[Scons-users] Scons-Qt5 questions / How can I generate Qt5 files into custom directories? - How can I debug and influence file dependencies?

[William Blevins]

Marco,

1. Your example shows a custom builder, but the default Moc only has an
input source correct? I'm not an expert with Moc, but generally with SCons
you need to set SCons environment variables related to the builder if the
underlying tool sets a feature via commandline parameter (which I assume
Moc does). Try QT_MOCCXXPREFIX as specified here:
http://scons.org/doc/production/HTML/scons-user.html#cv-QTDIR

2. SCons scanners look for files based on standard paths. CXX headers will
only be found if they exist in the include path for example.

Let me know if that helps,
William


On Mon, Jul 4, 2016 at 3:40 PM, Marco Buczilowski <
marco.buczilowski at autodesk.com> wrote:

> Hello everyone,
>
>
>
> three weeks ago I started evaluating Scons as build system for a medium
> sized project. It all went well and I like the flexibility, which is
> important, because I have to use an existing project structure.
> For the next step I have to create build scripts for the user interface
> libraries, which are based upon QT version 5. This part seems to be tricky
> and I'd appreciate to get some help and advice from you.
>
>
>
> The project structure looks like this:
>
>
>
> *Static interface library*
>
> + (Folder)header files
>
> + (Folder)private header files
>
> + (Folder)Forms (qt ui files)
>
> + (Folder)GeneratedFiles (moc files, ui header, processed resource files)
>
> + (Folder)Source
>
> (File) qt translation file (.ts)
>
> (File) qt resource file (.qrc)
>
>
>
> What I want scons to do is:
>
> * Search for ui files in Forms and generate headers into the
> GeneratedFiles folder
>
> * Search for translation files in project root and generate binary
> translation file
>
> * Search for qrc files in root and generate cpp files in GeneratedFiles
> folder
>
> * Use the automoc feature to moc Qt classes
>
> * compile everything
>
>
>
> I already got scons to complete single tasks, but for several reasons I
> don't get it all together.
>
>
>
> First important question: Is it possible and solid to generate Qt files
> into a custom directory. I tried things like this:
>
>
>
> > for qtUiSourceFile in qtUiSourceFiles:
>
> >     destination_file =
> File(os.path.join(os.path.join('.','GeneratedFiles'), 'ui_' +
> qtUiSourceFile.name.replace('.ui', '.h')))
>
> >     modCEnv.ExplicitUic5(destination_file, qtUiSourceFile)
>
>
>
> And how would I specify the destination for moc, resource and translation
> files?
>
>
>
> The automoc feature seems to work fine, with the exception, that the moc
> files are generated into the source directory at the moment. The same
> applies to the resource files.
>
>
>
> The main problem I'm struggeling with is, that SCons doesn't seem to find
> a reference from the Qt widget‘s header file, to the generated ui header.
> Maybe it has something to do with the fact, that the ui and the generated
> header files are in different directories.
>
> The reference would be:
>
>   moc_FcQErrorLog.cc has to be compiled. it includes
>
>   FcQErrorLog.h which includes the generated
>
>   ui_fby_problem_widget.h
>
>
>
> SCons seems to know about the ui files, because they are part of the
> dependency tree.
>
>
>
>     | | | +-src_unique\L50\ Qt-Utilities\fby_qt_js.dev\Form
>
>     | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\Form\fby_problem_widget.ui
>
>     | | | +-src_unique\L50\ Qt-Utilities\fby_qt_js.dev\GeneratedFiles
>
>     | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\GeneratedFiles\ui_fby_problem_widget.h
>
>     | | | |   +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\Form\fby_problem_widget.ui
>
>     | | | |   +-D:\dev\qt\qt_self_5.5.1_x64_msvc2013\qtbase\bin\uic.exe
>
>
>
> But there's no connection between moc_FcQErrorLog.o and the generated
> header. It all ends with FcQErrorLog.h
>
>
>
>     | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\fby_qt_js\moc_FcQErrorLog.obj
>
>     | | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\fby_qt_js\moc_FcQErrorLog.cc
>
>     | | | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\fby_qt_js\FcQErrorLog.h
>
>     | | | | | | +-D:\dev\qt\qt_self_5.5.1_x64_msvc2013\qtbase\bin\moc.exe
>
>     | | | | | +-src_unique\L50\
> Qt-Utilities\fby_qt_js.dev\fby_qt_js\FcQErrorLog.h
>
>
>
> Thanks,
>
> Marco Buczilowski
>
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