This article explains how to set up a properly functioning C/C++ development environment on Linux. The article is aimed at developers interested in contributing to the Drizzle server project, but the vast majority of the content applies equally well to developers wishing to contribute to the MySQL server or any other open source project written in C/C++
IMPORTANT: This article doesn’t get into any religious battles over IDEs or particular editors. IDEs and editors are what you use to edit code. What this article covers is the surrounding libraries, toolchain, and dependencies needed to get into the development or contirbution process. That said, go Vim.
The examples shown use the Debian/Ubuntu methods of obtaining code packages and installing them — specifically, using apt-get install to install packages. If you are running on a RPM-based distro, simply change the commands to use your package manager of preference, for instance yum install. Solaris users should get as far as they can in the installation/setup process and hop over to the Freenode #drizzle channel for help from one of Solaris experts. The Drizzle wiki has more information on specific packages needed for different distributions.
OK, let’s get started, shall we?
Installing Bazaar and Some Bzr Goodies
So, what is this Bazaar thing and why do you need it? Good question! Bazaar is the revision control system that the Drizzle development team (as well as the MySQL engineering team) uses for source code control. The good folks over at Canonical maintain and enhance the excellent Bazaar-NG system and have an online platform called Launchpad.net which is tightly integrated with Bazaar. Launchpad.net is kind of like SourceForge.net, only focused around Bazaar as the revision control system, and includes a number of nifty little features that make it easier to manage and maintain teams of developers working on the code base. The Drizzle Server project is hosted on Launchpad.net at http://launchpad.net/drizzle.
To install Bazaar, issue the following:
sudo apt-get install bzr
Some Optional Goodies
Once installed, you might want to install a few more things that will make your bzr life easier. The bzrtools package is a collection of command-line and graphical utilities for bzr. meld is a graphical merge conflict resolution utility that I have found invaluable at times. PoEdit is an easy way to work with the GetText translation utilities. To install these tools, do:
sudo apt-get install bzrtools meld poedit
OK, that’s it for Bazaar for now. Let’s move on to getting your development toolchain installed.
The Required Toolchain Packages and Library Dependencies
In order to compile the Drizzle server, you will need a working GNU Toolchain with the C++ development tools.
The Easy Way
The best and most consistent way to get these build dependencies if you are working on Debian/Ubuntu, is to add the Drizzle Developers Personal Package Archive to your apt path and install the Drizzle dependencies.
This way to do this via the terminal:
# For Ubuntu >= 9.10 (Karmic): sudo add-apt-repository ppa:drizzle-developers/ppa sudo apt-get update sudo apt-get install drizzle-dev
For versions of Ubuntu prior to 9.10, simply head over to the Drizzle Developers PPA and follow the instructions on that page.
The Hard Way
The following packages are required for building Drizzle.
- binutils (includes ld and as)
- gcc/g++ (4.2+)
- autoconf (2.59+)
- automake (1.10+)
- libtool (1.5.24+)
- m4 (1.4.8+)
- bison/yacc (2.3)
- pkg-config (0.22+)
To install the above toolchain, do the following:
sudo apt-get install libc-dev gcc g++ bison binutils automake autoconf m4 pkg-config libtool
Once apt-get finishes installing the above, you’ll have a system capable of compiling C/C++ programs, for the most part. The Drizzle server needs some additional libraries and header files in order to compile. I list them here along with a brief description of the library or file.
- libpcre3 – A standard PCRE regular expression library
- libpam0g – A pluggable authentication modules library (a horrible package name, no?…)
- libncurses – A library for displays of terminal applications (used by the drizzle client)
- libprotobuf – Google Proto Buffers library, used by the server in message communication
- gettext – i10n and l10n services
- libevent – socket event handling
- libz – compression
- libreadline – Command-line editing utilities
- uuid-dev – UUID headers
- libboost-dev – BOOST C++ headers and library
- libboost-program-options-dev – BOOST program_options library headers
- libdrizzle-dev – libdrizzle headers
- gperf – GNU hash function generator
- libgcrypt11-dev – GNU Crypto library
The following command should install the required libraries with the exception of Google Proto Buffers, which is described in the following section.
sudo apt-get install libpcre3-dev libpam0g libncurses5-dev libpam0g-dev gettext libevent-dev libz-dev libreadline-dev uuid-dev libgcrypt11-dev libboost-dev libboost-program-options-dev libdrizzle-dev gperf
Installing Google Proto Buffers
After installing the libraries and toolchain, you’ll need to install the Google Proto Buffers library. Again, the easiest way to do so is via the Drizzle Developers PPA, which you should have added to your repositories above. If you did, simply do:
sudo apt-get install libprotobuf-dev protobuf-compiler
Setting Up a Local Bazaar Repository for Drizzle
Now that you’ve installed all the required toolchain and dependencies, it’s time to use Bazaar to pull the development branch of Drizzle and compile the Drizzle server. The first step to do is to set up that local bzr repository. Myself, I have all my bzr repositories in a directory called ~/repos, and that is what the below examples show, but you are of course welcome to put your repos wherever you prefer. To set up a directory and a drizzle repo under your home directory, do the following:
cd ~ mkdir repos cd repos bzr init-repo drizzle cd drizzle
At this point, you have a local bzr repository. Let’s now create a local branch of the development source code trunk that we can play with. To do so, we use the bzr branch command, like so:
bzr branch lp:drizzle trunk
This tells bzr to go grab the main development branch of the “drizzle” project that resides on the Launchpad.net servers (thus, the lp: prefix), and create a local branch called “trunk”. The branch operation may take a little while to complete when you do it for the first time. Subsequent branch and merge operations are much, much quicker than the first branch into a repository. When the branch succeeds, go ahead and look at the files that have been downloaded into your “trunk” branch:
cd trunk ls -la
You should see something like the following:
jpipes@serialcoder:~/repos/drizzle/trunk$ ls -la total 264 drwxr-xr-x 13 jpipes jpipes 4096 2010-02-25 12:39 . drwxr-xr-x 16 jpipes jpipes 4096 2010-03-10 19:44 .. -rw-r--r-- 1 jpipes jpipes 76502 2010-02-24 23:30 ABOUT-NLS -rw-r--r-- 1 jpipes jpipes 377 2010-02-24 23:30 AUTHORS drwxr-xr-x 5 jpipes jpipes 4096 2010-02-24 23:30 .bzr -rw-r--r-- 1 jpipes jpipes 5983 2010-02-25 12:39 .bzrignore drwxr-xr-x 2 jpipes jpipes 4096 2010-03-10 15:27 client drwxr-xr-x 2 jpipes jpipes 4096 2010-02-24 23:30 config -rw-r--r-- 1 jpipes jpipes 5350 2010-02-24 23:30 configure.ac -rw-r--r-- 1 jpipes jpipes 19071 2010-02-24 23:30 COPYING -rw-r--r-- 1 jpipes jpipes 56574 2010-02-24 23:30 Doxyfile drwxr-xr-x 16 jpipes jpipes 12288 2010-03-10 15:27 drizzled -rw-r--r-- 1 jpipes jpipes 5962 2010-02-24 23:30 DRIZZLE.FAQ -rw-r--r-- 1 jpipes jpipes 5139 2010-02-24 23:30 EXCEPTIONS-CLIENT drwxr-xr-x 2 jpipes jpipes 4096 2010-02-24 23:30 extra drwxr-xr-x 2 jpipes jpipes 4096 2010-02-24 23:30 gnulib drwxr-xr-x 2 jpipes jpipes 4096 2010-02-24 23:30 m4 -rw-r--r-- 1 jpipes jpipes 4545 2010-02-24 23:30 Makefile.am -rw-r--r-- 1 jpipes jpipes 41 2010-02-24 23:30 NEWS drwxr-xr-x 55 jpipes jpipes 4096 2010-03-05 13:11 plugin drwxr-xr-x 2 jpipes jpipes 4096 2010-02-24 23:30 po -rw-r--r-- 1 jpipes jpipes 821 2010-02-24 23:30 README drwxr-xr-x 3 jpipes jpipes 4096 2010-02-24 23:30 support-files drwxr-xr-x 8 jpipes jpipes 4096 2010-03-10 15:27 tests
OK, you are now ready to compile the server and client tools contained in your branch. The way to do so is the following:
./config/autorun.sh ./configure --with-debug make make test
If all goes well, drizzle will compile and build, get installed, and output the (hopefully!) passing test results. The output at the end should be similar to the following:
... collation_dictionary.slap [ pass ] 54 blackhole.blackhole [ pass ] 13 archive.archive [ pass ] 509 archive.archive_aio_posix [ pass ] 487 archive.archive_basic [ pass ] 2 archive.archive_discover [ pass ] 2 ------------------------------------------------------- Stopping All Servers All 290 tests were successful. The servers were restarted 36 times Spent 206.430 of 290 seconds executing testcases
And that’s it.
OK, so that’s it for this first article. I hope you’ve found it helpful in getting a development environment set up so that you can feel comfortable contributing to the Drizzle project. Join me on Freenode’s #drizzle IRC channel to get some help. We’re always available.