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Local Information on Libsx
</title>
<h1> Local Libsx Information </h1>
<p>
<h2> Access to libsx </h2>
<p>
Libsx is currently compiled only for the Sun workstations running
either Sunos 4.1.3 or Solaris 2.3. The libsx library is in
<tt>/usr/local/lib</tt>, and the include files are in
<tt>/usr/local/include</tt>.
<p>
<h2> Compiling and Linking to libsx with C </h2>
<p>
<h3> SunOS 4.1.x </h3>
<p>
The include files for X11 and libsx are in the standard places, so
no special options are needed when compiling and linking.
<p>
<h3> Solaris 2.3 </h3>
<p>
The X11 libraries are not in a standard location. <tt>-L/usr/x11/lib</tt>
must be used to specify the location of the libraries. <tt>-R/usr/x11/lib</tt>
needs to be used so that the libraries are found when run-time linking
is performed.
<pre>
cc -I/usr/x11/include -I/usr/local/include -c file.c
cc -o file -L/usr/local/lib -lsx -L/usr/x11/lib -lXaw -lXmu -lXt -lX11 -lXext \\
-R/usr/x11/lib -lsocket
</pre>
<p>
<h2> Using C++ with libsx </h2>
<p>
Since the libsx functions were compiled with a C compiler, the libsx
include file must be bracketed with an <tt>extern "C"</tt> declaration.
<p>
<pre>
extern "C" {
#include "libsx.h"
}
</pre>
<p>
<h3> Sun Specific Instructions when using C++ (Solaris 2.3) </h3>
<p>
Due to a bug in the C++ compiler, the -R option appears to be
ignored by the linker. Setting the environment variable LD_RUN_PATH
should make run time linking work properly. This variable should
be set during the compilation.
<p>
<pre>
setenv LD_RUN_PATH /opt/SUNWspro/lib:/usr/x11/lib
</pre>
<h3> Example Makefile for C++ </h3>
<p>
<pre>
CPLUS = CC
LIBS = -L/usr/local/lib -lsx -L/usr/x11/lib -lXaw -lXmu -lXt -lX11 -lXext \
-R/usr/x11/lib -lsocket
CCFLAGS = -I/usr/local/include -I/usr/x11/include
#--------------------------------------------------------------------------
all: gr
gr: gr.o Graph.o
$(CPLUS) -o gr gr.o Graph.o $(LIBS)
gr.o: gr.cc
$(CPLUS) -c $(CCFLAGS) gr.cc
Graph.o: Graph.cc Graph.h
$(CPLUS) -c $(CCFLAGS) Graph.cc
</pre>
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