Source/cmake/FindICU.cmake

   1 # Finds the International Components for Unicode (ICU) Library
   2 #
   3 #  ICU_FOUND          - True if ICU found.
   4 #  ICU_I18N_FOUND     - True if ICU's internationalization library found.
   5 #  ICU_INCLUDE_DIRS   - Directory to include to get ICU headers
   6 #                       Note: always include ICU headers as, e.g.,
   7 #                       unicode/utypes.h
   8 #  ICU_LIBRARIES      - Libraries to link against for the common ICU
   9 #  ICU_I18N_LIBRARIES - Libraries to link against for ICU internationaliation
  10 #                       (note: in addition to ICU_LIBRARIES)
  11
  12 # Look for the header file.
  13 FIND_PATH(
  14     ICU_INCLUDE_DIR
  15     NAMES unicode/utypes.h
  16     DOC "Include directory for the ICU library")
  17 MARK_AS_ADVANCED(ICU_INCLUDE_DIR)
  18
  19 # Look for the library.
  20 FIND_LIBRARY(
  21     ICU_LIBRARY
  22     NAMES icuuc cygicuuc cygicuuc32
  23     DOC "Libraries to link against for the common parts of ICU")
  24 MARK_AS_ADVANCED(ICU_LIBRARY)
  25
  26 # Copy the results to the output variables.
  27 IF (ICU_INCLUDE_DIR AND ICU_LIBRARY)
  28     SET(ICU_FOUND 1)
  29     SET(ICU_LIBRARIES ${ICU_LIBRARY})
  30     SET(ICU_INCLUDE_DIRS ${ICU_INCLUDE_DIR})
  31
  32     SET(ICU_VERSION 0)
  33     SET(ICU_MAJOR_VERSION 0)
  34     SET(ICU_MINOR_VERSION 0)
  35     FILE(READ "${ICU_INCLUDE_DIR}/unicode/uversion.h" _ICU_VERSION_CONENTS)
  36     STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MAJOR_NUM ([0-9]+).*" "\\1" ICU_MAJOR_VERSION "${_ICU_VERSION_CONENTS}")
  37     STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MINOR_NUM ([0-9]+).*" "\\1" ICU_MINOR_VERSION "${_ICU_VERSION_CONENTS}")
  38
  39     SET(ICU_VERSION "${ICU_MAJOR_VERSION}.${ICU_MINOR_VERSION}")
  40
  41     # Look for the ICU internationalization libraries
  42     FIND_LIBRARY(
  43         ICU_I18N_LIBRARY
  44         NAMES icuin icui18n cygicuin cygicuin32
  45         DOC "Libraries to link against for ICU internationalization")
  46     MARK_AS_ADVANCED(ICU_I18N_LIBRARY)
  47     IF (ICU_I18N_LIBRARY)
  48         SET(ICU_I18N_FOUND 1)
  49         SET(ICU_I18N_LIBRARIES ${ICU_I18N_LIBRARY})
  50     ELSE ()
  51         SET(ICU_I18N_FOUND 0)
  52         SET(ICU_I18N_LIBRARIES)
  53     ENDIF ()
  54 ELSE ()
  55     SET(ICU_FOUND 0)
  56     SET(ICU_I18N_FOUND 0)
  57     SET(ICU_LIBRARIES)
  58     SET(ICU_I18N_LIBRARIES)
  59     SET(ICU_INCLUDE_DIRS)
  60     SET(ICU_VERSION)
  61     SET(ICU_MAJOR_VERSION)
  62     SET(ICU_MINOR_VERSION)
  63 ENDIF ()
  64
  65 IF (ICU_FOUND)
  66     IF (NOT ICU_FIND_QUIETLY)
  67         MESSAGE(STATUS "Found ICU header files in ${ICU_INCLUDE_DIRS}")
  68         MESSAGE(STATUS "Found ICU libraries: ${ICU_LIBRARIES}")
  69     ENDIF ()
  70 ELSE ()
  71     IF (ICU_FIND_REQUIRED)
  72         MESSAGE(FATAL_ERROR "Could not find ICU")
  73     ELSE ()
  74         MESSAGE(STATUS "Optional package ICU was not found")
  75     ENDIF ()
  76 ENDIF ()
  77