cmake_minimum_required(VERSION 3.14) # I like pie

project(PocketSphinx VERSION 5.0.0
  DESCRIPTION "A small speech recognizer"
  HOMEPAGE_URL "https://github.com/cmusphinx/pocketsphinx"
  LANGUAGES C)
include(CMakePrintHelpers)
set(PACKAGE_NAME ${PROJECT_NAME})
string(TOLOWER ${PROJECT_NAME} PROJECT_SHORTNAME)
set(PACKAGE_VERSION ${PROJECT_VERSION})
set(PACKAGE_STRING "${PROJECT_NAME} ${PROJECT_VERSION}")
set(PACKAGE_TARNAME "${PROJECT_SHORTNAME}-${PROJECT_VERSION}")
set(PACKAGE_URL ${PROJECT_HOMEPAGE_URL})
set(PACKAGE_BUGREPORT dhdaines@gmail.com)

if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
  include(CTest)
  add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
endif()

include(CheckTypeSize)
include(CheckSymbolExists)
include(CheckLibraryExists)
include(TestBigEndian)
include(GNUInstallDirs)

CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
CHECK_INCLUDE_FILE(sys/types.h HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILE(sys/stat.h HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILE(stdint.h HAVE_STDINT_H)
CHECK_SYMBOL_EXISTS(snprintf stdio.h HAVE_SNPRINTF)
CHECK_SYMBOL_EXISTS(popen stdio.h HAVE_POPEN)
CHECK_TYPE_SIZE(long LONG)
CHECK_TYPE_SIZE("long long" LONG_LONG)
# OMG CMake is so incredibly awful
set(SIZEOF_LONG ${LONG})
set(SIZEOF_LONG_LONG ${LONG_LONG})
cmake_print_variables(SIZEOF_LONG SIZEOF_LONG_LONG)
test_big_endian(WORDS_BIGENDIAN)
cmake_print_variables(WORDS_BIGENDIAN)

# Don't do this
#if(CMAKE_BUILD_TYPE STREQUAL Debug)
#  set(SPHINX_DEBUG 1)
#endif()

# Compiles some code as the wrong endianness in order to ensure that
# it works properly
if(DEBUG_ENDIAN)
  add_definitions(-DDEBUG_ENDIAN)
endif()
cmake_print_variables(SPHINX_DEBUG DEBUG_ENDIAN)

if(MSVC)
  add_compile_options(/W3)
else()
  add_compile_options(-Wall -Wextra)
endif()

option(FIXED_POINT "Build using fixed-point math" OFF)
if(NOT DEFAULT_RADIX)
  set(DEFAULT_RADIX 12)
endif()
cmake_print_variables(FIXED_POINT DEFAULT_RADIX)

# Maybe not a great idea, but it does work on both Windows and Linux
set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

configure_file(config.h.in config.h)
configure_file(sphinx_config.h.in include/pocketsphinx/sphinx_config.h)
add_definitions(-DHAVE_CONFIG_H)

if(SKBUILD)
  # Python build

  # Allow compiling against systemwide libpocketsphinx.so for Docker
  # or distribution packages
  option(USE_INSTALLED_POCKETSPHINX "Build using installed PocketSphinx library" OFF)
  if(USE_INSTALLED_POCKETSPHINX)
    find_package(PkgConfig)
    # Get the libraries and headers
    pkg_check_modules(POCKETSPHINX pocketsphinx)
    # Set the model directory to the systemwide one.  Don't try to use
    # CMAKE_INSTALL_FULL_DATADIR!  That is not what you want.
    pkg_get_variable(MODELDIR pocketsphinx modeldir)
  else()
    add_subdirectory(src)
  endif()
  add_subdirectory(cython)
else()
  # C build

  # Set the default model directory to the install location
  set(MODELDIR ${CMAKE_INSTALL_FULL_DATADIR}/pocketsphinx/model)
  option(BUILD_SHARED_LIBS "Build using shared libraries" OFF)
  if(BUILD_SHARED_LIBS)
    add_definitions(-DSPHINX_DLL)
  endif()
  add_subdirectory(src)
  add_subdirectory(model)
  add_subdirectory(doxygen)
  add_subdirectory(programs)
  add_subdirectory(examples)
  if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
    add_subdirectory(test)
  endif()
  configure_file(pocketsphinx.pc.in pocketsphinx.pc @ONLY)
  install(TARGETS pocketsphinx LIBRARY)
  install(DIRECTORY include TYPE INCLUDE)
  install(DIRECTORY ${CMAKE_BINARY_DIR}/include TYPE INCLUDE)
  install(FILES ${CMAKE_BINARY_DIR}/pocketsphinx.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)

  option(BUILD_GSTREAMER "Build GStreamer plugin" OFF)
  if(BUILD_GSTREAMER)
    add_subdirectory(gst)
  endif()
endif()

# Can print this at the end, just to know what it was
cmake_print_variables(MODELDIR)