4 dnl Determine whether chown accepts arguments of -1 for uid and gid.
5 dnl If it doesn't, arrange to use the replacement function.
7 dnl If you use this macro in a package, you should
8 dnl add the following two lines to acconfig.h:
9 dnl /* Define to rpl_chown if the replacement function should be used. */
13 AC_DEFUN(jm_FUNC_CHOWN,
14 [AC_REQUIRE([AC_TYPE_UID_T])dnl
15 test -z "$ac_cv_header_unistd_h" \
16 && AC_CHECK_HEADERS(unistd.h)
17 AC_CACHE_CHECK([for working chown], jm_cv_func_working_chown,
19 # include <sys/types.h>
28 char *f = "conftestchown";
29 if (creat (f, 0600) < 0)
31 exit (chown (f, (uid_t) -1, (gid_t) -1) == -1 ? 1 : 0);
34 jm_cv_func_working_chown=yes,
35 jm_cv_func_working_chown=no,
36 dnl When crosscompiling, assume chown is broken.
37 jm_cv_func_working_chown=no)
39 if test $jm_cv_func_working_chown = no; then
40 LIBOBJS="$LIBOBJS chown.o"
41 AC_DEFINE_UNQUOTED(chown, rpl_chown)