dnl We want to test for the following in libc before checking for their
dnl respective libraries, because some systems (like Irix) have both, and the
dnl non-libc versions may be broken.
-AC_CHECK_FUNCS(crypt gethostbyname connect flock)
+AC_CHECK_FUNCS(crypt gethostbyname connect flock getpwnam_r getpwuid_r)
dnl disable backtrace if we don't want it.