The header gxhintn.h defines a 'int32' type, which conflicts with a (non-standard) type of the same name declared in intypes.h on AIX. Probably this should be changed to use the stdint int32_t type defined by stdint_.h.
Created attachment 937 [details] proposed fix moving to stdint types Here's a patch for the proposed solution.
There are similar problems in ttfsfnt.h.
The ttfsfnt.h problem has been moved to the bug 687728. This bug is now closed with the patch http://www.ghostscript.com/pipermail/gs-cvs/2004-October/004906.html