SYSV vs BSD signal blues :-(

Wed, 11 Sep 96 15:54:54 CST

Hello,

We've seen some signal related troubles when building the RTS lately.
This is about what's happening:

* GPC's RTS installs a signal handler to give pretty error messages when a 
  signal is caught. This is ONLY implemented for BSD like systems, probably 
  because Juki didn't have access to a SYSV style box.

* SYSV and BSD differ in the number of signals and their meaning.

* Some BSD boxes don't implement all signals > 16. (SIGXCPU etc.)

* Some SYSV boxes implement (a range of) BSD-only signals, making it hard 
  to dectect a true BSD box.

I'm getting tired of writing ever more clever system identification 
routines that break on the next system I encounter.

I think I'll just rewrite the signal related stuff in rts-rt0.c, implement 
some BSD/SYSV independant routines that ONLY mask signals that are actually 
present on the target system.

How 'bout it?

JanJaap

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J.J. van der Heijden (j.j.vanderheijden@student.utwente.nl)