[Lib2geom-devel] Check for _GLIBCXX_IOSTREAM

[Johan E. <jbc...@sw...>]

Hi all,
  Just now Inkscape hit on a build error on Mac (clang) because _GLIBCXX_IOSTREAM is not defined in libc++'s <iostream>.
point.h defines operator<< for Point, without #ifdef guard. But generic-rect.h _does_ define it with #ifdef guard, and so operator<<(iostream, Rect) is not available. Inkscape's (new) code assumed it is available and hence fails.

Should we separate all the iostream output functions into a separate file that people can then optionally include? I somewhat agree with not "tainting" the code to force including <iostream>...

(for now, I have removed the #ifdefs in Inkscape's source)

Cheers,
  Johan