[CMake] 3rd party cmake files

[Alexander Neundorf]

> -------- Original-Nachricht --------
> Datum: Mon, 05 Jun 2006 17:01:16 -0400
> Von: Brad King <brad.king at kitware.com>
> An: Jan Woetzel <jw at woetzelweb.de>
> Betreff: Re: [CMake] 3rd party cmake files
> 
> Jan Woetzel wrote:
> > Brad King wrote:
> > 
> >>  If it has found this file then why does it need a find script to find 
> >> QtDBUS since it has just found something from the package?
> > 
> > > Brad,
> > I do not agree if multiple packages/find scripts come into play because 
> > each client project has to take care of cmakes internal structure.
> > 
> > We use FIND_PACKAGE with <Package>Config.cmake for our *major* packages 
> > and are happy with some possibly "interactive" or "-D" <Package>_DIR 
> > settings.
> > 
> > However, our >70 additional  "simple" find scripts do not belong to a 
> > special package.
> > Just like the CMake/Modules scripts teh y look for some external 
> > libs+headers.
> > They are used by many projects and canbe thought of as "installed", 
> > belong to an independant cvs etc.
> > 
> > To use these additional find scripts
> > - without "complicated" -D setting on cmake call
> > - wrapping shell script etc...
> > we need something as ugly as this:
> > 
> > > # environment variable should contain our additional cmake find script
> > Modules
> > SET(CMAKE_MODULE_PATH $ENV{CMAKE_MODULE_PATH})
> > IF(NOT CMAKE_MODULE_PATH)
> >  MESSAGE(FATAL_ERROR "FATAL ERROR: Please set shell variable 
> > CMAKE_MODULE_PATH to our additional CMakeModules repository.")
> > ELSE(NOT CMAKE_MODULE_PATH)
> >  # a user modules path is set
> >  # check for at least one of our find scripts to be sure the path is no 
> > crap.
> >  FIND_FILE(BIAS_CMAKE_MODULE_PATH_OK FindBLAS.cmake ${CMAKE_MODULE_PATH}
> > DOC "testing CMAKE_MODULE_PATH")
> >  IF (NOT BIAS_CMAKE_MODULE_PATH_OK)
> >    MESSAGE(FATAL_ERROR "Your CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH} is 
> > invalid because FindBLAS.cmake not found. Please set shell variable 
> > CMAKE_MODULE_PATH to your (cvs) CMakeModules repository.")
> >  ENDIF (NOT BIAS_CMAKE_MODULE_PATH_OK)
> > ENDIF(NOT CMAKE_MODULE_PATH)
> > MARK_AS_ADVANCED(BIAS_CMAKE_MODULE_PATH_OK)
> 
> Exactly.  This is why I don't want the 3rd party files...users will have 
> to set something like this.
> 
> > Extending cmake would be much easier and more "open"
> > with an easy way to extend teh search path for FIND_PACKAGE.
> 
> What we really need is a way to make FIND_PACKAGE find the 
> QtDBUSConfig.cmake file and set QtDBUS_DIR more robustly.  Then you 
> would not need any FindQtDBUS.cmake file at all.  It looks like this was 
> overlooked in the recent FIND_* changes.

This means there are no standard locations where the FooConfig.cmake files are searched ?
That's basically the same problem, the file has to be installed in some place where it is found by cmake.
I think it doesn't really matter whether these are FindFoo.cmake or FooConfig.cmake or SomeMacro.cmake files.

Bye
Alex

 
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