To use recent versions of compilers such as gcc 11 on centos stream, install the gcc toolsets, eg gcc-toolset-11 which is in the AppStream repos.

Answer from jiopaley on Stack Overflow
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Ahelpme
ahelpme.com › home › linux › centos 7 › how to install new gcc and development tools under centos 7
How to install new gcc and development tools under CentOS 7 | Any IT here? Help Me!
September 5, 2019 - [srv@local ~]# yum install ...=================== Installing: devtoolset-7-gcc x86_64 7.3.1-5.4.el7 centos-sclo-rh 29 M devtoolset-7-gcc-c++ x86_64 7.3.1-5.4.el7 centos-sclo-rh 11 M devtoolset-7-gcc-gdb-plugin x86_64 7.3.1-5.4.el7 centos-sclo-rh 123 k devtoolset-7-gcc-gfortran ...
Discussions

yum -y install devtoolset-11-* failing with `No package devtoolset-11-* available.`
Hello @nealef, It seems that devtoolset-11 has not been rebuild yet for clefos 7. Is this planned and if so, do you have an ETA on this ? This has been found when investigating pypa/manylinux#1266 CentOS 7 sources are available for devto... More on github.com
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January 29, 2022
g++ - How can I install devtoolset on the workstation edition of RHEL7 - Stack Overflow
I would like to know how to install devtoolset on RHEL7 workstation. I found instructions for RHEL7 server which I have failed to adjust correctly for the workstation edition. I also found instruc... More on stackoverflow.com
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Newest 'devtoolset' Questions - Stack Overflow
I'd like to use devtoolset-11 on Centos Stream 8, but can't find any information on whether the Software Collection repositories are available for Centos Stream. The usual dnf install centos-release-... ... I am using Centos 7 with kernel 3.10.0 My current gcc version is 4.8.5 and I am trying ... More on stackoverflow.com
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mayeut/devtoolset-11 - Fedora Discussion
Description devtoolset-11 rebuild for centos 7 i686 Installation Instructions yum install devtoolset-11-binutils devtoolset-11-gcc [...] Active Releases The following unofficial repositories are provided as-is by owner of this project. Contact the owner directly for bugs or issues (IE: not ... More on discussion.fedoraproject.org
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January 29, 2022
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GitHub
github.com › nealef › clefos › issues › 9
yum -y install devtoolset-11-* failing with `No package devtoolset-11-* available.` · Issue #9 · nealef/clefos
January 29, 2022 - This has been found when investigating pypa/manylinux#1266 CentOS 7 sources are available for devtoolset-11: https://vault.centos.org/centos/7/sclo/Source/rh/ The CentOS 7 x86_64 image is able to run the same commands as below successfully. ... docker pull s390x/clefos:7 docker run -it --rm s390x/clefos:7 echo "multilib_policy=best" >> /etc/yum.conf echo "skip_missing_names_on_install=False" >> /etc/yum.conf sed -i '/^override_install_langs=/d' /etc/yum.conf yum -y update yum -y install yum-utils curl yum-config-manager --enable extras yum -y install centos-release-scl-rh yum -y install devtoolset-11-binutils devtoolset-11-gcc devtoolset-11-gcc-c++ devtoolset-11-gcc-gfortran
Author   nealef
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Centos
cbs.centos.org › koji › buildinfo
devtoolset-11-gcc-11.2.1-1.1.el7 | Build Info | CentOS Community Build Service
October 19, 2021 - Main Site Links: · Summary · Packages · Builds · Tasks · Build Targets · Users · Hosts · Reports · Search
Top answer
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This issue in this case is RedHat subscription channels. Though the subscription and software are free (provided you have an active subscription already), for some reason you have to make a 'special request' to RedHat as per:

https://access.redhat.com/solutions/472793

You can automate this by visiting:

https://www.redhat.com/wapps/try/RHSCL

(when logged into the support portal). This should automatically be approved after which you can attach a new subscription. Identify the pool id using:

subscription-manager list --available --all

To find the pool id:

 Subscription Name:   Software Collections and Developer Toolset
 Provides:            Red Hat Developer Tools (for RHEL Server)
                      Red Hat Developer Tools Beta (for RHEL Workstation)
                      Red Hat Software Collections Beta (for RHEL Server)
                      Red Hat Software Collections Beta (for RHEL Workstation)
                      Red Hat Software Collections (for RHEL Server)
                      Red Hat Developer Tools Beta (for RHEL Server)
                      Red Hat Developer Toolset (for RHEL Workstation)
                      Red Hat Software Collections Beta (for RHEL Client)
                      Red Hat Software Collections (for RHEL Workstation)
                      Red Hat Developer Toolset (for RHEL Server)
                      Red Hat Developer Tools (for RHEL Workstation)
                      Red Hat Software Collections (for RHEL Client) 
SKU:                 foobar 
Contract:            1234 Pool ID: XXXXXXXXXX

Then attach this and enable the newly available repos:

>subscription-manager attach --pool=XXXXXXXXXXXXXXXXXXXX
Successfully attached a subscription for: Software Collections and Developer Toolset
>subscription-manager repos --enable rhel-workstation-rhscl-7-rpms
Repository 'rhel-workstation-rhscl-7-rpms' is enabled for this system.
>subscription-manager repos --enable rhel-7-workstation-devtools-rpms
Repository 'rhel-7-workstation-devtools-rpms' is enabled for this system.

You can now install freely:

>yum update -y 
>yum install -y devtoolset-7-gcc-c++

Quite why they make you jump through so many hoops is explained by RedHat as follows:

-If you have a 2013 RHEL SKU with Standard or Premium service level, there should be no action on your part, and your subscription should have full access to RHSCL.

-If you have a 2010 or older RHEL SKU with Standard or Premium service level, you should contact Red Hat Customer Service to request the RHSCL SKU (and all related content) added to your account.

NOTE: Developer Toolset is now included as part of Red Hat Software Collections. This change was made on May 29, 2014.

As you had Red Hat Enterprise Linux Workstation, Standard subscription which is older RHEL SKU with Standard service level, you had to initiate a special request for it

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Red Hat
access.redhat.com › documentation › en-us › red_hat_developer_toolset › 11 › html-single › user_guide › index
User Guide | Red Hat Developer Toolset | 11 | Red Hat Documentation
July 19, 2023 - This means that some new C++17 features, such as std::pmr::string, are not available on Red Hat Enterprise Linux 7, even when using the Red Hat Developer Toolset compiler. In Red Hat Developer Toolset, the GNU Fortran compiler is provided by the devtoolset-11-gcc-gfortran package and is automatically installed with devtoolset-11-toolchain as described in Section 1.5, “Installing Red Hat Developer Toolset”.
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Stack Overflow
stackoverflow.com › questions › tagged › devtoolset
Newest 'devtoolset' Questions - Stack Overflow
We use devtoolset-10 in CentOS 7 ("Actual" default version of gcc in OS is 4.8.5, but in devtoolset we use 10.2.1 version, which is real actual version for project). Command gcc --version ... ... I have installed the devtoolset-10 package on CentOS 7 and run the /opt/rh/devtoolset-10/enable script so that now when I do this: g++ --version I get this: g++ (GCC) 10.2.1 20210130 (Red Hat 10.2.1-...
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Fedora Discussion
discussion.fedoraproject.org › team workflows › projects in copr
mayeut/devtoolset-11 - Fedora Discussion
January 29, 2022 - Description devtoolset-11 rebuild for centos 7 i686 Installation Instructions yum install devtoolset-11-binutils devtoolset-11-gcc [...] Active Releases The following unofficial repositories are provided as-is by owner of this project.
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Red Hat
docs.redhat.com › en › documentation › red_hat_developer_toolset › 11 › html › user_guide › chap-red_hat_developer_toolset
Chapter 1. Red Hat Developer Toolset | User Guide | Red Hat Developer Toolset | 11 | Red Hat Documentation
Replace package_name with a space-separated list of packages that you want to install. For example, to install the devtoolset-11-gdb-gdbserver and devtoolset-11-gdb-doc packages:
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Rocky Linux Forum
forums.rockylinux.org › rocky linux help & support
Install devtoolset-7 on Rocky - Rocky Linux Help & Support - Rocky Linux Forum
January 13, 2022 - I recently changed from CentOS 7 (GCC version 7.3.1.) to Rocky 8.5 (GCC version 8.5.0). When I compile C++ code with GCC on Rocky and want to execute it on another system with CentOS 7 I get the following errors: ./prog…
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Centmin Mod
community.centminmod.com › threads › devtoolset-11-gcc-11-2-1.22340
Devtoolset-11 (GCC-11.2.1) | Centmin Mod Community Support Forums
June 8, 2022 - Discussion in 'CentOS, Redhat & Oracle Linux News' started by happyhacking, Jan 4, 2022. Tags: devtoolset-11 gcc-11 · Previous Thread Next Thread · Loading... Page 1 of 2 · Previous Thread Next Thread · Loading... (You must log in or sign up to reply here.) Show Ignored Content · Page 1 of 2 · Donate · Donate · Centmin Mod Nginx auto installer installs Nginx (ngx_pagespeed + SPDY), PHP-FPM & MariaDB on CentOS.
Top answer
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16

I've confirmed that you can upgrade gcc from the default version 4.8 on centOS 7.

First, we need to install "Software Collections" in order to access some of the community packages including gcc v7

  • sudo yum install -y centos-release-scl

Next, we want to install a developer toolset. Depending on your needs, you may want a different devtoolset. Here I'm targeting 7:

  • sudo yum install -y devtoolset-7

Finally, you'll want to change over to gcc 7 as your default, launch a new shell session with the scl tool:

  • scl enable devtoolset-7 bash
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Enable the software collection in the answer is only effective in the current shell. The scl utility will create a "child-shell" that set the PATH variables properly, so that in the new child-shell, the enabled software collections will be firstly searched. These settings obviously only take effective temporarily in the current shell.

To make it permanently effective, add the command, source /opt/rh/devtoolset-7/enable to the user's profile (~/.bash_profile or ~/.bashrc for RHEL based OS, like CentOS 7). Then, start a new shell and you will have the right tools available.

After execute scl enable devtoolset-7 bash, you will need to execute exit twice to exit the opened shell window, which verifies that the scl command created a new shell instance as a child process. There might be side-effect with creating a child-shell, so do not put this command in the ~/.bashrc profile, otherwise it will repeatedly create child-shell (non-login shell) as each shell will load the profile, resulting in a endless recursive loop. Put it in ~/.bash_profile, it will be loaded for only once (for the login shell), but you will need to exit twice every time.

But for development purpose, scl enable devtoolset-7 bash would be preferred, as you can exit the created child-shell, and then switch between different versions of the same software.


More details about the GCC version in python terminal:

The version info of the built-in Python in CentOS 7:

[root@conda condabuilder]# python
Python 2.7.5 (default, Nov 16 2020, 22:23:17) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

The version info of the user installed (via conda) Python on a system even without higher version of GCC installed:

[root@conda condabuilder]# conda activate jupyter
(jupyter) [root@conda condabuilder]# python -VV
Python 3.10.9 | packaged by conda-forge | (main, Feb  2 2023, 20:20:04) [GCC 11.3.0]

From the results, we can see that the GCC version contained in Python's version info is not related to the system's GCC. The system's default Python (2.7.5) should have been compiled with the GCC version distributed with CentOS 7, so the version info show the same GCC version. But for user installed python, the GCC version info actually depends on what version of GCC is used for building and packging the python binary.

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Posit Support
support.posit.co › hc › en-us › articles › 360006145413-Posit-Workbench-with-devtoolset-enabled
Posit Workbench with devtoolset enabled – Posit Support
January 24, 2025 - cc1plus: error: unrecognized command line option "-std=c++11" or · fatal error: codecvt: No such file or directory · For example, on CentOS 7: yum install centos-release-scl · yum install devtoolset-9 · Execute: gcc --version · Enable ...
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GitHub
github.com › pypa › manylinux › issues › 1266
devtoolset-11 for manylinux_2014 · Issue #1266 · pypa/manylinux
January 27, 2022 - Last year we had the upgrade to devtoolset-10 for manylinux_2014 see #1141 and #1155. Now the devtoolset-11 is also released for CentOS 7. See below: https://centos.pkgs.org/7/centos-sclo-rh-x86_64/devtoolset-11-toolchain-11.0-3.el7.x86_...
Author   pypa
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Stack Overflow
stackoverflow.com › questions › tagged › devtoolset
Recently Active 'devtoolset' Questions - Stack Overflow
To install devtoolset-7.x86_64 on CentOS6 is pretty easy: yum install -y centos-release-scl yum install -y devtoolset-7-toolchain However, i686 is not available for download: http://mirror.centos.org/... ... When attempting to generate a large ...
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Red Hat
access.redhat.com › solutions › 6994231
How to install the package "devtoolset-11-gcc-c++" ? - Red Hat Customer Portal
How to install the package "devtoolset-11-gcc-c++" ? Red Hat Enterprise Linux 7 · A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more. Log in for full access Log In · Learn more about Red Hat subscriptions · How to access this content ·