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 ${ICU_INCLUDE_DIR})
  31
  32   set(ICU_VERSION 0)
  33   set(ICU_MAJOR_VERSION 0)
  34   set(ICU_MINOR_VERSION 0)
  35   if (EXISTS "${ICU_INCLUDE_DIR}/unicode/uvernum.h")
  36     FILE(READ "${ICU_INCLUDE_DIR}/unicode/uvernum.h" _ICU_VERSION_CONENTS)
  37   else()
  38     FILE(READ "${ICU_INCLUDE_DIR}/unicode/uversion.h" _ICU_VERSION_CONENTS)
  39   endif()
  40
  41   STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MAJOR_NUM ([0-9]+).*" "\\1" ICU_MAJOR_VERSION "${_ICU_VERSION_CONENTS}")
  42   STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MINOR_NUM ([0-9]+).*" "\\1" ICU_MINOR_VERSION "${_ICU_VERSION_CONENTS}")
  43
  44   set(ICU_VERSION "${ICU_MAJOR_VERSION}.${ICU_MINOR_VERSION}")
  45
  46   # Look for the ICU internationalization libraries
  47   find_library(
  48     ICU_I18N_LIBRARY
  49     NAMES icuin icui18n cygicuin cygicuin32
  50     DOC "Libraries to link against for ICU internationalization")
  51   mark_as_advanced(ICU_I18N_LIBRARY)
  52   if (ICU_I18N_LIBRARY)
  53     set(ICU_I18N_FOUND 1)
  54     set(ICU_I18N_LIBRARIES ${ICU_I18N_LIBRARY})
  55   else (ICU_I18N_LIBRARY)
  56     set(ICU_I18N_FOUND 0)
  57     set(ICU_I18N_LIBRARIES)
  58   endif (ICU_I18N_LIBRARY)
  59
  60   # Look for the ICU data libraries
  61   find_library(
  62       ICU_DATA_LIBRARY
  63     NAMES icudt icudata cygicudata cygicudata32
  64     DOC "Libraries to link against for ICU data")
  65   mark_as_advanced(ICU_DATA_LIBRARY)
  66   if (ICU_DATA_LIBRARY)
  67     set(ICU_DATA_FOUND 1)
  68     set(ICU_DATA_LIBRARIES ${ICU_DATA_LIBRARY})
  69   else (ICU_DATA_LIBRARY)
  70     set(ICU_DATA_FOUND 0)
  71     set(ICU_DATA_LIBRARIES)
  72   endif (ICU_DATA_LIBRARY)
  73 else(ICU_INCLUDE_DIR AND ICU_LIBRARY)
  74   set(ICU_FOUND 0)
  75   set(ICU_I18N_FOUND 0)
  76   set(ICU_LIBRARIES)
  77   set(ICU_I18N_LIBRARIES)
  78   set(ICU_INCLUDE_DIRS)
  79   set(ICU_VERSION)
  80   set(ICU_MAJOR_VERSION)
  81   set(ICU_MINOR_VERSION)
  82 endif(ICU_INCLUDE_DIR AND ICU_LIBRARY)
  83
  84 IF(ICU_FOUND)
  85   IF( NOT ICU_FIND_QUIETLY )
  86     MESSAGE( STATUS "Found ICU header files in ${ICU_INCLUDE_DIRS}")
  87     MESSAGE( STATUS "Found ICU libraries: ${ICU_LIBRARIES}")
  88   ENDIF( NOT ICU_FIND_QUIETLY )
  89 ELSE(ICU_FOUND)
  90   IF(ICU_FIND_REQUIRED)
  91     MESSAGE( FATAL_ERROR "Could not find ICU" )
  92   ELSE(ICU_FIND_REQUIRED)
  93     MESSAGE( STATUS "Optional package ICU was not found" )
  94   ENDIF(ICU_FIND_REQUIRED)
  95 ENDIF(ICU_FOUND)