Difficulties installing GCC 3.1

[newbie274088]

Hi all,

I'm trying to figure out how to install GCC 3.1 from source. I've tried several times to no avail. I'm a newbie to Linux, but I want to learn how to install apps from source. (I have read that the compiler would be the hardest thing for a newbie to install, so I wanted to figure out how.) I downloaded the full source tarball of GCC 3.1. I've read the documentation that comes with that several times (it's confusing, but I did it). So, I tried doing this:

$ mkdir gcc-build-3.1
$ cd gcc-build-3.1
$ ../gcc-3.1/configure --prefix=/home/x/Programs/gcc-3.1
$ make bootstrap
$ make prefix=/home/x/Programs/gcc-3.1 install

Now, to test out the compiler I have it compile a simple c++ program I wrote to output 'Hello.'. I type the following to compile and run the program:

$ /home/x/Programs/gcc-3.1/bin/g++ -o hello hello.cpp
$ ./hello

When I do that, I get the following:

error while loading shared libraries: libstdc++.so.4: cannot open shared object file: No such file or directory

Isn't that my standard c++ library? Why wasn't that installed? And how do I install it?

(BTW, I'm running Mandrake Linux 8.1 Standard Edition with GCC 2.96)

[mimi]

IIRC, on a regular installation of Mandrake none of these libraries are installed unless you chose them. *Open the rpm management program thingy and check to see what you can or what you have installed. *Then, if you have a cd, just install the libraries.

[newbie274088]

When I looked through the Mandrake Update in Software Manager, I discovered they had GCC3.0.1-1.1 in RPM format (with it's libraries... it installed libstdc++.so.3).

GCC 3.0.1-1.1 and GCC 3.0.4 (installed that this morning from source) both compile the app... and the app runs properly and outputs 'Hello.'. However, GCC 3.1 still complains of missing libraries.

I guess what I'm trying to ask is: what wasn't installed, why wasn't it installed, and how do I install it? I'm trying to do as much of this by source as possible because I want to learn what's going on... so if anyone could help or point me in the direction of help that a newbie can understand, I'd much appreciate it!

[Gaenya]

Try making a link from libstdc++.so.3 to libstdc++.so.4

[newbie274088]

When I went to make a link, I suddenly realized that I hadn't checked to see if libstdc++.so.4 existed... (embarresed pause)... and it did. The strange thing was, it's path was '/home/x/Programs/gcc-3.1/lib/libstdc++.so.4'. It was a link to 'libstdc++.so.4.0.0', so I made a link to that in '/usr/lib' to it, and now I can compile my c++ apps just fine (with just that user, obviously)...

So... why were my GCC libraries put under '/home/x/Programs/gcc-3.1/lib'? And why didn't GCC know that's where they were since GCC installed them there itself?

Is there any way to compile GCC in such a way that it DOES know where those libraries are?

[Gaenya]

* * *$ ../gcc-3.1/configure --prefix=/home/x/Programs/gcc-3.1
* * *$ make bootstrap
* * *$ make prefix=/home/x/Programs/gcc-3.1 install

Because of this
You make the prefix = /home/x/Programs/gcc-3.1 not /usr
so you have to edit /etc/ld.so.config and add the lib path and then run ldconfig.

[newbie274088]

Thanks! GCC 3.1 works now!

As I said, I'm a newbie...

[Gaenya]

No problem ;D