atopology="yes"],
149 [AC_MSG_RESULT(no)]
150 )
151 AC_LANG_RESTORE
152
153 fi
154
155 dnl Now that we know that we have the right version, let's see if we have the library and not just the headers.
156 if test "x$enable_alsatest" = "xyes"; then
157 AC_CHECK_LIB([asound], [snd_ctl_open],,
158 [ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)])
159 alsa_found=no]
160 )
161 if test "x$enable_atopology" = "xyes"; then
162 alsa_topology_found=yes
163 alsa_save_LIBS2="$LIBS"
164 AC_CHECK_LIB([atopology], [snd_tplg_new],,
165 [ifelse([$3], , [AC_MSG_ERROR(No linkable libatopology was found.)])
166 alsa_topology_found=no,
167 ]
168 )
169 LIBS="$alsa_save_LIBS2"
170 fi
171 else
172 if test "x$enable_atopology" = "xyes"; then
173 alsa_topology_found=yes
174 fi
175 fi
176
177 if test "x$alsa_found" = "xyes" ; then
178 ifelse([$2], , :, [$2])
179 LIBS=`echo $LIBS | sed 's/-lasound//g'`
180 LIBS=`echo $LIBS | sed 's/ //'`
181 LIBS="-lasound $LIBS"
182 fi
183 if test "x$alsa_found" = "xno" ; then
184 ifelse([$3], , :, [$3])
185 CFLAGS="$alsa_save_CFLAGS"
186 LDFLAGS="$alsa_save_LDFLAGS"
187 LIBS="$alsa_save_LIBS"
188 ALSA_CFLAGS=""
189 ALSA_LIBS=""
190 ALSA_TOPOLOGY_LIBS=""
191 fi
192
193 dnl add the alsa topology library; must be at the end
194 AC_MSG_CHECKING(for ALSA topology LDFLAGS)
195 if test "x$alsa_topology_found" = "xyes"; then
196 ALSA_TOPOLOGY_LIBS="$ALSA_TOPOLOGY_LIBS -latopology"
197 fi
198 AC_MSG_RESULT($ALSA_TOPOLOGY_LIBS)
199
200 dnl That should be it. Now just export out symbols:
201 AC_SUBST(ALSA_CFLAGS)
202 AC_SUBST(ALSA_LIBS)
203 AC_SUBST(ALSA_TOPOLOGY_LIBS)
204 ])