[Opencxx-users] Use OpenC++ with autoconf / configure

[Marc W. <Mar...@si...>]

Now I have a C++ compiler executable named "trace", which 
changes all classes by adding function trace to all member 
functions.

If I compile with
  trace -I /path/to/fntrace -d-include -dfntrace.hxx \
        -- -o x x.cpp
instead of
  g++ -o x x.cpp

Then my classes in x.cpp print a very verbose function 
trace.

Now I have created a huge project with GNU Autotools, so to 
build it, simply call:
  ./configure && make

Question:

Can I exchange the GNU g++ by my own "trace" without 
changing a single line in my project?

Approach:

The first approach is:
  CXX="trace -I <path> -d-include -dfntrace.hxx --" \
    ./configure && make

But unfortunately configure fails because link options are 
not passed to the linker, i.e. The following does not work:
  trace <as-above> -- -o x x.cpp -liberty

But I get the error message:
  [MetaclassRegistration...]
  EXECUTING g++ g++ -I <path> -include fntrace.hxx \
            -liberty -D__opencxx -E -o conftest.occ \
            -x c++ conftest.cc
  g++: -liberty: linker input file unused because \
                 linking not done
  EXECUTING g++ g++ -o conftest -g -O2 conftest.ii

  -> Link errors, because the second, not the first call,
     must be with -liberty, but the second call is missing
     the link option. Why?

Is this a bug or missing feature in OpenC++? I think so.

Any other idea?

Other question:
  How do I split my homebrew enhanced compiler "trace" into 
the three common steps: Preprocessing, compiling, linking? 
I suppose, I only need my own compiler for preprocessing, 
i.e. to generate x.ii, then for compiling and linking, I 
can use the normal g++?

Thank you
Regards
Marc