Documentation/Nightly/Developers/Build Instructions

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CHECKOUT slicer source files


Check out the code using git:

  1. While it is not enforced, we strongly recommend you to AVOID the use of SPACES for both the source directory and the build directory. We mean it.
  1. Due to maximum path length limitations during build the build process, source and build folders must be located in a folder with very short total path length. This is expecially critical on Windows and MacOS. For example, C:\D\S4 for source and C:\D\S4R for release-mode build folder works on Windows; and /sq5 has been confirmed to work on MacOS.

  1. Clone the github repository

    cd MyProjects
git clone git://github.com/Slicer/Slicer.git

    The Slicer directory is automatically created after cloning Slicer.

  2. Setup the development environment:

    cd Slicer
./Utilities/SetupForDevelopment.sh

    For more details see Development With Git.

    On Windows enter the commands above in to a bash shell, such as Git Bash (part of msysgit) or use a Git client with a graphical user interface.







CONFIGURE and generate Slicer solution files

There are many ways of customizing Slicer's user interface or feature set. This section describes how a custom Slicer build can be configured at build-time. See an overview of various other options in this presentation.

You can configure and generate Slicer solution files using either ccmake or cmake-gui. To streamline this process, you can also use the SlicerCustomAppTemplate project maintained by Kitware.

Customizing application build

Customized editions of Slicer can be generated without changing Slicer source code, just by modifying CMake variables:

  • SlicerApp_APPLICATION_NAME: Custom application name to be used, instead of default "Slicer". The name is used in installation package name, window title bar, etc.
  • Slicer_DISCLAIMER_AT_STARTUP: String that is displayed to the user after first startup of Slicer after installation (disclaimer, welcome message, etc).
  • Slicer_DEFAULT_HOME_MODULE: Module name that is activated automatically on application start.
  • Slicer_DEFAULT_FAVORITE_MODULES: Modules that will be added to the toolbar by default for easy access. List contains module names, separated by space character.
  • Slicer_CLIMODULES_DISABLED: Built-in CLI modules that will be removed from the application. List contains module names, separated by semicolon character.
  • Slicer_QTLOADABLEMODULES_DISABLED: Built-in Qt loadable modules that will be removed from the application. List contains module names, separated by semicolon character.
  • Slicer_QTSCRIPTEDMODULES_DISABLED: Built-in scripted loadable modules that will be removed from the application. List contains module names, separated by semicolon character.
  • Slicer_USE_PYTHONQT_WITH_OPENSSL: enable/disable building the application with SSL support (ON/OFF)
  • Slicer_USE_SimpleITK: enable/disable SimpleITK support (ON/OFF)
  • Slicer_BUILD_SimpleFilters: enable/disable building SimpleFilters. Requires SimpleITK. (ON/OFF)
  • Slicer_BUILD_EMSegment: enable/disable building EM segmenter (ON/OFF)
  • Slicer_USE_PYTHONQT_WITH_TCL: TCL support (ON/OFF)
  • Slicer_EXTENSION_SOURCE_DIRS: Defines additional extensions that will be included in the application package as built-in modules. Full paths of extension source directories has to be specified, separated by semicolons.

Per-platform instructions

Windows

Recommended: run CMake (cmake-gui) from the Windows Start menu

  • Set the build directory. Use a very short path, for example: C:\D\S4 for source code and for C:\D\S4D build directory are known to work.
    • Because Windows doesn't support file path longer than 260 characters and has a maximum command line length, it is strongly recommended to choose a build directory that is no longer than 10 characters. If a longer path is used then build may or may not succeed.
    • You cannot use the same build tree for both release or debug mode builds. If both build types are needed, then the same source directory can be used, but a separate build directory should be created and configured for each build type.
  • Select your compiler: Visual Studio 16 2019 Win64
  • Do not configure yet.
  • Add Qt5_DIR variable pointing to Qt5 folder such as C:\Qt\5.15.0\msvc2019_64\lib\cmake\Qt5: click Add entry button, set Name to Qt5_DIR, Type to PATH, and Value to the Qt5 folder.
  • Configure
  • Click generate then close cmake-gui.
  • If building in release mode:
    • Open the top-level Slicer.sln file in the build directory in Visual Studio
    • Set active configuration to Release. Visual Studio will select Debug build configuration by default when you first open the solution in the Visual Studio GUI. If you build Slicer in release mode and accidentally forget to switch the build configuration to Release then the build will fail. Note: you can avoid this manual configuration mode selection by setting CMAKE_CONFIGURATION_TYPES to Release in cmake-gui.
  • If building in debug mode:
  • Build the ALL_BUILD project

Alternative option: Configure and build using command-line or batch file

Instead of using CMake (cmake-gui), it is also possible to configure by creating a .bat file that contains command-line instructions and run this .bat file each time a Slicer needs to be re-built. The examples below assume Slicer source code is in C:\D\S4 folder and Qt-5.10 is installed in default location.

Visual Studio 2015 in Release mode: 

mkdir C:\D\S4R
cd /d C:\D\S4R
"C:\Program Files\CMake\bin\cmake.exe" -G "Visual Studio 16 2019 Win64" -DQt5_DIR:PATH=C:\Qt\5.15.0\msvc2019_64\lib\cmake\Qt5 C:\D\S4
"C:\Program Files\CMake\bin\cmake.exe" --build . --config Release

Visual Studio 2015 in Debug mode: 

mkdir C:\D\S4D
cd /d C:\D\S4D
"C:\Program Files\CMake\bin\cmake.exe" -G "Visual Studio 16 2019 Win64" -DQt5_DIR:PATH=C:\Qt\5.15.0\msvc2019_64\lib\cmake\Qt5 C:\D\S4
"C:\Program Files\CMake\bin\cmake.exe" --build . --config Debug

Visual Studio 2019 with VS2015 toolset in Release mode: 

mkdir C:\D\S4R
cd /d C:\D\S4R
"C:\Program Files\CMake\bin\cmake.exe" -G "Visual Studio 16 2019 Win64" -T "v140" -DQt5_DIR:PATH=C:\Qt\5.10.0\msvc2015_64\lib\cmake\Qt5 C:\D\S4
"C:\Program Files\CMake\bin\cmake.exe" --build . --config Release

Unix-like

  • Recommended:
    • Configure using the following commands. By default CMAKE_BUILD_TYPE is set to Debug.
mkdir Slicer-SuperBuild-Debug
cd Slicer-SuperBuild-Debug
cmake -DCMAKE_BUILD_TYPE:STRING=Debug -DQt5_DIR:PATH=/path/to/Qt5.15.0/5.15.0/gcc_64/lib/cmake/Qt5 ../Slicer

where you replace /path/to/QtSDK with the real path on your machine where QtSDK is located

If using Qt from the system, do not forget to add the following CMake variable to your configuration command line: 

-DSlicer_USE_SYSTEM_QT:BOOL=1
  • Remarks:
  1. Instead of cmake, you can use ccmake or cmake-gui to visually inspect and edit configure options.
  2. Using top-level directory name like Slicer-SuperBuild-Release or Slicer-SuperBuild-Debug is recommended.
  3. Step-by-step debug instuctions
  • On Mac OS X 10.9 (Mavericks) / 10.10 (Yosemite) / 10.11 (El Capitan), also set the following variables (see discussion):
Variable Description
Slicer_USE_PYTHONQT_WITH_TCL OFF
CMAKE_OSX_DEPLOYMENT_TARGET 10.9 or 10.10 or 10.11

General information

Two projects are generated by either cmake, ccmake or cmake-gui.

One of them is in the top-level bin directory Slicer-SuperBuild and the other one is in the subdirectory Slicer-build: 

Slicer-SuperBuild/Slicer-build
  1. The first project in Slicer-SuperBuild manages all the external dependencies of Slicer (VTK, ITK, Python, ...). To build Slicer for the first time, run make (or build the solution file in Visual Studio) in Slicer-SuperBuild, which will update and build the external libraries and if successful will then build the subproject Slicer-build.
  2. The second project in Slicer-SuperBuild/Slicer-build is the "traditional" build directory of Slicer. After local changes in Slicer (or after an svn update on the source directory of Slicer), only running make (or building the solution file in Visual Studio) in Slicer-SuperBuild/Slicer-build is necessary (the external libraries are considered built and up to date).
  3. Warning: An significant amount of disk space is required to compile Slicer in Debug (>10GB on Windows)

Workaround for if the firewall is blocking git protocol

  • Some firewalls will block the git protocol. A possible workaround is to configure Slicer by disabling the option Slicer_USE_GIT_PROTOCOL. Then the http protocol will be used instead. Consider also reading https://github.com/commontk/CTK/issues/33






BUILD Slicer

After configuration, start the build process in the Slicer-SuperBuild directory

Linux or MacOSX (Makefile) Windows (Visual Studio)

Start a terminal. 

$ cd ~/Projects/Slicer-SuperBuild

$ make -j<NUMBEROFCORES>

In case of file download hash mismatch error, you need to acquire the latest wget, and build cmake with OpenSSL turned on. For more information, see here and here

When using the -j option, the build will continue past the source of the first error. If the build fails and you don't see what failed, rebuild without the -j option. Or, to speed up this process build first with the -j and -k options and then run plain make. The -k option will make the build keep going so that any code that can be compiled independent of the error will be completed and the second make will reach the error condition more efficiently.

Start Windows Explorer. Need help?

  1. Open Slicer-SuperBuild\Slicer.sln in Visual Studio
  2. Select build configuration. Usually Release or Debug
  3. Select menu Project -> Build Solution

If you make local changes to Slicer, open the solution file located in the directory Slicer-SuperBuild/Slicer-build instead. You should then be able to either build all projects or just a specific one.





RUN Slicer

Per-platform instructions

Windows

Run Slicer4-SuperBuild/Slicer-build/Slicer.exe

Unix-like

Run Slicer4-SuperBuild/Slicer-build/Slicer





DEBUG Slicer

Per-platform instructions

Windows

  • Make sure you build Slicer using the Debug configuration.
  • Open a windows terminal cmd.exe
  • Execute the following command:
 cd \path\to\Slicer4-SuperBuild\Slicer-build
 Slicer.exe --VisualStudio Slicer.sln

Unix-like

NA





Common errors

A tool returned an error code from "Generating vtksysProcessFwd9xEnc.c"

The application has failed to start because its side-by-side configuration is incorrect.
Please see the application event log or use the command-line sxstrace.exe tool for more detail.
Project : error PRJ0019: A tool returned an error code from "Generating
vtksysProcessFwd9xEnc.c"

Install SP1 of Visual Studio

error: ‘class QList<QString>’ has no member named ‘reserve’

/nfs/Users/blowekamp/QtSDK/Desktop/Qt/474/gcc/include/QtCore/qdatastream.h: In function ‘QDataStream& operator>>(QDataStream&, QList<T>&) [with T = QString]’:
/nfs/Users/blowekamp/QtSDK/Desktop/Qt/474/gcc/include/QtCore/qstringlist.h:247:   instantiated from here
/nfs/Users/blowekamp/QtSDK/Desktop/Qt/474/gcc/include/QtCore/qdatastream.h:246: error: ‘class QList<QString>’ has no member named ‘reserve’

You have multiple Qt versions installed on your machine. Try removing the Qt version installed on the system.

libarchive.so: undefined reference to `SHA256_Update'

Linking CXX executable ../../../../../bin/MRMLLogicCxxTests
/home/benjaminlong/work/slicer/Slicer4-Superbuild-Debug/LibArchive-install/lib/libarchive.so: undefined reference to `SHA256_Update'
/home/benjaminlong/work/slicer/Slicer4-Superbuild-Debug/LibArchive-install/lib/libarchive.so: undefined reference to `SHA256_Final'
/home/benjaminlong/work/slicer/Slicer4-Superbuild-Debug/LibArchive-install/lib/libarchive.so: undefined reference to `SHA256_Init'
/home/benjaminlong/work/slicer/Slicer4-Superbuild-Debug/LibArchive-install/lib/libarchive.so: undefined reference to `MD5_Init'

Solution: 

cd Slicer-superbuild
rm -rf LibArchive-*
make -j4

Details:

A tool returned an error code from "Performing configure step for ..."

CMake has some problems building complex projects on Windows7. See more details in: http://cmake.org/Bug/view.php?id=12957

A fix has been already identified and soon will be available in an official CMake release (probably 2.8.8). Until then this unofficial version can be used (based on CMake-2.8.7): https://qshare.queensu.ca/Users01/lasso/public/cmake-2.8.7.12957-win32-x86.exe

A tool returned an error code from "Performing download step (git clone) for ..."

CMake has problems cloning git repositories on Windows7. See more details in http://cmake.org/Bug/view.php?id=12564

If you think the described problem is the same as you have, please add your specific error message to the bug report (the more people report the problem the sooner it will be fixed).

No rule to make target `/usr/lib/x86_64-linux-gnu/libGL.so'

See http://techtidings.blogspot.com/2012/01/problem-with-libglso-on-64-bit-ubuntu.html

X11 Window errors at start time

X Error: BadWindow (invalid Window parameter) 3
  Extension:    137 (Uknown extension)
  Minor opcode: 4 (Unknown request)
  Resource id:  0x4200199
X Error: BadWindow (invalid Window parameter) 3
  Extension:    137 (Uknown extension)
  Minor opcode: 4 (Unknown request)
  Resource id:  0x42001a6
X Error: BadWindow (invalid Window parameter) 3
  Extension:    137 (Uknown extension)
  Minor opcode: 4 (Unknown request)
  Resource id:  0x42001b3

Solution:

  • Reinstall Nvidia drivers (that also rewrite the xorg.conf file).

error C2061: syntax error : identifier 'ssize_t'

4>1>Compiling...
4>1>version.c
4>1>c:\chene\winbin64\slicer4\cmcurl\urldata.h(585) : error C2061: syntax error : identifier 'ssize_t'
4>1>c:\chene\winbin64\slicer4\cmcurl\urldata.h(593) : error C2365: 'fread' : redefinition; previous definition was 'function'
4>1>        C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\stdio.h(248) : see declaration of 'fread'
4>1>c:\chene\winbin64\slicer4\cmcurl\urldata.h(610) : error C2059: syntax error : '}'

Solution:

ld: framework not found QtWebKit

[...]
Linking CXX shared library libPythonQt.dylib
ld: framework not found QtWebKit
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[8]: *** [libPythonQt.dylib] Error 1
[...]

See Slicer issue #2860

Workaround:

Solution:

On MacOSX 10.8, cmake hangs forever

As a follow up, building on MacOSX should work out of the box using the specific version of CMake discussed on the mailing list [1] and also reported on the wiki [2]

[1] http://slicer-devel.65872.n3.nabble.com/How-to-build-Slicer-on-10-8-tp4027602p4027604.html [^] [2] http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Developers/Build_Instructions#MacOSX [^]


All that said, CMake folks (Thanks Brad King :)) just fixed an issue that was preventing the most recent nightly from being used to successfully compile Slicer. The fix has been tested and is known to work. Tomorrow nightly build of CMake and by extension the coming release of CMake 2.8.11 will work.

If you are curious about the details, check the commit message: 

http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=1df09e57 [^]

The associated CMake test have also been updated: 

http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=bff3d9ce [^]






Platform Notes

  • Linux Ubuntu: if you have odd rendering artifacts, try disabling visual effects (System/Appearance/Visual Effects)
  • Linux Ubuntu 12.04: if the QtSdk installation hangs, please try this solution
  • Windows: If build was OK, but it Slicer doesn't start (gives the error: [bin/Release/SlicerQT-real.exe] exit abnormally - Report the problem.) then one possible root cause is that you have a copy of Python26.dll in your windows system directory (e.g., c:\Windows\System32\python26.dll). The solution is to rename or remove the python dll in the system directory. See more details here: http://www.na-mic.org/Bug/view.php?id=1180

Quick Build on Debian

sudo aptitude update
sudo aptitude install subversion git gcc g++ make cmake-curses-gui libqt4-dev
svn co http://svn.slicer.org/Slicer4/trunk Slicer4
mkdir Slicer4-SuperBuild-Debug
cd Slicer4-SuperBuild-Debug
cmake ../Slicer4
make -j5

# runtime dependency:
sudo aptitude install python-tk
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