Automake and dejagnu's site.exp file

[NightStrike]

>From the manual:

Automake will generate rules to create a local site.exp file, defining
various variables detected by configure. This file is automatically
read by DejaGnu. It is OK for the user of a package to edit this file
in order to tune the test suite. However this is not the place where
the test suite author should define new variables: this should be done
elsewhere in the real test suite code. Especially, site.exp should not
be distributed.


Why is there no way to add things to the site.exp file?  For instance,
site.exp currently makes no use of the $sysroot variable set by
configure's "--with-sysroot" in binutils.  If site.exp is not supposed
to be touched, how is adding things like $sysroot to a test
accomplished?

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