[CMake] CMAKE_CONFIGURATION_TYPES and CMAKE_BUILD_TYPE_INIT ...

[Axel Roebel]

On Wednesday 05 April 2006 14:19, Eric BOIX wrote:
> 	Dear Brad King,
>
> Quoting Brad King <brad.king at kitware.com>:
> > To get options in the GUI they need to be cache settings.  Use the CACHE
> > form of the SET command.
> >
> > IF(NOT CMAKE_BUILD_TYPE)
> >   SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
> >       "Build Configuration")
> > ENDIF(NOT CMAKE_BUILD_TYPE)
>
> I had to add the FORCE flag in order to see the result appear in the GUIs.
> I hope this is ok ?

I had in fact the same problem as you. I would like to have a default 
CMAKE_INSTALL_PREFIX
different of /usr/local.

so the NOT test above will not work because CMAKE_INSTALL_PREFIX is never 
empty. Therefore, I test for the existance of CMakeCache.txt and FORCE the 
new default value if this file does not exist.

The unfortunate side effect is that I cannot override the default value by 
means of command line arguments.

Would there be a better way to change default values?
Note, that I don't want -C to be used because I want the proper default values 
to be used in the make rebuild_cache target!

I wonder whether it would not be much easier of cmake would take into account
a default values file like ${CMAKE_SOURCE_DIR}/CMakeDefaults.cmake
which would be used (if it exists) to set default values much like the -C 
command line option.

Kind regards,

> May I abuse and ask again about some hints on the *_INIT cmake variables
> (e.g. CMAKE_CXX_FLAGS_DEBUG_INIT ) and their proper usage ?
>
> 	Respectfuly yours,
> 	Eric Boix.
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-- 
Axel Roebel    
IRCAM Analysis/Synthesis Team
Email: Axel.Roebel at ircam.fr | Phone: ++33-1-4478 4845 | Fax: ++33-1-4478 1540