X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=cmake%2Fmodules%2FFindPackageHandleStandardArgs.cmake;fp=cmake%2Fmodules%2FFindPackageHandleStandardArgs.cmake;h=fe4345c7e8935df533201608369b2481309021f1;hp=0000000000000000000000000000000000000000;hb=f16f4c54f3d4d96a71cedbb2d5637f5d3bafe3d2;hpb=8027c233b863690b24dd0bb56bf1f933290385c2 diff --git a/cmake/modules/FindPackageHandleStandardArgs.cmake b/cmake/modules/FindPackageHandleStandardArgs.cmake new file mode 100644 index 00000000..fe4345c7 --- /dev/null +++ b/cmake/modules/FindPackageHandleStandardArgs.cmake @@ -0,0 +1,151 @@ +# FIND_PACKAGE_HANDLE_STANDARD_ARGS(NAME (DEFAULT_MSG|"Custom failure message") VAR1 ... ) +# This macro is intended to be used in FindXXX.cmake modules files. +# It handles the REQUIRED and QUIET argument to FIND_PACKAGE() and +# it also sets the _FOUND variable. +# The package is considered found if all variables listed are TRUE. +# The version-argument of FIND_PACKAGE() is also handled. +# For checking whether the version is ok, this macro compares the +# variable _VERSION with the specified version. +# Example: +# +# FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibXml2 DEFAULT_MSG LIBXML2_LIBRARIES LIBXML2_INCLUDE_DIR) +# +# LibXml2 is considered to be found, if both LIBXML2_LIBRARIES and +# LIBXML2_INCLUDE_DIR are valid. Then also LIBXML2_FOUND is set to TRUE. +# If it is not found and REQUIRED was used, it fails with FATAL_ERROR, +# independent whether QUIET was used or not. +# If it is found, the location is reported using the VAR1 argument, so +# here a message "Found LibXml2: /usr/lib/libxml2.so" will be printed out. +# If the second argument is DEFAULT_MSG, the message in the failure case will +# be "Could NOT find LibXml2", if you don't like this message you can specify +# your own custom failure message there. + +#============================================================================= +# Copyright 2007-2009 Kitware, Inc. +# +# Distributed under the OSI-approved BSD License (the "License"); +# see accompanying file Copyright.txt for details. +# +# This software is distributed WITHOUT ANY WARRANTY; without even the +# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the License for more information. +#============================================================================= +# (To distributed this file outside of CMake, substitute the full +# License text for the above reference.) + +INCLUDE(FindPackageMessage) +FUNCTION(FIND_PACKAGE_HANDLE_STANDARD_ARGS _NAME _FAIL_MSG _VAR1 ) + + IF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG") + SET(_FAIL_MESSAGE "Could NOT find ${_NAME}") + ELSE("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG") + SET(_FAIL_MESSAGE "${_FAIL_MSG}") + ENDIF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG") + + STRING(TOUPPER ${_NAME} _NAME_UPPER) + + # collect all variables which were not found, so they can be printed, so the + # user knows better what went wrong (#6375) + SET(MISSING_VARS "") + SET(DETAILS "") + SET(${_NAME_UPPER}_FOUND TRUE) + IF(NOT ${_VAR1}) + SET(${_NAME_UPPER}_FOUND FALSE) + SET(MISSING_VARS " ${_VAR1}") + ELSE(NOT ${_VAR1}) + SET(DETAILS "${DETAILS}[${${_VAR1}}]") + ENDIF(NOT ${_VAR1}) + + # check if all passed variables are valid + FOREACH(_CURRENT_VAR ${ARGN}) + IF(NOT ${_CURRENT_VAR}) + SET(${_NAME_UPPER}_FOUND FALSE) + SET(MISSING_VARS "${MISSING_VARS} ${_CURRENT_VAR}") + ELSE(NOT ${_CURRENT_VAR}) + SET(DETAILS "${DETAILS}[${${_CURRENT_VAR}}]") + ENDIF(NOT ${_CURRENT_VAR}) + ENDFOREACH(_CURRENT_VAR) + + # version handling: + SET(VERSION_MSG "") + SET(VERSION_OK TRUE) + IF (${_NAME}_FIND_VERSION) + + # if the package was found, check for the version using _FIND_VERSION + IF (${_NAME_UPPER}_FOUND) + IF(${_NAME_UPPER}_VERSION) + SET(VERSION ${${_NAME_UPPER}_VERSION}) + ELSEIF(${_NAME}_VERSION) + SET(VERSION ${${_NAME}_VERSION}) + ENDIF(${_NAME_UPPER}_VERSION) + + IF(VERSION) #hmm what do we do if the module in question doesn't set FOO_VERSION but something else ?... Ignore it for now + + IF(${_NAME}_FIND_VERSION_EXACT) # exact version required + IF (NOT "${${_NAME}_FIND_VERSION}" VERSION_EQUAL "${VERSION}") + SET(VERSION_MSG " Found version \"${VERSION}\", but required is exact version \"${${_NAME}_FIND_VERSION}\"") + SET(VERSION_OK FALSE) + ELSE (NOT "${${_NAME}_FIND_VERSION}" VERSION_EQUAL "${VERSION}") + SET(VERSION_MSG " (found exact version \"${VERSION}\")") + ENDIF (NOT "${${_NAME}_FIND_VERSION}" VERSION_EQUAL "${VERSION}") + + ELSE(${_NAME}_FIND_VERSION_EXACT) # minimum version specified: + IF ("${${_NAME}_FIND_VERSION}" VERSION_GREATER "${VERSION}") + SET(VERSION_MSG " Found version \"${VERSION}\", but required is at least \"${${_NAME}_FIND_VERSION}\"") + SET(VERSION_OK FALSE) + ELSE ("${${_NAME}_FIND_VERSION}" VERSION_GREATER "${VERSION}") + SET(VERSION_MSG " (found version \"${VERSION}\", required is \"${${_NAME}_FIND_VERSION}\")") + ENDIF ("${${_NAME}_FIND_VERSION}" VERSION_GREATER "${VERSION}") + ENDIF(${_NAME}_FIND_VERSION_EXACT) + + ELSE(VERSION) + SET(VERSION_MSG " (WARNING: Required version is \"${${_NAME}_FIND_VERSION}\", but version of ${_NAME} is unknown)") + ENDIF(VERSION) + + # if the package was not found, but some a version was given, add that to the output: + ELSE (${_NAME_UPPER}_FOUND) + IF(${_NAME}_FIND_VERSION_EXACT) + SET(VERSION_MSG " (Required is exact version \"${${_NAME}_FIND_VERSION}\")") + ELSE(${_NAME}_FIND_VERSION_EXACT) + SET(VERSION_MSG " (Required is at least version \"${${_NAME}_FIND_VERSION}\")") + ENDIF(${_NAME}_FIND_VERSION_EXACT) + ENDIF (${_NAME_UPPER}_FOUND) + ENDIF (${_NAME}_FIND_VERSION) + + IF(VERSION_OK) + SET(DETAILS "${DETAILS}[v${${VERSION}}]") + ELSE(VERSION_OK) + SET(${_NAME_UPPER}_FOUND FALSE) + ENDIF(VERSION_OK) + + + # print the result: + IF (${_NAME_UPPER}_FOUND) + FIND_PACKAGE_MESSAGE(${_NAME} "Found ${_NAME}: ${${_VAR1}} ${VERSION_MSG}" "${DETAILS}") + ELSE (${_NAME_UPPER}_FOUND) + IF(NOT VERSION_OK) + + IF (${_NAME}_FIND_REQUIRED) + MESSAGE(FATAL_ERROR "${_FAIL_MESSAGE}: ${VERSION_MSG} (found ${${_VAR1}})") + ELSE (${_NAME}_FIND_REQUIRED) + IF (NOT ${_NAME}_FIND_QUIETLY) + MESSAGE(STATUS "${_FAIL_MESSAGE}: ${VERSION_MSG} (found ${${_VAR1}})") + ENDIF (NOT ${_NAME}_FIND_QUIETLY) + ENDIF (${_NAME}_FIND_REQUIRED) + + ELSE(NOT VERSION_OK) + + IF (${_NAME}_FIND_REQUIRED) + MESSAGE(FATAL_ERROR "${_FAIL_MESSAGE} (missing: ${MISSING_VARS}) ${VERSION_MSG}") + ELSE (${_NAME}_FIND_REQUIRED) + IF (NOT ${_NAME}_FIND_QUIETLY) + MESSAGE(STATUS "${_FAIL_MESSAGE} (missing: ${MISSING_VARS}) ${VERSION_MSG}") + ENDIF (NOT ${_NAME}_FIND_QUIETLY) + ENDIF (${_NAME}_FIND_REQUIRED) + ENDIF(NOT VERSION_OK) + + ENDIF (${_NAME_UPPER}_FOUND) + + SET(${_NAME_UPPER}_FOUND ${${_NAME_UPPER}_FOUND} PARENT_SCOPE) + +ENDFUNCTION(FIND_PACKAGE_HANDLE_STANDARD_ARGS)