[CMake] Re: Help getting -l and -L arguments from apr-config

[Matthew Woehlke]

Alan W. Irwin wrote:
> On 2007-05-02 17:49-0500 Matthew Woehlke wrote:
>> I am trying to fix kdesdk's broken attempt to link to subversion (it 
>> croaks when apr is not in a standard include path). I *do* have 
>> apr-config accessible so I can use that to get the right paths, but 
>> I'm having some trouble parsing --link-ld. Specifically, I am trying 
>> to iterate over each option and set LIBRARIES or LIB_PATHS as 
>> appropriate. Unfortunately this means I have to do something to split 
>> the single string into arguments, and I would /prefer/ for it to do 
>> proper shell splitting just in case an arg has a space in it.
>>
>> Is there a "right" way to do this? Or is there a better way to get 
>> LIBRARIES and LIB_PATHS from apr-config? (Note: while apr-config is 
>> found, pkg-config apr is not, so I can't use pkg-config :-(.)
> 
> I assume that apr-config generates command-line results for the Apache
> Runtime Library similar to what pkg-config does in general.  If that
> assumption is correct, then to parse the apr-config output you should 
> follow
> what is done in FindPkgConfig.cmake (a replacement for 
> UsePkgConfig.cmake in
> CMake cvs, but not released yet).  I don't know the implementation details
> in FindPkgConfig.cmake, but I do know the pkg_check_modules macro in that
> module file delivers nicely parsed (and complete) pkg-config results.

I don't have FindPkgConfig.cmake handy, but UsePkgConfig.cmake uses 
'pkgconfig --variable' which is not supported by apr-config. So I think 
I still have the same problem, how to take a string that might look like 
'-lfoo -lbar -L"foo bar/thelib"' and split it into '-lfoo', '-lbar' and 
'-L"foo bar/thelib". From there I can use STRING to strip the flag and 
SET/LIST to build the needed variables.

-- 
Matthew
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