Building From Source on Ubuntu 16.04 - OpenSSL

Development
1

I can build Slicer with the option

Slicer_USE_PYTHONQT_WITH_OPENS

off

When I try to build with this on I get

[ 11%] Completed 'bzip2'
[ 12%] Built target bzip2
[ 12%] No configure step for 'OpenSSL'
/usr/bin/cmake: libssl.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libcurl.so.4)
/usr/bin/cmake: libssl.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libcurl.so.4)
/usr/bin/cmake: libssl.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libcurl.so.4)
/usr/bin/cmake: libcrypto.so.1.0.0: no version information available (required by /usr/lib/x86_64-linux-gnu/libcurl.so.4)
/usr/bin/cmake: relocation error: /usr/lib/x86_64-linux-gnu/libcurl.so.4: symbol SSL_CTX_set_alpn_protos, version OPENSSL_1.0.2 not defined in file libssl.so.1.0.0 with link time reference
CMakeFiles/OpenSSL.dir/build.make:109: recipe for target 'OpenSSL-prefix/src/OpenSSL-stamp/OpenSSL-configure' failed
make[2]: *** [OpenSSL-prefix/src/OpenSSL-stamp/OpenSSL-configure] Error 127
CMakeFiles/Makefile2:1267: recipe for target 'CMakeFiles/OpenSSL.dir/all' failed
make[1]: *** [CMakeFiles/OpenSSL.dir/all] Error 2
Makefile:94: recipe for target 'all' failed
make: *** [all] Error 2
2

As described in Slicer build instructors, you need to build Qt with OpenSSL support, or build Slicer with OpenSSL disabled.

3

I can build with Slicer disabled no problem. I want to use pip so I need SSL.

I tried using

and pointing CMake to the qmake of the resulting build with openssl but I get the same error

4

@jcfr Is qt-easy-build supposed to work on Ubuntu 16.04?

@codey, which Qt version did you try to build? On the dashboard Qt 5.9.1 shows up in green for Linux.

5

I am using version 4.8.7

6

Maybe while waiting for @jcfr to get back to us, you can try building with Qt5 and VTK8.

7

I haven’t tried to build using Ubuntu 16.04 … that said I will soon update my workstation to use it.

qt-easy-build dashboard

The testing for Qt 4.8.7 needs some work, I will look into it.

8

I’ve tried installing QT5.9.1 from the Qt’s runfile with VTK8 but I get
an error when building Slicer

/Data-work/BuildDirs/Slicer/Modules/Loadable/Tables/Widgets/Testing/Cxx/qSlicerTableColumnPropertiesWidgetTest1.cxx: 
In function ‘int qSlicerTableColumnPropertiesWidgetTest1(int, char**)’:
/Data-work/BuildDirs/Slicer/Modules/Loadable/Tables/Widgets/Testing/Cxx/qSlicerTableColumnPropertiesWidgetTest1.cxx:46:3: 
error: ‘QSurfaceFormat’ was not declared in this scope
    QSurfaceFormat format = QVTKOpenGLWidget::defaultFormat();

I didn’t think you could build it with QT5 from reading the build
instructions. I’ll try using QT4 with the runfile installation.

9

Note that you can use Qt 4.8.7 from the system package manager:

sudo apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui libqtwebkit-dev

https://www.slicer.org/wiki/Documentation/Nightly/Developers/Build_Instructions#Qt

10

I’ve got a successful build with this. Thanks

11

I am not sure how I managed to get Slicer built. I am trying to build on
another Ubuntu 16.04 and I have run into the same issues.

/usr/bin/cmake: relocation error: 
/usr/lib/x86_64-linux-gnu/libcurl.so.4: symbol SSL_CTX_set_alpn_protos, 
version OPENSSL_1.0.2 not defined in file libssl.so.1.0.0 with link time 
reference
CMakeFiles/OpenSSL.dir/build.make:109: recipe for target 
'OpenSSL-prefix/src/OpenSSL-stamp/OpenSSL-configure' failed
make[2]: *** [OpenSSL-prefix/src/OpenSSL-stamp/OpenSSL-configure] Error 127
CMakeFiles/Makefile2:1267: recipe for target 
'CMakeFiles/OpenSSL.dir/all' failed
make[1]: *** [CMakeFiles/OpenSSL.dir/all] Error 2
Makefile:94: recipe for target 'all' failed
make: *** [all] Error 2

The choices of openssl are set in the cmake file

set_property(CACHE OPENSSL_DOWNLOAD_VERSION PROPERTY STRINGS “1.0.1e”
“1.0.1l”)

I think they might not be compatible with the openssl I have installed.
I posted this on AskUbuntu here

One comment says,

OpenSSL 1.0.x built from source does not include versioned symbols.
However the Ubuntu supplied OpenSSL has a patch which does include
versioned symbols. The error message above mentions a symbol version
(OPENSSL_1.0.2) so there is some confusion between the two OpenSSL
versions (i.e. the system installed version and the one downloaded and
built from source)