source: trunk/third/libao/ao.m4 @ 22079

Revision 22079, 3.6 KB checked in by ghudson, 19 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r22078, which included commits to RCS files with non-trunk default branches.
Line 
1# ao.m4
2# Configure paths for libao
3# Jack Moffitt <jack@icecast.org> 10-21-2000
4# Shamelessly stolen from Owen Taylor and Manish Singh
5
6dnl XIPH_PATH_AO([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
7dnl Test for libao, and define AO_CFLAGS and AO_LIBS
8dnl
9AC_DEFUN([XIPH_PATH_AO],
10[dnl
11dnl Get the cflags and libraries
12dnl
13AC_ARG_WITH(ao,[  --with-ao=PFX   Prefix where libao is installed (optional)], ao_prefix="$withval", ao_prefix="")
14AC_ARG_WITH(ao-libraries,[  --with-ao-libraries=DIR   Directory where libao library is installed (optional)], ao_libraries="$withval", ao_libraries="")
15AC_ARG_WITH(ao-includes,[  --with-ao-includes=DIR   Directory where libao header files are installed (optional)], ao_includes="$withval", ao_includes="")
16AC_ARG_ENABLE(aotest, [  --disable-aotest       Do not try to compile and run a test ao program],, enable_aotest=yes)
17
18
19  if test "x$ao_libraries" != "x" ; then
20    AO_LIBS="-L$ao_libraries"
21  elif test "x$ao_prefix" != "x"; then
22    AO_LIBS="-L$ao_prefix/lib"
23  elif test "x$prefix" != "xNONE"; then
24    AO_LIBS="-L$prefix/lib"
25  fi
26
27  if test "x$ao_includes" != "x" ; then
28    AO_CFLAGS="-I$ao_includes"
29  elif test "x$ao_prefix" != "x"; then
30    AO_CFLAGS="-I$ao_prefix/include"
31  elif test "x$prefix" != "xNONE"; then
32    AO_CFLAGS="-I$prefix/include"
33  fi
34
35  # see where dl* and friends live
36  AC_CHECK_FUNCS(dlopen, [AO_DL_LIBS=""], [
37    AC_CHECK_LIB(dl, dlopen, [AO_DL_LIBS="-ldl"], [
38      AC_MSG_WARN([could not find dlopen() needed by libao sound drivers
39      your system may not be supported.])
40    ])
41  ])
42
43  AO_LIBS="$AO_LIBS -lao $AO_DL_LIBS"
44
45  AC_MSG_CHECKING(for ao)
46  no_ao=""
47
48
49  if test "x$enable_aotest" = "xyes" ; then
50    ac_save_CFLAGS="$CFLAGS"
51    ac_save_LIBS="$LIBS"
52    CFLAGS="$CFLAGS $AO_CFLAGS"
53    LIBS="$LIBS $AO_LIBS"
54dnl
55dnl Now check if the installed ao is sufficiently new.
56dnl
57      rm -f conf.aotest
58      AC_TRY_RUN([
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62#include <ao/ao.h>
63
64int main ()
65{
66  system("touch conf.aotest");
67  return 0;
68}
69
70],, no_ao=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
71       CFLAGS="$ac_save_CFLAGS"
72       LIBS="$ac_save_LIBS"
73  fi
74
75  if test "x$no_ao" = "x" ; then
76     AC_MSG_RESULT(yes)
77     ifelse([$1], , :, [$1])     
78  else
79     AC_MSG_RESULT(no)
80     if test -f conf.aotest ; then
81       :
82     else
83       echo "*** Could not run ao test program, checking why..."
84       CFLAGS="$CFLAGS $AO_CFLAGS"
85       LIBS="$LIBS $AO_LIBS"
86       AC_TRY_LINK([
87#include <stdio.h>
88#include <ao/ao.h>
89],     [ return 0; ],
90       [ echo "*** The test program compiled, but did not run. This usually means"
91       echo "*** that the run-time linker is not finding ao or finding the wrong"
92       echo "*** version of ao. If it is not finding ao, you'll need to set your"
93       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
94       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
95       echo "*** is required on your system"
96       echo "***"
97       echo "*** If you have an old version installed, it is best to remove it, although"
98       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
99       [ echo "*** The test program failed to compile or link. See the file config.log for the"
100       echo "*** exact error that occured. This usually means ao was incorrectly installed"
101       echo "*** or that you have moved ao since it was installed." ])
102       CFLAGS="$ac_save_CFLAGS"
103       LIBS="$ac_save_LIBS"
104     fi
105     AO_CFLAGS=""
106     AO_LIBS=""
107     ifelse([$2], , :, [$2])
108  fi
109  AC_SUBST(AO_CFLAGS)
110  AC_SUBST(AO_LIBS)
111  rm -f conf.aotest
112])
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