Download sources 3.33 , but it seems libhttrack is missing.
Downloaded 3.40 , and it fails to compile.
workspace: winHTtrack.dsk
[using VC6 SP6]

here is the compiler output:
--------------------Configuration: libhttrack - Win32
Debug--------------------
Compiling...
htsback.c
c:\proj\httrack\httrack\src\htsback.c(237) : warning C4013: 'fspc' undefined;
assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(410) : warning C4013: 'file_notify'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(411) : warning C4013: 'filecreateempty'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(417) : warning C4013: 'readfile'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(417) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htsback.c(590) : warning C4013: 'check_sockerror'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(1300) : warning C4013: 'filenote'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(1658) : warning C4013: 'usercommand'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(1739) : error C2065: 'oneMore' :
undeclared identifier
c:\proj\httrack\httrack\src\htsback.c(2220) : warning C4013: 'filecreate'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsback.c(2220) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htsback.c(2223) : warning C4013:
'check_fatal_io_errno' undefined; assuming extern returning int
htscache.c
c:\proj\httrack\httrack\src\htscache.c(118) : warning C4013: 'fspc' undefined;
assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(663) : warning C4013: 'filenote'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(668) : warning C4013: 'file_notify'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(669) : warning C4013: 'filecreateempty'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(683) : warning C4013: 'filecreate'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(683) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscache.c(965) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscache.c(1377) : warning C4013: 'readfile'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(1377) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscache.c(1380) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscache.c(1457) : warning C4013: 'structcheck'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(1562) : error C2040: 'readfile' : 'char
*(char *)' differs in levels of indirection from 'int ()'
c:\proj\httrack\httrack\src\htscache.c(1563) : warning C4013: 'readfile2'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscache.c(1563) : warning C4047: 'return' : 'char
*' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscache.c(1566) : error C2040: 'readfile2' :
'char *(char *,__int64 *)' differs in levels of indirection from 'int ()'
c:\proj\httrack\httrack\src\htscache.c(1595) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
htscore.c
c:\proj\httrack\httrack\src\htscore.c(408) : warning C4013: 'fspc' undefined;
assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(428) : warning C4013: 'usercommand'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(434) : warning C4013:
'hts_declareoptbuffer' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(442) : warning C4013: 'readfile_or'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(442) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(443) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(444) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(485) : warning C4013: 'filters_init'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(705) : warning C4013:
'hts_htmlcheck_loop' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(802) : error C2065:
'_hts_in_html_parsing' : undeclared identifier
c:\proj\httrack\httrack\src\htscore.c(961) : error C2065: 'htsAddLink' :
undeclared identifier
c:\proj\httrack\httrack\src\htscore.c(961) : warning C4047: '=' : 'int
(__cdecl *)(struct htsmoduleStruct *,char *)' differs in levels of indirection
from 'int '
c:\proj\httrack\httrack\src\htscore.c(1248) : warning C4047: '=' : 'int
(__cdecl *)(struct htsmoduleStruct *,char *)' differs in levels of indirection
from 'int '
c:\proj\httrack\httrack\src\htscore.c(1324) : warning C4013: 'readfile2'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(1324) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(1417) : warning C4047: '=' : 'int
(__cdecl *)(struct htsmoduleStruct *,char *)' differs in levels of indirection
from 'int '
c:\proj\httrack\httrack\src\htscore.c(1705) : warning C4013: 'file_notify'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(1706) : warning C4013: 'filesave'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(1708) : warning C4013:
'check_fatal_io_errno' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(1769) : warning C4047: '=' : 'int
(__cdecl *)(struct htsmoduleStruct *,char *)' differs in levels of indirection
from 'int '
c:\proj\httrack\httrack\src\htscore.c(2420) : warning C4013: 'filecreate'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(2420) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(2455) : error C2040: 'filecreate' :
'struct _iobuf *(char *)' differs in levels of indirection from 'int ()'
c:\proj\httrack\httrack\src\htscore.c(2461) : warning C4013: 'filenote'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(2497) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(2535) : error C2371: 'file_notify' :
redefinition; different basic types
c:\proj\httrack\httrack\src\htscore.c(2549) : error C2371: 'usercommand' :
redefinition; different basic types
c:\proj\httrack\httrack\src\htscore.c(2575) : warning C4013: 'usercommand_exe'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(2580) : error C2371: 'usercommand_exe' :
redefinition; different basic types
c:\proj\httrack\httrack\src\htscore.c(2796) : warning C4013: 'back_fill'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(2923) : error C2040:
'hts_declareoptbuffer' : 'struct httrackp *(struct httrackp *)' differs in
levels of indirection from 'int ()'
c:\proj\httrack\httrack\src\htscore.c(2930) : error C2065: 'sig_term' :
undeclared identifier
c:\proj\httrack\httrack\src\htscore.c(2930) : warning C4047: 'function' :
'void (__cdecl *)(int )' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(2930) : warning C4024: 'signal' :
different types for formal and actual parameter 2
c:\proj\httrack\httrack\src\htscore.c(2934) : error C2373: 'sig_term' :
redefinition; different type modifiers
c:\proj\httrack\httrack\src\htscore.c(2941) : warning C4047: 'function' :
'void (__cdecl *)(int )' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(2941) : warning C4024: 'signal' :
different types for formal and actual parameter 2
c:\proj\httrack\httrack\src\htscore.c(2948) : warning C4047: 'initializing' :
'struct httrackp *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscore.c(3036) : warning C4013: 'check_stdin'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscore.c(3397) : error C2373: 'htsAddLink' :
redefinition; different type modifiers
htscoremain.c
c:\proj\httrack\httrack\src\htscoremain.c(619) : warning C4013: 'next_token'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscoremain.c(619) : warning C4047: '=' : 'char *'
differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscoremain.c(904) : warning C4013: 'ask_continue'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscoremain.c(1619) : warning C4013: 'readfile'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscoremain.c(1619) : warning C4047:
'initializing' : 'char *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscoremain.c(2134) : warning C4013: 'structcheck'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscoremain.c(2308) : warning C4013: 'fspc'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htscoremain.c(2343) : error C2065: 'sig_ask' :
undeclared identifier
c:\proj\httrack\httrack\src\htscoremain.c(2343) : warning C4047: 'function' :
'void (__cdecl *)(int )' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscoremain.c(2343) : warning C4024: 'signal' :
different types for formal and actual parameter 2
c:\proj\httrack\httrack\src\htscoremain.c(2344) : error C2065: 'sig_finish' :
undeclared identifier
c:\proj\httrack\httrack\src\htscoremain.c(2344) : warning C4047: 'function' :
'void (__cdecl *)(int )' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htscoremain.c(2344) : warning C4024: 'signal' :
different types for formal and actual parameter 2
c:\proj\httrack\httrack\src\htscoremain.c(2367) : warning C4013: 'httpmirror'
undefined; assuming extern returning int
htsname.c
c:\proj\httrack\httrack\src\htsname.c(305) : warning C4013: 'fspc' undefined;
assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(364) : error C2065:
'_hts_in_html_parsing' : undeclared identifier
c:\proj\httrack\httrack\src\htsname.c(364) : warning C4013:
'back_pluggable_sockets_strict' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(364) : warning C4013: 'engine_stats'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(364) : warning C4013: 'backlinks_done'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(364) : warning C4013:
'hts_htmlcheck_loop' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(392) : warning C4013: 'back_fillmax'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsname.c(1294) : warning C4013: 'nombre_digit'
undefined; assuming extern returning int
htsparse.c
c:\proj\httrack\httrack\src\htsparse.c(402) : warning C4013: 'fspc' undefined;
assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(625) : warning C4013: 'file_notify'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(627) : warning C4013: 'filecreate'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(627) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htsparse.c(685) : warning C4013: 'usercommand'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(2556) : warning C4047: 'initializing' :
'struct _iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htsparse.c(3111) : warning C4013:
'hts_htmlcheck_postprocess' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(3118) : warning C4047: '=' : 'struct
_iobuf *' differs in levels of indirection from 'int '
c:\proj\httrack\httrack\src\htsparse.c(3118) : warning C4013:
'check_fatal_io_errno' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(3118) : warning C4013: 'filenote'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(3418) : warning C4013: 'host_ban'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(3804) : warning C4013: 'back_fillmax'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(3934) : warning C4013: 'check_stdin'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(4198) : error C2065:
'_hts_in_html_parsing' : undeclared identifier
c:\proj\httrack\httrack\src\htsparse.c(4198) : warning C4013:
'back_pluggable_sockets_strict' undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(4198) : warning C4013: 'engine_stats'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(4198) : warning C4013: 'backlinks_done'
undefined; assuming extern returning int
c:\proj\httrack\httrack\src\htsparse.c(4198) : warning C4013:
'hts_htmlcheck_loop' undefined; assuming extern returning int
Generating Code...
Error executing cl.exe.

WinHTTrack.exe - 17 error(s), 91 warning(s)
----------------------------------------------------------------------------
I think there's a problem with definition of HTS_ANALYSTE.
Could pin point it.
can someone help me on this ?