g++ and sunview (again)

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2 total messages Started by Sho Kuwamoto Wed, 05 Jul 1989 04:41

#27

Author: Sho Kuwamoto
Date: Wed, 05 Jul 1989 04:41

36 lines
1518 bytes

This may be some quirk in SunView, but my troubles with g++ and
sunview seem to come from some fundamental misunderstanding on my part
of g++ linkage.  After reducing the program as much as possible, I
came up with this:

--file test.cc
extern "C"{
#include <suntool/sunview.h>
}

main()
{
  Frame frame;
  frame = window_create(0, FRAME, 0);
}
--
g++ test.cc -I/usr3/sho/include/c++ -lsuntool -lsunwindow -lpixrect
--
which gives me the error:
pf.o: Undefined symbol __DYNAMIC referenced from text

where .../include/c++ contains the slightly mangled sunview .h files.
voss@cs.uiuc.edu suggested I make all my sunview calls from gcc and
link together.  Well, to make it as simple as possible, I removed the
extern "C" declaration and compiled with gcc to get an object file.  I
linked it with the sunview libraries using the g++ linker, and I got
the same error.  Are the sunview libraries incompatible with g++?  Or
am I linking C code and C++ code together incorrectly?  I am running
g++ 1.35.0 and gcc 1.35.

-Sho



-- 
address: sho@risc.com <-- NOTE:  Not the same as above.

Re: g++ and sunview (again)

#35

Author: Roy Marantz
Date: Tue, 11 Jul 1989 16:57

22 lines
1132 bytes

In article <2343@pur-phy> sho@pur-phy (Sho Kuwamoto) writes:

> This may be some quirk in SunView, but my troubles with g++ and
> sunview seem to come from some fundamental misunderstanding on my part
> of g++ linkage.  After reducing the program as much as possible, I
> came up with this:

...

> pf.o: Undefined symbol __DYNAMIC referenced from text

...

I believe that the symbol __DYNAMIC is defined by the loader when you
use dynamic (instead of static) linking.  The g++ says (or implies)
that it doesn't have the correct crt0 program to handle dynamic
loading, so try telling ld(1) to statically link the program.

Roy
-- 
uucp:   {backbone}!rutgers!aramis.rutgers.edu!marantz
arpa:   marantz@aramis.rutgers.edu

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