Mail Archives: cygwin/2000/10/11/21:42:11
"Larry Hall (RFK Partners, Inc)" wrote:
>
> At 05:53 PM 10/11/2000, J. E. Touma wrote:
> >Hi all,
> >I'm having a problem compiling my C++ code under cygwin. It compiles
> >fine under Linux and Solaris.
> >Here is the error message I'm getting after I type make
> >
> >g++ -mno-cygwin -L/cygnus/mingw/lib -o afsri vecmatlib.o myutils.o Sri.o
> >mymath.o srifuncs.o irmaimage.o -lm
> >Sri.o(.text$__ls__H3ZcZt18string_char_traits1ZcZt24__default_alloc_template2b0i0_R7ostreamRCt12basic_string3ZX01ZX11ZX21_R7ostream+0x18):Sri.cc:
> >undefined reference to `ostream::write(char const *, int)'
> >collect2: ld returned 1 exit status
> >make: *** [afsri] Error 1
> >
> >
> >Now if I compile without -mno-cygwin -L/cygnus/mingw/lib (so that I can
> >run the code with the DLL) it works fine.
> >I have all the appropriate header files. What is frustrating is that I
> >don't even use ostream::write(char const *, int)' in the Sri.cc
> >mentioned above. Yes I open a file stream but I write asci text to it,
> >not binary.
> >
> >Is there a problem with the fstream.h file? It is on my system.
> >
> >Any insight into this problem is appreciated.
> >
> >Regads,
> >jim
>
> Your problem is obviously at link time, not compile time, so there's no
> issue with include files. Your problem is the library you want isn't
> getting linked in. So, the question is, which library are you using?
> Are you pulling in ostream from iostream.h or ostream? This will tell
> you whether you need the standard C++ library or the "old" stream stuff.
> Once you know that, you'll be better able to find the library you're looking
> for. As I recall, MS sectioned out the stream stuff from their standard
> runtime library back around VC++ 4 or 5. This was done to accommodate the
> use of either the "old" stream implementation or the new standard C++
> template stuff. I forget all the details but searching the MSDN site should
> tell you which libraries you need depending on which version of the stream
> stuff you're trying to use. Once you determine the library you need and
> link it in, you'll be done.
>
> Strictly speaking, if this works fine with Cygwin and not with -mno-cygwin,
> then this is a Mingw issue. You might find some additional information and
> help on this subject if you check out www.mingw.org.
>
> Larry Hall lhall AT rfk DOT com
> RFK Partners, Inc. http://www.rfk.com
> 118 Washington Street (508) 893-9779 - RFK Office
> Holliston, MA 01746 (508) 893-9889 - FAX
Larry,
I am using the header files without the .h extension, like
#include <iostream>
using namespace std;
I am also using the latest version of cygwin.
--
Linux 2.2.13-7mdksmp #1 SMP Wed Sep 15 16:38:50 CEST 1999 i686
8:40pm up 51 days, 20:58, 3 users, load average: 2.02, 2.07, 2.01
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