SunOS vs. Ultrix comparison
Rod Stephens
krs0 at gte.com
Thu Jan 24 22:53:10 AEST 1991
In article <8012 at castle.ed.ac.uk> yfcw14 at castle.ed.ac.uk (K P Donnelly) writes:
:
:
>
>e.g. I have heard that SunOS has "shareable libraries". I am not sure
>what these are, but they sound very like the dynamic linking of object
>files at load time which Edinburgh University's EMAS operating system
>(now disappearing) has had for over ten years, and the lack of which I
>find intensely frustrating as I try to move our program libraries to
>Unix. Makefiles are a very poor substitute. Can anyone tell me whether
>SunOS shareable libraries are really that good, or whether Ultrix is
>likely to aquire anything similar.
Shareable libraries mean 2 applications using the same library
functions can share the same image of the library and do not need to
include the library in their executables. This is REALLY nice for X
windows where a "hello_world" program takes about a megabyte -- mostly
X library code. "Dynamic linking" (late binding) is a seperate but
related issue.
DEC says Ultrix will be OSF/1-based around the end of 1991 and OSF/1
specifies shareable libraries and late binding. DEC will probably
implement them in Ultrix.
>Another thing which I find frustrating as we try to move to Unix is the
>way that many utilities strip the eighth bit at every opportunity. Does
>Ultrix have better 8-bit character set support, perhaps carried over
>from the DEC multinational character set on VMS?
>
> Kevin Donnelly
OSF/1 also apecifies "8-bit clean" functions which means functions are
not allowed to strip off the 8th bit.
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| Rod Stephens | "Haven't I told you not to play |
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| krs0 at gte.com | |
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