message(STATUS "")
message("Configuring support for the following optional third-party packages:")

# Settings to change USE_PACKAGE behavior (these options override cached values)
set(CONFIG_ENABLE_EVERYTHING Off)
set(CONFIG_DISABLE_EVERYTHING Off)
set(CONFIG_ENABLE_FOUND Off)
set(CONFIG_DISABLE_MISSING Off)

# Update USE_PACKAGE settings based on CLI arguments
if(EVERYTHING)
  message("Re-enabling all disabled third-party libraries.")
  set(CONFIG_ENABLE_EVERYTHING On)
elseif(DISCOVERED)
  message("Enabling found and disabling not-found third-party libraries.")
  set(CONFIG_ENABLE_FOUND On)
  set(CONFIG_DISABLE_MISSING On)
elseif(NOTHING)
  message("Disabling all third-party libraries.")
  set(CONFIG_DISABLE_EVERYTHING On)
endif()


include(ConfigurePackage)


# Find and configure Eigen library
find_package(Eigen3 QUIET)
config_package(EIGEN "Eigen")
if(HAVE_EIGEN)
  if(WIN32)
    set(EIGEN_CFLAGS "/arch:SSE2")
  else()
    set(EIGEN_CFLAGS "-msse2")
  endif()

  if(CONFIG_ENABLE_EVERYTHING OR CONFIG_ENABLE_FOUND)
    unset(BUILD_EIGEN_VECTORIZATION)
  elseif(CONFIG_DISABLE_EVERYTHING)
    option(BUILD_EIGEN_VECTORIZATION "If on, vectorization is enabled in build." OFF)
  endif()

  if(NOT DEFINED BUILD_EIGEN_VECTORIZATION)
    message(STATUS "+   (vectorization enabled in build)")
  endif()

  option(BUILD_EIGEN_VECTORIZATION "If on, vectorization is enabled in build." ON)

  if(BUILD_EIGEN_VECTORIZATION)
    set(LINMATH_ALIGN TRUE)
  endif()
else()
  unset(BUILD_EIGEN_VECTORIZATION CACHE)
endif()


# Find and configure OpenSSL library
find_package(OpenSSL QUIET COMPONENTS ssl crypto)
config_package(OPENSSL "OpenSSL")
if(HAVE_OPENSSL)
  if(CONFIG_ENABLE_EVERYTHING OR CONFIG_ENABLE_FOUND)
    unset(BUILD_OPENSSL_ERROR_REPORTS)
  endif()

  if(CMAKE_BUILD_TYPE MATCHES "Debug" OR CMAKE_BUILD_TYPE MATCHES "RelWithDebInfo")
    option(BUILD_OPENSSL_ERROR_REPORTS "If on, OpenSSL reports verbose error messages when they occur." ON)
  else()
    set(BUILD_OPENSSL_ERROR_REPORTS "If on, OpenSSL reports verbose error messages when they occur." OFF)
  endif()

  if(BUILD_OPENSSL_ERROR_REPORTS)
    set(REPORT_OPENSSL_ERRORS TRUE)
  endif()
else()
  unset(BUILD_OPENSSL_ERROR_REPORTS CACHE)
endif()


# Find and configure JPEG library
find_package(JPEG QUIET)
config_package(JPEG "libjpeg")

# Find and configure PNG library
find_package(PNG QUIET)
config_package(PNG "libpng")

# Find and configure TIFF library
find_package(TIFF QUIET COMPONENTS tiff z)
config_package(TIFF "libtiff")

# Find and configure Tar library
find_package(Tar QUIET)
config_package(TAR "libtar")

# Find and configure FFTW library
find_package(FFTW QUIET)
config_package(FFTW "fftw")

# Find and configure Squish library
find_package(Squish QUIET)
config_package(SQUISH "squish")

# Find and configure Cg library
find_package(Cg QUIET)
config_package(CG "Nvidia Cg Shading Langauge")
config_package(CGGL "Cg OpenGL API")
config_package(CGDX8 "Cg DX8 API")
config_package(CGDX9 "Cg DX9 API")
config_package(CGDX10 "Cg DX10 API")

# Find and configure VRPN library
find_package(VRPN QUIET)
config_package(VRPN)

# Find and configure zlib
find_package(ZLIB QUIET)
config_package(ZLIB "zlib")

# Find and configure Miles Sound System
find_package(Miles QUIET)
config_package(RAD_MSS "Miles Sound System")

# Find and configure FMOD Ex
find_package(FMODEx QUIET)
config_package(FMODEX "FMOD Ex sound library")

# Find and configure OpenAL
find_package(OpenAL QUIET)
config_package(OPENAL "OpenAL sound library")

# Find and configure GTK
set(Freetype_FIND_QUIETLY TRUE) # Fix for builtin FindGTK2
set(GTK2_GTK_FIND_QUIETLY TRUE) # Fix for builtin FindGTK2
find_package(GTK2 QUIET COMPONENTS gtk)
if(GTK2_FOUND)
  set(GTK_FOUND TRUE) # Mangle for convenience
endif()
config_package(GTK "gtk+-2")

# Find and configure Freetype
find_package(Freetype QUIET)
config_package(FREETYPE "Freetype")
if(HAVE_FREETYPE AND NOT WIN32)
  set(FREETYPE_CONFIG freetype-config)
endif()


########
# TODO #
########

# Find and configure PhysX
#find_package(PhysX)
#config_package(PHYSX COMMENT "Aegia PhysX")

# Find and configure SpeedTree
#find_package(SpeedTree)
#config_package(SPEEDTREE COMMENT "SpeedTree")

# Find and configure WxWidgets
#find_package(WxWidgets)
#config_package(WX COMMENT "WxWidgets")

# Find and configure FLTK
#find_package(FLTK)
#config_package(FLTK)

# Find and configure OpenGL
#find_package(OpenGL)
#config_package(OPENGL COMMENT "OpenGL")

# Find and configure OpenGL ES 1
#find_package(GLES)
#config_package(GLES COMMENT "OpenGL ES 1")

# Find and configure OpenGL ES 2
#find_package(GLES)
#config_package(GLES COMMENT "OpenGL ES 2")

# Find and configure DirectX 8
#find_package(DX8)
#config_package(DX8 COMMENT "DirectX8")

# Find and configure DirectX 9
#find_package(DX9)
#config_package(DX9 COMMENT "DirectX9")

# Find and configure DirectX 11
#find_package(DX11)
#config_package(DX11 COMMENT "DirectX11")

# Find and configure Tinydisplay
#find_package(Tinydisplay)
#config_package(TINYDISPLAY COMMENT "Tinydisplay")

#### Was commented out in original 'Config.pp' not sure why
# Find and configure SDL
#find_package(SDL)
#config_package(SDL)

# Find and configure Mesa
#find_package(Mesa)
#config_package(MESA COMMENT "Mesa")

# Find and configure OpenCV
#find_package(OpenCV)
#config_package(OPENCV COMMENT "OpenCV")

# Find and configure FFMPEG
#find_package(FFMPEG)
#config_package(FFMPEG)

# Find and configure ODE
#find_package(ODE)
#config_package(ODE)

# Find and configure Awesomium
#find_package(Awesomium)
#config_package(AWESOMIUM COMMENT "Awesomium")

# Find and configure OpenMaya
#find_package(OpenMaya)
#config_package(MAYA COMMENT "OpenMaya")

# Find and configure FCollada
#find_package(FCollada)
#config_package(FCOLLADA COMMENT "FCollada")
#if(FOUND_COLLADA14DOM OR FOUND_COLLADA15DOM)
# set(USE_COLLADA TRUE CACHE BOOL "If true, compile Panda3D with COLLADA DOM")
# if(USE_COLLADA)
#   if(FOUND_COLLADA15DOM)
#     set(HAVE_COLLADA15DOM TRUE)
#   else()
#     set(HAVE_COLLADA14DOM TRUE)
#   endif()
# endif()
#endif()

# Find and configure Assimp
#find_package(Assimp)
#config_package(ASSIMP COMMENT "Assimp")

# Find and configure ARToolKit
#find_package(ARToolKit)
#config_package(ARTOOLKIT COMMENT "ARToolKit")

# Find and configure libRocket
#find_package(Rocket)
#config_package(ROCKET COMMENT "libRocket")
#if(HAVE_ROCKET AND HAVE_PYTHON)
# # Check for rocket python bindings
# if(FOUND_ROCKET_PYTHON)
#   option(USE_ROCKET_PYTHON "If on, compile Panda3D with python bindings for libRocket" ON)
#   if(USE_ROCKET_PYTHON)
#     set(HAVE_ROCKET_PYTHON TRUE)
#   endif()
#   else()
#       unset(USE_ROCKET_PYTHON CACHE)
# endif()
# if(HAVE_ROCKET_PYTHON)
#   message(STATUS "+ libRocket with Python bindings")
# else()
#   message(STATUS "+ libRocket without Python bindings")
# endif()
#else()
# unset(USE_ROCKET_PYTHON CACHE)
#endif()

# Find and configure Bullet
#find_package(Bullet)
#config_package(BULLET COMMENT "Bullet Physics")

# Find and configure Vorbis
#find_package(Vorbis)
#config_package(VORBIS COMMENT "Vorbis Ogg decoder")


### Configure interrogate ###
message(STATUS "") # simple line break
if(HAVE_PYTHON)
  option(USE_INTERROGATE "If on, Panda3D will generate python interfaces" ON)
  if(USE_INTERROGATE)
    set(HAVE_INTERROGATE TRUE)
  endif()
else()
  unset(USE_INTERROGATE CACHE)
endif()
if(HAVE_INTERROGATE)
  message(STATUS "Compilation will generate Python interfaces.")
else()
  message(STATUS "Configuring Panda without Python interfaces.")
endif()


### Configure threading support ###
# Add basic use flag for threading
option(BUILD_THREADS "If on, compile Panda3D with threading support." ON)
if(BUILD_THREADS)
  set(HAVE_THREADS TRUE)
else()
  unset(BUILD_SIMPLE_THREADS CACHE)
  unset(BUILD_OS_SIMPLE_THREADS CACHE)
endif()

# Configure debug threads
if(CMAKE_BUILD_TYPE MATCHES "Debug")
  option(BUILD_DEBUG_THREADS "If on, enables debugging of thread and sync operations (i.e. mutexes, deadlocks)" ON)
else()
  option(BUILD_DEBUG_THREADS "If on, enables debugging of thread and sync operations (i.e. mutexes, deadlocks)" OFF)
endif()
if(BUILD_DEBUG_THREADS)
  set(DEBUG_THREADS TRUE)
endif()

# Add advanced threading configuration
if(HAVE_THREADS)
  option(BUILD_SIMPLE_THREADS "If on, compile with simulated threads." OFF)
  if(BUILD_SIMPLE_THREADS)
    message(STATUS "Compilation will include simulated threading support.")
    option(BUILD_OS_SIMPLE_THREADS "If on, OS threading constructs will be used to perform context switches." ON)

    set(SIMPLE_THREADS TRUE)
    if(BUILD_OS_SIMPLE_THREADS)
      set(OS_SIMPLE_THREADS TRUE)
    endif()
  else()
    unset(BUILD_OS_SIMPLE_THREADS CACHE)

    option(BUILD_PIPELINING "If on, compile with pipelined rendering." ON)
    if(BUILD_PIPELINING)
      message(STATUS "Compilation will include full, pipelined threading support.")
    else()
      message(STATUS "Compilation will include nonpipelined threading support.")
    endif()
  endif()
else()
  message(STATUS "Configuring Panda without threading support.")
endif()

set(HAVE_POSIX_THREADS FALSE)
if(NOT WIN32)
  find_path(PTHREAD_IPATH
    NAMES "pthread.h"
    PATHS "/usr/include"
  )
  if(PTHREAD_IPATH)
    set(HAVE_POSIX_THREADS TRUE)
    set(THREAD_LIBS pthread)
    set(CMAKE_CXX_FLAGS "-pthread")
    set(CMAKE_CXX_FLAGS_DEBUG "-pthread")
    set(CMAKE_CXX_FLAGS_RELEASE "-pthread")
    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-pthread")
    set(CMAKE_CXX_FLAGS_MINSIZEREL "-pthread")

    mark_as_advanced(PTHREAD_IPATH)
  endif()
endif()


### Configure pipelining ###
if(NOT DEFINED BUILD_PIPELINING)
  option(BUILD_PIPELINING "If on, compile with pipelined rendering." ON)
endif()
if(BUILD_PIPELINING)
  set(DO_PIPELINING TRUE)
endif()

### Configure OS X options ###
if(APPLE)
  option(BUILD_UNIVERSIAL_BINARIES "If on, compiling will create universal OS X binaries." ON)
  if(BUILD_UNIVERSAL_BINARIES)
    message(STATUS "Compilation will create universal binaries.")
    set(UNIVERSAL_BINARIES TRUE)
  else()
    message(STATUS "Compilation will not create universal binaries.")
  endif()
endif()

message(STATUS "")
message(STATUS "See dtool_config.h for more details about the specified configuration.\n")

include(CheckIncludeFileCXX)
check_include_file_cxx(io.h PHAVE_IO_H)
check_include_file_cxx(iostream PHAVE_IOSTREAM)
check_include_file_cxx(malloc.h PHAVE_MALLOC_H)
check_include_file_cxx(sys/malloc.h PHAVE_SYS_MALLOC_H)
check_include_file_cxx(alloca.h PHAVE_ALLOCA_H)
check_include_file_cxx(locale.h PHAVE_LOCALE_H)
check_include_file_cxx(string.h PHAVE_STRING_H)
check_include_file_cxx(stdlib.h PHAVE_STDLIB_H)
check_include_file_cxx(limits.h PHAVE_LIMITS_H)
check_include_file_cxx(minmax.h PHAVE_MINMAX_H)
check_include_file_cxx(sstream PHAVE_SSTREAM)
check_include_file_cxx(new PHAVE_NEW)
check_include_file_cxx(sys/types.h PHAVE_SYS_TYPES_H)
check_include_file_cxx(sys/time.h PHAVE_SYS_TIME_H)
check_include_file_cxx(unistd.h PHAVE_UNISTD_H)
check_include_file_cxx(utime.h PHAVE_UTIME_H)
check_include_file_cxx(glob.h PHAVE_GLOB_H)
check_include_file_cxx(dirent.h PHAVE_DIRENT_H)
check_include_file_cxx(drfftw.h PHAVE_DRFFTW_H)
check_include_file_cxx(sys/soundcard.h PHAVE_SYS_SOUNDCARD_H)
check_include_file_cxx(ucontext.h PHAVE_UCONTEXT_H)
check_include_file_cxx(linux/input.h PHAVE_LINUX_INPUT_H)
check_include_file_cxx(stdint.h PHAVE_STDINT_H)

# TODO: Actually check for these, instead of assuming
set(HAVE_NAMESPACE ON)
set(HAVE_LOCKF ON)
set(HAVE_WCHAR_T ON)
set(HAVE_WSTRING ON)
set(HAVE_TYPENAME ON)
set(SIMPLE_STRUCT_POINTERS ON)
set(HAVE_STREAMSIZE ON)
set(HAVE_IOS_TYPEDEFS ON)

if(WIN32)
  set(DEFAULT_PATHSEP ";")
else()
  set(DEFAULT_PATHSEP ":")
endif()

configure_file(dtool_config.h.cmake ${CMAKE_BINARY_DIR}/include/dtool_config.h)