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
20MACRO(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)
58ENDMACRO(FIND_PACKAGE_HANDLE_STANDARD_ARGS)
59