diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ioctl_request.m4 | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/m4/ioctl_request.m4 b/m4/ioctl_request.m4 new file mode 100644 index 000000000..e5ea6d346 --- /dev/null +++ b/m4/ioctl_request.m4 @@ -0,0 +1,52 @@ +dnl Simple macro to find the type of the ioctl request parameter +dnl Copyright (c) 2007 xine project +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +dnl 02110-1301, USA. +dnl +dnl As a special exception, the xine project, as copyright owner of the +dnl macro gives unlimited permission to copy, distribute and modify the +dnl configure scripts that are the output of Autoconf when processing the +dnl Macro. You need not follow the terms of the GNU General Public +dnl License when using or distributing such scripts, even though portions +dnl of the text of the Macro appear in them. The GNU General Public +dnl License (GPL) does govern all other use of the material that +dnl constitutes the Autoconf Macro. +dnl +dnl This special exception to the GPL applies to versions of the +dnl Autoconf Macro released by the xine project. When you make and +dnl distribute a modified version of the Autoconf Macro, you may extend +dnl this special exception to the GPL to apply to your modified version as +dnl well. + + +dnl Usage AC_IOCTL_REQUEST +AC_DEFUN([AC_IOCTL_REQUEST], [ + AC_CACHE_CHECK([type of request parameter for ioctl()], + ac_cv_ioctl_request, + [for ac_ioctl_request_type in "unsigned long" "int" + do + AC_TRY_LINK([ + #include <sys/ioctl.h> + int ioctl(int fd, $ac_ioctl_request_type request, ...); + ], [], [ac_cv_ioctl_request=$ac_ioctl_request_type]) + done]) + + if test "x$ac_cv_ioctl_request" = "x"; then + AC_MSG_ERROR([Unable to determine the type for ioctl() request parameter]) + fi + + AC_DEFINE_UNQUOTED([IOCTL_REQUEST_TYPE], $ac_cv_ioctl_request, [Type of the request parameter for ioctl()]) +]) |