[CMake] another problem with ENV vars and windows paths

[Alexander Neundorf]

Hi, 
 
recently cmake cvs has the new FILE() command: 
 
FILE(SYSTEM_PATH ENVIRONMENT_VARIABLE _variable) 
 
Now, there's the case that some tool outputs a list of directories (e.g. 
kde-config), which will also contain the backward slashes. For use with 
cmake the backslashes have to be replaced forward slashes. Basically this 
is what is done with FILE(SYSTEM_PATH ...) 
But this doesn't work for output from applications. 
 
We have currently the following code in FindKDE4.cmake: 
 
# then ask kde-config for the kde data dirs 
EXEC_PROGRAM(${KDE4_KDECONFIG_EXECUTABLE} ARGS --path data 
OUTPUT_VARIABLE _data_DIR ) 
 
IF(WIN32) 
   # cmake can't handle paths with '\' correct :-( 
   STRING(REGEX REPLACE "\\\\" "/" _data_DIR "${_data_DIR}") 
ELSE(WIN32) 
   # replace the ":" with ";" so that it becomes a valid cmake list 
   STRING(REGEX REPLACE ":" ";" _data_DIR "${_data_DIR}") 
ENDIF(WIN32) 
 
 
Maybe it would be a better idea to remove FILE(SYSTEM_PATH ...) again and 
instead add something like this: 
 
set(myPath $ENV{KDEDIRS}) 
TO_CMAKE(myKdeDirs ${myPath})  ? 
 
This would work for both cases, the env. var and if the content comes 
from somewhere else. 
What do you think ? 
 
Bye 
Alex 
 
 

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