[CMake] Xcode generator?

[Bill Hoffman]

Robert Dailey wrote:

> What do you mean "specified order"? Why does the order of static 
> libraries matter? And also what do you mean by "repeats"? 
Linkers on unix (including apple) require that the order of static 
libraries be specified in order of symbol usage.   Sometimes this 
requires a library to be repeated more than once on the link line, like 
-lA -lB -lA.  If A and B are Xcode static libraries, and you have 
executable C that uses them, there is no way in Xcode other than raw 
linker commands to get it to use -lA -lB -lA.  So, CMake uses -lA -lB 
-lA all the time.  The problem comes in because you can not put external 
depends on a C in Xcode.  So, we use a helper makefile to remove C if A 
or B changes.   It is really horrible, but at least Xcode provided a way 
to get around the problem using makefiles....

-Bill