AC_DEFUN([CF_NETLIBS],[
cf_test_netlibs=no
AC_MSG_CHECKING(for network libraries)
AC_CACHE_VAL(cf_cv_netlibs,[
AC_MSG_RESULT(working...)
cf_cv_netlibs=""
cf_test_netlibs=yes
AC_CHECK_FUNCS(gethostname,,[
CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
if test "$ac_cv_func_lsocket" != no ; then
AC_CHECK_FUNCS(socket,,[
CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
fi
AC_CHECK_FUNCS(gethostbyname,,[
CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
AC_CHECK_FUNCS(strcasecmp,,[
CF_RECHECK_FUNC(strcasecmp,resolv,cf_cv_netlibs)])
])
LIBS="$LIBS $cf_cv_netlibs"
test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
])AC_DEFUN([CF_RECHECK_FUNC],[
AC_CHECK_LIB($2,$1,[
CF_UPPER(cf_tr_func,$1)
AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func,1,[Define if you have function $1])
ac_cv_func_$1=yes
$3="-l$2 [$]$3"],[
ac_cv_func_$1=unknown
unset ac_cv_func_$1 2>/dev/null
$4],
[[$]$3])
])AC_DEFUN([CF_UPPER],
[
changequote(,)$1=`echo $2 | tr '[a-z]' '[A-Z]'`
changequote([,])])
AC_DEFUN(AC_STRUCT_ST_MTIM_NSEC,
[AC_CACHE_CHECK([for nanoseconds field of struct stat.st_mtim],
ac_cv_struct_st_mtim_nsec,
[ac_save_CPPFLAGS="$CPPFLAGS"
ac_cv_struct_st_mtim_nsec=no
for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do
CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
AC_TRY_COMPILE([ [ac_cv_struct_st_mtim_nsec=$ac_val; break])
done
CPPFLAGS="$ac_save_CPPFLAGS"])
if test $ac_cv_struct_st_mtim_nsec != no; then
AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec, [Define if 'struct stat' contains a nanoseconds field])
fi
]
)
AC_DEFUN([make_FUNC_SETVBUF_REVERSED],
[AC_REQUIRE([AC_C_PROTOTYPES])AC_CACHE_CHECK(whether setvbuf arguments are reversed,
ac_cv_func_setvbuf_reversed,
[ac_cv_func_setvbuf_reversed=no
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[ int (setvbuf) (FILE *, int, char *, size_t);
[[char buf; return setvbuf (stdout, _IOLBF, &buf, 1);]])],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[ int (setvbuf) (FILE *, int, char *, size_t);
[[char buf; return setvbuf (stdout, &buf, _IOLBF, 1);]])],
[ AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[ [[/* This call has the arguments reversed.
A reversed system may check and see that the address of buf
is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
char buf;
if (setvbuf (stdout, _IOLBF, &buf, 1) != 0)
exit (1);
putchar ('\r');
exit (0); /* Non-reversed systems SEGV here. */]])],
ac_cv_func_setvbuf_reversed=yes,
rm -f core core.* *.core,
[[: ac_cv_func_setvbuf_reversed=yes)])])
if test $ac_cv_func_setvbuf_reversed = yes; then
AC_DEFINE(SETVBUF_REVERSED, 1,
[Define to 1 if the `setvbuf' function takes the buffering type as
its second argument and the buffer pointer as the third, as on
System V before release 3.])
fi
])