Hello, I'm working on project to provide a Qt5 conda package. Briefly, conda is an open source package manager developed by Continuum Analytics (with whom I am not affiliated) that deals with conflicting software stacks by creating isolated environments (especially good for scientific software). In practice, one writes a recipe like https://github.com/ddale/qt5-conda-recipe for conda to build a platform-specific binary, and then anyone can use conda to install that binary into some arbitrary environment for example ~/envs/qt5. So its a little different from the standard linux package manager, where the installation point is known at build time, but very similar to what Qt package installers have to do on Windows. Conda takes care of things like patchelf, and my recipe takes care of creating the appropriate qt.conf files.
If I configure qt5 with the assumption that I don't have to worry about conflicts with qt4 in the same environment, which I did in https://github.com/ddale/qt5-conda-recipe/tree/8f88a7657f5a5c84383d0238605c30a3d81494b6 , then I can successfully build qt5 in one environment, install it in another, and I can also build and install a PyQt5 conda package against that library, and run the PyQt5 examples. So far, so good, but the next step was to configure the qt5 package for installation alongside qt4, based on the strategy at http://www.linuxfromscratch.org/blfs/view/7.4/x/qt5.html . The conda recipe at https://github.com/ddale/qt5-conda-recipe/tree/32fe321c58bdbbed3a50e227fd519c46a96314b9 does this. I am testing in an environment without qt4 installed. It is partially working, in that I can build the binary, install it in ~/envs/qt5, and run designer. The recipe installs qt.conf files such that qmake -query yields expected results: $ ~/envs/qt5/lib/qt5/bin/qmake -query QT_SYSROOT: QT_INSTALL_PREFIX:/home/darren/envs/qt5 QT_INSTALL_ARCHDATA:/home/darren/envs/qt5/lib/qt5/mkspecs QT_INSTALL_DATA:/home/darren/envs/qt5/share/qt5 QT_INSTALL_DOCS:/home/darren/envs/qt5/doc QT_INSTALL_HEADERS:/home/darren/envs/qt5/include/qt5 QT_INSTALL_LIBS:/home/darren/envs/qt5/lib QT_INSTALL_LIBEXECS:/home/darren/envs/qt5/libexec QT_INSTALL_BINS:/home/darren/envs/qt5/lib/qt5/bin QT_INSTALL_TESTS:/home/darren/envs/qt5/tests QT_INSTALL_PLUGINS:/home/darren/envs/qt5/lib/qt5/plugins QT_INSTALL_IMPORTS:/home/darren/envs/qt5/lib/qt5/imports QT_INSTALL_QML:/home/darren/envs/qt5/qml QT_INSTALL_TRANSLATIONS:/home/darren/envs/qt5/translations QT_INSTALL_CONFIGURATION: QT_INSTALL_EXAMPLES:/home/darren/envs/qt5/examples QT_INSTALL_DEMOS:/home/darren/envs/qt5/examples QT_HOST_PREFIX:/home/darren/envs/qt5 QT_HOST_DATA:/home/darren/envs/qt5 QT_HOST_BINS:/home/darren/envs/qt5/bin QT_HOST_LIBS:/home/darren/envs/qt5/lib QMAKE_SPEC:linux-g++ QMAKE_XSPEC:linux-g++ QMAKE_VERSION:3.0 QT_VERSION:5.3.1 However, when I try to build PyQt5, qmake reports errors like "Could not find qmake configuration file linux-g++". If I define QMAKESPEC (which I don't think that should be necessary, since my qt.conf file defines ArchData), I get errors like "Cannot find feature spec_pre.prf", or "Project ERROR: Unknown module(s) in QT: core". I spent a good part of the weekend looking for information on the web. I'm not certain I understand the problem, but am certain there must be a solution, since the Qt installer for windows can install to an arbitrary location. I found a short discussion at http://stackoverflow.com/a/17640221 , talking about how qmake, Qt5Core, and a few other files need to be patched, but did not understand exactly what needs to be patched, and how. (Please excuse me for not understanding the c++ code that was posted.) Is there any documentation on how to do this? Thanks, Darren
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