Contents of /trunk/xmms/gentoo-m4/alsa.m4
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Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 4338 byte(s)
Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 4338 byte(s)
-import
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@suse.cz> |
5 | dnl Last modification: alsa.m4,v 1.24 2004/09/15 18:48:07 tiwai Exp |
6 | dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) |
7 | dnl Test for libasound, and define ALSA_CFLAGS and ALSA_LIBS as appropriate. |
8 | dnl enables arguments --with-alsa-prefix= |
9 | dnl --with-alsa-enc-prefix= |
10 | dnl --disable-alsatest |
11 | dnl |
12 | dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified, |
13 | dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result. |
14 | dnl |
15 | AC_DEFUN([AM_PATH_ALSA], |
16 | [dnl Save the original CFLAGS, LDFLAGS, and LIBS |
17 | alsa_save_CFLAGS="$CFLAGS" |
18 | alsa_save_LDFLAGS="$LDFLAGS" |
19 | alsa_save_LIBS="$LIBS" |
20 | alsa_found=yes |
21 | |
22 | dnl |
23 | dnl Get the cflags and libraries for alsa |
24 | dnl |
25 | AC_ARG_WITH(alsa-prefix, |
26 | [ --with-alsa-prefix=PFX Prefix where Alsa library is installed(optional)], |
27 | [alsa_prefix="$withval"], [alsa_prefix=""]) |
28 | |
29 | AC_ARG_WITH(alsa-inc-prefix, |
30 | [ --with-alsa-inc-prefix=PFX Prefix where include libraries are (optional)], |
31 | [alsa_inc_prefix="$withval"], [alsa_inc_prefix=""]) |
32 | |
33 | dnl FIXME: this is not yet implemented |
34 | AC_ARG_ENABLE(alsatest, |
35 | [ --disable-alsatest Do not try to compile and run a test Alsa program], |
36 | [enable_alsatest="$enableval"], |
37 | [enable_alsatest=yes]) |
38 | |
39 | dnl Add any special include directories |
40 | AC_MSG_CHECKING(for ALSA CFLAGS) |
41 | if test "$alsa_inc_prefix" != "" ; then |
42 | ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix" |
43 | CFLAGS="$CFLAGS -I$alsa_inc_prefix" |
44 | fi |
45 | AC_MSG_RESULT($ALSA_CFLAGS) |
46 | |
47 | dnl add any special lib dirs |
48 | AC_MSG_CHECKING(for ALSA LDFLAGS) |
49 | if test "$alsa_prefix" != "" ; then |
50 | ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix" |
51 | LDFLAGS="$LDFLAGS $ALSA_LIBS" |
52 | fi |
53 | |
54 | dnl add the alsa library |
55 | ALSA_LIBS="$ALSA_LIBS -lasound -lm -ldl -lpthread" |
56 | LIBS="$ALSA_LIBS $LIBS" |
57 | AC_MSG_RESULT($ALSA_LIBS) |
58 | |
59 | dnl Check for a working version of libasound that is of the right version. |
60 | min_alsa_version=ifelse([$1], ,0.1.1,$1) |
61 | AC_MSG_CHECKING(for libasound headers version >= $min_alsa_version) |
62 | no_alsa="" |
63 | alsa_min_major_version=`echo $min_alsa_version | \ |
64 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` |
65 | alsa_min_minor_version=`echo $min_alsa_version | \ |
66 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` |
67 | alsa_min_micro_version=`echo $min_alsa_version | \ |
68 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` |
69 | |
70 | AC_LANG_SAVE |
71 | AC_LANG_C |
72 | AC_TRY_COMPILE([ |
73 | #include <alsa/asoundlib.h> |
74 | ], [ |
75 | /* ensure backward compatibility */ |
76 | #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR) |
77 | #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR |
78 | #endif |
79 | #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR) |
80 | #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR |
81 | #endif |
82 | #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR) |
83 | #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR |
84 | #endif |
85 | |
86 | # if(SND_LIB_MAJOR > $alsa_min_major_version) |
87 | exit(0); |
88 | # else |
89 | # if(SND_LIB_MAJOR < $alsa_min_major_version) |
90 | # error not present |
91 | # endif |
92 | |
93 | # if(SND_LIB_MINOR > $alsa_min_minor_version) |
94 | exit(0); |
95 | # else |
96 | # if(SND_LIB_MINOR < $alsa_min_minor_version) |
97 | # error not present |
98 | # endif |
99 | |
100 | # if(SND_LIB_SUBMINOR < $alsa_min_micro_version) |
101 | # error not present |
102 | # endif |
103 | # endif |
104 | # endif |
105 | exit(0); |
106 | ], |
107 | [AC_MSG_RESULT(found.)], |
108 | [AC_MSG_RESULT(not present.) |
109 | ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)]) |
110 | alsa_found=no] |
111 | ) |
112 | AC_LANG_RESTORE |
113 | |
114 | dnl Now that we know that we have the right version, let's see if we have the library and not just the headers. |
115 | if test "x$enable_alsatest" = "xyes"; then |
116 | AC_CHECK_LIB([asound], [snd_ctl_open],, |
117 | [ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)]) |
118 | alsa_found=no] |
119 | ) |
120 | fi |
121 | |
122 | if test "x$alsa_found" = "xyes" ; then |
123 | ifelse([$2], , :, [$2]) |
124 | LIBS=`echo $LIBS | sed 's/-lasound//g'` |
125 | LIBS=`echo $LIBS | sed 's/ //'` |
126 | LIBS="-lasound $LIBS" |
127 | fi |
128 | if test "x$alsa_found" = "xno" ; then |
129 | ifelse([$3], , :, [$3]) |
130 | CFLAGS="$alsa_save_CFLAGS" |
131 | LDFLAGS="$alsa_save_LDFLAGS" |
132 | LIBS="$alsa_save_LIBS" |
133 | ALSA_CFLAGS="" |
134 | ALSA_LIBS="" |
135 | fi |
136 | |
137 | dnl That should be it. Now just export out symbols: |
138 | AC_SUBST(ALSA_CFLAGS) |
139 | AC_SUBST(ALSA_LIBS) |
140 | ]) |
141 |