Qt5 UnsatisfiedLinkError

[kholme2]

I'm trying to run the GettingStarted Qt sample (https://github.com/bytedeco/javacpp-presets/tree/master/qt) on Windows using version 1.5.2.

I'm able to build with maven but get the following error when running:

Exception` in thread "main" java.lang.UnsatisfiedLinkError: no jniQt5Core in java.library.path: [C:\Users\kholme\Downloads\openjdk-14_windows-x64_bin\jdk-14\bin, C:\WINDOWS\Sun\Java\bin, C:\WINDOWS\system32, C:\WINDOWS, D:\Program Files (x86)\Git\bin, D:\Program Files\nodejs, D:\Program Files\Microsoft HPC Pack 2012\Bin, C:\ProgramData\Oracle\Java\javapath, C:\Program Files\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\Common Files\Microsoft Shared\Microsoft Online Services, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\WINDOWS\System32\WindowsPowerShell\v1.0, C:\Program Files\Intel\WiFi\bin, C:\Program Files\Common Files\Intel\WirelessCommon, C:\Program Files\Microsoft\Web Platform Installer, C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0, C:\Program Files\Microsoft SQL Server\110\Tools\Binn, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinMerge, C:\Program Files\Microsoft Windows Performance Toolkit, D:\arcanist\arcanist\bin, C:\Users\kholme\Desktop\ArcanistSetup\php-5.6.6-nts-Win32-VC11-x64, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE, C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinSCP, D:\Anaconda, D:\Anaconda\Scripts, D:\Program Files (x86)\Git\bin, D:\arcanist\arcanist\src\lint\linter, D:\Anaconda\Lib\site-packages\robot, C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE, C:\Program Files (x86)\Windows Live\Shared, C:\Program Files\Windows Imaging, C:\WINDOWS\System32\OpenSSH, C:\Program Files\dotnet, C:\jython2.7.1\bin, C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\WINDOWS\System32\WindowsPowerShell\v1.0, C:\WINDOWS\System32\OpenSSH, C:\Program Files\PuTTY, C:\Program Files\Docker\Docker\resources\bin, C:\ProgramData\DockerDesktop\version-bin, C:\Users\kholme\Downloads\apache-maven-3.6.3-bin\apache-maven-3.6.3\bin, C:\ThirdWaveSystems\AdvantEdge\advanttec\bin, C:\ThirdWaveSystems\AdvantEdge\advantpre\Lib\DLL, C:\ThirdWaveSystems\AdvantEdge\advantpre\Lib\jar, C:\ProgramData\Oracle\Java\javapath, C:\Program Files\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common, C:\Windows\system32, C:\Windows, C:\Windows\System32\Wbem, C:\Windows\System32\WindowsPowerShell\v1.0, C:\Program Files\Intel\WiFi\bin, C:\Program Files\Common Files\Intel\WirelessCommon, C:\Program Files\Microsoft\Web Platform Installer, C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0, C:\Program Files (x86)\Windows Kits\8.0\Windows Performance Toolkit, C:\Program Files\Microsoft SQL Server\110\Tools\Binn, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinMerge, D:\Program Files\TortoiseSVN\bin, D:\Perl\bin, C:\Program Files\Microsoft Windows Performance Toolkit, D:\Program Files (x86)\Git, C:\Users\kholme\AppData\Local\Microsoft\WindowsApps, ., D:\Users\kholme\AppData\Local\Programs\Fiddler, C:\Users\kholme\AppData\Roaming\npm, .]

at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2680)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:807)
at java.base/java.lang.System.loadLibrary(System.java:1907)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1543)
at org.bytedeco.javacpp.Loader.load(Loader.java:1192)
at org.bytedeco.javacpp.Loader.load(Loader.java:1058)
at org.bytedeco.qt.helper.Qt5Core.(Qt5Core.java:40)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:427)
at org.bytedeco.javacpp.Loader.load(Loader.java:1109)
at org.bytedeco.javacpp.Loader.load(Loader.java:1058)
at GettingStarted.main(GettingStarted.java:25)
Caused by: java.lang.UnsatisfiedLinkError: no Qt5Core in java.library.path: [C:\Users\kholme\Downloads\openjdk-14_windows-x64_bin\jdk-14\bin, C:\WINDOWS\Sun\Java\bin, C:\WINDOWS\system32, C:\WINDOWS, D:\Program Files (x86)\Git\bin, D:\Program Files\nodejs, D:\Program Files\Microsoft HPC Pack 2012\Bin, C:\ProgramData\Oracle\Java\javapath, C:\Program Files\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\Common Files\Microsoft Shared\Microsoft Online Services, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\WINDOWS\System32\WindowsPowerShell\v1.0, C:\Program Files\Intel\WiFi\bin, C:\Program Files\Common Files\Intel\WirelessCommon, C:\Program Files\Microsoft\Web Platform Installer, C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0, C:\Program Files\Microsoft SQL Server\110\Tools\Binn, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinMerge, C:\Program Files\Microsoft Windows Performance Toolkit, D:\arcanist\arcanist\bin, C:\Users\kholme\Desktop\ArcanistSetup\php-5.6.6-nts-Win32-VC11-x64, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE, C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinSCP, D:\Anaconda, D:\Anaconda\Scripts, D:\Program Files (x86)\Git\bin, D:\arcanist\arcanist\src\lint\linter, D:\Anaconda\Lib\site-packages\robot, C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE, C:\Program Files (x86)\Windows Live\Shared, C:\Program Files\Windows Imaging, C:\WINDOWS\System32\OpenSSH, C:\Program Files\dotnet, C:\jython2.7.1\bin, C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\WINDOWS\System32\WindowsPowerShell\v1.0, C:\WINDOWS\System32\OpenSSH, C:\Program Files\PuTTY, C:\Program Files\Docker\Docker\resources\bin, C:\ProgramData\DockerDesktop\version-bin, C:\Users\kholme\Downloads\apache-maven-3.6.3-bin\apache-maven-3.6.3\bin, C:\ThirdWaveSystems\AdvantEdge\advanttec\bin, C:\ThirdWaveSystems\AdvantEdge\advantpre\Lib\DLL, C:\ThirdWaveSystems\AdvantEdge\advantpre\Lib\jar, C:\ProgramData\Oracle\Java\javapath, C:\Program Files\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\Common Files\Microsoft Shared\Microsoft Online Services, C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common, C:\Windows\system32, C:\Windows, C:\Windows\System32\Wbem, C:\Windows\System32\WindowsPowerShell\v1.0, C:\Program Files\Intel\WiFi\bin, C:\Program Files\Common Files\Intel\WirelessCommon, C:\Program Files\Microsoft\Web Platform Installer, C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0, C:\Program Files (x86)\Windows Kits\8.0\Windows Performance Toolkit, C:\Program Files\Microsoft SQL Server\110\Tools\Binn, C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\Tools\Binn, C:\Program Files\Microsoft SQL Server\100\DTS\Binn, C:\Program Files (x86)\WinMerge, D:\Program Files\TortoiseSVN\bin, D:\Perl\bin, C:\Program Files\Microsoft Windows Performance Toolkit, D:\Program Files (x86)\Git, C:\Users\kholme\AppData\Local\Microsoft\WindowsApps, ., D:\Users\kholme\AppData\Local\Programs\Fiddler, C:\Users\kholme\AppData\Roaming\npm, .]
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2680)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:807)
at java.base/java.lang.System.loadLibrary(System.java:1907)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1543)
at org.bytedeco.javacpp.Loader.load(Loader.java:1143)
... 7 more

I also get a NullPointerException when trying to use the Dependency tool as described in the wiki, https://github.com/bytedeco/javacpp-presets/wiki/Debugging-UnsatisfiedLinkError-on-Windows.

Have I done something wrong with my configuration? Is the javacpp qt supported for Windows?

[saudet]

No, there's no builds for Windows yet, but contributions are welcome!

[saudet]

/cc @freastro

[freastro]

I'm no longer using the project and I don't remember if I had it working on Windows or only on macOS. The issue appears to be that Qt5Core isn't in your path. Please ensure that you have Qt5 installed and that the dlls are added to your java.library.path (is this the same as the PATH environment variable).

[CircuitRCAY]

I also get the same error, the problem is that the file jniQt5Core.dll does not exist / is missing.

[freastro]

The jniQt5Core.dll file should be built by JavaCPP during the Maven build. I was using Oracle JDK 1.8 and Qt 5.12. It's probable that some changes are necessary if you want to use a later JDK.

[saudet]

Binaries for Windows are now available!
Please give it a try with the snapshots:
http://bytedeco.org/builds/

[saudet]

Binaries for Qt on Windows have released with version 1.5.4. Enjoy!