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      1 # FIND_PACKAGE_HANDLE_STANDARD_ARGS(NAME (DEFAULT_MSG|"Custom failure message") VAR1 ... )
      2 #    This macro is intended to be used in FindXXX.cmake modules files.
      3 #    It handles the REQUIRED and QUIET argument to FIND_PACKAGE() and
      4 #    it also sets the <UPPERCASED_NAME>_FOUND variable.
      5 #    The package is found if all variables listed are TRUE.
      6 #    Example:
      7 #
      8 #    FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibXml2 DEFAULT_MSG LIBXML2_LIBRARIES LIBXML2_INCLUDE_DIR)
      9 #
     10 #    LibXml2 is considered to be found, if both LIBXML2_LIBRARIES and 
     11 #    LIBXML2_INCLUDE_DIR are valid. Then also LIBXML2_FOUND is set to TRUE.
     12 #    If it is not found and REQUIRED was used, it fails with FATAL_ERROR, 
     13 #    independent whether QUIET was used or not.
     14 #    If it is found, the location is reported using the VAR1 argument, so 
     15 #    here a message "Found LibXml2: /usr/lib/libxml2.so" will be printed out.
     16 #    If the second argument is DEFAULT_MSG, the message in the failure case will 
     17 #    be "Could NOT find LibXml2", if you don't like this message you can specify
     18 #    your own custom failure message there.
     19 
     20 MACRO(FIND_PACKAGE_HANDLE_STANDARD_ARGS _NAME _FAIL_MSG _VAR1 )
     21 
     22   IF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
     23     IF (${_NAME}_FIND_REQUIRED)
     24       SET(_FAIL_MESSAGE "Could not find REQUIRED package ${_NAME}")
     25     ELSE (${_NAME}_FIND_REQUIRED)
     26       SET(_FAIL_MESSAGE "Could not find OPTIONAL package ${_NAME}")
     27     ENDIF (${_NAME}_FIND_REQUIRED)
     28   ELSE("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
     29     SET(_FAIL_MESSAGE "${_FAIL_MSG}")
     30   ENDIF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
     31 
     32   STRING(TOUPPER ${_NAME} _NAME_UPPER)
     33 
     34   SET(${_NAME_UPPER}_FOUND TRUE)
     35   IF(NOT ${_VAR1})
     36     SET(${_NAME_UPPER}_FOUND FALSE)
     37   ENDIF(NOT ${_VAR1})
     38 
     39   FOREACH(_CURRENT_VAR ${ARGN})
     40     IF(NOT ${_CURRENT_VAR})
     41       SET(${_NAME_UPPER}_FOUND FALSE)
     42     ENDIF(NOT ${_CURRENT_VAR})
     43   ENDFOREACH(_CURRENT_VAR)
     44 
     45   IF (${_NAME_UPPER}_FOUND)
     46     IF (NOT ${_NAME}_FIND_QUIETLY)
     47         MESSAGE(STATUS "Found ${_NAME}: ${${_VAR1}}")
     48     ENDIF (NOT ${_NAME}_FIND_QUIETLY)
     49   ELSE (${_NAME_UPPER}_FOUND)
     50     IF (${_NAME}_FIND_REQUIRED)
     51         MESSAGE(FATAL_ERROR "${_FAIL_MESSAGE}")
     52     ELSE (${_NAME}_FIND_REQUIRED)
     53       IF (NOT ${_NAME}_FIND_QUIETLY)
     54         MESSAGE(STATUS "${_FAIL_MESSAGE}")
     55       ENDIF (NOT ${_NAME}_FIND_QUIETLY)
     56     ENDIF (${_NAME}_FIND_REQUIRED)
     57   ENDIF (${_NAME_UPPER}_FOUND)
     58 ENDMACRO(FIND_PACKAGE_HANDLE_STANDARD_ARGS)
     59