Compiling Mudlet

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Key contributing information

Clang format is used to automatically format code submissions using the src/.clang-format style. See here how to enable clang-format with Qt Creator - and make sure to specify the 'File' option for the configuration style.


development is the development branch where new features can go.


Fork and submit a PR with your changes (Github tutorial).

Note Note:

if you've previously compiled Mudlet - src/ has been renamed to src/ in Mudlet 3.3.

Continuous Integration

Mudlet is hosted on Github it uses Travis and AppVeyor for continuous integration by building on a Ubuntu 14.04 LTS Linux and a macOS 10.11 platforms (Travis) and a Visual Studios 2015 on a MicroSoft Windows Server 2012 R2 platform (AppVeyor) repectively. This means that every push to the Git repository is test compiled on Linux (Ubuntu), Mac OSX and Microsoft Windows.

Travis integration is defined in a .travis.yml file and AppVeyor integration by .appveyor.yml file, in our case, they reference shell/PowerShell scripts in the CI directory, which handle things like installing dependencies and building mudlet.

Note Note:

Travis builds do not currently package mudlet, so not everything is automated.


Compiling on Ubuntu

These instructions will get you setup compiling on Ubuntu. Need a hand? Discord, Join us on Gitter (need a Github account), or forums.

1. Ubuntu 16.04 setup

If you're on Ubuntu 16.04 (Xenial Xerus), install the following. If you're on a newer Ubuntu, skip this step and go to 2. Install dependencies.

 sudo add-apt-repository ppa:beineri/opt-qt58-xenial
 sudo apt update
 sudo apt install qt58-meta-full qt58creator
 source /opt/qt58/bin/

2. Install dependencies

sudo apt install git build-essential qt5-default qtmultimedia5-dev qttools5-dev \
  libhunspell-dev lua5.1 liblua5.1-0-dev libpcre3-dev libboost-dev zlib1g-dev cmake \
  libhunspell-dev lua-rex-pcre lua-sql-sqlite3 lua-filesystem lua-zip libyajl-dev \
  libzip-dev libgstreamer0.10-0 libglu1-mesa-dev ccache \
  mesa-common-dev qtcreator libpulse-dev libglib2.0-dev luarocks libboost-all-dev
sudo apt install gstreamer0.10-fluendo-mp3 # may not work on newer Ubuntu
sudo luarocks install luautf8

3. Get Mudlet source

git clone --recursive mudlet

4. Create a build directory

 cd mudlet
 mkdir build
 cd build

5. Run the following commands, depending on which build system you want to use


cmake ..


qmake CONFIG+=debug ../src/


make -j `nproc`

5. Start the application you have just compiled - enjoy

cd src

Compiling on macOS

These instructions will get you setup compiling on macOS. Need a hand? Join us on Gitter (need a Github account), Discord server or forums otherwise.

1. Install prerequisites

Install XCode, command line tools for XCode, HomeBrew and CocoaPods (we'll need packages from both).

Once everything is installed, do:

 brew doctor
 brew update
 brew install git

2. Get Mudlet source

 git clone --recursive mudlet

3. Go to the parent of the mudlet "src" folder and create (if necessary) a build subdirectory (this is so that we can build out of source which keeps the source code clean}

 mkdir build

3. Setup your environment you only need the first three lines if your system cannot find the right Qt libraries or tools, the added directories might be different if you have installed them differently

 export PATH="/usr/local/opt/qt5/bin:$PATH"
 export LDFLAGS=" -L/usr/local/opt/qt5/lib ${LDFLAGS}"
 export CPPFLAGS=" -I/usr/local/opt/qt5/include ${CPPFLAGS}"
 sudo luarocks-5.1 install lrexlib-pcre
 sudo luarocks-5.1 install luasql-sqlite3
 sudo luarocks-5.1 install luautf8

4. Go to the mudlet build folder

 cd build

5. Run the following commands, depending on which build system you want to use (qmake IS recommended for Linux and Mac platforms)


 qmake ../src/


 cmake ..


 make -j `sysctl -n hw.ncpu`

6. Enjoy

The is now available in src/ for launching.

Compiling on Debian 'Sid'

1. Install required packages from main repo.

sudo apt-get install build-essential git liblua5.1-dev zlib1g-dev libhunspell-dev libpcre3-dev \
libzip-dev libboost-dev libyajl-dev libpulse-dev lua-rex-pcre lua-filesystem lua-zip \
lua-sql-sqlite3 qt5-default qtmultimedia5-dev qttools5-dev luarocks ccache
sudo luarocks install luautf8  

2. Grab latest Mudlet source.

mkdir ~/projects && cd ~/projects && git clone --recursive mudlet

3. Build Mudlet.

cd ~/projects/mudlet/src
sudo make install

Compiling on Debian 9 'Stretch'

1. Install required packages.

sudo apt-get install build-essential git liblua5.1-dev zlib1g-dev libhunspell-dev libpcre3-dev \
libzip-dev libboost-dev libyajl-dev libpulse-dev lua-rex-pcre lua-filesystem lua-zip \
lua-sql-sqlite3 qt5-default qtmultimedia5-dev qttools5-dev luarocks ccache
sudo luarocks install luautf8  

2. Get Mudlet source.

mkdir ~/source && cd ~/source
git clone --recursive mudlet

Note: the line above will check out `development` branch source code, and this might not always be stable. You can check out the latest release source code using this command:

git clone --recursive --branch master mudlet

3. Build Mudlet.

mkdir ~/source/mudlet/build && cd ~/source/mudlet/build
qmake ../src/
make -j `nproc`
sudo make install

After these steps you can run Mudlet by typing:


Compiling on ArchLinux

The best way to do this would be to use the PKGBUILD found here. You'll just download the PKGBUILD into a directory, run

sudo pacman -U [name of the generated pkg file]

and you'll be done. For more info on what this does, visit this site.

Compiling on Gentoo

An overlay containing Mudlet is available for compiling Mudlet on Gentoo.

Compiling on Windows 10 (and possibly previous versions)

These instructions will get you setup compiling on Windows. Need a hand? Join us on Gitter (need a Github account), Discord server or forums otherwise.

A video walkthrough of these instructions is available - check it out if you get stuck!

MinGW is able to make use of all the cores on your system to do parallel compilation - throughout this tutorial a dualcore system is assumed, but if you have more than 2 cores set the -j # to the number of threads you need. For example, on an AMD Ryzen that has 6 cores and 12 threads, -j 12 will make full use of the CPU.

1.Download & Install the Prerequisites

In places where a version number is included in a prerequisite item concerned it is possible that a later version of that item is available and can be used.
Run the installer and de-select everything and just select:
 Qt→Qt 5.9.3→MinGW 5.3.0 (32 bit)
 Tools→MinGW 5.3.0

In this tutorial, it is installed in C:\Qt\ (so you will have C:\Qt\5.x)

7Zip (choose the one appropriate for your system): (32-Bit) (64-Bit)
 Recommended if you don't have a good source editor installed already (it is released under a GPL License).
Latest msys from:

Right-click, select 7-Zip -> Extract files... and extract the msys folder using 7zip into C:\mingw32, so you get C:\mingw32\msys:

7zip extract windows.png


2.Download libraries in MSYS

Open MSYS - doubleclick msys.bat in the C:\mingw32\msys folder. It might take a while to come up. Copy the lines below when it does and right-click on the terminal to paste them:

mkdir src
cd src
wget --no-check-certificate --output-document hunspell-1.5.4.tar.gz
wget --no-check-certificate
wget --no-check-certificate
wget --no-check-certificate
wget --no-check-certificate
wget --no-check-certificate

A folder will get created in C:\mingw32\msys\home\your_name\src with all the files.

Extract all libraries with:

for a in `ls -1 *.tar.gz`; do tar -xvzf $a; done
tar -xvjf zziplib-0.13.62.tar.bz2
mkdir openssl-1.0.2n-i386-win32 && cd openssl-1.0.2n-i386-win32 && unzip -x && cd..


wget --no-check-certificate
tar -xvzf boost_1_65_1.tar.gz
mkdir /c/mingw32/include
cp -r boost_1_65_1/boost /c/mingw32/include/boost

3.Compiling libraries

Environment Settings

You want control over what compilers are being using so prefix your Path with (in system environment variables), (in the Windows 7 case and possibly others you may need to edit C:\mingw32\msys\etc\profile which contains a couple of export lines to configure the PATH environment variable depending on the value of MSYSTEM - in which case unix file separators '/' are used and individual entries separated with ':', for instance the first of the following is entered as /c/Python27):


Be sure to restart msys.bat after setting the above to pick up the new values.

MSYS Compilations

All of the following will be completed inside the msys command prompt:

cd ~/src/hunspell-1.5.4
./configure --prefix=/c/mingw32 && make -j 2 && make install
cd ~/src/pcre-8.41
./configure --prefix=/c/mingw32 --enable-utf && make -j 2 && make install
cd ~/src/sqlite-autoconf-3210000
./configure --prefix=/c/mingw32 && make -j 2 && make install
ZLib 1.x (ZLib 0.x is supported in source code but may not handle UTF-8 file-names)

Note that although make -f win32/Makefile.gcc install displays a pair of cp sourceFile destinationFile actions they are disabled from occurring as part of the install action and must be carried out manually as shown:

cd ~/src/zlib-1.2.11
make -f win32/Makefile.gcc
export INCLUDE_PATH=/c/mingw32/include/
export LIBRARY_PATH=/c/mingw32/lib/
export BINARY_PATH=/c/mingw32/bin/
make -f win32/Makefile.gcc install
cp zlib1.dll /c/mingw32/bin
cp libz.dll.a /c/mingw32/lib
cd ~/src/libzip-1.3.2/

There is a known issue with libzip-1.3.1 and libzip-1.3.2 which needs a manual edit to remove a test on WIN32_HOST i.e. Windows platforms, from the ./regress/ as detailed in - presumably this will be fixed in 1.3.3 onwards. Without the patch/change make install will fail with "nonrandomopentest.c:51:39: error: macro "open" requires 3 arguments, but only 2 given" message.

./configure --prefix=/c/mingw32 && make -j 2 && make install

zziplib's supplied configure file has two places where the options applied to the uname utility come out wrong on msys and they have to be modified:

cd ~/src/zziplib-0.13.62
sed --in-place=.bak 's/uname -msr/uname -ms/g' configure
configure --disable-mmap --prefix=c:/mingw32/
make -j 2 && make install

Yajl2 expects to be build with CMake and, on a Windows Platform, it seems to have a default MSVC compiler, so we have to tell it otherwise and modify the CMake project file to be a bit more specific about selecting something:

cd ~/src/yajl-2.1.0
export CMAKE_C_COMPILER="/c/Qt/Tools/mingw530_32/bin/gcc.exe"
sed --in-place=.bak 's/(WIN32)/((WIN32) AND (MSVC))/g' CMakeLists.txt
mkdir build
cd build
cmake -Wno-dev -G "MSYS Makefiles" ..
make -j 2
cp yajl-2.0.1/lib/* /c/mingw32/lib/
cp -R yajl-2.0.1/include/* /c/mingw32/include/
'Lua 5.1

Edit .\src\lua-5.1.5\Makefile, changing INSTALL_TOP= /usr/local to INSTALL_TOP= /c/mingw32 AND TO_LIB= liblua.a to TO_LIB= liblua.a lua51.dll - each change is only to one place in the file:

cd ~/lua-5.1.5 
sed --in-place=.bak 's/INSTALL_TOP= \/usr\/local/INSTALL_TOP= \/c\/mingw32/' Makefile
sed --in-place 's/TO_LIB= liblua.a/TO_LIB= liblua.a lua51.dll/' Makefile
make mingw
make install

3.Downloading Mudlet Sources

Getting Mudlet

From within msys:

cd ~/src
git clone --recursive
cd Mudlet/src

NOTE: If you install any of the above in a directory other than /c/mingw32, it is necessary to override some of the default include/lib paths that qmake sets up. To do so, you'll need to append a number of INCLUDEPATH and LIBPATH parameters to the qmake call.

Example (installed in an F: drive):

qmake CONFIG+=debug INCLUDEPATH+=/f/mingw32/include INCLUDEPATH+=/f/mingw32/lib/include LIBPATH+=/f/mingw32/lib LIBPATH+=/f/mingw32/lib/lib LIBPATH+=/f/mingw32/bin

Building Mudlet from msys console

cd ~/src/Mudlet
mkdir build
cd build
/c/Qt/5.9.3/mingw53_32/bin/qmake.exe ../src/
make -j 2

Building Mudlet from QtCreator

Open C:\mingw32\msys\home\<username>\src\Mudlet\src\ in Qt Creator, enable Debug and Release builds and hit Configure Project:

Selection 173.png

Press Ctrl+5 and update project settings for the # of cores/threads available to your system:

Change Qt Creator to use many cores.gif

Hit run:

Selection 176.png

Click on Compile Output to see progress on compiling:

Selection 177.png

This'll take ~10min, after which Mudlet will launch! But it's not completely ready yet - close it and follow more:

4.Copy Needed DLLs

Copy the following dll's needed to run Mudlet: See above note about alternative install paths before copying.

cd ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Debug/debug
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Cored.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Guid.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libEGLd.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libGLESv2d.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Networkd.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5OpenGLd.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Widgetsd.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Multimediad.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Gamepadd.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libgcc_s_dw2-1.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libstdc++-6.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libwinpthread-1.dll .
cp /c/mingw32/lib/libyajl.dll .
cp $HOME/src/lua-5.1.5/src/lua51.dll .
cp $HOME/src/lua-5.1.5/src/lua51.dll /c/mingw32/bin
cp $HOME/src/openssl-1.0.2k/libeay32.dll .
cp $HOME/src/openssl-1.0.2k/ssleay32.dll .
cp /c/mingw32/bin/libzip-2.dll .
cp /c/mingw32/bin/libhunspell-1.4-0.dll .
cp /c/mingw32/bin/libpcre-1.dll .
cp /c/mingw32/bin/libsqlite3-0.dll .
cp /c/mingw32/bin/zlib1.dll .
cp ~/src/Mudlet/src/*.dic .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/audio .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/mediaservice .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/platforms .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/imageformats .
mkdir ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Release/release
cd ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Release/release
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Core.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Gui.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libEGL.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libGLESv2.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Network.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5OpenGL.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Widgets.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Multimedia.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/Qt5Gamepad.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libgcc_s_dw2-1.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libstdc++-6.dll .
cp /c/Qt/5.9.1/mingw53_32/bin/libwinpthread-1.dll .
cp /c/mingw32/lib/libyajl.dll .
cp $HOME/src/lua-5.1.5/src/lua51.dll .
cp $HOME/src/lua-5.1.5/src/lua51.dll /c/mingw32/bin
cp $HOME/src/openssl-1.0.2k/libeay32.dll .
cp $HOME/src/openssl-1.0.2k/ssleay32.dll .
cp /c/mingw32/bin/libzip-2.dll .
cp /c/mingw32/bin/libhunspell-1.4-0.dll .
cp /c/mingw32/bin/libpcre-1.dll .
cp /c/mingw32/bin/libsqlite3-0.dll .
cp /c/mingw32/bin/zlib1.dll .
cp ~/src/Mudlet/src/*.dic .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/audio .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/mediaservice .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/platforms .
cp -r /c/Qt/5.9.1/mingw53_32/plugins/imageformats .

5.Setting up Lua libraries

At this point your Lua install will be bare-bones and lacking the Lua libraries Mudlet uses.

cd ~/src
wget --no-check-certificate

Open up the Windows command line cmd to install Luarocks:

cd C:\mingw32\msys\home\%USERNAME%\src\luarocks-2.4.0-win32
install.bat /P C:\LuaRocks /MW

Wait for the installation to finish. Then:

cd \LuaRocks\lua\luarocks
powershell -Command "(gc cfg.lua) -replace 'mingw32-gcc', 'gcc' | Out-File -encoding ASCII cfg.lua"
cd \LuaRocks
luarocks install LuaFileSystem
luarocks install LuaSQL-SQLite3 SQLITE_INCDIR="c:\mingw32\include" SQLITE_LIBDIR="c:\mingw32\lib"
luarocks install lrexlib-pcre PCRE_LIBDIR="c:\mingw32\lib" PCRE_INCDIR="c:\mingw32\include"
luarocks install luautf8

Back in the msys command line:

cd ~/src
wget --no-check-certificate
unzip master
cd luazip-master/
gcc -O2 -c -o src/luazip.o -IC:/mingw32/include/ src/luazip.c
gcc -shared -o zip.dll src/luazip.o -Lc:/mingw32/lib -lzzip -lz c:/mingw32/bin/lua51.dll -lm
cp zip.dll ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Debug/debug
cp zip.dll ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Release/release
cp -r /c/mingw32/lib/lua/5.1/* ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Debug/debug
cp -r /c/mingw32/lib/lua/5.1/* ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Release/release
cp -r ~/src/Mudlet/src/mudlet-lua/ ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Debug
cp -r ~/src/Mudlet/src/mudlet-lua/ ~/src/Mudlet/build-mudlet-Desktop_Qt_5_9_1_MinGW_32bit-Release

You're done! Press the green Run button again in Qt Creator (bottom-right) and a Mudlet window should come up without any errors.


To uninstall, remove the following folders:


Setting up IDEs


If you'd like to use CLion and it is giving the following error:

    By not providing "FindQt5Core.cmake" in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by "Qt5Core", but
    CMake did not find one.
    Could not find a package configuration file provided by "Qt5Core" with any
    of the following names:
    Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set
    "Qt5Core_DIR" to a directory containing one of the above files.  If
    "Qt5Core" provides a separate development package or SDK, be sure it has
    been installed.
You can fix this by setting -DCMAKE_PREFIX_PATH=<your Qt + version + compiler location>. For example: -DCMAKE_PREFIX_PATH=/home/vadi/Programs/Qt/5.9/gcc_64/
CLion CMake settings - finidng Qt.png