Install protobuf 2.5 on Ubuntu

Check which version you have

You can use synaptic package manager for finding it

If you want to install manually

Copy paste in some script below commands

sudo apt-get install build-essential
mkdir /tmp/protobuf_install
cd /tmp/protobuf_install
wget https://github.com/protocolbuffers/protobuf/releases/download/v2.5.0/protobuf-2.5.0.tar.gz
tar xzvf protobuf-2.5.0.tar.gz
cd  protobuf-2.5.0
./configure
make
make check
sudo make install
sudo ldconfig
protoc --version 




Check the installed version

$ protoc --version
libprotoc 2.5.0




Why we need ldconfig read link below

http://code.google.com/p/protobuf/issues/detail?id=213 

Related error searches

[DEBUG] protoc: error while loading shared libraries: libprotoc.so.8:

protoc: error while loading shared libraries: 

[DEBUG]  libprotobuf.so.6: cannot open shared 

object file: No such file or directory

Cannot find `protoc` command 

If you came to this page with above error search then please do

sudo ldconfig

The details are present on link above