Gentoo's Bugzilla –
Attachment 355262 Details for
Bug 479954media-libs/tiff-4.0.3-r2 with media-libs/jpeg-9 - In file included from /usr/include/jpeglib.h:27:0, from tif_jpeg.c:88: /usr/include/jmorecfg.h:263:16: error: expected identifier before numeric constant