Fails to build on Fedora 42

[Naros]

NVIDIA Open GPU Kernel Modules Version

e00332b

Operating System and Version

Fedora 42

Kernel Release

6.14.5-300.fc42.x86_64

Please confirm you are running a stable release kernel (e.g. not a -rc). We do not accept bug reports for unreleased kernels.

• I am running on a stable kernel release.

Build Command

make modules -j$(nproc)

Terminal output/Build Log

build.log

More Info

No response

[ptr1337]

This needs a patch for GCC15 - rpmfusion does already provide this. You maybe want to use the rpmfusion packages, till NVIDIA fixes this, see:
rpmfusion/nvidia-kmod@16eebfc

Or standalone patch, which you can apply before running the .run:
https://github.com/CachyOS/CachyOS-PKGBUILDS/blob/master/nvidia/nvidia-utils/0008-kbuild-Add-workaround-for-GCC-15-Compilation.patch

[zcobol]

The easiest way to install from source, until an official fix, is as explained in #827

Just modify two lines in kernel-open/common/inc/conftest.h by adding -std=gnu17 compiler flag and it builds on FC42 with GCC15 also.

Or go the rpmfusion option.

[njgrisafi]

Or go the rpmfusion option.

Can you provide the best way to do this?

I followed the kernel open guide here https://rpmfusion.org/Howto/NVIDIA#Kernel_Open but having issues finding the repository.

[x5f3759df]

You can use rawhide repo to install latest beta driver

sudo dnf install rpmfusion-nonfree-release-rawhide
sudo dnf --enable-repo=rpmfusion-nonfree-rawhide update *\nvidia\*

user@fedora ~> rpm -qa | grep nvidia
libva-nvidia-driver-0.0.13^20250419gitc2860cc-1.fc42.x86_64
libva-nvidia-driver-0.0.13^20250419gitc2860cc-1.fc42.i686
kmod-nvidia-open-6.14.6-300.fc42.x86_64-570.144-1.fc42.x86_64
nvidia-gpu-firmware-20250509-1.fc42.noarch
xorg-x11-drv-nvidia-cuda-libs-575.51.02-2.fc43.x86_64
nvidia-modprobe-575.51.02-1.fc43.x86_64
nvidia-persistenced-575.51.02-1.fc43.x86_64
xorg-x11-drv-nvidia-kmodsrc-575.51.02-2.fc43.x86_64
xorg-x11-drv-nvidia-libs-575.51.02-2.fc43.i686
xorg-x11-drv-nvidia-libs-575.51.02-2.fc43.x86_64
nvidia-settings-575.51.02-1.fc43.x86_64
xorg-x11-drv-nvidia-575.51.02-2.fc43.x86_64
akmod-nvidia-575.51.02-4.fc43.x86_64
xorg-x11-drv-nvidia-cuda-libs-575.51.02-2.fc43.i686
xorg-x11-drv-nvidia-cuda-575.51.02-2.fc43.x86_64
xorg-x11-drv-nvidia-power-575.51.02-2.fc43.x86_64
kmod-nvidia-6.14.6-300.fc42.x86_64-575.51.02-4.fc42.x86_64