Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!purdue!mentor.cc.purdue.edu!pur-ee!pur-phy!sho
From: sho@pur-phy (Sho Kuwamoto)
Newsgroups: gnu.g++
Subject: g++ and sunview (again)
Message-ID: <2343@pur-phy>
Date: 5 Jul 89 04:41:40 GMT
Reply-To: sho@newton.physics.purdue.edu.UUCP (Sho Kuwamoto)
Organization: Purdue Univ. Physics Dept., W. Lafayette, IN
Lines: 36

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.