In an effort to speed up the build of a project that uses Qt (and moc) I tried
an alternate approach with the moc files. Normally I use the basic idea of
gathering the headers that need to be "moc'ed" and feed those to moc with this
type of CMake Code:
QT4_WRAP_CPP( FilterWidgets_Generated_MOC_SRCS ${QFilterWidget_HDRS}
${FilterWidget_GEN_HDRS})
The in the Add_Executable(...) call include the
${FilterWidgets_Generated_MOC_SRCS} variable to the list of sources. In my
project I have at least 30 auto-generated files which all get moc'ed. That
gives me an additional 60 compiled files. So I tried the idea of #include
"moc_[some_file.cxx]" in each of the auto-generated .cpp files for each Widget.
This would cut the number of files compiled in half. The issue is that since
they are being #include'ed in the .cpp files then they do NOT need to be
compiled themselves so I took the ${FilterWidgets_Generated_MOC_SRCS} out of
the list of sources in the add_executable() call. What happened is that CMake
did NOT run moc on those headers because there were now NOT included in the
build.
So for that version of the cmake code I have something like this:
QT4_WRAP_CPP( FilterWidgets_Generated_MOC_SRCS ${FilterWidget_GEN_HDRS})
QT4_WRAP_CPP( FilterWidgets_MOC_SRCS ${QFilterWidget_HDRS} )
Is there a way to forcibly run the moc step even if the resulting source files
are NOT directly included in the add_executable? Custom_Command? Add_Depends?
Thanks
___________________________________________________________
Mike Jackson Principal Software Engineer
BlueQuartz Software Dayton, Ohio
[email protected] www.bluequartz.net
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