I ran into a problem with this release on Solaris 10 with Sun C 5.13:
CC fts.o
"fts.c", line 1915: warning: type of struct member "__b" can not be derived fro\
m structure with flexible array member
"fts.c", line 1915: warning: type of struct member "__b" can not be derived fro\
m structure with flexible array member
This is due to the use of Gnulib alignof to calculate the alignment of a struct
with a flexible array member; the Gnulib implementation doesn't support this on
C99 (it violates a C99 constraint). I'll look into a workaround within fts.
I did manage a build on AIX with xlc; works OK.