diff options
Diffstat (limited to 'm4/sys_ioctl_h.m4')
| -rw-r--r-- | m4/sys_ioctl_h.m4 | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/m4/sys_ioctl_h.m4 b/m4/sys_ioctl_h.m4 index bf54a422ca..829dc610dc 100644 --- a/m4/sys_ioctl_h.m4 +++ b/m4/sys_ioctl_h.m4 @@ -1,4 +1,4 @@ -# sys_ioctl_h.m4 serial 4 +# sys_ioctl_h.m4 serial 5 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, @@ -33,6 +33,15 @@ AC_DEFUN([gl_SYS_IOCTL_H], AC_SUBST([HAVE_SYS_IOCTL_H]) 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>. |