[Scons-dev] detect and where_is

[Russel Winder]

The detect function in TestSCons.TestScons fiddles with variables and
then calls where_is. The where_is function uses the user's PATH by
default. This means where_is returns True in situation where SCons has
no access to the executable. This means that using the where_is function
to determine whether a test should run is completely useless since it
effectively lies :-(

So what is the SCons idiom for determining whether an executable is
accessible to SCons when executing?

-- 
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at winder.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
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