by Erik Max Franci » Sat, 20 May 2000 04:00:00
--
__ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE
/ \ Love is the triumph of imagination over intelligence.
\__/ H.L. Mencken
Physics reference / http://www.alcyone.com/max/reference/physics/
A physics reference.
by Markus Kossman » Sun, 21 May 2000 04:00:00
> Hi,
> Trying to learn C++. I can compile a simple program with c++
> but not gcc. I looked at the How-To but it did not describe
> setting up the C++ library.
> gcc -v has:
> Reading specs from
> /usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/specs
> gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
> The man page talks about the difference between gcc and c++
> being in the style of linking where gcc assumes C style linking
> and g++ assumes C++ style linking. What is this style
> difference? The error I got when compiling, well probably
> linking was cout was undefined so I assume it could not find some
> object file where the def was.
--
Markus Kossmann
by David Kirkpatric » Sun, 21 May 2000 04:00:00
> > Hi,
> > Trying to learn C++. I can compile a simple program with c++
> > but not gcc. I looked at the How-To but it did not describe
> > setting up the C++ library.
> > gcc -v has:
> > Reading specs from
> > /usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/specs
> > gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
> > The man page talks about the difference between gcc and c++
> > being in the style of linking where gcc assumes C style linking
> > and g++ assumes C++ style linking. What is this style
> > difference? The error I got when compiling, well probably
> > linking was cout was undefined so I assume it could not find some
> > object file where the def was.
> gcc ist the frontend of the C-Compiler. So it doesn't link the C++
> standard library ( which contains cout) automatically and you will
> need to add a -lstdc++ to link with that library.
> --
> Markus Kossmann
by David Kirkpatric » Sun, 21 May 2000 04:00:00
Hi Erik,
The problem was::
tmp/ccmy4nbs.o: In function main:
tmp/ccmy4nbs.o: Undefined reference to 'cout'
tmp/ccmy4nbs.o: Undefined reference to 'stream::operator(char const*)'
Markus Kossmann sent the answer.
gcc ist the frontend of the C-Compiler. So it doesn't link the C++
standard library ( which contains cout) automatically and you will
need to add a -lstdc++ to link with that library.
David
> > Trying to learn C++. I can compile a simple program with c++
> > but not gcc.
> Well, what error did you get? It's a little hard to offer assistance
> when you haven't told us what's wrong.
> --
> __ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE
> / \ Love is the triumph of imagination over intelligence.
> \__/ H.L. Mencken
> Physics reference / http://www.alcyone.com/max/reference/physics/
> A physics reference.
1. gcc does not compile C++ code?
I got gcc2.95.3 from sunfreeware.com, installed on my Sunblade100 workstation
which runs Solaris 8, and it works pretty well for C code. However, when I
tried to compile a C++ code, it does not work. Look:
hostname> gcc test.cpp
Undefined first referenced
symbol in file
cout /var/tmp/ccoYSFew.o
ostream::operator<<(ostream &(*)(ostream &))/var/tmp/ccoYSFew.o
endl(ostream &) /var/tmp/ccoYSFew.o
ostream::operator<<(char const *) /var/tmp/ccoYSFew.o
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status
hostname>
Sunfreeware.com seems to say it works for C, C++, Java and Fortran. Look:
gcc-2.95.3-sol8-sparc-local.gz compiled GNU C/C++/FORTRAN/Java compiler
package installs in /usr/local. See the libiberty link also.
So, what's problem, dudes?
3. gcc won't compile C++ but will compile C, help!
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