
IF (WIN32)
    CMAKE_MINIMUM_REQUIRED(VERSION 3.11)
ELSE()
    CMAKE_MINIMUM_REQUIRED(VERSION 3.2)
ENDIF()

PROJECT ( ilmbase )

set(ILMBASE_BASEVERSION   ${OPENEXR_BASEVERSION})
set(ILMBASE_VERSION_MAJOR ${OPENEXR_VERSION_MAJOR})
set(ILMBASE_VERSION_MINOR ${OPENEXR_VERSION_MINOR})
set(ILMBASE_VERSION_PATCH ${OPENEXR_VERSION_PATCH})
set(ILMBASE_VERSION       ${OPENEXR_VERSION})
set(ILMBASE_VERSION_API   ${OPENEXR_VERSION_API})

INCLUDE_DIRECTORIES ( Iex IexMath Imath Half
    IlmThread IexTest ImathTest HalfTest
    ${CMAKE_CURRENT_BINARY_DIR}/config )

IF(WIN32)
  SET(CMAKE_DEBUG_POSTFIX "_d")
ENDIF()

# also add the current directory to pick up the autogenerated headers
SET(CMAKE_INCLUDE_CURRENT_DIR ON)

MACRO(GET_TARGET_PROPERTY_WITH_DEFAULT _variable _target _property _default_value)
   GET_TARGET_PROPERTY (${_variable} ${_target} ${_property})
   IF (${_variable} MATCHES NOTFOUND)
     SET (${_variable} ${_default_value})
   ENDIF (${_variable} MATCHES NOTFOUND)
 ENDMACRO (GET_TARGET_PROPERTY_WITH_DEFAULT)

 MACRO(CREATE_LIBTOOL_FILE _target _install_DIR)
   SET(_target_location $<TARGET_FILE:${_target}>)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_static_lib ${_target} STATIC_LIB "")
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_dependency_libs ${_target} LT_DEPENDENCY_LIBS "")
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_current ${_target} LT_VERSION_CURRENT 0)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_age ${_target} LT_VERSION_AGE 0)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_revision ${_target} LT_VERSION_REVISION 0)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_installed ${_target} LT_INSTALLED yes)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_shouldnotlink ${_target} LT_SHOULDNOTLINK yes)
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_dlopen ${_target} LT_DLOPEN "")
   GET_TARGET_PROPERTY_WITH_DEFAULT(_target_dlpreopen ${_target} LT_DLPREOPEN "")
   SET(_laname ${_target}${OPENEXR_LIBSUFFIX})
   SET(_soname ${_laname})
   SET(_laname ${PROJECT_BINARY_DIR}/${_laname}.la)
   FILE(WRITE ${_laname} "# ${_laname} - a libtool library file\n")
   FILE(APPEND ${_laname} "# Generated by CMake ${CMAKE_VERSION} (like GNU libtool)\n")
   FILE(APPEND ${_laname} "\n# Please DO NOT delete this file!\n# It is necessary for linking the library with libtool.\n\n" )
   FILE(APPEND ${_laname} "# The name that we can dlopen(3).\n")
   FILE(APPEND ${_laname} "dlname='${_soname}'\n\n")
   FILE(APPEND ${_laname} "# Names of this library.\n")
   FILE(APPEND ${_laname} "library_names='${_soname}.${_target_current}.${_target_age}.${_target_revision} ${_soname}.${_target_current} ${_soname}'\n\n")
   FILE(APPEND ${_laname} "# The name of the static archive.\n")
   FILE(APPEND ${_laname} "old_library='${_target_static_lib}'\n\n")
   FILE(APPEND ${_laname} "# Libraries that this one depends upon.\n")
   FILE(APPEND ${_laname} "dependency_libs='${_target_dependency_libs}'\n\n")
   FILE(APPEND ${_laname} "# Names of additional weak libraries provided by this library\n")
   FILE(APPEND ${_laname} "weak_library_names=\n\n")
   FILE(APPEND ${_laname} "# Version information for ${_laname}.\n")
   FILE(APPEND ${_laname} "current=${_target_current}\n")
   FILE(APPEND ${_laname} "age=${_target_age}\n")
   FILE(APPEND ${_laname} "revision=${_target_revision}\n\n")
   FILE(APPEND ${_laname} "# Is this an already installed library?\n")
   FILE(APPEND ${_laname} "installed=${_target_installed}\n\n")
   FILE(APPEND ${_laname} "# Should we warn about portability when linking against -modules?\n")
   FILE(APPEND ${_laname} "shouldnotlink=${_target_shouldnotlink}\n\n")
   FILE(APPEND ${_laname} "# Files to dlopen/dlpreopen\n")
   FILE(APPEND ${_laname} "dlopen='${_target_dlopen}'\n")
   FILE(APPEND ${_laname} "dlpreopen='${_target_dlpreopen}'\n\n")
   FILE(APPEND ${_laname} "# Directory that this library needs to be installed in:\n")
   FILE(APPEND ${_laname} "libdir='${CMAKE_INSTALL_PREFIX}${_install_DIR}'\n")
   INSTALL( FILES ${_laname} DESTINATION ${CMAKE_INSTALL_PREFIX}${_install_DIR})
 ENDMACRO(CREATE_LIBTOOL_FILE)

ADD_SUBDIRECTORY ( Half )
ADD_SUBDIRECTORY ( Iex )
ADD_SUBDIRECTORY ( IexMath )
ADD_SUBDIRECTORY ( Imath )
ADD_SUBDIRECTORY ( IlmThread )


##########################
# IlmBaseConfig.h generation
##########################

# By using a temp file then using configure_file below with copy, we
# avoid constantly updating it (unless a value has changed)
SET(ILMBASE_TMP_CONFIG ${CMAKE_CURRENT_BINARY_DIR}/config/IlmBaseConfig.h.in)
IF (WIN32)
  FILE ( WRITE  ${ILMBASE_TMP_CONFIG} "#ifdef HAVE_PTHREAD\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "# undef HAVE_PTHREAD\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#endif\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#ifdef HAVE_POSIX_SEMAPHORES\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "# undef HAVE_POSIX_SEMAPHORES\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#endif\n" )
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define PLATFORM_WINDOWS 1\n" )
ELSE ()
  IF (APPLE)
    FILE ( WRITE  ${ILMBASE_TMP_CONFIG} "#define HAVE_PTHREAD 1\n" )
  ELSE ()
    FILE ( WRITE  ${ILMBASE_TMP_CONFIG} "#define HAVE_PTHREAD 1\n" )
    FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_HAVE_LARGE_STACK  1\n" )
    FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define HAVE_POSIX_SEMAPHORES 1\n" )
    FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_HAVE_CONTROL_REGISTER_SUPPORT 1\n")
  ENDIF ()
ENDIF ()

IF (OPENEXR_FORCE_CXX03)
  FILE ( APPEND  ${ILMBASE_TMP_CONFIG} "#define ILMBASE_FORCE_CXX03 1\n" )
ELSEIF (NOT WIN32)
  # really only care about c++11 right now for the threading bits, but this can be changed to 14
  # when needed...
  # Note that the __cplusplus check is not valid under MSVC
  FILE ( APPEND  ${ILMBASE_TMP_CONFIG} "#if __cplusplus < 201103L\n# error \"Modern C++ 11/14 not enabled but force cxx03 not set\"\n#endif\n" )
ENDIF ()

IF (OPENEXR_NAMESPACE_VERSIONING)
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_INTERNAL_NAMESPACE_CUSTOM 1\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IMATH_INTERNAL_NAMESPACE Imath_${ILMBASE_VERSION_API}\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IEX_INTERNAL_NAMESPACE Iex_${ILMBASE_VERSION_API}\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMTHREAD_INTERNAL_NAMESPACE IlmThread_${ILMBASE_VERSION_API}\n")
ELSE ()
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_INTERNAL_NAMESPACE_CUSTOM 0\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IMATH_INTERNAL_NAMESPACE Imath\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IEX_INTERNAL_NAMESPACE Iex\n")
  FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMTHREAD_INTERNAL_NAMESPACE IlmThread\n")
ENDIF ()

FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IMATH_NAMESPACE Imath\n")
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define IEX_NAMESPACE Iex\n")
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMTHREAD_NAMESPACE IlmThread\n")
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_VERSION_STRING \"${ILMBASE_VERSION}\"\n" )
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_PACKAGE_STRING \"IlmBase ${ILMBASE_VERSION}\"\n" )
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_VERSION_MAJOR ${ILMBASE_VERSION_MAJOR}\n" )
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_VERSION_MINOR ${ILMBASE_VERSION_MINOR}\n" )
FILE ( APPEND ${ILMBASE_TMP_CONFIG} "#define ILMBASE_VERSION_PATCH ${ILMBASE_VERSION_PATCH}\n" )

FILE ( APPEND ${ILMBASE_TMP_CONFIG} "
// Version as a single hex number, e.g. 0x01000300 == 1.0.3
#define ILMBASE_VERSION_HEX ((ILMBASE_VERSION_MAJOR << 24) | \\
                             (ILMBASE_VERSION_MINOR << 16) | \\
                             (ILMBASE_VERSION_PATCH <<  8))
")

CONFIGURE_FILE ( ${ILMBASE_TMP_CONFIG} ${CMAKE_CURRENT_BINARY_DIR}/config/IlmBaseConfig.h COPYONLY )
FILE ( REMOVE ${ILMBASE_TMP_CONFIG} )
UNSET ( ILMBASE_TMP_CONFIG )

IF ( NOT WIN32 AND OPENEXR_BUILD_SHARED )
  CREATE_LIBTOOL_FILE ( Half /lib )
  CREATE_LIBTOOL_FILE ( Iex /lib )
  CREATE_LIBTOOL_FILE ( IexMath /lib )
  CREATE_LIBTOOL_FILE ( Imath /lib )
  CREATE_LIBTOOL_FILE ( IlmThread /lib )
ENDIF ()


# Tests
IF ( ENABLE_TESTS )
  ADD_SUBDIRECTORY ( HalfTest )
  ADD_SUBDIRECTORY ( IexTest )
  ADD_SUBDIRECTORY ( ImathTest )
ENDIF ()

# Installation

INSTALL ( FILES
  ${CMAKE_CURRENT_BINARY_DIR}/config/IlmBaseConfig.h
  DESTINATION
  include/OpenEXR
)

IF ( NOT WIN32 )
  FILE ( WRITE ${CMAKE_BINARY_DIR}/IlmBase.pc "prefix=${CMAKE_INSTALL_PREFIX}\n" )
  FILE ( APPEND ${CMAKE_BINARY_DIR}/IlmBase.pc "exec_prefix=\${prefix}
libdir=\${exec_prefix}/lib
includedir=\${prefix}/include
OpenEXR_includedir=\${prefix}/include/OpenEXR

Name: IlmBase
Description: Base math and exception libraries
Version: ${ILMBASE_VERSION}
Libs: -L\${libdir} -lImath${ILMBASE_LIBSUFFIX} -lIexMath${ILMBASE_LIBSUFFIX} -lHalf${ILMBASE_LIBSUFFIX} -lIex${ILMBASE_LIBSUFFIX} -lIlmThread${ILMBASE_LIBSUFFIX} -pthread
Cflags: -pthread -I\${OpenEXR_includedir}
")

  INSTALL ( FILES
    ${CMAKE_BINARY_DIR}/IlmBase.pc
    DESTINATION
    lib/pkgconfig
  )
ENDIF()
