|
|
(228 intermediate revisions by 20 users not shown) |
Line 1: |
Line 1: |
− | {{Template:Quicklinks}} | + | {{Quicklinks|Build_Instructions}} |
| | | |
− | [[Category:Users]]
| + | This page covers building OpenSimulator from source code on multiple platforms. Please help us keep this page up to date as the project progresses. If you just want to run OpenSimulator, [[Download]] and [[Configuration|run]] the binary build instead. In the most cases, you should be fine with binaries. |
− | This page covers building OpenSim from source code on multiple platforms. Please help us keep this page up to date as the project progresses. | + | |
| | | |
− | ==Download OpenSim == | + | = Obtaining the Source Code = |
| | | |
− | Check out the [[Download]] page for instructions on obtaining an OpenSim source release. | + | Check out the [[Download]] page for instructions on obtaining an OpenSimulator source release. If you want the current development code (i.e. the Git master branch) see [[Developer_Documentation#Source_Code_Repository_Access]]. |
| | | |
− | ==General Notes== | + | = Building = |
| | | |
− | Although this page is long, building is generally quite simple. See the BUILDING.txt file in the distribution itself for simplified instructions. This page discusses what you need to do before actual building.
| |
| | | |
− | ===Setting Files===
| + | Although this page is long, building is generally quite simple. See the BUILDING.txt file in the distribution itself for simplified instructions. |
| | | |
− | Unlike binary distributions, OpenSimulator source distributions are delivered without default configuration files, i.e, '''OpenSim.ini''' and '''StandaloneCommon.ini'''. Therefore you'll need to create them by yourself. Look carefully at [[Configuration]] page not to suffer from the errors like ''"APPLICATION EXCEPTION DETECTED: System.UnhandledExceptionEventArgs Exception: System.Exception: Configuration file is missing the [SimulationDataStore] section"''(= missing "OpenSim.ini") or ''"Error loading plugin from OpenSim.Services.FriendsService.dll, exception System.Exception: No StorageProvider configured"''(= missing "*Common.ini").
| + | == Version 0.9.3.0 and above == |
| + | Microsoft stopped the development of .Net Framework and Mono, replacing them by new dotnet |
| + | This is a significant breaking change that we try to follow on 0.9.3.0. |
| | | |
− | ===Crash Course on Linux=== | + | === Get source code === |
| | | |
− | The easiest platform to get running on the Linux side is Ubuntu 32bit. This is what most of the developers running Linux use. If you are looking for the quick path, start [[#Ubuntu|there]].
| + | get or update source from git |
| | | |
− | '''Many distros (including Ubuntu) ship with only the "mono-runtime" package installed, however you need to install "mono-complete" for some OpenSimulator features such as LSL script commands.'''
| + | git clone git://opensimulator.org/git/opensim |
| | | |
− | == MS Windows == | + | === Building on Windows === |
| + | To building under Windows, the following is required: |
| | | |
− | OpenSim requires either the .Net Framework version 3.51, or Mono 2.4.3 or newer. It supports the following compilers:
| + | * [https://dotnet.microsoft.com/en-us/download/dotnet/8.0 dotnet 8.0 SDK] |
| | | |
− | Net Framework is available from here: [http://www.microsoft.com/downloads/details.aspx?FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7&displaylang=en www.microsoft.com/downloads/details.aspx]
| + | optionally also |
| | | |
− | *[http://msdn2.microsoft.com/en-us/express/aa700756.aspx Microsoft Visual C# Express Edition] (note: not Visual C++) | + | * Visual Studio .NET, version 2022 or later |
− | New URL: http://www.microsoft.com/express/Windows/ ( The Visual Studio® 2010 Express )
| + | |
− | *[http://www.mono-project.com/ mono]
| + | |
| | | |
− | Additional note: If you like IDE's you will need C# express 2008 or VS 2008.
| |
| | | |
− | Additional note: Microsoft C# Express v9 may install .Net 3.5 with resultant path error.
| + | Create the project files running: |
| | | |
− | #To avoid install .Net framework version 2.0 (installed by default in Windows XP & newer)
| + | runprebuild.bat |
| | | |
− | Additional note: It is possible to develop on Windows Vista 64 bits with the following tweaks:
| + | Load the generated OpenSim.sln into Visual Studio and build the solution, or just run |
| + | compile.bat |
| | | |
− | #Select OpenSim project properties from solution and choose platform to be x86. Rebuild solution.
| + | to run you may also need |
− | #Select OpenSim.exe properties under solution bin folder and choose windows xp sp 2 compatibility mode + run as administrator.
| + | * to install the [https://docs.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170 run time files for vc++] |
| + | * to authorize the install of older .NetFramework 3.5 |
| | | |
− | Additional note: It is possible to develop with Visual Studio 2010 - C# Express with the following tweaks:
| |
| | | |
− | #In the top-level directory, run the '<tt>runprebuild.bat</tt>' file. This will create a VS2008 solution file.
| + | Configure, See [[Configuration]]. |
− | #Open the VS2008 solution file in VS 2010 Express and run the conversion wizard to crease a VS2010 solution file.
| + | |
− | #In the solution explorer of the resulting project, right click on each project (there are 91) and select properties. Under the Application tab, set the Target framework to .NET Framework 3.5.
| + | |
− | #In the solution explorer, under the OpenSim project select "app.config".
| + | |
− | #Copy the contents of bin\OpenSim.exe.config into the app.config file
| + | |
| | | |
− | === Building ===
| |
| | | |
− | *In the top-level directory, run the '<tt>runprebuild.bat</tt>' file. This will create a VS2008 solution file, a nant build file and a '<tt>compile.bat</tt>' file.
| + | Now just run OpenSim.exe from the bin folder, and set up the region. |
| | | |
− | *Open the resulting sln file with visual studio and build it there, or
| + | === Building on Linux / Mac === |
− | *Run the '<tt>compile.bat</tt>' file. This will build the executable using MSBuild.
| + | |
− | *if you prefer to use nant, run nant in the same top-level directory. This will build the executables.
| + | |
| | | |
− | === Running ===
| + | you will need |
| + | * [https://dotnet.microsoft.com/en-us/download/dotnet/8.0 dotnet 8.0 SDK] |
| + | * libgdiplus |
| + | **if you have mono 6.x complete, you already have libgdiplus, otherwise you need to install it using a package manager for your operating system, like apt, brew, macports, etc. For example on debian: |
| + | *** apt-get update && apt-get install -y apt-utils libgdiplus libc6-dev |
| | | |
− | Copy the <tt>bin/OpenSim.ini.example</tt> file to <tt>bin/OpenSim.ini</tt> before making any changes.
| |
| | | |
− | Assuming you initially want to create an Opensim Standalone setup, the example Opensim.ini already has the appropriate [Architecture] setting for that in place referring to an include file at <tt>bin/config-include/StandaloneCommon.ini.example</tt>.
| + | Create the project files, run: |
| | | |
− | Copy the <tt>bin/config-include/StandaloneCommon.ini.example</tt> file to <tt>bin/config-include/StandaloneCommon.ini</tt> before making any changes to that too. A cache is recommended to make Opensim run in a more stable and efficient manner. Choose a cache as described in <tt>bin/config-include/StandaloneCommon.ini</tt>.
| |
− |
| |
− | Double-click on the <tt>OpenSim.exe</tt> executable file in the <tt>bin</tt> directory. This will start up OpenSim in standalone mode.
| |
− |
| |
− | The debugger in VS2008 C# may be used to step through the code. For those that use a Cygwin shell, you may find that one or more dll's have permissions that cause problems running. Most find that a "<tt>chmod 777 *</tt>" from the <tt>bin</tt> directory solves this.
| |
− |
| |
− | '''''Windows Vista'''''
| |
− |
| |
− | Some people have reported that to run on Windows Vista, you must first disable Windows Firewall. Under the new "Start" button of Vista, select "Control panel". Then double-click "Windows Firewall". In the window that pops up, on the left column, select "Turn Windows Firewall on or off". You will have to give permission for this to run, then select the option "Off (not recommended)". Click "OK" and exit from the Windows Firewall window.
| |
− |
| |
− | If you have McAfee SecurityCenter, see the description below.
| |
− |
| |
− | Once all the security features are disabled, right click on <tt>OpenSim.exe</tt> and select "Run as administrator". This will pop up a window asking permission, select "Allow". Your OpenSim server should run in a DOS-like window and accept connections.
| |
− |
| |
− | '''''McAfee Security'''''
| |
− |
| |
− | McAfee Security does not allow applications to listen on ports not explicitly specified. You have two options: 1) disable firewall protection all together, 2) enable <tt>OpenSim.exe</tt> to be able to open ports.
| |
− |
| |
− | ''Disable firewall''
| |
− |
| |
− | Open McAfee SecurityCenter. Select "Internet & Network". In the lower left corner is a small link to "Configure...". Select this. In the right side of the window, select the bar that says "Firewall protection is enabled". Here you can select "Off".
| |
− |
| |
− | ''Enable <tt>OpenSim.exe</tt> to open ports''
| |
− |
| |
− | Open McAfee SecurityCenter. Select "Internet & Network". In the lower left corner is a small link to "Configure...". Select this. In the right side of the window, select the bar that says "Firewall protection is enabled". Select the "Advanced..." button. This will pop up a new window.
| |
− |
| |
− | In the new window, on the left side, select "Program Permissions." In the middle on the right side of the window, select the "Add Allowed Program" button. Use the browser that pops up to find the OpenSim executable and select it.
| |
− |
| |
− | Finally, select "OK" and exit the McAfee SecurityCenter window.
| |
− |
| |
− | == Mac OS X ==
| |
− |
| |
− | === Mac OS X 10.5 and later, Intel ===
| |
− |
| |
− | You might find it work for your environment (OS X 10.5.7, Intel):
| |
− |
| |
− | * make sure you have X11 installed
| |
− | * grab the Apple Dev Tools from [http://developer.apple.com/]
| |
− | * install Mono Framework 2.4 from [http://www.go-mono.com/mono-downloads/download.html]
| |
− | * Recent versions of Mono/Nant may require an adjustment to PkgConfig. And in Terminal or X11 edit the .profile file and add the following line:
| |
− | export PKG_CONFIG_PATH="/Library/Frameworks/Mono.framework/Versions/Current/lib/pkgconfig/:${PKG_CONFIG_PATH}"
| |
− | * Get OpenSim source:
| |
− | * Compile OpenSim:
| |
− | cd opensim
| |
− | ./runprebuild.sh
| |
− | nant
| |
− |
| |
− | You might find it work for your environment (OS X 10.5.7 and 10.6, Intel) on (8/9/09):
| |
− |
| |
− | * make sure you have X11 installed (installed by default on 10.5 and 10.6)
| |
− | * Very important to grab the latest Apple Dev Tools (3.2.1 on 8/9/09) (from [http://developer.apple.com/] - You will need a developer account, it is free.
| |
− | * install Mono Framework 2.6.x from [http://www.go-mono.com/mono-downloads/download.html] ''Or perhaps the latest stable release.''
| |
− | ''Mono includes nant, so it should not be necessary to build nant with MacPorts, but others have done so and left these intructions:''
| |
− | * install Mac Ports from [http://www.macports.org/]
| |
− | * Mac Ports should update its packages on install, but to be safe, type the following at the Terminal:
| |
− | sudo port -v selfupdate
| |
− | * Use mac ports to install nant. (This should pull in everything you need. I think this will also try to install mono, but since I already had it installed, that errored on me. Don't worry about it though, it should install everything else you need.) At the Terminal type:
| |
− | sudo port install nant
| |
− |
| |
− | * Get OpenSim source. I downloaded 0.6.6 from [http://opensimulator.org/wiki/Download]
| |
− | * Uncompress the download.
| |
− | * Compile OpenSim:
| |
− | cd opensim
| |
− | ./runprebuild.sh
| |
− | nant
| |
− |
| |
− | *Then of course the issue with the 0.6.6 release.
| |
− | This release had some bugs with default automatic configuration on the first startup of OpenSim.exe. bin/Regions/default.xml (region configuration file) is not automatically created in the main directory. Therefore, you must manually create this file. Here is an example.
| |
− | <pre>
| |
− | <Root>
| |
− | <Config sim_UUID="UUID" sim_name="NAME" sim_location_x="1000" sim_location_y="1000"
| |
− | internal_ip_address="IP_ADDRESS_OF_SERVER" internal_ip_port="9000" allow_alternate_ports="false"
| |
− | external_host_name="DNS_NAME_OF_SERVER" master_avatar_uuid="00000000-0000-0000-0000-000000000000"
| |
− | estate_covanant_uuid="00000000-0000-0000-0000-000000000000" master_avatar_first="FIRST_NAME"
| |
− | master_avatar_last="SECOND_NAME" master_avatar_pass="PASSWORD" />
| |
− | </Root>
| |
− | </pre>
| |
− | You must change UUID, NAME, IP_ADDRESS_OF_SERVER, DNS_NAME_OF_SERVER, FIRST_NAME, SECOND_NAME and PASSWORD to your own values.
| |
− | (I noticed than IP_ADDRESS_OF_SERVER should be set to real IP not to 127.0.0.1)
| |
− |
| |
− | '''Summary''':
| |
− |
| |
− | *Run OpenSim0.6.6Setup.exe and install OpenSim in Windows
| |
− | *Run OpenSim.exe and enter default values - record them!
| |
− | *Shutdown simulator (command: shutdown)
| |
− | *Create default.xml with copy of above
| |
− | *Change values in default.xml with recoded values
| |
− | *Be sure default.xml be in main directory (same with OpenSim.ini)
| |
− | *Run again OpenSim.exe
| |
− | *Connect with viewer
| |
− |
| |
− | === Mac OS X 10.4/10.5 on PowerPC ===
| |
− | OpenSim can run on PowerPC Macs (such as G4, G5). These instructions were tested on 10.5.8. Note that two libraries must also be built from source. Caveat: the OpenSim app was only briefly tested in self-contained mode. There may well be issues with this build. Feel free to note any issues you find below (or in a new wiki page? discussion?).
| |
− |
| |
− | Unfortunately, the OpenSim version used here must be compiled on one version of Mono (2.6.7) and run on another (2.8.2). This means either upgrading Mono after the build, or having both versions installed and accessing the older version when you want to build. These instructions let you have both versions installed.
| |
− |
| |
− | * Install Xcode 3.1.4 Developer Tools from from http://developer.apple.com/. You must have a free Apple developer account to access the downloads. 3.1.4 was the last PowerPC Xcode.
| |
− |
| |
− | * (10.4 only) Install X11 from the Optional Install (or see if it's a Customize option when you install Xcode). 10.5 gets X11 by default (''from OS X or dev tools?'').
| |
− | * Install Mono 2.6.7 PowerPC Framework from here: http://www.go-mono.com/mono-downloads/download.html (binary OS X Framework, no need to build from source)
| |
− | * Then install Mono 2.8.2 PowerPC framework. For these instructions to work, you must first install 2.6.7, THEN 2.8.2. (The old framework is not deleted, but "Current" symlinks are updated).
| |
− | * Download OpenSim 0.7.0.2 source tarball: http://dist.opensimulator.org/opensim-0.7.0.2-source.tar.gz Expand to a suitable folder for development and running.
| |
− | ** Feel free to try a newer version of OpenSim (the repository is on git now).
| |
− | ** If you used a newer OpenSim version, check BUILDING.txt for any changes to build instructions (we fall under "Linux")
| |
− | * Edit or create .profile or .bash_profile in your OS X home folder, with the following lines:
| |
− | # remember real PATH
| |
− | export OSIM_HACK_ORIG_PATH=$PATH
| |
− |
| |
− | # normal path for running OpenSim
| |
− | export PATH=$PATH:/Library/Frameworks/Mono.framework/Versions/Current/bin:/usr/local/mysql/bin
| |
− |
| |
− | # Just for nant:
| |
− | export PKG_CONFIG_PATH=/Library/Frameworks/Mono.framework/Versions/2.6.7/lib/pkgconfig
| |
− | alias oldpath="export PATH=$OSIM_HACK_ORIG_PATH:/Library/Frameworks/Mono.framework/Versions/2.6.7/bin"
| |
− |
| |
− | * Open a new Terminal window, and cd to your uncompressed OpenSim source folder (shortcut: type "cd " then drag the folder to the Terminal window). The enter these commands:
| |
− | oldpath
| |
| ./runprebuild.sh | | ./runprebuild.sh |
− | nant
| |
| | | |
− | * nant should take around 10 minutes to compile your OpenSim. If you get through that without errors, you're halfway there! (I did get 234 warnings).
| + | then run |
− | * *Important* Before we forget, open a new Terminal window (necessary to avoid the effects of "oldpath").
| + | dotnet build --configuration Release OpenSim.sln |
− | * Now we need PowerPC versions of two libraries. Build each one and replace the compiled .dylib files in the opensim/bin folder.
| + | |
− | ** libode.dylib http://cdnetworks-us-1.dl.sourceforge.net/project/opende/ODE/0.11.1/ode-0.11.1.zip
| + | |
− | ** libopenjpeg-dotnet-2.1.3.0-dotnet-1.dylib (checked out with svn:)
| + | |
− | svn co http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk/openjpeg-dotnet libopenmetaverse-read-only | + | |
− | cd libopenmetaverse-read-only
| + | |
− | ** To build, remove the Makefile file, which is for Linux, and rename Makefile.osx to just Makefile, then give the command: make )
| + | |
− | ** Remove the other versions of the two libraries (similar names, different extensions, like "libode-x86_64.so". Two libode's and three libopenjpeg's).
| + | |
− | * Configure your sim: Copy OpenSim.ini.example to OpenSim.ini and customize it per its comments.
| + | |
− | * Likewise copy and customize StandaloneCommon.ini in bin/config-include
| + | |
− | * Note that the comments say that the current SQLite plugin doesn't work on OS X. Either solve that, or install MySQL, which requires no compiling and is relatively easy to set up:
| + | |
− | ** From http://downloads.mysql.com/archives.php?p=mysql-5.1&v=5.1.40, download MySQL 5.1.40 for 10.5 PowerPC (installer, not 64-bit)
| + | |
− | ** Run the installer. (which installs to /usr/local)
| + | |
− | ** Install MySQL.prefPane into System Preferences by double-clicking it.
| + | |
− | ** Open the pref pane and start MySQL.
| + | |
− | ** (Optional:) For unattended startup, install MySQLStartupItem (doesn't always work for me).
| + | |
− | ** (Recommended:) In Terminal, do the one-time setup of MySQL with this command: mysql_secure_installation
| + | |
− | ** In MySQL, create the opensim user per the comments in OpenSim.ini. Give it all the create privileges.
| + | |
− | *** Since this is a Mac, you could use Sequel Pro (donationware) to do that in a nice GUI. Standard connection, host: 127.0.0.1 (if on the same Mac)
| + | |
− | * You're ready to run OpenSim. In that new Terminal window, cd to your OpenSim-source/bin folder.
| + | |
− | mono OpenSim.exe
| + | |
− | * If all is well, you will be prompted "New region name []: "
| + | |
− | * Turn to "Running OpenSim for the first time" on wiki page [[Configuration - OpenSim]]
| + | |
− | * When fully up and running, the prompt is "Region (<region-name>) #"
| + | |
− | ''Here are the earlier instructions for PowerPC, and others for Intel:''
| + | |
− | ----
| + | |
− | * OpenSim is now working on PowerPC Macs! Thanks to DrScofield and those who helped him. Current nightly builds for PowerPC are not working, not sure about Intel so use the 0.5 Build. OpenSim works on Intel Macs. I'm testing on PowerBook G4. Tested these step on 10.5, but not 10.4 but should work (Works on iMac G5 with OS 10.4.11, including expanding to local grid mode.
| + | |
− | * Install XCode Developers Tools from DVD/CD Installation Disk or download from http://developer.apple.com/. You have to create an Apple account to access the downloads if you don't have an Apple account.
| + | |
− | * Install X11 for 10.4 from the Optional Install from the DVD/CD Installation Disk. X11 for 10.5 is installed by default.
| + | |
− | * Install Mono 1.2.5 from http://ftp.novell.com/pub/mono/archive/1.2.5/macos-10-universal/5/MonoFramework-1.2.5_5.macos10.novell.universal.dmg (The more recent releases Mono 1.2.6, 1.9.1 and 2.0.1 do not appear to work with these installation instructions And in Terminal or X11 edit the .profile file and add the following line:
| + | |
− | export PKG_CONFIG_PATH="/Library/Frameworks/Mono.framework/Versions/Current/lib/pkgconfig/:${PKG_CONFIG_PATH}"
| + | |
− | * Compile OpenSim
| + | |
− | svn co http://opensimulator.org/svn/opensim/tags/0.5.0-release opensim
| + | |
− | cd opensim
| + | |
− | ./runprebuild.sh
| + | |
− | nant
| + | |
| | | |
− | * Download and Compile libopenjpeg-libsl-2.1.2.0.dylib and libsecondlife.dll
| + | or just |
− | * libopenjpeg-libsl-2.1.2.0.dylib:
| + | ./compile.sh |
− | svn co http://opensimulator.org/svn/opensim-libs/old/libsl1550 opensim-libs | + | |
− | cd opensim-libs/openjpeg-libsl
| + | |
− | make -f Makefile.osx
| + | |
− | cp libopenjpeg-libsl-2.1.2.0.dylib ../../bin
| + | |
− | * Note: The Makefile that creates the libopenjpeg-libsl-2.1.2.0.so does not compile on PowerPC, but works properly on Intel Macs. Looks like a gcc issue with compile options. (It appears to work on iMac G5 with OS X 10.4.11.
| + | |
| | | |
− | * libsecondlife.dll: (for PowerPC Only, see details on this step [http://xyzzyxyzzy.net/2008/02/12/installing-opensim-on-powerpcor-of-eggs-and-virtual-worlds installing OpenSim on PowerPC…or: of eggs and virtual worlds])
| |
− | cd .. (back into opensim-libs)
| |
− | nant
| |
− | cp bin/libsecondlife.dll ../bin
| |
| | | |
− | * Edit the libsecondlife.dll.config (PowerPC Only). Remove the cpu="x86" tag in the last dllmap line.
| + | Configure. See [[Configuration]]. |
| | | |
| | | |
− | == Ubuntu ==
| + | run ./opensim.sh from the bin folder, and set up the region |
| | | |
− | For Ubuntu users on older distributions (7.10, 8.04, 9.10 etc.) '''you need''' to upgrade your version of mono to at least 2.4.3. For anyone who needs to upgrade their Mono, see [[Update Mono on Ubuntu]].
| + | == Older Versions == |
| + | Source for old .Net Framework 4.x and Mono is in branch Mono-Net4X |
| + | This is mostly same code as 0.9.2.2 release. |
| | | |
− | Ubuntu Karmic (9.10) includes mono 2.4.2.3 packages.
| + | == Requirements == |
| | | |
− | Ubuntu Lucid (10.04) includes mono 2.4.4 packages
| + | OpenSimulator 0.9.0.x requires either |
| + | * [http://msdn.microsoft.com/en-us/netframework/cc378097 .NET Framework 4.0] on Windows |
| + | * [https://www.mono-project.com/download/stable/ Mono] on Linux or Mac. Mono 2.10.8 is the minimum version. |
| + | You may also need nant tool. |
| | | |
− | Ubuntu Maverick (10.10) includes mono 2.6.7 packages
| |
| | | |
− | To build:
| + | OpenSimulator >= 0.9.1 (including current master) requires |
| + | * [http://msdn.microsoft.com/en-us/netframework/cc378097 .NET Framework 4.6] on Windows |
| + | * [https://www.mono-project.com/download/stable/ Mono] on Linux or Mac. Mono 5.12 is the minimum recommended version.<br>'''Note:''' rather than using your Linux distro's Mono packages, which may be missing required components, please [https://www.mono-project.com/download/stable/ install from the official Mono repo for your distro]. |
| + | recommend compiling with msbuild. |
| | | |
− | sudo apt-get install nant mono-gmcs libmono-microsoft8.0-cil \
| + | Other platforms may have own mono distributions, or may need to compile mono on them. |
− | libmono-system-runtime2.0-cil libgdiplus libmono-i18n2.0-cil libmono-oracle2.0-cil
| + | |
− | [[Download]] opensim
| + | |
− | cd opensim
| + | |
− | ./runprebuild.sh
| + | |
− | nant
| + | |
| | | |
− | === Ubuntu 11.04 ===
| + | Other libraries used by OpenSimulator can be found at our opensim-libs git repo: |
| | | |
− | Ubuntu Natty (11.04) includes mono 2.6.7 packages.
| + | git clone git://opensimulator.org/git/opensim-libs |
| | | |
− | In this version, one only needs to apt-get install nant - this will pull down all the other required packages as dependencies. This may also be true for some of the earlier Ubuntu releases. Thus, to build:
| + | libOpenMetaVerse used can be found at https://bitbucket.org/opensimulator/ |
| | | |
− | sudo apt-get install nant
| + | You may need to compile them for your platform, in particular the unmanaged ones like Bullet or ODE native code libraries |
− | [[Download]] opensim
| + | |
− | cd opensim
| + | |
− | ./runprebuild.sh
| + | |
− | nant
| + | |
| | | |
− | To run the regression test suite, you will also need to install nunit-console, like so
| + | == MS Windows == |
| | | |
− | sudo apt-get install nunit-console
| + | === Supported Compilers === |
− | nant test
| + | * [https://visualstudio.microsoft.com/downloads/ Visual Studio Community 2017] |
| + | * Or any version that does support the .Net version. At least VS2010 for versions prior to 0.91, VS2015 for 0.91 and after. |
| + | * OpenSimulator >=0.9.2.0 can compile for .Net Framework 4.8 using runprebuild48.bat instead of runprebuild.bat below and with VS2017/19/22 |
| | | |
− | {{anchor|CentOS}}{{anchor|RedHat}}{{anchor|RHEL}}{{anchor|Fedora}}
| + | === Compiling in an IDE === |
− | == RHEL, Fedora, CentOS or Any Other RedHat-based Distributions == | + | # Run "runprebuild.bat" |
| + | # Open the resulting "OpenSim.sln" in Visual Studio IDE. |
| + | # Select Debug or Release configuration |
| + | # Menu Build -> Build Solution. |
| | | |
− | After getting run your OpenSimulator binary distributions, you'll need to get mono development library and install nant to build OpenSimulator from the source. See both sections below.
| + | ===Compiling at the Command Prompt === |
| + | # Run "runprebuild.bat". |
| + | # Run the resulting "compile.bat" file. |
| | | |
− | === Getting Mono Libraries === | + | == Linux and Other Mono Platforms == |
| | | |
− | If you have installed mono packages from the core repository for your distributions [[Dependencies#RedHat|when you run OpenSim.exe binary distribusion]], just type:
| + | === Install dotnet under Debian/Ubuntu === |
− | <pre>
| + | |
− | sudo yum install nant mono-devel
| + | |
− | </pre>
| + | |
| | | |
− | If not, just type (given that [[Dependencies#Installing from Mono Repository|you have already set up yum repository for mono]]) :
| + | For Ubuntu 22.04 LTS and higher, dotnet is available in the distribution's repos. |
− | <pre>
| + | |
− | sudo yum install mono-addon-devel
| + | |
− | </pre>
| + | |
| | | |
− | Both command will install its dependencies as well.
| + | For Ubuntu 20.04 LTS and lower, and for all versions of Debian, add Microsoft repository to your installation : |
| | | |
− | === Installing NAnt === | + | <source lang="bash"> |
| + | # Get OS version info |
| + | source /etc/os-release |
| | | |
− | Run "yum info nant" to check the version of nant package. If you find the package, then just type:
| + | # Download Microsoft signing key and repository |
− | <pre>
| + | wget https://packages.microsoft.com/config/$ID/$VERSION_ID/packages-microsoft-prod.deb -O packages-microsoft-prod.deb |
− | sudo yum install nant
| + | |
− | </pre>
| + | |
− | You can now run nant out-of-the-box.
| + | |
| | | |
| + | # Install Microsoft signing key and repository |
| + | sudo dpkg -i packages-microsoft-prod.deb |
| | | |
− | If you can't find nant package in yum repository, or you feel its version is too early for building OpenSimulator, obtain NAnt from [http://nant.sourceforge.net/ NAnt Project Site]. See User Manual there for detailed instruction. As of 0.90, you will need to create startup script like that (given you have expanded NAnt to /usr/local/nant) :
| + | # Clean up |
− | <pre>
| + | rm packages-microsoft-prod.deb |
− | sudo vi /usr/bin/nant
| + | |
− | </pre>
| + | |
− | Then inside this file :
| + | |
− | <pre>
| + | |
− | #!/bin/sh | + | |
− | exec mono /usr/local/nant/bin/NAnt.exe "$@"
| + | |
− | </pre>
| + | |
− | After that, make it executable :
| + | |
− | <pre>
| + | |
− | sudo chmod +x /usr/bin/nant
| + | |
− | </pre>
| + | |
| | | |
− | You can now run runprebuild.sh and nant to compile OpenSimulator.
| + | # Update packages |
| + | sudo apt update |
| + | </source> |
| | | |
− | == openSUSE ==
| + | Then : |
| | | |
− | Install an openSUSE 11.1, 11 or 10.3 with its default options, add the online repositories
| + | <source lang="bash"> |
− | when finished installing do an online update with all the latest packages.
| + | sudo apt update |
| + | sudo apt install dotnet-sdk-8.0 |
| + | </source> |
| | | |
− | In yast install these packages, for running Opensim in standalone mode.
| + | https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu<br/> |
− | (there is a slight diffrence between 10.3 and 11/11.1 but following should be same)
| + | https://learn.microsoft.com/en-us/dotnet/core/install/linux-debian<br/> |
− | subversion
| + | |
− | nant
| + | |
− | mono-jscript
| + | |
− | - check that mono-core is installed
| + | |
| | | |
− | just in case you do not already have it installed
| + | === Prepare to compile === |
| + | To create the several project files run on the folder opensim: |
| | | |
− | sudo zypper install mono-data-oracle | + | ./runprebuild.sh |
| | | |
− | A tip for OpenSuSE 11.1 users - you can install packages from the command line using the 'zypper' tool. For example, to install 'nant', use this command:
| + | ==== Compile with Nant ==== |
| + | On some mono versions, in particular old ones may need the use of nant to proper compile OpenSimulator, in that case just run: |
| | | |
− | sudo zypper install nant | + | nant |
| | | |
− | If you just want to use SQLite then jump to last section
| + | ==== Compile with xbuild ==== |
− | within this post.
| + | |
| | | |
− | * Optional mysql - for Opensim running in Grid mode:
| + | On mono versions you can just use xbuild. ''(msbuild is recommended for 0.9.1.0.0+)'' |
− | Install these mysql packages via yast
| + | |
− | mysql
| + | |
− | mysql-client
| + | |
− | mysql-administrator
| + | |
− | mysql-gui-tools
| + | |
− | mysql-query-browser
| + | |
| | | |
− | (note that selecting mysql in the Yast2 Installer will select the other packages automatically)
| + | xbuild |
| | | |
− | Before building create the mysql database.
| + | xbuild is no longer recommended on mono 5.x, but currently still works (5.12) |
− | /etc/init.d/mysql start
| + | |
− | mysql -u root -p -h localhost
| + | |
− | (when asked for password just hit enter)
| + | |
| | | |
− | mysql> create database opensim;
| + | ''>>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<'' |
− | mysql> use opensim;
| + | |
− | mysql> create user 'opensim'@'localhost' identified by 'thePassword';
| + | |
− | mysql> grant all on *.* to 'opensim'@'localhost';
| + | |
− | mysql> quit
| + | |
| | | |
− | *note that the '''grant all''' command may differ if you're adding the opensim database to an existing mysql installation.
| + | On more recent mono versions Release configuration may give some performance gain, but you do lose some debug capabilities. |
| + | to compile Release configuration: |
| + | xbuild /p:Configuration=Release |
| | | |
− | On current builds set the connection string inside bin/OpenSim.ini after coppying the OpenSim.ini.example file.
| + | ==== Compile with msbuild ==== |
− | If you are changing to MySQL from SQLite, the connection string for mysql also exists in the bin/Region/*xml files.
| + | For Opensim 0.9.1 you can still use xbuild but Mono recommends the use of msbuild. You might need to install the package msbuild in addition to mono-complete for that. (Currently msbuild is included if you install mono-complete, on Ubuntu, from the official mono repositories. https://www.mono-project.com/download/stable/#download-lin ) |
− | * It is '''important''' to remember this if you start out using the built-in SQLite database engine.
| + | |
| | | |
− | Build after installation of above in bash terminal. I save it in /opt
| + | Use xbuild on the other cases as a last resort. |
| | | |
− | su -
| + | Recent improvements, specially on JIT runtime, justify compiling in Release configuration, but you do lose some debug capabilities. |
− | cd /opt
| + | |
− | [[Download]] opensim
| + | |
− | cd opensim
| + | |
− | ./runprebuild.sh
| + | |
− | nant
| + | |
| | | |
− | Or, if you have a current (0.6+), you can simply execute:
| + | to compile with Debug configuration: |
| + | msbuild |
| | | |
− | make
| + | to compile with Release configuration: |
| + | msbuild /p:Configuration=Release |
| | | |
− | After this you should be able to continue on starting the diffrent Servers, look in the mysql-config section,or
| + | to compile with the debug configuration and detailed opensim.log file can then be read with a text editor: |
− | just run your OpenSim as a Standalone.
| + | msbuild /p:Configuration=Debug /fileLogger /flp:logfile=opensim.log /v:d |
| | | |
− | == FreeBSD ==
| + | you can specify the following values for the level of detail of the opensim.log file: |
| + | q [quiet], m [minimal], n [normal], d [detailed] and diag [diagnostic]. |
| | | |
− | On FreeBSD 6.2,
| + | To compile for .Net Framework 4.8 with mono >=6.12. you can run runprebuild48.sh instead of runprebuild.sh above. Not much gain doing that, if any. |
| | | |
− | su
| + | == Ahead of Time compilation (AOT)== |
− | cd /usr/ports/devel/subversion/ && make install clean (you may also need to rebuild apr-svn if this step fails)
| + | As you all know the files *.exe and .dll created by the compiling process above do no contain native code for the machine.<br> |
− | cd /usr/ports/lang/mono/ && make install clean
| + | With those files, the native code required by the cpu is created at runtime, as needed, in a process known as Just in Time (JIT)<br> |
− | cd /usr/ports/devel/nant/ && make install clean
| + | It is possible to do another compile stage on those files to create native code, that will ready when the program starts. This is the Ahead of time process (AOT).<br> |
− | cd /usr/ports/databases/sqlite3/ && make install clean
| + | Since JIT is done at runtime, it has limited time to do extensive code optimizations, AOT on the other hand can do all.<br> |
− | cd /usr/ports/x11-toolkits/libgdiplus/ && make install clean
| + | AOT should this way be faster to load, save some the memory needed by JIT work, and reduce latency due to code generation when a new code section is needed.<br> |
− | cd /opensim/installation/directory/
| + | This way AOT helps reduce the huge performance gap between C# and a more proper language like C++, even considering JIT can do some optimization dependent on current code execution state, that AOT can't. (if you think c# is as fast as competent c++ code, better change what you are smoking...)<br> |
− | [[Download]] opensim
| + | In fact both .net and mono do AOT on their components during install<br> |
− | cd opensim
| + | JIT will still be active, compiling some other code at run time. OpenSim and used .net/mono framework parts depend on it.<br> |
− | ./runprebuild.sh
| + | |
− | nant
| + | |
| | | |
− | Note: [[Troubleshooting#System.DllNotFoundException:_..2Flibopenjpeg-libsl-2.1.2.0.so|Follow the instructions on the FAQ to fix the]]
| + | For Linux, 0.9.2.0 now includes scripts makeaot.sh and cleanaot.sh to help testing AOT.<br> |
− | "System.DllNotFoundException: ./libopenjpeg-libsl-2.1.2.0.so" issue, but use "gmake" instead of "make"
| + | Run makeaot.sh after the compile stage above, to generate the native code files. The option -O=all must be added to mono when executing opensim.exe, ex:<br> |
| + | mono --desktop -O=all OpenSim.exe |
| + | Script cleanaot.sh removes the binary files used by AOT. You must run it if you recompile the code (to be safe even if running makeaot).<br> |
| + | <b>DO NOT FORGET to run makeaot.sh or cleanaot.sh after recompile!</b><br> |
| + | The generated files are specific for that machine. <b>Do not copy the native code files to other machine, unless it is absolutely identical</b><br> |
| + | The original .exe and .dll are still needed<br> |
| | | |
− | For ODE Physics you must do the following:
| + | AOT is also possible in windows, but using different tools, and those add things to central repository on the machine, harder to isolate and maintain. see [https://docs.microsoft.com/en-us/dotnet/framework/tools/ngen-exe-native-image-generator ngen]<br> |
− | cd /usr/ports/graphics/libGL/ && make install clean
| + | |
− | cd /usr/ports/graphics/libGLU/ && make install clean
| + | |
− | cd /opensim/installation/directory/
| + | |
− | svn co http://opensimulator.org/svn/opensim-libs/trunk opensim-libs
| + | |
− | cd opensim-libs/unmanaged/OpenDynamicsEngine2/
| + | |
− | sh autogen.sh
| + | |
− | ./configure --enable-shared --enable-release --disable-demos
| + | |
− | make
| + | |
− | mv ./ode/src/.libs/libode.so /opensim/installation/directory/opensim/bin/
| + | |
| | | |
− | == Debian ==
| + | Macs are.. Macs.. Future models may totally forbid JIT, like Apple mobile products do. Mono AOT on current Macs may work as on Linux<br> |
| | | |
− | === Debian 4 ===
| + | In practical use, don't expect much more than a bit faster loading.<br> |
| + | Additionally, since compilation is different, it may add new issues. So test with care<br> |
| + | Opensim performance issues are mostly on its own code, terrible bad communications protocols, use of bad .net/mono framework code (demo quality in same cases), etc.<br> |
| + | And of course eternally broken GC<br> |
| + | But... well every ns counts..<br> |
| | | |
− | For detailed instructions please see [[Debian 4 Build Instructions]]
| + | = Configuration = |
− | | + | |
− | === Debian 5 === | + | |
− | | + | |
− | 1. Install Debian in the usual way. In the package list choose just the last option - 'Standard system' Leave all other install options unchecked unless you have other reason to install them.
| + | |
− | | + | |
− | 2. Log in as your root user make sure it works.
| + | |
− | | + | |
− | 3. type: aptitude update (or apt-get update)
| + | |
− | | + | |
− | 4. type: aptitude install nant and answer 'y' to 'Do you want to continue'- This will install nant and all of its dependancies.
| + | |
− | | + | |
− | 5. type: apt-get install git-core and answer 'y' to 'Do you want to continue'.
| + | |
− | | + | |
− | 6. type: aptitude install build-essential swig autoconf gawk mono-common binfmt-support bison libglib2.0-dev gettext and answer 'y' to 'Do you want to continue'
| + | |
− | | + | |
− | 7. type: wget http://ftp.novell.com/pub/mono/sources/mono/mono-2.4.3.tar.bz2 to download mono
| + | |
− | | + | |
− | 8. type: tar xf mono-2.4.3.tar.bz2 to extract the mono source code to a directory (substitute the latest build)
| + | |
− | | + | |
− | 9. type: cd mono-2.4.3 to change int the directory you just created
| + | |
− | | + | |
− | 10. type: ./configure --with-libgdiplus=yes - wait for it to finish
| + | |
− | | + | |
− | 11. type: make - and wait some more as this takes a bit - moreso on older machines
| + | |
− | | + | |
− | 12. type: make install
| + | |
− | | + | |
− | 13. type: cd /
| + | |
− | | + | |
− | 14 type: git clone git://opensimulator.org/git/opensim
| + | |
− | | + | |
− | 15 type: cd opensim
| + | |
− | | + | |
− | 16. type: git checkout -b 0.6.8-post-fixes origin/0.6.8-post-fixes (substitute the latest build)
| + | |
− | | + | |
− | 17. type: git pull
| + | |
− | | + | |
− | 18. type: apt-get -u upgrade and answer 'y' to 'do you want to continue?'. This will update all packages to their latest versions via apt (it will not upgrade opensim or mono as they were compiled seperately)
| + | |
− | | + | |
− | 19. Reboot, just to make sure it all comes up cleanly (type: shutdown -r now)
| + | |
− | | + | |
− | 20. Login, type: cd /
| + | |
− | | + | |
− | 21. type: cd opensim
| + | |
− | | + | |
− | 22. type: ./runprebuild.sh
| + | |
− | | + | |
− | 23 type: nant - wait for this to finish
| + | |
− | | + | |
− | 24. type: cd bin
| + | |
− | | + | |
− | 25. type: cp OpenSim.ini.example OpenSim.ini
| + | |
− | | + | |
− | 26. type: mono OpenSim.exe
| + | |
− | | + | |
− | 27. Answer the onscreen wizard promts and Opensim will start in standalone mode.
| + | |
− | | + | |
− | To add MySql support type: apt-get install mysql-server and answer 'y' to 'Do you want to Continue'. You will be prompted for a password for the MySQL root user, enter it twice as requested. Edit OpenSim.ini to use MySql as directed elsewhere.
| + | |
− | | + | |
− | === Debian testing/unstable (will be Debian 7) ===
| + | |
− | | + | |
− | Updated 2011 April 19
| + | |
− | | + | |
− | #Get root access on a Debian/Linux machine or install a fresh copy yourself. see http://www.debian.org/ This is the most difficult and longest step in our list, but there are many resources to help you through if this is your first time.
| + | |
− | #Log in as your root user.
| + | |
− | #Check <tt>/etc/debian_version</tt> to be sure of what release you are working with, by typing: `<tt>cat /etc/debian_version</tt>'. As of this writing it should reply "<tt>wheezy/sid</tt>".
| + | |
− | #type: `<tt>apt-get update</tt>'
| + | |
− | #type: `<tt>apt-get dist-upgrade</tt>' This will upgrade all packages to their latest versions and will handle conflicts which may arise. See: `<tt>man apt-get</tt>' for more information. If you did not install from scratch this will bring the system up to date. For more information about running and maintaining a Debian system enter: `<tt>apt-get install debian-reference</tt>' and point a web browser at <tt>/usr/share/doc/debian-reference-common/html/index.en.html</tt> This is a book length document (read it later).
| + | |
− | #type: `<tt>apt-get install mono-complete nant git build-essential swig autoconf gawk binfmt-support bison gettext</tt>' and answer 'y' to 'Do you want to continue'.
| + | |
− | #Reboot, just to make sure it all comes up cleanly (type: `<tt>shutdown -r now</tt>')
| + | |
− | #Login again, type: `<tt>cd /usr/src</tt>'
| + | |
− | #type: `<tt>git clone git://opensimulator.org/git/opensim</tt>'
| + | |
− | #type: `<tt>cd opensim</tt>'
| + | |
− | #type: `<tt>git branch -r</tt>' will show you the available branches in the remote repository. You want the most recent release which will be listed as something like "<tt>origin/0.7.0.2-release</tt>"
| + | |
− | #type: `<tt>git checkout -b 0.7.0.2-release origin/0.7.0.2-release</tt>'
| + | |
− | #type: `<tt>git pull</tt>'
| + | |
− | #type: `<tt>./runprebuild.sh</tt>'
| + | |
− | #type: `<tt>nant</tt>'
| + | |
− | #type: `<tt>cd bin</tt>' to switch directories to <tt>/usr/src/opensim/bin</tt>
| + | |
− | #type: `<tt>cp OpenSim.ini.example OpenSim.ini</tt>' (The <tt>[Architecture]</tt> section is what determines if you will be running a standalone or grid server. You want the default standalone variant to get started with.)
| + | |
− | #type: `<tt>cd config-include</tt>' you are now in <tt>/usr/src/opensim/bin/config-include</tt>
| + | |
− | #type: `<tt>cp StandaloneCommon.ini.example StandaloneCommon.ini</tt>' See [[Configuration]] for more information on configuring OpenSim.
| + | |
− | #type: `<tt>cd ..</tt>' to change directories back to <tt>/usr/src/opensim/bin</tt>
| + | |
− | #type: `<tt>mono OpenSim.exe</tt>'
| + | |
− | #The startup wizard will ask you a number of questions. The defaults are fine but you can fill these in to your taste:
| + | |
− | | + | |
− | region name, estate name, owner first name, owner last name, owner password, and owner email
| + | |
− | | + | |
− | Remember the external host name and port number, you need these to construct the login URI to connect to with your client. http://hostname:portnumber/
| + | |
− | | + | |
− | Opensim will then finish starting and leave you at a prompt which looks like:
| + | |
− | | + | |
− | Region (regionName) #
| + | |
− | | + | |
− | ----
| + | |
− | | + | |
− | Where to go from here:
| + | |
− | | + | |
− | *[[Connecting]] to your server using a client.
| + | |
− | | + | |
− | *[[Upgrading]] to mySQL from mySQLite.
| + | |
− | | + | |
− | *[[Server Commands]] for creating users and controlling the system.
| + | |
− | | + | |
− | *Fix the bent knees bug: [[FAQ#Why_are_my_knees_bent_when_I_stand_idle.3F]]
| + | |
| | | |
| + | See [[Configuration]]. |
| | | |
| + | [[Category:Users]] |
| [[Category:Users]] | | [[Category:Users]] |
| [[Category:Getting Started]] | | [[Category:Getting Started]] |
This page covers building OpenSimulator from source code on multiple platforms. Please help us keep this page up to date as the project progresses. If you just want to run OpenSimulator, Download and run the binary build instead. In the most cases, you should be fine with binaries.
Although this page is long, building is generally quite simple. See the BUILDING.txt file in the distribution itself for simplified instructions.
Microsoft stopped the development of .Net Framework and Mono, replacing them by new dotnet
This is a significant breaking change that we try to follow on 0.9.3.0.
Load the generated OpenSim.sln into Visual Studio and build the solution, or just run
You may also need nant tool.
recommend compiling with msbuild.
Other platforms may have own mono distributions, or may need to compile mono on them.
Other libraries used by OpenSimulator can be found at our opensim-libs git repo:
You may need to compile them for your platform, in particular the unmanaged ones like Bullet or ODE native code libraries
For Ubuntu 22.04 LTS and higher, dotnet is available in the distribution's repos.
For Ubuntu 20.04 LTS and lower, and for all versions of Debian, add Microsoft repository to your installation :
On some mono versions, in particular old ones may need the use of nant to proper compile OpenSimulator, in that case just run:
On mono versions you can just use xbuild. (msbuild is recommended for 0.9.1.0.0+)
On more recent mono versions Release configuration may give some performance gain, but you do lose some debug capabilities.
to compile Release configuration:
For Opensim 0.9.1 you can still use xbuild but Mono recommends the use of msbuild. You might need to install the package msbuild in addition to mono-complete for that. (Currently msbuild is included if you install mono-complete, on Ubuntu, from the official mono repositories. https://www.mono-project.com/download/stable/#download-lin )
Use xbuild on the other cases as a last resort.
Recent improvements, specially on JIT runtime, justify compiling in Release configuration, but you do lose some debug capabilities.
to compile with the debug configuration and detailed opensim.log file can then be read with a text editor:
you can specify the following values for the level of detail of the opensim.log file:
To compile for .Net Framework 4.8 with mono >=6.12. you can run runprebuild48.sh instead of runprebuild.sh above. Not much gain doing that, if any.
As you all know the files *.exe and .dll created by the compiling process above do no contain native code for the machine.
With those files, the native code required by the cpu is created at runtime, as needed, in a process known as Just in Time (JIT)
It is possible to do another compile stage on those files to create native code, that will ready when the program starts. This is the Ahead of time process (AOT).
Since JIT is done at runtime, it has limited time to do extensive code optimizations, AOT on the other hand can do all.
AOT should this way be faster to load, save some the memory needed by JIT work, and reduce latency due to code generation when a new code section is needed.
This way AOT helps reduce the huge performance gap between C# and a more proper language like C++, even considering JIT can do some optimization dependent on current code execution state, that AOT can't. (if you think c# is as fast as competent c++ code, better change what you are smoking...)
In fact both .net and mono do AOT on their components during install
JIT will still be active, compiling some other code at run time. OpenSim and used .net/mono framework parts depend on it.
For Linux, 0.9.2.0 now includes scripts makeaot.sh and cleanaot.sh to help testing AOT.
Run makeaot.sh after the compile stage above, to generate the native code files. The option -O=all must be added to mono when executing opensim.exe, ex:
Script cleanaot.sh removes the binary files used by AOT. You must run it if you recompile the code (to be safe even if running makeaot).
DO NOT FORGET to run makeaot.sh or cleanaot.sh after recompile!
The generated files are specific for that machine. Do not copy the native code files to other machine, unless it is absolutely identical
The original .exe and .dll are still needed
AOT is also possible in windows, but using different tools, and those add things to central repository on the machine, harder to isolate and maintain. see ngen
Macs are.. Macs.. Future models may totally forbid JIT, like Apple mobile products do. Mono AOT on current Macs may work as on Linux
In practical use, don't expect much more than a bit faster loading.
Additionally, since compilation is different, it may add new issues. So test with care
Opensim performance issues are mostly on its own code, terrible bad communications protocols, use of bad .net/mono framework code (demo quality in same cases), etc.
And of course eternally broken GC
But... well every ns counts..