Hi Alan, Thanks, I wasn't aware of the shift towards the use of FUNCTIONs. Because of the developers I need to support, I've been mosting working with CMake 2.6. I didn't realize that this was one of the things 2.8 brought to the table.
- Christian > -----Original Message----- > From: Alan W. Irwin [mailto:ir...@beluga.phys.uvic.ca] > Sent: Sunday, June 27, 2010 16:49 > To: Convey, Christian J CIV NUWC NWPT > Cc: alokgo...@hotmail.com; cmake@cmake.org > Subject: Re: [CMake] An observation about CTest > > Your remarks focus on old-fashioned macros so it is possible > you are not aware of functions? As far as I know, most or all > macros can be replaced by functions which do have the nice > property of not polluting the global namespace. So newly > developed build systems should use functions wherever > possible, and certainly for old CMake-based build systems I > am associated with I am trying to move to functions as time permits. > > Here are some rough counts of functions and macros actually > contained in 2.8.x: > > ir...@raven> grep -i function cmake-2.8/Modules/*.cmake |grep > -v '#' |wc -l > 263 > ir...@raven> grep -i macro cmake-2.8/Modules/*.cmake |grep -v > '#' |wc -l > 337 > > Those numbers should be divided by roughly a factor of two > (because of ENDFUNCTION and ENDMACRO) to get approximate > counts of functions and macros. > > Clearly, the replacement of macros by functions is well on > its way for 2.8.x, but the process is still far from > completed. Once it is complete, however, the global > namespace will be much less polluted. > > Another namespace remark is that subdirectory variables do > not pollute the global namespace of their parent directories. > > So the global namespace pollution issue is not as bad as you > have outlined and because of functions is steadily improving. > > Alan
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