g++ vs Sun C++ 2.1

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2 total messages Started by Rudy Bonefas Fri, 22 Jan 1993 15:45

#299

Author: Rudy Bonefas
Date: Fri, 22 Jan 1993 15:45

18 lines
1242 bytes

For financial reasons we are considering switching from the Sun 2.1 C++ compiler to
GNU's g++.  I have already obtained release 2.3.3 of gcc, built it, and am beginning
to run our massive C++ library through it.  However I have a couple of questions for
the net:

	1.  How do I build shared libraries with g++? I tried the -shared switch but
	     it tells me that it doesn't recognize that option.

	2.  Aside from the obvious financial benefits of g++, can any of you former
	 Sun C++ users inform me of the benefits/drawbacks to switching to g++.

	3.  I understand that g++ supports templates.  Where exactly is the 
	  documentation for how to create template classes?  The only temmplate
	  implementation which I am familiar with is ODI's compiler. 

Thanks in advance for your responses,

Rudy G. Bonefas (RGB - graphics is my middle name)

Re: g++ vs Sun C++ 2.1

#300

Author: Klamer Schutte
Date: Sun, 24 Jan 1993 15:37

39 lines
1954 bytes

In <1993Jan22.154545.6314@roadnet.com> rgb@roadnet.ups.com (Rudy Bonefas) writes:

] 1.  How do I build shared libraries with g++? I tried the -shared switch but
]	     it tells me that it doesn't recognize that option.

-fpic and -fPIC should do what you want.

] 2.  Aside from the obvious financial benefits of g++, can any of you former
]	 Sun C++ users inform me of the benefits/drawbacks to switching to g++.

g++ does not give any 'Not implemented' messages. However, some things are not
implemented, and make g++ dump core :-(.

g++ has (some) template support.

The C++ library with Sun C++ is a shared lib. libg++ is not, and this results
in quite big files. For example, this program:

#include        <iostream.h>

main()
{
        cout << "Hello, world\n";

        return 0;
}

resulted in a 16K executable for Sun C++, and a 81K executable for g++.

] 3.  I understand that g++ supports templates.  Where exactly is the 
]	  documentation for how to create template classes?  The only temmplate
]	  implementation which I am familiar with is ODI's compiler. 

See ARM. g++ specific documentation does not exist.

--
Klamer Schutte			Tel: +31-53-892778	Fax: +31-53-340045
Faculty of electrical engineering -- University of Twente, The Netherlands
preferred: klamer@mi.el.utwente.nl     SMTP: klamer@utelmi01.el.utwente.nl

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