Debian – How to install GCC 5 on debian jessie 8.1

cdebiang++gcc

I tried many solutions to install update for my gcc compiler on debian server. None of them worked. I need the compiler update to use new features of c++11, as this provides a stable libcxx11 ABI, and stable support for C++11 (refer here). Specifically getting version `GLIBCXX_3.4.21' which is not included in my current compiler gcc version 4.9.2 (Debian 4.9.2-10).

Some pointers to solution will be helpful. Thanks in advance.

Some links to forum related to my issue which I already tried:

1
2
3 (not entirely related solution is for ubuntu, but I couldn't find gcc-5 in ftp server of debian yet)

Best Answer

I needed GCC 5+ installed on debian jessie and, as is available for debian testing (at least on jun-16) you can use apt-pinning to install packages available there (see https://wiki.debian.org/AptPreferences).

To install GCC 5+ from testing on debian jessie using apt-pinning:

Add debian testing repo to your apt sources by creating a file in the directory /etc/apt/sources.list.d containing the line

deb http://ftp.us.debian.org/debian testing main contrib non-free
Instruct debian to use testing sources on certain packages by creating a file in /etc/apt/preferences.d containing the following:
```
Package: *
Pin: release a=testing
Pin-Priority: 100
```
Update apt database: sudo apt-get update
Install gcc from testing: sudo apt-get install -t testing gcc

Note that using -t testing you tell apt-get to install gcc from testing sources as configured earlier.

I strongly suggest to clean any compilation and re-compile any dependency before compiling your sources again.

Have fun!

Related Solutions

Debian – How to install gcc 4.8.1 on debian wheezy

You could use something like this. However, it's not recommended.

If you really know what you're doing, you can try following:

Jessie (testing) now contains gcc-4.8 which is compliant with C++11 (also gcc-4.9 is available).

I used apt-pinning in the following way:

A source to jessie was added to /etc/apt/sources.list:

deb http://ftp.uk.debian.org/debian/ jessie main non-free contrib

/etc/apt/preferences was edited as such:

    Package: *
    Pin: release a=wheezy
    Pin-Priority: 900

    Package: gcc*
    Pin: release a=jessie
    Pin-Priority: 910

Then,

$ sudo aptitude update
$ sudo aptitude install gcc-4.8/jessie

$ ln -s /usr/bin/gcc-4.8 /usr/bin/gcc
$ sudo aptitude install g++-4.8/jessie
$ ln -s /usr/bin/g++-4.8 /usr/bin/g++

NOTE: Newer version of gcc might be dependend on newer libc6 which means that even if you compile your program with gcc-4.8, you won't be able to run the compiled program on other wheezy machine.

Freebsd – How to install the latest gcc on FreeBSD

You can install GCC 4.9 by building it from ports with

cd /usr/ports/lang/gcc49; make install clean

or if you have portmaster

portmaster -DHB lang/gcc49

or if you prefer packages with

pkg install lang/gcc49

If you change lang/gcc49 to lang/gcc you will install the most recent stable version of GCC currently this is GCC 4.7.

When you want to build all your ports with GCC instead of Clang you have to edit /etc/make.conf and add

.if !empty(.CURDIR:M/usr/ports/*) && exists(/usr/local/bin/gcc49)
CC=gcc49
CXX=g++49
CPP=cpp49
.endif

and edit /etc/libmap.conf and add there

libgcc_s.so.1   gcc49/libgcc_s.so.1
libgomp.so.1    gcc49/libgomp.so.1
libobjc.so.3    gcc49/libobjc.so.4
libssp.so.0     gcc49/libssp.so.0
libstdc++.so.6  gcc49/libstdc++.so.6

Here is an article from FreeBSD.org which explains this in more detail.

But you don't really need GCC for the ports, all ports that already depend on GCC will use GCC.

Edit:

And yeah g++ will be installed with all GCC ports.

Best Answer

Related Solutions

Debian – How to install gcc 4.8.1 on debian wheezy

Freebsd – How to install the latest gcc on FreeBSD

Edit:

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