how to retrieve expanded variables from configure?

[none none]

hi all

im not very familiar with autoconf currently so im not sure my following
assumptions are correct
so, afaik, autoconf and its resulting configure script set many variables
e.g. exec_prefix or bindir, ...

what i try to achive is extract an expanded representation of all variables
configure can/will set
the reason is
1) im just interested about the resulting variables, just to know which can
be used
2) i want use those variables from configure to search/replace using a c++
template engine, so i need to pipe
    all configure variables to the template engine

thats why i need the variables configure produces fully expanded

i tried a configure.in like this
AC_INIT()
set

but exec_prefix is for example 'NONE' but should be /usr/local
which indeed makes sense cause AC_OUTPUT is missing

so any help on this would be great
thx @ ll