MantisBT - CMake
However, in my tests exec_program() call sometimes delivers empty output, so FindQt4 module reports errors like these ones (FindQt4.cmake was modified to output intermediate variables):
[Debugging output starts here]
Running C:/Hudson/Common/ThirdParty/qt/win32/bin/qmake.exe with arg QT_VERSION
Got return code 0 and output 4.7.1
Converted output path to 4.7.1 and recorded to QTVERSION
Running C:/Hudson/Common/ThirdParty/qt/win32/bin/qmake.exe with arg QMAKE_MKSPECS
Got return code 0 and output C:/Hudson/Common/ThirdParty/qt\mkspecs
Converted output path to C:/Hudson/Common/ThirdParty/qt/mkspecs and recorded to qt_mkspecs_dirs
Running C:/Hudson/Common/ThirdParty/qt/win32/bin/qmake.exe with arg QT_INSTALL_LIBS
Got return code 0 and output
Converted output path to and recorded to QT_LIBRARY_DIR_TMP
[Debugging output ends here]
Warning: QT_QMAKE_EXECUTABLE reported QT_INSTALL_LIBS as
Warning: But QtCore couldn't be found. Qt must NOT be installed correctly, or it wasn't found for cross compiling.
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/FindQt4.cmake:642 (MESSAGE):
Could NOT find QtCore.
The script qmakeTest.cmake, when run as cmake -P qmakeTest.cmake reproduces this problem approximately ones per several hundreds iterations.
It should be noted that if first part of the script (which uses exec_program) is commented and second part (which uses execute_process) is used instead, things work fine (up to 10,000 iterations - the max I had the time to wait for ;-) ), so, considering exec_program is deprecated, the way to fix this seems to be just to replace exec_program with execute_process.
The primary testing environment was Windows 7 64 bit installed in VirtualBox 3.2.12, though I've got similar error, I believe, on native Windows 7 64 bit installation too.
qmakeTest.cmake (683) 2011-01-10 06:54https://public.kitware.com/Bug/file/3609/qmakeTest.cmake