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Robin Mills, 22 Feb 2018 19:31


Building Exiv2 v0.26 + Python 3.6.4 + Py3Exiv2 v0.1.0 on Centos

1) Install Development Tools on CentOS

1.a) Update the system and install the development tools

https://www.digitalocean.com/community/tutorials/how-to-install-python-3-and-set-up-a-local-programming-environment-on-centos-7

sudo yum -y update
sudo yum -y install yum-utils
sudo yum -y groupinstall development

2) Build and test exiv2

2.a) Install dependent libraries:

sudo yum -y install expat-devel
sudo yum -y install zlib-devel

2.b) Install tools required for the Exiv2 test suite

sudo yum -y install subversion
sudo yum -y install dos2unix
sudo yum -y install curl

2.c) Get the code

http://www.exiv2.org/download.html

2.d) Install the code into the build tree

mkdir -p ~/gnu/exiv2
copy the source into ~/gnu/exiv2/exiv2-trunk

2.e) Build it

http://dev.exiv2.org/projects/exiv2/wiki/How_do_I_build_Exiv2_on_the_XYZ_platform

cd ~/gnu/exiv2/exiv2-trunk
./configure
make
sudo make install

2.f) Run the test suite (optional)

export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:/usr/lib/pkgconfig
svn export svn://dev.exiv2.org/svn/tags/0.26/test  # once only
make samples
make tests

3) Build and install python 3.6.4

3.a) Get the code

https://www.python.org/downloads/

3.b) Install the code into the build tree

mkdir ~/gnu/python
copy the source into ~/gnu/python/Python-3.6.4

3.c) Built and install python3.6.4

cd ~/gnu/python/Python-3.6.4
./configure
make
sudo make install

3.d) Create a link to use python3

sudo ln -s /usr/local/bin/python3.6 /usr/local/bin/python3

4) Build and install boost

4.a) Get the code from http://www.boost.org/users/download/

mkdir ~/gnu/boost
copy the source into ~/gnu/boost/boost_1_66_0

4.b) Build and install boost

cd ~/gnu/boost/boost_1_66_0

export BOOST_LIBRARYDIR=$PWD/libs
export BOOST_ROOT=$PWD
export CPLUS_INCLUDE_PATH=/usr/local/include/python3.6m
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib" 
./bootstrap.sh --with-python=/usr/local/bin/python3.6 
./b2
sudo $PWD/b2 install

5) Build and test py3exiv2

5.a) Get the code from https://pypi.python.org/pypi/py3exiv2/0.1.0

mkdir ~/gnu/py3exiv2
copy the source into ~/gnu/py3exiv2/py3exiv2-0.1.0

5.b) Build and install py3exiv2

cd ~/gnu/py3exiv2/py3exiv2-0.1.0
sudo /usr/local/bin/python3.6 setup.py install

5.c) Test py3exiv2

curl -O http://clanmills.com/Stonehenge.jpg
python3.6
import pyexiv2
image=pyexiv2.ImageMetadata(Stonehenge.jpg) # image on your computer
image.read()
image.exif_keys
.. lots and lots of lovely output .

6) To run in a clean shell

6.a) Set LD_LIBRARY_PATH

I recommend you set this in ~/.login or ~/.bashrc or ~/.profile so that its "always set"__

export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib

6.b) Run python3

python3
import pyexiv2
help(pyexiv2)
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