> /usr/include/sys/socket.h:47: syntax error before `sa_family_t' > [etc.]
The problem is the -D_POSIX_SOURCE which Greg Stein added last night. I was thinking of sending mail about it at the time, but decided he had probably done all the necessary footwork; I guess he missed something. If you define _POSIX_SOURCE, you cannot portably include system headers which are not specified by POSIX (including them indirectly through apr header files doesn't change anything). A well-behaved system will work anyway, but many systems will fail confusingly like you reported; <sys/types.h> doesn't define something like u_char which is used in the non-POSIX header file. Remove the -D_POSIX_SOURCE and things should build again, or at least shouldn't run into this problem.
