glibc-2.0.94: <sys/sem.h> doesn't include union semun

[Andreas Jaeger]

>>>>> Horst von Brand writes:

 > This is what semctl(2) seems to specify, anyway. This makes util-linux-2.8b
 > fail its build. Andries.Brouwer@cwi.nl told me <sys/sem_buf.h> (which
 > contains the definition) is not mentioned by either SYSV or X/OPEN.

<sys/sem_buf.h> is only in glibc 2.0 - glibc 2.1 doesn't contain
<sys/sem_buf.h> but <bits/sem.h> where the lack of union semun is
documented.

Andreas
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