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The Viriatum Web Server is simple and lightweight web server aimed at providing a simple yet powerful solution for static file serving, reverse proxy serving and dynamic language handling.

The current implementation support both x86/x64 and ARM architectures.

Building¶

Automium¶

Building viriatum using automium is quite simple even for complex builds like cross compilation. Just use the appropriate 'build.json' located under 'scripts/build' and under such directory execute:

atm

For production purposes one should use the proper optimization flags:

atm --cflags=-O3

For cross compilation (eg: arm-rasp-linux) use the following command:

atm --cflags=-O3 --cross=arm-rasp-linux-gnueabi

If you want to know more about cross compilation please refer to the Cross Compilation document.

Source Control Repository¶

If you're going to build viriatum using the git repository you first need to generate the configure files using autoconf.

./autogen.sh

Unix¶

For building under unix simple instructions are used:

./configure
make && make install

In order to provide a correct (system wide) configuration path use:

./configure --sysconfdir=/etc

In order to get the most performance out of viriatum set the CFLAGS variable for optimization:

CFLAGS="-O3" ./configure

Unix 32bit from 64bit¶

apt-get libc6-dev-i386
export CC="cc -m32"
./configure
make && make install

Android¶

Building viriatum for android involves cross compilation and the android ndk toolkit must be used.

Check the instructions for downloading the android ndk from the official website, then unpack the android-ndk package file into the current directory.

The recommended NDK version is r8e as compatibility is ensured for that version. NDK is currently known to have problems compiling some of the packages (including PHP, Python and Lua). To download that version of the NDK for Linux use this link.

Because of problems building the static versions of PHP, Python, Lua, etc. some of the modules are currently not compatible with Android.

The r8d or preivous versions of the NDK are meant to be run only under x86 machines and should be used with care unnder x86-64 based machines.

tar -xvf android-ndk-r[x]-linux-[arch].tar.bz2

Create the standalone toolchain using the script for that purpose.

android-ndk-r[x]/build/tools/make-standalone-toolchain.sh --system=linux-x86_64\
    --platform=android-4 --install-dir=/opt/android-toolchain

And then you may use the "just" created toolchain to build Viriatum with:

export PATH=/opt/android-toolchain/bin:$PATH
export CFLAGS="-L/opt/android-toolchain/lib -I/opt/android-toolchain/include\
    -L/opt/android-root/lib -I/opt/android-root/include"
./configure --host=arm-linux-androideabi --build=arm --prefix=/opt/android-root
make && make install

Windows¶

For building using the default mingw32 toolchain.

apt-get install mingw32 mingw32-binutils
./configure --host=i586-mingw32msvc --build=i686-linux --prefix=/opt/i586-mingw32
make && make install

For building using the mingw-w64 toolchain for 64 and 32 bit options.

apt-get install mingw-w64 gcc-mingw-w64 binutils-mingw-w64
./configure --host=x86_64-w64-mingw32 --build=i686-linux --prefix=/opt/x86_64-w64-mingw32
./configure --host=i686-w64-mingw32 --build=i686-linux --prefix=/opt/i686-w64-mingw32
make && make install

Notes¶

In order to compile to WINVER <= 0x0500 (Windows 2000 or older) disable IPv6 support (#undef VIRIATUM_IP6)

FreeBSD¶

FreeBSD ignores the /usr/local directory by default so it must be included in order to conform with dependencies.

setenv CFLAGS "-L/usr/local/lib -I/usr/local/include"

Features¶

There are a lot of possible building features to enable

--with-moduleroot=path - Sets the path to be used to load the modules
--with-wwwroot=path - Sets the path to be used to install and serve the default content
--enable-debug - Enables the extra debugging capabilities in Viriatum
--enable-defaults - Enables the default paths in the viriatum server, ignoring wwwroot and moduleroot at runtime
--disable-ipv6 - Disables the support for the IPv6 protocol stack
--disable-epoll - Disables the support for the epoll mechanism
--enable-mpool- Enables the memory pool support (optimized for windows only)
--enable-prefork - Enables the prefork support so that viriatum can create workers

Modules¶

There are a series of modules for the viriatum server that are used to extend functionaly of the base server, in order to compile then some rules apply. Current modules include:

mod_lua - For interaction with the Lua interpreter
mod_php - For interaction with the PHP interpreter (complex compilation)
mod_wsgi - For interaction with the Python interpreter using the WSGI specification.

Lua Module¶

For an Ubuntu Linux environment the Lua 5.1 development packages must be included using:

apt-get install liblua5.1-0-dev

PHP Module¶

Must compile the PHP interpreter with support for embeding, this should create the library with the propr SAPI symbols loaded.

./configure --enable-embed

For static linking of the PHP library, useful for package distribution the following command may be used so that no external library dependencies are created. Note that the -fPIc flag must be set to allow the creation of static library for position independent code.

export CFLAGS="-fpic"
./configure --enable-embed=static --disable-libxml --disable-dom --disable-simplexml\
    --disable-xml --disable-xmlreader --disable-xmlwriter --without-pear --without-iconv

In order to configure the PHP interpreter to locate the php.ini file in the correct location use:

--with-config-file-path=/usr/lib

Additional libraries may be linked and a typical compilation of the PHP distribution would include the following flags required by most of the applications.

--enable-bcmath --with-mysql --with-mysqli --with-gmp --with-openssl

Additional information about the compilation flags may be found here.

The PHP module must then be compiled with CFLAGS environment variable set to point to the proper include directories so that the module code is able to compiled against these header files.

export CFLAGS="-I/usr/local/include/php -I/usr/local/include/php/main\
    -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend"

WSGI Module¶

For an ubuntu linux environment the python development packages must be included using:

apt-get install python2.7-dev

Must compile viriatum with special environment variables set to point to the correct headers directory.

export CFLAGS="-I/usr/include/python2.7"
export CFLAGS="-I/System/Library/Frameworks/Python.framework/Headers"

Docker¶

It's possible to run viriatum inside a docker container and pre-built images have been created under the public repository.

To use viriatum using these pre-built images use the following command:

docker run -d joamag/devel /usr/sbin/viriatum

Benchmarking¶

Most of the information presented in gwan benchmark is applicable for benchmarking Viriatum

For more information regarding benchmarking please check the list of todo information.

Debugging¶

For windows debugging use Visual Leak Detector using the #include <vld.h> statement
In linux/unix environments use Valgrind with valgrind --tool=memcheck --leak-check=full viriatum

Profiling¶

On windows systems the tool to uses is the Very Sleepy
For linux/unix machines the best approach is to go with either Sysprof or the more expensive Zoom from rotate right

Versioning¶

The current version numbering in viriatum follows the following wildcard based structure ${MAJ}.${MIN}.${MIC}${STA}${STA_VER} and in order to change any of these values the definitions.h and the build.json files must be changed.

In case any one of the version numbers or the stage value changes a new tag must be created in the git repository, so that the version is correctly identified for the repository contributors.

License¶

Viriatum is currently licensed under the Apache License, Version 2.0.

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