[CMake] correct DEPENDS behaviour ?

[Brad King]

Brad King wrote:
> Alexander Neundorf wrote:
>> CMakeLists.txt: ADD_CUSTOM_COMMAND(OUTPUT 
>> ${CMAKE_CURRENT_BINARY_DIR}/generated.h COMMAND  sh ARGS -c "echo 
>> //>generated.h" DEPENDS blah.h #DEPENDS 
>> ${CMAKE_CURRENT_SOURCE_DIR}/blah.h ) 
> [snip]
>> if I put only "DEPENDS blah.h" in the custom command, this dependency 
>> is not generated in build.make. This is an in-source-build and no 
>> subdirs or  anything. Is this the expected behaviour ? 

I've just committed changes that should make this work.  Note earlier 
today I commited a large set of changes that centralize target name 
computation and remove a bunch of duplicate code.  It also fixes several 
bugs.  Please let me know if there are any problems with them.

-Brad