Dear Andreas, Alain,

since it was already almost through, I finished the flexdll bootstrapping build (get binary flexdll - build Ocaml - build flexdll - rebuild Ocaml) with the modified flexdll sources (patch attached for reference). My build environment is Mingw64 host/target build on Cygwin64.

My observations are:

- Some Ocaml binaries are substantially different between the first and second build (not just different build path). Not sure if this is expected.
- Menhir, CamlP4 and CamlP5 build fine with the second stage Ocaml, but I didn't test if they work. I run all my scripts with "set -o errexit", so I am quite sure that it was successful if it runs through.
- lablgtk make stops essentially with the first build command
 
	make -C src world
	make[1]: Entering directory '/home/soegtrop/OCAML/lablgtk-2.18.3/src'
	ocamlc.opt -c -pp "camlp4o -impl" -impl varcc.ml4
	Fatal error: cannot load shared library dllunix
	Reason: Invalid access to memory location.
	File "varcc.ml4", line 1:
	Error: Error while running external preprocessor
	Command line: camlp4o -impl "varcc.ml4" > D:\bin\cygwin64test\tmp\ocamlppa21f37

So as it looks this change results in a corrupted dllunix library.

I will now try the approach suggested by Andreas.

Best regards,

Michael
Intel Deutschland GmbH
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