SCons build, help needed

[Karel Miklav]

Alex, thanks for your reply. stiv @ blender forums pointed me to the 
sixth paragraph in the SCons' manual:

"scons does not automatically propagate the external environment used to 
execute scons to the commands used to build target files. This is so 
that builds will be guaranteed repeatable regardless of the environment 
variables set at the time scons is invoked. ..."

I don't know how do they want to integrate with other build tools, but 
the current mechanism in bsd.scons.mk is left at the mercy of each SCons 
user. What do you think?