###########################################
#                                         #
#  (C) 2010 Serghei Amelian               #
#  serghei (DOT) amelian (AT) gmail.com   #
#                                         #
#  Improvements and feedback are welcome  #
#                                         #
#  This file is released under GPL >= 2   #
#                                         #
###########################################

# required stuff

tde_setup_architecture_flags( )

include(TestBigEndian)
test_big_endian(WORDS_BIGENDIAN)

tde_setup_largefiles( )


##### check for gcc visibility support

if( WITH_GCC_VISIBILITY )
  tde_setup_gcc_visibility( )
endif( WITH_GCC_VISIBILITY )


find_package( Threads )


##### check for include files

check_include_file( "stdio.h"      HAVE_STDIO_H      )
check_include_file( "stdlib.h"     HAVE_STDLIB_H     )
check_include_file( "string.h"     HAVE_STRING_H     )
check_include_file( "strings.h"    HAVE_STRINGS_H    )
check_include_file( "ctype.h"      HAVE_CTYPE_H      )
check_include_file( "malloc.h"     HAVE_MALLOC_H     )
check_include_file( "memory.h"     HAVE_MEMORY_H     )
check_include_file( "dlfcn.h"      HAVE_DLFCN_H      )
check_include_file( "sys/select.h" HAVE_SYS_SELECT_H )
check_include_file( "csl/csl.h"    HAVE_LIBCSL       )
check_include_file( "libaudioio.h" HAVE_LIBAUDIOIO   )
check_include_file( "mas/mas.h"    HAVE_LIBMAS       )
check_include_file( "pthread.h"    HAVE_LIBPTHREAD   )

check_include_file(  "sys/time.h"        HAVE_SYS_TIME_H    )
check_include_files( "sys/time.h;time.h" TIME_WITH_SYS_TIME )

check_include_file(  "sys/soundcard.h"             HAVE_SYS_SOUNDCARD_H )
check_include_files( "sys/soundcard.h;soundcard.h" HAVE_SOUNDCARD_H     )


##### check for system library dl

set( DL_LIBRARIES dl )
check_library_exists( ${DL_LIBRARIES} dlopen /lib HAVE_LIBDL )

if( NOT HAVE_LIBDL )
    unset( DL_LIBRARIES )
    check_function_exists( dlopen HAVE_DLOPEN )
    if( HAVE_DLOPEN )
        set( HAVE_LIBDL 1 )
    endif( HAVE_DLOPEN )
endif( NOT HAVE_LIBDL )


##### check for functions #######################

set( bak_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} )
set( CMAKE_REQUIRED_LIBRARIES ${DL_LIBRARIES} )
check_function_exists( dlerror HAVE_DLERROR )
check_function_exists( strcmp HAVE_STRCMP )
check_function_exists( strchr HAVE_STRCHR )
check_function_exists( index HAVE_INDEX )
check_function_exists( strrchr HAVE_STRRCHR )
check_function_exists( rindex HAVE_RINDEX )
check_function_exists( memcpy HAVE_MEMCPY )
check_function_exists( bcopy HAVE_BCOPY )
set( CMAKE_REQUIRED_LIBRARIES ${bak_CMAKE_REQUIRED_LIBRARIES} )
unset( bak_CMAKE_REQUIRED_LIBRARIES )
check_prototype_definition( ioctl "int ioctl(int d, int request, ...)" "-1" "unistd.h;sys/ioctl.h" HAVE_IOCTL_INT_INT_DOTS )
check_prototype_definition( ioctl "int ioctl(int d, unsigned long request, ...)" "-1" "unistd.h;sys/ioctl.h" HAVE_IOCTL_INT_ULONG_DOTS )


##### check for audiofile

set( HAVE_LIBAUDIOFILE 0 )

if( WITH_AUDIOFILE )
    pkg_search_module( AUDIOFILE audiofile )
    if( AUDIOFILE_FOUND )
        set( HAVE_LIBAUDIOFILE 1 )
     else()
        tde_message_fatal( "audiofile (wav) support has been requested, but was not found" )
    endif()
endif( WITH_AUDIOFILE )


##### check for alsa

set( HAVE_LIBASOUND2 0 )

if( WITH_ALSA )
    pkg_search_module( ALSA alsa )
    if( ALSA_FOUND )                                                    # there is support only for ALSA 1.x
        set( HAVE_LIBASOUND2 1 )
        set( ALSA_PCM_OLD_SW_PARAMS_API 1 )                             # where is It neded?
        set( ALSA_PCM_OLD_HW_PARAMS_API 1 )                             # where is It neded?

        check_include_file( "alsa/asoundlib.h" HAVE_ALSA_ASOUNDLIB_H )
        if( NOT HAVE_ALSA_ASOUNDLIB_H )
            check_include_file( "sys/asoundlib.h" HAVE_SYS_ASOUNDLIB_H )
        endif()

        set( bak_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} )
        set( CMAKE_REQUIRED_LIBRARIES ${ALSA_LIBRARIES} )
        check_function_exists( snd_pcm_resume HAVE_SND_PCM_RESUME )
        set( CMAKE_REQUIRED_LIBRARIES ${bak_CMAKE_REQUIRED_LIBRARIES} )
        unset( bak_CMAKE_REQUIRED_LIBRARIES )
     else()
        tde_message_fatal( "ALSA support has been requested, but was not found" )
    endif()
endif( WITH_ALSA )


##### check for esound

set( HAVE_LIBESD 0 )

if( WITH_ESOUND )
    pkg_search_module( ESOUND esound )
    if( ESOUND_FOUND )
        set( HAVE_LIBESD 1 )
     else()
        tde_message_fatal( "ESOUND support has been requested, but was not found" )
    endif()
endif( WITH_ESOUND )


##### check for JACK

set( HAVE_LIBJACK 0 )

if( WITH_JACK )
    pkg_search_module( LIBJACK jack )
    if( LIBJACK_FOUND )
        set( HAVE_LIBJACK 1 )
     else()
        tde_message_fatal( "JACK support has been requested, but was not found" )
  endif( LIBJACK_FOUND )
endif( WITH_JACK )


##### check for Network Audio System

if( WITH_NAS )
    find_path( NAS_HEADER "audio/audiolib.h" )
    find_library( NAS_LIBRARY audio )

    if( NAS_HEADER AND NAS_LIBRARY )
        set( HAVE_LIBAUDIONAS 1 )
        set( NAS_INCLUDE_DIR "${NAS_HEADER}" )
        set( NAS_LIBRARIES ${NAS_LIBRARY} )
        message( STATUS "Looking for Nas - found" )
     else()
        tde_message_fatal( "Nas support has been requested, but was not found" )
    endif()
endif( WITH_NAS )


##### check for Open Sound System

if( WITH_OSS OR WITH_TOSS )
    find_path( OSS_HEADER "sys/soundcard.h"
               NO_DEFAULT_PATH
               HINTS /usr/lib/oss/include
                     /usr/lib64/oss/include
    )
    find_library( OSS_LIBRARY OSSlib
                  NO_DEFAULT_PATH
                  HINTS /usr/lib/oss/lib
                        /usr/lib64/oss/lib
    )
    if( OSS_HEADER AND OSS_LIBRARY )
        set( OSS_INCLUDE_DIR "${OSS_HEADER}" )
        set( OSS_LIBRARIES "${OSS_LIBRARY}" )
     else()
        tde_message_fatal( "OSS support has been requested, but was not found" )
    endif()
endif( WITH_OSS OR WITH_TOSS )


##### check for SNDIO ###########################

set( HAVE_LIBSNDIO 0 )
if( WITH_SNDIO )
  check_include_file( "sndio.h" HAVE_SNDIO_H )
  if( HAVE_SNDIO_H )
    set( HAVE_LIBSNDIO 1 )
    set( LIBSNDIO_LIBRARIES "sndio" )
  else( HAVE_SNDIO_H )
    tde_message_fatal( "SNDIO support is requested, but `sndio.h` was not found" )
  endif( HAVE_SNDIO_H )
endif( WITH_SNDIO )


##### check for glib/gthread

pkg_search_module( GLIB2 glib-2.0 )

if( GLIB2_FOUND )
    pkg_search_module( GTHREAD2 gthread-2.0 )
    if( NOT GTHREAD2_FOUND )
        tde_message_fatal( "gthread-2.0 is required, but was not found on your system" )
    endif()
 else()
    tde_message_fatal( "glib-2.0 is required, but was not found on your system" )
endif( GLIB2_FOUND )


##### check for ogg/vorbis

set( GSL_HAVE_OGGVORBIS 0 )

if( WITH_VORBIS )
    pkg_search_module( VORBIS vorbis )
    if( VORBIS_FOUND )
        pkg_search_module( LIBOGG ogg )
        if( NOT LIBOGG_FOUND )
            tde_message_fatal( "Ogg/Vorbis support has been requested, but Ogg was not found" )
        endif()
        pkg_search_module( LIBVORBISENC vorbisenc )
        pkg_search_module( VORBISFILE vorbisfile )
        if( VORBISFILE_FOUND )
            set( GSL_HAVE_OGGVORBIS 1 )
            
            set( bak_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} )
            set( CMAKE_REQUIRED_LIBRARIES ${VORBISFILE_LIBRARIES} )
            check_c_source_compiles("
                #include <vorbis/vorbisfile.h>
                int main()
                {
                    ov_read_float(0,0,0);
                    return 0;
                }" GSL_HAVE_OGGVORBIS_RC3
            )
            if( NOT GSL_HAVE_OGGVORBIS_RC3 )
                set( GSL_HAVE_OGGVORBIS_RC3 0 )
            endif()
            set( CMAKE_REQUIRED_LIBRARIES ${bak_CMAKE_REQUIRED_LIBRARIES} )
         else()
            tde_message_fatal( "Ogg/Vorbis support has been requested, but `libvorbisfile` was not found" )
        endif()
     else()
        tde_message_fatal( "Ogg/Vorbis support has been requested, but `libvorbis` was not found" )
    endif()
endif( WITH_VORBIS )


##### check for libmad

set( GSL_HAVE_LIBMAD 0 )

if( WITH_MAD )
    pkg_search_module( MAD mad )
    if( MAD_FOUND )
        set( GSL_HAVE_LIBMAD 1 )
     else()
        find_library( MAD_LIBRARIES NAMES mad )
        find_path( MAD_INCLUDE_DIRS mad.h )
        if( NOT MAD_LIBRARIES )
            tde_message_fatal( "Mad support has been requested, but `libmad` was not found" )
        endif()
    endif()
endif( WITH_MAD )


##### check for some type sizes #################

include( CheckTypeSize )

check_type_size( pthread_mutex_t GSL_SIZEOF_PTH_MUTEX_T )
check_type_size( pthread_cond_t GSL_SIZEOF_PTH_COND_T )
check_type_size( intmax_t GSL_SIZEOF_STD_INTMAX_T )

set( bak_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} )
set( CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT} )
check_c_source_compiles(
  "#define _XOPEN_SOURCE 500
  #include <pthread.h>
  int main()
  {
      int (*attr_settype) (pthread_mutexattr_t *__attr, int __kind) = pthread_mutexattr_settype;
      int val = PTHREAD_MUTEX_RECURSIVE; attr_settype = 0; val = 0;
      return 0;
  }"
  GSL_HAVE_MUTEXATTR_SETTYPE )
  if( NOT GSL_HAVE_MUTEXATTR_SETTYPE )
    set( GSL_HAVE_MUTEXATTR_SETTYPE 0 )
  endif( NOT GSL_HAVE_MUTEXATTR_SETTYPE )
set( CMAKE_REQUIRED_LIBRARIES ${bak_CMAKE_REQUIRED_LIBRARIES} )

set( GSL_USE_GSL_GLIB 1 )
set( GSL_USE_ARTS_THREADS 1 )


##### check for sse on x86 cpus

if( ${CMAKE_ARCHITECTURE} MATCHES "i.86" )
    check_c_source_compiles("
        int main()
        {
            __asm__(\"movups %xmm0, (%esp)\");
            return 0;
        }" HAVE_X86_SSE
    )
endif( ${CMAKE_ARCHITECTURE} MATCHES "i.86" )