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readme: add documentation for using gcc 7/clang 5 #495

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readme: add documentation for using gcc 7/clang 5 #495

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18 changes: 18 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,24 @@ $ wget http://cbs.centos.org/kojifiles/packages/jemalloc/3.6.0/8.el7.centos/x86_
$ wget http://cbs.centos.org/kojifiles/packages/jemalloc/3.6.0/8.el7.centos/x86_64/jemalloc-3.6.0-8.el7.centos.x86_64.rpm
$ sudo rpm -i jemalloc-devel-3.6.0-8.el7.centos.x86_64.rpm jemalloc-3.6.0-8.el7.centos.x86_64.rpm
```
You can install gcc 7 and clang 5 on CentOS with:

```
$ sudo su
# cd /etc/pki/rpm-gpg
# wget -O RPM-GPG-KEY-redhat-devel https://www.redhat.com/security/data/a5787476.txt
# rpm --import RPM-GPG-KEY-redhat-devel

# yum install devtoolset-7 llvm-toolset-7
# yum install llvm-toolset-7-clang-analyzer llvm-toolset-7-clang-tools-extra # optional
# exit

$ scl enable devtoolset-7 llvm-toolset-7 bash

$ # Optionally permanently enable GCC 7 / Clang 5
$ echo "source scl_source enable devtoolset-7 llvm-toolset-7" >> ~/.bashrc
```
For more information you can see [developers.redhat.com](https://developers.redhat.com/blog/2018/07/07/yum-install-gcc7-clang)

## Build DPDK

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