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etr_struct_semun

SYNOPSIS

ETR_STRUCT_SEMUN

DESCRIPTION

This macro checks to see if sys/sem.h defines struct semun. Some systems do, some systems don't. Your code must be able to deal with this possibility; if HAVE_STRUCT_SEMUM isn't defined for a given system, you have to define this structure before you can call functions like semctl().

You should call ETR_SYSV_IPC before this macro, to separate the check for System V IPC headers from the check for struct semun.

SOURCE CODE

http://autoconf-archive.cryp.to/etr_struct_semun.m4

LICENSE

Copyright © 2008 Warren Young <warren@etr-usa.com>

Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.