🚀 go-pugleaf

"johnp" <john.pearson@NOSPAM.co.uk> wrote in message
news:42f36665@newsgroups.borland.com...

> No matter what the include file, I get either
> "undefined symbol 'string' " & "undefined symbol 'ifstream' "

What does your code actually look like?  The only includes you need are the
following:

    #include <string>
    #include <fstream>


Gambit

BCB 3 is from way back before the C++ Language specification was revised. 
BCB 5 is newer.

Did you forget the 'std::' as in

  std::string s = "abc";

.  Ed

> johnp wrote in message
> news:42f36665@newsgroups.borland.com...
> Hi
>
> I'm porting code from BCB3 to BCB6, which uses STL string and stream 
> classes.
> No matter what the include file, I get either "undefined symbol 'string' " 
> & "undefined symbol 'ifstream' "
> or (if I include oldstl/string.stl) "multiple definitions errors"
> The BCB6 headers are below.  The // comments are mine
>
> Should I be using the old Roguewave STl or SPLport ?
> How do I get the correct header to load ?
> what is macro def  "__cplusplus"   all about
>
> #if !defined(__cplusplus)
> # include <_str.h>                                                 //'C' 
> string functions, no string class defs
> # else /* __cplusplus */
> # include <_str.h>
> # if defined(__USING_STD_NAMES__)
> # ifdef _USE_OLD_RW_STL
> # include <oldstl/string.stl>                                   // stub 
> redirector for _str.h or oldstl/string.stl
> # else
> # include <stlport/string>                                      //see 
> below
> # endif
> # endif /* __USING_STD_NAMES__ */
> #endif
>
> contents of stlport/string
>
> # ifndef _STLP_STRING
> # define _STLP_STRING
> # ifndef _STLP_OUTERMOST_HEADER_ID
> #  define _STLP_OUTERMOST_HEADER_ID 0x68
> #  include <stl/_prolog.h>                                      //contains 
> no class definitions
> # endif
> #if defined (_STLP_USE_NATIVE_STRING)     .
> # if defined (_STLP_MSVC)
> #  include <streambuf>
> #  include <istream>
> # endif
> #  include _STLP_NATIVE_HEADER(string)
> # endif /* _STLP_USE_NATIVE_STRING */
> # if !defined (_STLP_USE_NATIVE_STRING) || defined 
> (_STLP_USE_OWN_NAMESPACE)
> # include <stl/_string.h> //Standard C++ string class. Including this file 
> gives "undefined symbol 'string'"
> # else
> # include <stl/_string_hash.h>                                  //no class 
> definitions
> # endif /*_STLP_USE_NATIVE_STRING */
> // cleanup
> # if (_STLP_OUTERMOST_HEADER_ID == 0x68)
> #  include <stl/_epilog.h>
> #  undef _STLP_OUTERMOST_HEADER_ID
> # endif
> #endif /* _STLP_STRING */

> BCB 3 is from way back before the C++ Language specification was revised.
>BCB 5 is newer.
> Did you forget the 'std::' as in
>  std::string s = "abc";
> .  Ed
Ed - You are correct - thanks very much for that !
Oh yes, what is __cplusplus ?

"johnp" <john.pearson@NOSPAM.co.uk> wrote in message
news:42f3e92d@newsgroups.borland.com...

> Oh yes, what is __cplusplus ?

A precompiler define that indicates whether the current file is being
compiled as a C++ file.  If not defined, the file is being compiled as a C
file instead.


Gambit