run configure on different machines

[A.P. Horst]

Hello,

for several projects we use autoconf for configuration and checking. Now 
a colleague of mine checked out one of these projects, tried to 
configure it (seemingly succeeded), but the build failed. It turns out 
that config.h generated by configure is full of #undef [something]. 
Nothing is defined, not even PACKAGE. In fact, there is also an #undef 
PACKAGE.
How can this be? Isn't configure supposed to work across machines?
The problem got solved by him running autoreconf -i. But I do not think 
this is how it is supposed to be.


Arie