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4009fa8e22
As written, the FindPyQt5.cmake and FindPyQt5.py scripts will succeed even if PyQt5 is not installed. In FindPyQt5.cmake, we have PYQT5_FIND_REQUIRED rather than PyQt5_FIND_REQUIRED, so the package is always treated as though it is optional. In FindPyQt5.py, the script will succeed with a default location for the sip directory, even if the PyQt5 directory is not located. For some systems, if enough other dependencies are installed, the build can get about halfway complete without the main PyQt5 dependency, and then fail with a message like: sip: Unable to find file "QtXml/QtXmlmod.sip" I hit this building on Ubuntu, and there have been a few similar bug reports in the past.
60 lines
2.5 KiB
CMake
60 lines
2.5 KiB
CMake
# Find PyQt5
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# ~~~~~~~~~~
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# Copyright (c) 2007-2008, Simon Edwards <simon@simonzone.com>
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# Redistribution and use is allowed according to the terms of the BSD license.
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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
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#
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# PyQt5 website: http://www.riverbankcomputing.co.uk/pyqt/index.php
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#
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# Find the installed version of PyQt5. FindPyQt5 should only be called after
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# Python has been found.
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#
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# This file defines the following variables:
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#
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# PYQT5_VERSION - The version of PyQt5 found expressed as a 6 digit hex number
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# suitable for comparison as a string
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#
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# PYQT5_VERSION_STR - The version of PyQt5 as a human readable string.
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#
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# PYQT5_VERSION_TAG - The PyQt version tag using by PyQt's sip files.
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#
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# PYQT5_SIP_DIR - The directory holding the PyQt5 .sip files.
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#
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# PYQT5_SIP_FLAGS - The SIP flags used to build PyQt.
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IF(EXISTS PYQT5_VERSION)
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# Already in cache, be silent
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SET(PYQT5_FOUND TRUE)
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ELSE(EXISTS PYQT5_VERSION)
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FIND_FILE(_find_pyqt5_py FindPyQt5.py PATHS ${CMAKE_MODULE_PATH} NO_CMAKE_FIND_ROOT_PATH)
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EXECUTE_PROCESS(COMMAND ${PYTHON_EXECUTABLE} ${_find_pyqt5_py} OUTPUT_VARIABLE pyqt_config)
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IF(pyqt_config)
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STRING(REGEX REPLACE "^pyqt_version:([^\n]+).*$" "\\1" PYQT5_VERSION ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_version_str:([^\n]+).*$" "\\1" PYQT5_VERSION_STR ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_version_tag:([^\n]+).*$" "\\1" PYQT5_VERSION_TAG ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_version_num:([^\n]+).*$" "\\1" PYQT5_VERSION_NUM ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_mod_dir:([^\n]+).*$" "\\1" PYQT5_MOD_DIR ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_sip_dir:([^\n]+).*$" "\\1" PYQT5_SIP_DIR ${pyqt_config})
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IF(EXISTS ${PYQT5_SIP_DIR}/Qt5)
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SET(PYQT5_SIP_DIR ${PYQT5_SIP_DIR}/Qt5)
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ENDIF(EXISTS ${PYQT5_SIP_DIR}/Qt5)
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STRING(REGEX REPLACE ".*\npyqt_sip_flags:([^\n]+).*$" "\\1" PYQT5_SIP_FLAGS ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_bin_dir:([^\n]+).*$" "\\1" PYQT5_BIN_DIR ${pyqt_config})
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STRING(REGEX REPLACE ".*\npyqt_sip_module:([^\n]+).*$" "\\1" PYQT5_SIP_IMPORT ${pyqt_config})
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SET(PYQT5_FOUND TRUE)
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ENDIF(pyqt_config)
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IF(PYQT5_FOUND)
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IF(NOT PyQt5_FIND_QUIETLY)
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MESSAGE(STATUS "Found PyQt5 version: ${PYQT5_VERSION_STR}")
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ENDIF(NOT PYQT5_FIND_QUIETLY)
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ELSE(PYQT5_FOUND)
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IF(PyQt5_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Could not find PyQt5")
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ENDIF(PyQt5_FIND_REQUIRED)
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ENDIF(PYQT5_FOUND)
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ENDIF(EXISTS PYQT5_VERSION)
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