Default CUDA library name is incorrect for linux

[DJtheRedstoner]

Version

3.3.2

Platform

Linux x64

JDK

openjdk version "17.0.6" (Ubuntu package)

Module

CUDA

Bug description

The default library name for CUDA is set to nvcuda, which is correct for Windows but on Linux the library name is just cuda.

lwjgl3/modules/lwjgl/cuda/src/generated/java/org/lwjgl/cuda/CU.java

Line 34 in 5ed7786

private static final SharedLibrary NVCUDA = Library.loadNative(CU.class, "org.lwjgl.cuda", Configuration.CUDA_LIBRARY_NAME, "nvcuda");

Setting -Dorg.lwjgl.cuda.libname=cuda fixes this problem.

Stacktrace or crash log output

[LWJGL] Failed to load a library. Possible solutions:
	a) Install the library or the driver that provides the library.
	b) Ensure that the library is accessible from the system library paths.
[LWJGL] Enable debug mode with -Dorg.lwjgl.util.Debug=true for better diagnostics.
[LWJGL] Enable the SharedLibraryLoader debug mode with -Dorg.lwjgl.util.DebugLoader=true for better diagnostics.
Exception in thread "main" java.lang.UnsatisfiedLinkError: Failed to locate library: libnvcuda.so
	at org.lwjgl.system.Library.loadNative(Library.java:346)
	at org.lwjgl.system.Library.loadNative(Library.java:236)
	at org.lwjgl.system.Library.loadNative(Library.java:217)
	at org.lwjgl.system.Library.loadNative(Library.java:431)
	at org.lwjgl.system.Library.loadNative(Library.java:402)
	at org.lwjgl.cuda.CU.<clinit>(CU.java:34)
	at me.djtheredstoner.gitvanity.cuda.CUDATest.main(CUDATest.java:33)
======== Error: Application returned non-zero code 1

[Spasi]

Thanks @DJtheRedstoner, will be fixed in the first 3.3.3 snapshot.

[Ealrann]

Hello,
I'm trying to run the HelloCuda, and I encounter exactly the same problem on the v3.3.3 :

[LWJGL] Failed to load a library. Possible solutions:
        a) Install the library or the driver that provides the library.
        b) Ensure that the library is accessible from the system library paths.
[LWJGL] Enable debug mode with -Dorg.lwjgl.util.Debug=true for better diagnostics.
[LWJGL] Enable the SharedLibraryLoader debug mode with -Dorg.lwjgl.util.DebugLoader=true for better diagnostics.
Exception in thread "main" java.lang.UnsatisfiedLinkError: Failed to locate library: libnvcuda.so
        at org.lwjgl@3.3.3+5/org.lwjgl.system.Library.loadNative(Library.java:346)
        at org.lwjgl@3.3.3+5/org.lwjgl.system.Library.loadNative(Library.java:236)
        at org.lwjgl@3.3.3+5/org.lwjgl.system.Library.loadNative(Library.java:217)
        at org.lwjgl@3.3.3+5/org.lwjgl.system.Library.loadNative(Library.java:431)
        at org.lwjgl@3.3.3+5/org.lwjgl.system.Library.loadNative(Library.java:402)
        at org.lwjgl.cuda@3.3.3+5/org.lwjgl.cuda.CUDA.isPerThreadDefaultStreamSupported(CUDA.java:76)
        at org.nyaneer/org.xyz.CudaTest.run(CudaTest.java:94)
        at org.nyaneer/org.xyz.XYZApplicationLauncher.main(XYZApplicationLauncher.java:26)

I'm on Archlinux, with cuda package installed. It looks like the library is named "libcuda.so" there

# find / -name "*cuda.so" -type f 2>/dev/null
/opt/cuda/targets/x86_64-linux/lib/stubs/libcuda.so

[Ealrann]

Ok, I got it working, but there is still a problem.

On Archlinux, libcuda.so is located in the package nvidia-utils (and not in package cuda)

But LWJGL 3.3.3 is still looking for a lib named libnvcuda.so.
As a workaround, I made a symbolic link:
ln -s /usr/lib/libcuda.so /usr/lib/libnvcuda.so