AC_FUNC_MMAP
AC_FUNC_VFORK
AC_CHECK_FUNCS([canonicalize_file_name realpath getrusage getuid \
- getgid poll pread64 sbrk setpgid setpgrp setsid \
+ getgid pipe poll pread64 sbrk setpgid setpgrp setsid \
sigaction sigprocmask sigsetmask socketpair syscall \
ttrace wborder setlocale iconvlist libiconvlist btowc])
AM_LANGINFO_CODESET