Problem with gcc

**jayee_spicyguy** · 10-20-2008

Hello all,

when I tried to compile cpp program in linux my gcc compiler is showing following error

>g++ 1.cpp //after running this iam getting following messages

*g++
*pentium-builders
*Try apt-get install <selected package>
make sure you have the 'universe' component enabled
bash: g++ command not found

what exactly this mean
I also tried to install new gcc version 4.3.0. After untaring that package I went through the instalation directory. According to confoguration maual I am supposed to follow the following steps.

%mkdir objdir
%cd objdir
% ./srcdir/configure [options] [target]

If I enterd the following command

% ./configure --enable-cpp ./final/gcc_cpp

I am getting following errors/warnings

*Warning Should use --build --host -- target
*Warning Invalid host type ./final/gcc_cpp
Invalid configaration ./final/gcc_cpp

I didn't undersatand what i did wrong there? Can any one please help me out from this

All I want is to run Cpp programs on my Dell(i686) Computer and iam using Ubuntu Linux

The GCC version Iam tring to install is 4.3.0

Please help me

Thanks

**CornedBee** · 10-20-2008

Install gcc through apt-get. Don't try to install gcc manually - it can't work, because you need an existing C compiler, and you don't have one.

**jayee_spicyguy** · 10-21-2008

Originally Posted by CornedBee

Install gcc through apt-get. Don't try to install gcc manually - it can't work, because you need an existing C compiler, and you don't have one.

[quick one]I am able to run C programs succesfully in gcc, that means I have C compiler is it is true? Is there any way to update my exixsting GCC so that it can compile both C and C++
please advise.

Thanks [/quick one]

**matsp** · 10-21-2008

gcc is the C compiler, g++ is the C++ compiler. In fact, it only matters when it comes to the final linking stage, where C++ code needs to use g++ - you can link C code with g++ too, but it may drag in a few extra bits that you didn't want/need. Otherwise, if you give gcc something that it thinks is C++, it will "do the right thing".

--
Mats

**jayee_spicyguy** · 10-21-2008

Originally Posted by matsp

gcc is the C compiler, g++ is the C++ compiler. In fact, it only matters when it comes to the final linking stage, where C++ code needs to use g++ - you can link C code with g++ too, but it may drag in a few extra bits that you didn't want/need. Otherwise, if you give gcc something that it thinks is C++, it will "do the right thing".

--
Mats

[Question]Thanks for for you advise but I didn't understand why I am getting error when I tried to compile following file ?

>>g++ 1.cpp
g++ command is not found

Please advise
Thanks

[/question]

**matsp** · 10-21-2008

You do not have a path to g++ - does gcc work?

Edit: Just typing "gcc" should give you "no input files" or something like that.

--
Mats

**jayee_spicyguy** · 10-21-2008

Originally Posted by matsp

You do not have a path to g++ - does gcc work?

Edit: Just typing "gcc" should give you "no input files" or something like that.

--
Mats

Code:

 
I wonder my gcc is also not working 
 I just realised that when I entered following code 


#include <stdio.h>
int main()
{
printf("hello");
}


I am getting stdio is not found and a warning stating my pintf declaration is wrong 

That means I don't have C compiler installed is that is true? Now what I have to do Please advise 

Thanks

**matsp** · 10-21-2008

If gcc works in the sense that it's not saying "gcc not found", then you have gcc - not sure how you end up with gcc but no g++ - perhaps they are in separate packages [I usually install a bunch of compiler stuff when I install a new Linux, and I can't quite remember what goes in which package]. The lack of stdio.h indicates that some other essential component. Not sure what package that comes as either...

--
Mats

**CornedBee** · 10-21-2008

glibc-dev, most likely.

Anyway, what happens when you type
apt-get install gcc
?

Also, are you clear about the difference between compiling and running a C program?

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