cmake_minimum_required(VERSION 2.8.2)

if(COMMAND CMAKE_POLICY)
  cmake_policy(SET CMP0003 NEW)
  if (NOT (${CMAKE_VERSION} VERSION_LESS 3.0))
    cmake_policy(SET CMP0042 NEW)
  endif()
endif()

if(NOT OPENJPEG_NAMESPACE)
  set(OPENJPEG_NAMESPACE "OPENJPEG")
  set(OPENJPEG_STANDALONE 1)
endif()
# In all cases:
#string(TOLOWER ${OPENJPEG_NAMESPACE} OPENJPEG_LIBRARY_NAME)
set(OPENJPEG_LIBRARY_NAME openjp2)

project(${OPENJPEG_NAMESPACE} C)

# Do full dependency headers.
include_regular_expression("^.*$")

#-----------------------------------------------------------------------------
# OPENJPEG version number, useful for packaging and doxygen doc:
set(OPENJPEG_VERSION_MAJOR 2)
set(OPENJPEG_VERSION_MINOR 5)
set(OPENJPEG_VERSION_BUILD 0)
set(OPENJPEG_VERSION
  "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}")
set(PACKAGE_VERSION
  "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}")

if(NOT OPENJPEG_SOVERSION)
  set(OPENJPEG_SOVERSION 7)
endif(NOT OPENJPEG_SOVERSION)
set(OPENJPEG_LIBRARY_PROPERTIES
  VERSION   "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}"
  SOVERSION "${OPENJPEG_SOVERSION}"
)

# --------------------------------------------------------------------------
# Path to additional CMake modules
set(CMAKE_MODULE_PATH
    ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake
    ${CMAKE_MODULE_PATH})

# --------------------------------------------------------------------------
# On Visual Studio 8 MS deprecated C. This removes all 1.276E1265 security
# warnings
if(WIN32)
  if(NOT BORLAND)
    if(NOT CYGWIN)
      if(NOT MINGW)
        if(NOT ITK_ENABLE_VISUAL_STUDIO_DEPRECATED_C_WARNINGS)
          add_definitions(
            -D_CRT_FAR_MAPPINGS_NO_DEPRECATE
            -D_CRT_IS_WCTYPE_NO_DEPRECATE
            -D_CRT_MANAGED_FP_NO_DEPRECATE
            -D_CRT_NONSTDC_NO_DEPRECATE
            -D_CRT_SECURE_NO_DEPRECATE
            -D_CRT_SECURE_NO_DEPRECATE_GLOBALS
            -D_CRT_SETERRORMODE_BEEP_SLEEP_NO_DEPRECATE
            -D_CRT_TIME_FUNCTIONS_NO_DEPRECATE
            -D_CRT_VCCLRIT_NO_DEPRECATE
            -D_SCL_SECURE_NO_DEPRECATE
            )
        endif()
      endif()
    endif()
  endif()
endif()


# --------------------------------------------------------------------------
# Install directories
if(NOT OPENJPEG_INSTALL_LIB_DIR)
  set(OPENJPEG_INSTALL_LIB_DIR "lib")
endif()

set(OPENJPEG_INSTALL_PACKAGE_DIR "../interface")

set(OPENJPEG_INSTALL_INCLUDE_DIR
    "../interface"
)

option(BUILD_JPWL off)
option(BUILD_MJ2 off)
option(BUILD_JPIP off)
option(BUILD_JP3D off)

#-----------------------------------------------------------------------------
# Big endian test:
if (NOT EMSCRIPTEN)
include (${CMAKE_ROOT}/Modules/TestBigEndian.cmake)
TEST_BIG_ENDIAN(OPJ_BIG_ENDIAN)
endif()


#-----------------------------------------------------------------------------
# opj_config.h generation (1/2)

# Check if some include files are provided by the system
include(EnsureFileInclude)
# These files are mandatory
ensure_file_include("string.h"   HAVE_STRING_H YES)
ensure_file_include("memory.h"   HAVE_MEMORY_H YES)
ensure_file_include("stdlib.h"   HAVE_STDLIB_H YES)
ensure_file_include("stdio.h"    HAVE_STDIO_H  YES)
ensure_file_include("math.h"     HAVE_MATH_H   YES)
ensure_file_include("float.h"    HAVE_FLOAT_H  YES)
ensure_file_include("time.h"     HAVE_TIME_H   YES)
ensure_file_include("stdarg.h"   HAVE_STDARG_H YES)
ensure_file_include("ctype.h"    HAVE_CTYPE_H  YES)
ensure_file_include("assert.h"   HAVE_ASSERT_H YES)

# For the following files, we provide an alternative, they are not mandatory
ensure_file_include("stdint.h"   OPJ_HAVE_STDINT_H   NO)
ensure_file_include("inttypes.h" OPJ_HAVE_INTTYPES_H NO)

# why check this one ? for openjpip ?
include (${CMAKE_ROOT}/Modules/CheckIncludeFile.cmake)
CHECK_INCLUDE_FILE("strings.h"      HAVE_STRINGS_H)
CHECK_INCLUDE_FILE("sys/stat.h"     HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILE("sys/types.h"    HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILE("unistd.h"       HAVE_UNISTD_H)

# Enable Large file support
include(TestLargeFiles)
OPJ_TEST_LARGE_FILES(OPJ_HAVE_LARGEFILES)

# Allocating Aligned Memory Blocks
include(CheckIncludeFiles)
check_include_files(malloc.h OPJ_HAVE_MALLOC_H)
include(CheckSymbolExists)
# _aligned_alloc https://msdn.microsoft.com/en-us/library/8z34s9c6.aspx
check_symbol_exists(_aligned_malloc malloc.h OPJ_HAVE__ALIGNED_MALLOC)
# posix_memalign (needs _POSIX_C_SOURCE >= 200112L on Linux)
set(CMAKE_REQUIRED_DEFINITIONS -D_POSIX_C_SOURCE=200112L)
check_symbol_exists(posix_memalign stdlib.h OPJ_HAVE_POSIX_MEMALIGN)
unset(CMAKE_REQUIRED_DEFINITIONS)
# memalign (obsolete)
check_symbol_exists(memalign malloc.h OPJ_HAVE_MEMALIGN)


#-----------------------------------------------------------------------------
# opj_config.h generation (2/2)
configure_file(
 ${CMAKE_CURRENT_SOURCE_DIR}/src/lib/openjp2/opj_config.h.cmake.in
 ../../interface/opj_config.h
 @ONLY
 )

 configure_file(
 ${CMAKE_CURRENT_SOURCE_DIR}/src/lib/openjp2/opj_config_private.h.cmake.in
 ../../interface/opj_config_private.h
 @ONLY
 )
