centos_6_5_env.md

Setting Up a CentOS 6.5 Build Environment

Bruce is implemented in C++, and makes extensive use of C++11 features. Therefore, it must be built using a more recent version of gcc than what CentOS 6.5 provides. Likewise, a newer version of Python is required to support Bruce's SCons-based Python build scripts. Some RPM packages are also needed, which may be installed as follows:

yum groupinstall "Development tools"
yum install scons
yum install cmake
yum install snappy-devel
yum install boost-devel

Building and Installing gcc 4.8.2

For simplicity, the following instructions assume that you are running on an x86-64 architecture Linux installation. To build and install gcc 4.8.2, do the following:

1. First install 32-bit versions of the glibc binaries (in addition to the existing 64-bit binaries). To do this, start by appending the following line to /etc/yum.conf:

   multilib_policy=all
   

   Now install the packages shown below. This will cause 32-bit versions to be installed in addition to the 64-bit versions that are already installed.

   yum install glibc
   yum install glibc-devel
   yum install glibc-static
   

   Finally, remove the line you appended to /etc/yum.conf above.

2. Next execute the following commands:

   yum install elfutils-devel
   yum install systemtap-runtime
   yum install zlib-devel
   yum install gettext
   yum install dejagnu
   yum install bison
   yum install flex
   yum install texinfo
   yum install sharutils
   yum install gmp-devel
   yum install mpfr-devel
   wget http://dl.fedoraproject.org/pub/epel/6/x86_64/libmpc-0.8-3.el6.x86_64.rpm
   wget http://dl.fedoraproject.org/pub/epel/6/x86_64/libmpc-devel-0.8-3.el6.x86_64.rpm
   rpm -Uvh libmpc-0.8-3.el6.x86_64.rpm
   rpm -Uvh libmpc-devel-0.8-3.el6.x86_64.rpm
   yum install rpm-build
   mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}  # or use a directory of your choice
   git clone https://github.com/ifwe/bruce.git
   cp bruce/centos6/gcc482.spec ~/rpmbuild/SPECS
   wget http://mirrors.kernel.org/gnu/gcc/gcc-4.8.2/gcc-4.8.2.tar.bz2
   cp gcc-4.8.2.tar.bz2 ~/rpmbuild/SOURCES
   cd ~/rpmbuild
   rpmbuild --define "topdir `pwd`" -ba SPECS/gcc482.spec
   rpm -Uvh RPMS/x86_64/gcc482-4.8.2-1.el6.x86_64.rpm
   

Now that gcc 4.8.2 has been built and installed, you should do the following before attempting to build and execute programs with the new compiler version:

export PATH=/opt/gcc/bin:$PATH
export LD_LIBRARY_PATH=/opt/gcc/lib64

Building and Installing Python 2.7

To build and install Python 2.7.3, do the following:

yum install zlib-devel
yum install bzip2-devel
yum install openssl-devel
yum install ncurses-devel
yum install sqlite-devel
yum install readline-devel
yum install tk-devel
wget http://python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2
tar xf Python-2.7.3.tar.bz2
cd Python-2.7.3
./configure --prefix=/usr/local
make
make altinstall  # Warning: Do _not_ type "make install".
cd ..
wget http://pypi.python.org/packages/source/d/distribute/distribute-0.6.35.tar.gz
tar xf distribute-0.6.35.tar.gz
cd distribute-0.6.35
python2.7 setup.py install
easy_install-2.7 virtualenv
easy_install-2.7 argparse

Using Python 2.7 inside a virtualenv Environment

For building Bruce, you need to create a Python 2.7 virtualenv environment, which may be done as follows:

virtualenv-2.7 --distribute ~/bruce_env  # or use a directory of your choice

Now activate the virtualenv environment as follows:

$ source ~/bruce_env/bin/activate
$ python --version
Python 2.7.3
$

As shown above, when executing commands in the shell where you activated the virtualenv environment, Python 2.7.3 will be used by default. Before building Bruce, you must perform this step in the shell where you are doing the build.

Now proceed to build, install, and configure Bruce.

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centos_6_5_env.md: Copyright 2014 if(we), Inc.

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