>Can you try passing "-ccopt -cygpath" to ocamlc?

Yes, but the error persists...

| acer@PC~/UMH/Master 2
| $ ocamlc -ccopt -cygpath -I "C:/Program Files/Objective
Caml/lib/site-lib/lacam
| l" bigarray.cma lacaml.cma -verbose d.ml
| + flexlink -chain mingw -exe -o "camlprog.exe"   "-LC:/Program
Files/Objective C
| aml/lib/site-lib/lacaml" "-LC:\Program Files\Objective Caml\lib"
"C:\DOCUME~1\ac
| er\LOCALS~1\Temp\camlprim6bb2c7.c" "-llacaml_stubs" "-llapack" "-lblas"
"-lbigar
| ray" "-lcamlrun" -lws2_32 -cygpath -Lc:/cygwin/lib
| ** Fatal error: Error while reading c:/cygwin/lib\liblapack.a:
Sys_error("Invali
| d argument")
| File "d.ml", line 1, characters 0-1:
| Error: Error while building custom runtime system

By the way, where can I see whether the file in question is a symbolic link?

Thank you for your help,

Bertrand Desmons