configure-al.m4

   1 dnl Checking for OpenAL
   2 AC_ARG_WITH([openal-static],
   3             AC_HELP_STRING([--with-openal-static],
   4                            [enable static linking for openal (default no)]),
   5             [use_static_openal=${withval}],,)
   6 AC_ARG_ENABLE(openaltest,
   7         [  --disable-openaltest    Do not try to compile and run a test OpenAL program],
   8                     , enable_openaltest=yes)
   9 AC_MSG_CHECKING(for OpenAL support)
  10 AC_PATH_PROG(OPENAL_CONFIG, openal-config, no)
  11 if test x$OPENAL_CONFIG = xno; then
  12         echo "*** The openal-config script installed by OpenAL could not be found"
  13         echo "*** Make sure openal-config is in your path, or set the OPENAL_CONFIG"
  14         echo "*** environment variable to the full path to openal-config."
  15
  16         AC_MSG_ERROR([*** Can't find the openal library. Try: http://www.openal.org/])
  17 else
  18
  19         if test x"$use_static_openal" = x"yes"; then
  20                 AL_LIBS="/usr/local/lib/libopenal.a"
  21         else
  22                 AL_LIBS="`$OPENAL_CONFIG --libs`"
  23         fi
  24
  25         AL_CFLAGS="`$OPENAL_CONFIG --cflags`"
  26
  27         AC_MSG_RESULT(yes)
  28 fi
  29
  30 AC_MSG_CHECKING(for Freealut support)
  31 AC_PATH_PROG(FREEALUT_CONFIG, freealut-config, no)
  32 if test x$FREEALUT_CONFIG = xno; then
  33         echo "*** Warning: The freealut-config script installed by OpenAL could not be found."
  34         echo "*** The alut library is required, however some older OpenAL distribitions may include it."
  35         echo "*** If Scorched3D fails to link check alut is in the link line."
  36         echo "*** Alternatively, make sure freealut-config is in your path, or set the FREEALUT_CONFIG"
  37         echo "*** environment variable to the full path to openal-config."
  38 else
  39
  40         AL_LIBS="$AL_LIBS `$FREEALUT_CONFIG --libs`"
  41         AL_CFLAGS="$AL_CFLAGS `$FREEALUT_CONFIG --cflags`"
  42
  43         AC_MSG_RESULT(yes)
  44 fi
  45
  46 AC_MSG_CHECKING(for OpenAL compilation)
  47 if test "x$enable_openaltest" = "xyes" ; then
  48
  49         ac_save_CFLAGS="$CFLAGS"
  50         ac_save_LIBS="$LIBS"
  51         CFLAGS="$CFLAGS $AL_CFLAGS"
  52         LIBS="$AL_LIBS $LIBS"
  53
  54         AC_TRY_COMPILE([
  55 #ifdef __APPLE__
  56                 #include <OpenAL/al.h>
  57                 #include <OpenAL/alut.h>
  58                 #include <OpenAL/alc.h>
  59 #else
  60                 #include <AL/al.h>
  61                 #include <AL/alut.h>
  62                 #include <AL/alc.h>
  63 #endif
  64
  65                 ],[
  66                 ],[
  67                 have_openal=yes
  68                 ],[
  69                 echo "*** Failed to compile using the OpenAL library."
  70                 echo "*** CFLAGS = $AL_CFLAGS";
  71                 AC_MSG_ERROR([*** Check the OpenAL library is correctly installed.])
  72         ])
  73
  74         AC_TRY_LINK([
  75 #ifdef __APPLE__
  76                 #include <OpenAL/al.h>
  77                 #include <OpenAL/alut.h>
  78                 #include <OpenAL/alc.h>
  79 #else
  80                 #include <AL/al.h>
  81                 #include <AL/alut.h>
  82                 #include <AL/alc.h>
  83 #endif
  84
  85                 int main(int argc, char *argv[])
  86                 {
  87                         alutInit(argc, argv);
  88                         return 0;
  89                 }
  90 #undef  main
  91 #define main K_and_R_C_main
  92
  93                 ],[
  94                 ],[
  95                 have_openal=yes
  96                 ],[
  97                 echo "*** Compiled but failed to link using the OpenAL library."
  98                 echo "*** LIBS = $AL_LIBS";
  99                 echo "*** Check the OpenAL library is on the LD_LIBRARY_PATH";
 100                 AC_MSG_ERROR([*** Check the OpenAL library is correctly installed.])
 101         ])
 102
 103         CFLAGS="$ac_save_CFLAGS"
 104         LIBS="$ac_save_LIBS"
 105
 106         AC_MSG_RESULT(yes)
 107 fi
 108
 109 AC_SUBST(AL_CFLAGS)
 110 AC_SUBST(AL_LIBS)
 111