Conditional dependency
lazarus / 9-Editor

----------------------------------------------------------------------
Ocye · 2013-08-14 10:00

I'm using OpenGl in a project that is compiled as well for Qt which
lacks on Gl binding hitherto. In this case I use to comment out those
passages by {$ifdef LCLQt} but additionally I have to remove the
dependency to LazOpenGlContext. Is there a convenient way to do it,
perhaps by one of the newly introduced features?
I'm using the most recent version from svn trunk.

----------------------------------------------------------------------
User137 · 2013-08-14 12:28

This is not something i have ever tried myself, but you could divide
the project into 2 project files for unique settings. Both projects
would then use same lfm and unit files, so changes to other would
immediately be seen in the other too.

----------------------------------------------------------------------
Ocye · 2013-08-14 12:50

Good idea but it sounds similar time-consuming as removing/adding the
dependency (which is not really demanding, so my issue is rather some
kind of luxury problem). I've seen options to compile with conditions;
something like this (sorry, I'm currently on a different PC)
Quoteif Darwin then
  //do something
end;(I use to comment out the -XR MacOSX10.5.sdk stuff)

----------------------------------------------------------------------
hinst · 2013-09-20 16:01

I honestly absolutely don't get what you are doing and what you are
trying to achieve
If you have a package which you don't actually use in the project, it
won't be compiled into the project, so if you have source like this
  {$IfNDef LCLQt}
    UnitFromLazOpenGLContext
  {$EndIf}
Then UnitFromLazOpenGLContext package won't be compiled unless LCLQt
is undefined. You can add as many packages to project dependencies as
you want; this does not mean that they will be necessarily used and
compiled. So... you don't have to remove it. why would you remove it

----------------------------------------------------------------------
Ocye · 2013-09-20 16:20

And how do you deal with dependencies? The list of needed packages
includes lazopenglcontext, or not in case of Qt.

----------------------------------------------------------------------
hinst · 2013-09-20 18:52

Quote from: Ocye on September 20, 2013, 06:20:20 pmAnd how do you deal
with dependencies? The list of needed packages includes
lazopenglcontext, or not in case of Qt.
have them both. Like I said, even if some unused package is in the
project required packages list, it is not something that bad