Hello Philippe
I would like to focus on getting 5.17.00 going using the borland compiler and then I can try the later versions of CINT. So far I have had no luck with any other version except 5.15.153 
Looking at the make file settings for the borland compiler on earlier versions could you suggest what I need to add to the configuration file ??
Also once I have the configuration file what is the command to build cint from cygwin ??
regards
david
[code]CINTSYSDIR = \cint
############################################################
platform/borlandcc5
Platform dependent information for Borland C++ Compiler 5.5
############################################################
#BCCDIR = c:\Borland\BCC55
#BCCINC = -I$(BCCDIR)\Include
#BCCLIB = -L$(BCCDIR)\Lib
Tools
RM = del
CP = copy
KRCC = bcc32 $(BCCINC)
CC = bcc32 $(BCCINC)
CPP = bcc32 -P $(BCCINC)
LD = bcc32 $(BCCINC) $(BCCLIB)
CPREP = cpp32 -Sr -Sc $(BCCINC)
CPPPREP = cpp32 -Sr -Sc $(BCCINC)
Compiler and linker option
CCDLLOPT =
LDDLLOPT = -WD
OPTIMIZE = -O2
LDOPT =
SHLIB_OPT =
SYSMACRO = -DG__BORLANDCC5 -DG__NEWSTDHEADER
OTHMACRO =
SYSIPATH =
libraries
MAINO = $(CINTSYSDIR)\main\G__cppmain.obj
CINTLIB = $(CINTSYSDIR)/libcint.lib
READLINEA =
APIO = Api.obj Class.obj BaseCls.obj Type.obj DataMbr.obj Method.obj MethodAr.obj CallFunc.obj Typedf.obj Apiif.obj Token.obj
RANLIB =
STDLIBS = cbstrm.obj v6_stdstrct.obj
PLATFORM = v6_winnt.obj
source code postfix
CSRCPOST = .c
CHDRPOST = .h
CPPSRCPOST = .cpp
CPPHDRPOST = .h
OBJPOST = .obj
DLLPOST = .dll[/code]