1# Configure paths for libopus
2# Gregory Maxwell <greg@xiph.org> 08-30-2012
3# Shamelessly stolen from Jack Moffitt (libogg) who
4# Shamelessly stole from Owen Taylor and Manish Singh
5
6dnl XIPH_PATH_OPUS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
7dnl Test for libopus, and define OPUS_CFLAGS and OPUS_LIBS
8dnl
9AC_DEFUN([XIPH_PATH_OPUS],
10[dnl
11dnl Get the cflags and libraries
12dnl
13AC_ARG_WITH(opus,AC_HELP_STRING([--with-opus=PFX],[Prefix where opus is installed (optional)]), opus_prefix="$withval", opus_prefix="")
14AC_ARG_WITH(opus-libraries,AC_HELP_STRING([--with-opus-libraries=DIR],[Directory where the opus library is installed (optional)]), opus_libraries="$withval", opus_libraries="")
15AC_ARG_WITH(opus-includes,AC_HELP_STRING([--with-opus-includes=DIR],[Directory where the opus header files are installed (optional)]), opus_includes="$withval", opus_includes="")
16AC_ARG_ENABLE(opustest,AC_HELP_STRING([--disable-opustest],[Do not try to compile and run a test opus program]),, enable_opustest=yes)
17
18  if test "x$opus_libraries" != "x" ; then
19    OPUS_LIBS="-L$opus_libraries"
20  elif test "x$opus_prefix" = "xno" || test "x$opus_prefix" = "xyes" ; then
21    OPUS_LIBS=""
22  elif test "x$opus_prefix" != "x" ; then
23    OPUS_LIBS="-L$opus_prefix/lib"
24  elif test "x$prefix" != "xNONE" ; then
25    OPUS_LIBS="-L$prefix/lib"
26  fi
27
28  if test "x$opus_prefix" != "xno" ; then
29    OPUS_LIBS="$OPUS_LIBS -lopus"
30  fi
31
32  if test "x$opus_includes" != "x" ; then
33    OPUS_CFLAGS="-I$opus_includes"
34  elif test "x$opus_prefix" = "xno" || test "x$opus_prefix" = "xyes" ; then
35    OPUS_CFLAGS=""
36  elif test "x$opus_prefix" != "x" ; then
37    OPUS_CFLAGS="-I$opus_prefix/include"
38  elif test "x$prefix" != "xNONE"; then
39    OPUS_CFLAGS="-I$prefix/include"
40  fi
41
42  AC_MSG_CHECKING(for Opus)
43  if test "x$opus_prefix" = "xno" ; then
44    no_opus="disabled"
45    enable_opustest="no"
46  else
47    no_opus=""
48  fi
49
50
51  if test "x$enable_opustest" = "xyes" ; then
52    ac_save_CFLAGS="$CFLAGS"
53    ac_save_LIBS="$LIBS"
54    CFLAGS="$CFLAGS $OPUS_CFLAGS"
55    LIBS="$LIBS $OPUS_LIBS"
56dnl
57dnl Now check if the installed Opus is sufficiently new.
58dnl
59      rm -f conf.opustest
60      AC_TRY_RUN([
61#include <stdio.h>
62#include <stdlib.h>
63#include <string.h>
64#include <opus.h>
65
66int main ()
67{
68  system("touch conf.opustest");
69  return 0;
70}
71
72],, no_opus=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
73       CFLAGS="$ac_save_CFLAGS"
74       LIBS="$ac_save_LIBS"
75  fi
76
77  if test "x$no_opus" = "xdisabled" ; then
78     AC_MSG_RESULT(no)
79     ifelse([$2], , :, [$2])
80  elif test "x$no_opus" = "x" ; then
81     AC_MSG_RESULT(yes)
82     ifelse([$1], , :, [$1])
83  else
84     AC_MSG_RESULT(no)
85     if test -f conf.opustest ; then
86       :
87     else
88       echo "*** Could not run Opus test program, checking why..."
89       CFLAGS="$CFLAGS $OPUS_CFLAGS"
90       LIBS="$LIBS $OPUS_LIBS"
91       AC_TRY_LINK([
92#include <stdio.h>
93#include <opus.h>
94],     [ return 0; ],
95       [ echo "*** The test program compiled, but did not run. This usually means"
96       echo "*** that the run-time linker is not finding Opus or finding the wrong"
97       echo "*** version of Opus. If it is not finding Opus, you'll need to set your"
98       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
99       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
100       echo "*** is required on your system"
101       echo "***"
102       echo "*** If you have an old version installed, it is best to remove it, although"
103       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
104       [ echo "*** The test program failed to compile or link. See the file config.log for the"
105       echo "*** exact error that occurred. This usually means Opus was incorrectly installed"
106       echo "*** or that you have moved Opus since it was installed." ])
107       CFLAGS="$ac_save_CFLAGS"
108       LIBS="$ac_save_LIBS"
109     fi
110     OPUS_CFLAGS=""
111     OPUS_LIBS=""
112     ifelse([$2], , :, [$2])
113  fi
114  AC_SUBST(OPUS_CFLAGS)
115  AC_SUBST(OPUS_LIBS)
116  rm -f conf.opustest
117])
118