Macro: etr_sysv_ipc

Back to the Main Page. | Download the M4 Source.

# etr_sysv_ipc

## Synopsis

`ETR_SYSV_IPC`

## Version

1.1 (2001/07/26) Miscellaneous @ ac-archive-0.5.32

## Author

Warren Young <warren@etr-usa.com>

## Description

This macro checks for the SysV IPC header files. It only checks that you can compile a program with them, not whether the system actually implements working SysV IPC.

## M4 Source Code

    AC_DEFUN([ETR_SYSV_IPC],
    [
    AC_CACHE_CHECK([for System V IPC headers], ac_cv_sysv_ipc, [
            AC_TRY_COMPILE(
                    [
                            #include <sys/types.h>
                            #include <sys/ipc.h>
                            #include <sys/msg.h>
                            #include <sys/sem.h>
                            #include <sys/shm.h>
                    ],, ac_cv_sysv_ipc=yes, ac_cv_sysv_ipc=no)
    ])

            if test x"$ac_cv_sysv_ipc" = "xyes"
            then
                    AC_DEFINE(HAVE_SYSV_IPC, 1, [ Define if you have System V IPC ])
            fi
    ]) dnl ETR_SYSV_IPC