version checking for Oyranos

[Alexander Neundorf]

On Thursday 09 January 2014, David Faure wrote:
> kolor-manager.git doesn't check the version number of the oyranos library
> it's using.
> 
> So I tried this:
> 
> diff --git a/CMakeLists.txt b/CMakeLists.txt
> index a227fa8..8ce6372 100644
> --- a/CMakeLists.txt
> +++ b/CMakeLists.txt
> @@ -15,7 +15,7 @@ SET( ${PROJECT_NAME}_MICRO_VERSION 2)
>  SET( ${PROJECT_NAME}_VERSION
> ${${PROJECT_NAME}_MAJOR_VERSION}.${${PROJECT_NAME}_MINOR_VERSION}.${${PROJ
> ECT_NAME}_MICRO_VERSION} )
> 
>  FIND_PACKAGE(KDE4 REQUIRED )
> -FIND_PACKAGE(Oyranos REQUIRED)
> +FIND_PACKAGE(Oyranos 0.9.5 REQUIRED)
>  FIND_PACKAGE(Xcm REQUIRED)       # for KolorServer
> 
>  INCLUDE_DIRECTORIES(${KDE4_INCLUDES} ${OYRANOS_INCLUDE_DIRS}
> ${XCM_INCLUDE_DIRS})
> 
> and it gives:
> 
> CMake Error at CMakeLists.txt:18 (FIND_PACKAGE):
>   Could not find a configuration file for package "Oyranos" that is
>   compatible with requested version "0.9.5".
> 
>   The following configuration files were considered but not accepted:
> 
>     /usr/lib64/oyranos/cmake/OyranosConfig.cmake, version: unknown

the file you attached is 0.9.4, but 0.9.5 is required it seems.

Beside that, the Config file does a bunch of find_...() calls, which is not 
the recommended way, but it should be ok, since the paths are probably 
configured to point to the correct the install location, and NO_DEFAULT_PATH 
is used.
So I don't see an obvious reason why OYRANOS_FOUND should be false.

I'd add a bunch of debug output and just see what happens.
Btw. cmake 2.8.12 has a macro
include(CMakePrintHelpers)
cmake_print_variables(Var1 ... VarN)
which makes this easier.

Alex