# Process this file with autoconf to produce a configure script.
AC_INIT(RtAudio, 2.1, gary@ccrma.stanford.edu, rtaudio)
AC_CONFIG_SRCDIR(RtAudio.cpp)
AC_CONFIG_FILES(tests/Makefile)

# Checks for programs.
AC_PROG_CC
AC_PROG_CXX(CC g++ c++ cxx)

# Checks for libraries.
AC_CHECK_LIB(pthread, pthread_create, , AC_MSG_ERROR(RtAudio requires the pthread library!))

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/ioctl.h unistd.h)

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

# Check for debug
AC_MSG_CHECKING(whether to compile debug version)
AC_ARG_ENABLE(debug,
  [  --enable-debug = enable various debug output],
  [AC_SUBST( debug, [-D__RTAUDIO_DEBUG__] ) AC_SUBST( cflags, [-g] ) AC_SUBST( object_path, [Debug] ) AC_MSG_RESULT(yes)],
  [AC_SUBST( debug, [] ) AC_SUBST( cflags, [-O2] ) AC_SUBST( object_path, [Release] ) AC_MSG_RESULT(no)])

# Check compiler and use -Wall if gnu.
if test $GXX = "yes" ; then
  AC_SUBST( warn, [-Wall] )
fi

# Checks for package options and external software
AC_CANONICAL_HOST
AC_MSG_CHECKING(for audio API)
case $host in
  *-*-linux*)
  AC_ARG_WITH(alsa, [  --with-alsa = choose native ALSA API support (linux only)], [AC_SUBST( sound_api, [-D__LINUX_ALSA__] ) AC_MSG_RESULT(using ALSA) ], [AC_SUBST( sound_api, [-D__LINUX_OSS__] ) AC_MSG_RESULT(using OSS)])

  if test $sound_api = -D__LINUX_ALSA__; then
    AC_CHECK_LIB(asound, snd_pcm_open, , AC_MSG_ERROR(ALSA support requires the asound library!))
  fi
  ;;

  *-sgi*)
  AC_SUBST( sound_api, [-D__IRIX_AL__] )
  AC_MSG_RESULT(using IRIX AL)
  AC_CHECK_LIB(audio, alOpenPort, , AC_MSG_ERROR(IRIX audio support requires the audio library!) )
  ;;

  *-apple*)
  # Check for CoreAudio framework
  AC_CHECK_HEADER(CoreAudio/CoreAudio.h,
    [AC_SUBST( sound_api, [-D__MACOSX_CORE__] )],
    [AC_MSG_ERROR(CoreAudio header files not found!)] )
  AC_SUBST( frameworks, ["-framework CoreAudio"] )
  AC_CHECK_LIB(stdc++, printf, , AC_MSG_ERROR(RtAudio requires the C++ library!) )
  ;;

  *)
  # Default case for unknown realtime systems.
  AC_MSG_ERROR(Unknown system type for realtime support!)
  ;;
esac

# Checks for library functions.
AC_PROG_GCC_TRADITIONAL

AC_OUTPUT