Trying to install GHC 6.6 on a Solaris 2.9 box (do I have the last 2.9 box in captivity? I've asked for 2.10, really and truly I have) I ran into two problems. (1) Somewhere it was assumed that only FreeBSD didn't have stdint.h. Solaris 2.9 doesn't have stdint.h. That was an easy patch. (2) In file included from Readline.hsc:16: include/HsReadline.h:5:31: readline/readline.h: No such file or dire.. include/HsReadline.h:6:30: readline/history.h: No such file or direc.. leading to a cascade of errors like Readline.hsc:570: error: `ISFUNC' undeclared Now I _have_ /usr/local/include/readline/*.h; if configure figured out that I have this library, why didn't it tell the C compiler where to look for the headers? The missing (undeclared) identifiers don't seem to be declared in those headers anyway. What to do?