[CMake] dlopen()able library making

Craig Bradney cbradney at zip.com.au
Wed Apr 5 08:54:57 EDT 2006 

On Wednesday 05 April 2006 13:36, William A. Hoffman wrote:
> At 02:35 AM 4/5/2006, Craig Bradney wrote:
> >SET(SCRIBUS_COLORWHEEL_PLUGIN "colorwheel")
> >IF(QT_WRAP_CPP)
> >  SCRIBUS_QT_WRAP_CPP(${SCRIBUS_COLORWHEEL_PLUGIN}
> >${COLORWHEEL_PLUGIN_MOC_CLASSES})
> >ENDIF(QT_WRAP_CPP)
> >
> >ADD_LIBRARY(${SCRIBUS_COLORWHEEL_PLUGIN} MODULE
> > ${COLORWHEEL_PLUGIN_SOURCES} ${COLORWHEEL_PLUGIN_MOC_SOURCES})
> >
> >
> >So theres not much different.. apart from the moc setup which all seems to
> >work fine (as it does in the main code). Perhaps the only surprise there
> > is the SCRIBUS_QT_WRAP which gives me class.moc instead of moc_class.cxx
> > files. This is the first plugin I've attempted to get working from all
> > you will see in the plugins directory (aside from some STATIC ones not in
> > this directory which work fine).
>
> What does the macro SCRIBUS_QT_WRAP_CPP do?  Maybe it is clobbering the
> value in COLORWHEEL_PLUGIN_SOURCES somehow.  If you do a make VERBOSE=1,
> does it compile all the files that it should?  Like colorwheel.cpp?  You
> could post the build.make from here CMakeFiles/colorwheel.dir/build.make.
>
SCRIBUS_QT_WRAP_CPP is based on the QT4_WRAP_CPP:

  MACRO(SCRIBUS_QT_WRAP_CPP outfiles )
    FOREACH(it ${ARGN})
      GET_FILENAME_COMPONENT(outfile ${it} NAME_WE)

      SET(infile ${CMAKE_CURRENT_SOURCE_DIR}/${it})
      SET(outfile ${CMAKE_CURRENT_BINARY_DIR}/${outfile}.moc)
      ADD_CUSTOM_COMMAND(OUTPUT ${outfile}
        COMMAND ${QT_MOC_EXECUTABLE}
        ARGS -o ${outfile} ${infile}
        MAIN_DEPENDENCY ${infile})
      SET(${outfiles} ${${outfiles}} ${outfile})
    ENDFOREACH(it)

  ENDMACRO(SCRIBUS_QT_WRAP_CPP)

Simply so we can use filename.moc to include them in the original .cpp files 
without changing any source code. All files are run through moc and built ok. 
Perhaps this is the problem.. it wouldn't surprise me given I just hacked up 
the original, especially if Qt4 works significantly differently to Qt3 WRT 
plugins (although, apart from the symbols not being dynamic like in this 
plugin, the main exe runs quite fine with all of its moc'd cpp files using 
the same method).

build.make is attached.

thanks
Craig
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