gnat-3_10p1-nt and C++ ?

gnat-3_10p1-nt and C++ ?

[Phil Brereton]

I have just installed gnat and found out that it can compile C, I've
been told that to compile C++ I need cc1plus.exe and the C++ library.
How do I install these correctly? Any advice will be gratefully
received.
Best wishes for the New Year,
Phil

Re: gnat-3_10p1-nt and C++ ?

[R. Karl Werner]

If anyone can help I need the same info.  I'm using PCGRASP and would like
to have the C++ capability.

Karl

Phil Brereton wrote in message <34a9aa01.38963143@news.u-net.com>...
>I have just installed gnat and found out that it can compile C, I've
>been told that to compile C++ I need cc1plus.exe and the C++ library.
>How do I install these correctly? Any advice will be gratefully
>received.
>Best wishes for the New Year,
>Phil

Re: gnat-3_10p1-nt and C++ ?

[Robert Dewar]

Phil Brereton wrote in message <34a9aa01.38963143@news.u-net.com>...
>I have just installed gnat and found out that it can compile C, I've
>been told that to compile C++ I need cc1plus.exe and the C++ library.
>How do I install these correctly? Any advice will be gratefully
>received.
>Best wishes for the New Year,
>Phil


Just so the picture is clear, GNAT cannot compile C, it is an Ada 95
compiler! However, it is part of the GCC system, which is a multi-language
compiler. The standard distribution of GCC made with GNAT includes the
C compiler, but does not include the C++ compiler, which must be separately
obtained. The easiest thing is to obtain g++ separately and install it as
a completely separate program, but if you know what you are doing, you can
merge the two distribtions together to form a single unified gcc that
can compile C, Ada 95 and C++ (as well as Chill, Fortran 77 etc etc if
you install these as well).

Re: gnat-3_10p1-nt and C++ ?

[Phil Brereton]

dewar@merv.cs.nyu.edu (Robert Dewar) wrote:
>
>Just so the picture is clear, GNAT cannot compile C, it is an Ada 95
>compiler! However, it is part of the GCC system, which is a multi-language
>compiler. The standard distribution of GCC made with GNAT includes the
>C compiler, but does not include the C++ compiler, which must be separately
>obtained. The easiest thing is to obtain g++ separately and install it as
>a completely separate program, but if you know what you are doing, you can
>merge the two distribtions together to form a single unified gcc that
>can compile C, Ada 95 and C++ (as well as Chill, Fortran 77 etc etc if
>you install these as well).
>
Thanks for the clarification - I've installed the C++ compiler and
library, the compiler seems to work ok, but the linker keeps giving
"undefined reference to 'cout' " messages.  I think I'll take your
advice and try a separate program!
Phil

Re: gnat-3_10p1-nt and C++ ?

[Jerry van Dijk]

In article <34acddaf.6456942@news.u-net.com> elwood@osc.u-net.com writes:

>Thanks for the clarification - I've installed the C++ compiler and
>library, the compiler seems to work ok, but the linker keeps giving
>"undefined reference to 'cout' " messages.  I think I'll take your
>advice and try a separate program!

If you installed the compiler according to the instructions on my
homepage this should work, as I used this installation to compile some
c++ code which I wanted to use from Ada.

Of course you did not forget to link in the standard (-lstdc++) or gcc
(lg++) libraries when compiling c++ code :-) If you want to use the c++
compiler, you are supposed to know how to use it!

--

-- Jerry van Dijk | Leiden, Holland
-- Consultant     | Team Ada
-- Ordina Finance | jdijk@acm.org

Re: gnat-3_10p1-nt and C++ ?

[Phil Brereton]

On Sat, 03 Jan 98 06:10:45 GMT, jerry@jvdsys.nextjk.stuyts.nl (Jerry
van Dijk) wrote:

>In article <34acddaf.6456942@news.u-net.com> elwood@osc.u-net.com writes:
>
>>Thanks for the clarification - I've installed the C++ compiler and
>>library, the compiler seems to work ok, but the linker keeps giving
>>"undefined reference to 'cout' " messages.  I think I'll take your
>>advice and try a separate program!
>
>If you installed the compiler according to the instructions on my
>homepage this should work, as I used this installation to compile some
>c++ code which I wanted to use from Ada.
>
>Of course you did not forget to link in the standard (-lstdc++) or gcc
>(lg++) libraries when compiling c++ code :-) If you want to use the c++
>compiler, you are supposed to know how to use it!
>
Ok, I admit my ignorance - thanks to your helpful instructions I've
now got everything working.  (C++ was not my main interest but reading
that it could be incorporated into Gnat, I thought it would be good to
add the capability.)  Thanks again,
Phil

Re: gnat-3_10p1-nt and C++ ?

[Jerry van Dijk]

In article <68dlab$sci$1@faatcrl.faa.gov> rkwerner@cybercomm.net writes:
>
>If anyone can help I need the same info.  I'm using PCGRASP and would like
>to have the C++ capability.
>
>>I have just installed gnat and found out that it can compile C, I've
>>been told that to compile C++ I need cc1plus.exe and the C++ library.
>>How do I install these correctly? Any advice will be gratefully
>>received.

I've added some notes on how I did this to my homepage at

   http://stad.dsl.nl/~jvandyk

And, of course, a very good, healthy and successful Ada 1998!

--

-- Jerry van Dijk | Leiden, Holland
-- Consultant     | Team Ada
-- Ordina Finance | jdijk@acm.org