-# serial 2
+# serial 5
# See if we need to provide mknod replacement.
-dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_MKNOD],
[
AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_REQUIRE([gl_FUNC_MKFIFO])
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_CHECK_FUNCS_ONCE([mknod])
if test $ac_cv_func_mknod = no; then
HAVE_MKNOD=0
- AC_LIBOBJ([mknod])
else
dnl Detect BSD bug, where mknod requires root privileges to create fifo.
AC_CACHE_CHECK([whether mknod can create fifo without root privileges],
[AC_LANG_PROGRAM(
[[#include <sys/stat.h>
#include <unistd.h>
+
+ /* Copied from root-uid.h. FIXME: Just use root-uid.h. */
+ #ifdef __TANDEM
+ # define ROOT_UID 65535
+ #else
+ # define ROOT_UID 0
+ #endif
]], [[/* Indeterminate for super-user, assume no. Why are you running
configure as root, anyway? */
- if (!geteuid ()) return 99;
+ if (geteuid () == ROOT_UID) return 99;
if (mknod ("conftest.fifo", S_IFIFO | 0600, 0)) return 2;]])],
[gl_cv_func_mknod_works=yes],
- [if test $? == 99 && test x"$FORCE_UNSAFE_CONFIGURE" = x; then
+ [if test $? = 99 && test x"$FORCE_UNSAFE_CONFIGURE" = x; then
AC_MSG_FAILURE([you should not run configure as root ]dnl
[(set FORCE_UNSAFE_CONFIGURE=1 in environment to bypass this check)])
fi
gl_cv_func_mknod_works=no],
- [gl_cv_func_mknod_works="guessing no"])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_mknod_works="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_mknod_works="guessing no" ;;
+ esac
+ ])
rm -f conftest.fifo])
- if test "$gl_cv_func_mknod_works" != yes; then
- AC_DEFINE([MKNOD_FIFO_BUG], [1], [Define to 1 if mknod cannot create
- a fifo without super-user privileges])
- fi
+ case "$gl_cv_func_mknod_works" in
+ *yes) ;;
+ *)
+ REPLACE_MKNOD=1
+ AC_DEFINE([MKNOD_FIFO_BUG], [1], [Define to 1 if mknod cannot create
+ a fifo without super-user privileges])
+ ;;
+ esac
dnl Systems that mishandle trailing slash on mkfifo also goof on mknod.
- if test $REPLACE_MKFIFO = 1 || test "$gl_cv_func_mknod_works" != yes; then
+ if test $REPLACE_MKFIFO = 1; then
REPLACE_MKNOD=1
- AC_LIBOBJ([mknod])
fi
fi
])