-# sys_ioctl_h.m4 serial 1
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# sys_ioctl_h.m4 serial 8
+dnl Copyright (C) 2008-2010 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.
dnl header file, such as <unistd.h> or <stropts.h>, is needed for that.
AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl],
[gl_cv_decl_ioctl_in_sys_ioctl_h],
- [AC_CHECK_DECL([ioctl],
+ [dnl We cannot use AC_CHECK_DECL because it produces its own messages.
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT([#include <sys/ioctl.h>])],
+ [(void) ioctl;])],
[gl_cv_decl_ioctl_in_sys_ioctl_h=yes],
- [gl_cv_decl_ioctl_in_sys_ioctl_h=no],
- [#include <sys/ioctl.h>])
+ [gl_cv_decl_ioctl_in_sys_ioctl_h=no])
])
- if test $gl_cv_decl_ioctl_in_sys_ioctl_h != yes; then
- SYS_IOCTL_H='sys/ioctl.h'
- fi
else
HAVE_SYS_IOCTL_H=0
- SYS_IOCTL_H='sys/ioctl.h'
fi
AC_SUBST([HAVE_SYS_IOCTL_H])
- dnl Execute this unconditionally, because SYS_IOCTL_H may be set by other
- dnl modules, after this code is executed.
+ dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <sys/ioctl.h>
+/* Some platforms declare ioctl in the wrong header. */
+#ifndef __GLIBC__
+# include <unistd.h>
+#endif
+ ]], [ioctl])
])
dnl Unconditionally enables the replacement of <sys/ioctl.h>.
AC_DEFUN([gl_REPLACE_SYS_IOCTL_H],
[
- AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
- SYS_IOCTL_H='sys/ioctl.h'
+ dnl This is a no-op, because <sys/ioctl.h> is always overridden.
+ :
])
AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
- GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS],
GNULIB_IOCTL=0; AC_SUBST([GNULIB_IOCTL])
dnl Assume proper GNU behavior unless another module says otherwise.
SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H])
- SYS_IOCTL_H=''; AC_SUBST([SYS_IOCTL_H])
+ SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+ AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
+ REPLACE_IOCTL=0; AC_SUBST([REPLACE_IOCTL])
])