Arch Linux User Repository

I improved the second patch to properly fix warning during conftest related to EFI (instead of hiding it).

To build a package with a proper fix, do the following:

git clone https://aur.archlinux.org/nvidia-470xx-utils.git
cd nvidia-470xx-utils
curl https://0x0.st/XKB6.patch -o 0001-Fix-GCC-14-build.patch
patch -p1 -i 0001-Fix-GCC-14-build.patch
makepkg

See fixes provided by: https://0x0.st/XKB6.patch

Using -fpermissive is wrong, and introduces a major bug: The call to vmap is done with the wrong function call (missing one argument), as explained in [2].

I did create various patches in order to fix it properly, see [1] and the Nvidia fix that was back-ported [3].

To build a package with a proper fix, do the following:

git clone https://aur.archlinux.org/nvidia-470xx-utils.git
cd nvidia-470xx-utils
curl https://0x0.st/XKmG.patch -o 0001-Fix-GCC-14-build.patch
patch -p1 -i 0001-Fix-GCC-14-build.patch
makepkg

[1] https://0x0.st/XKmG.patch

[2] https://forums.developer.nvidia.com/t/nvidia-modules-build-failure-with-upcoming-gcc-14-and-recent-kernels-due-to-misfiring-conftest-sh-test-heads-up/279072

[3] https://github.com/NVIDIA/open-gpu-kernel-modules/commit/811073c51e1f098834e90e67a074f1746b6e2831#diff-32da369dcd8cd223fa47c8b86028f1a7572ed699c33f2057f4702e4b36f13dd5

@a821, @Mechanicus: actually i tried easiest workaround which is downgrade ['gcc-libs', 'gcc'] from 14.1.1+r1+g43b730b9134-1 to 13.2.1-6 and has been compiled and worked again as previously. Thanks you folks for your efforts to find a workarounds.

loading packages...
warning: downgrading package gcc (14.1.1+r1+g43b730b9134-1 => 13.2.1-6)
warning: downgrading package gcc-libs (14.1.1+r1+g43b730b9134-1 => 13.2.1-6)
resolving dependencies...
looking for conflicting packages...

Package (2)  Old Version               New Version  Net Change

gcc          14.1.1+r1+g43b730b9134-1  13.2.1-6     -17.55 MiB
gcc-libs     14.1.1+r1+g43b730b9134-1  13.2.1-6      -3.81 MiB

==> dkms install --no-depmod nvidia/470.239.06 -k 6.6.30-2-lts
==> depmod 6.6.30-2-lts
(6/6) Updating linux initcpios...
==> Building image from preset: /etc/mkinitcpio.d/linux-lts.preset: 'default'
==> Using default configuration file: '/etc/mkinitcpio.conf'
  -> -k /boot/vmlinuz-linux-lts -g /boot/initramfs-linux-lts.img
==> Starting build: '6.6.30-2-lts'
  -> Running build hook: [base]
  -> Running build hook: [udev]
  -> Running build hook: [microcode]
  -> Running build hook: [keyboard]

@unixv: Try -fpermissive patch. Copy the context to a file, for example workaround.patch, and then apply to the repo: git apply workaround.patch

diff --git a/PKGBUILD b/PKGBUILD
index 15fd45f..639ea2c 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -22,7 +22,8 @@ source=('nvidia-drm-outputclass.conf'
         "kernel-6.4.patch"
         "kernel-6.5.patch"
         "kernel-6.6.patch"
-        "kernel-6.1.76_6.6.15_6.7.3.patch")
+        "kernel-6.1.76_6.6.15_6.7.3.patch"
+        "gcc-permissive.patch")

 sha512sums=('de7116c09f282a27920a1382df84aa86f559e537664bb30689605177ce37dc5067748acf9afd66a3269a6e323461356592fdfc624c86523bf105ff8fe47d3770'  #nvidia-drm-outputclass
             '4b3ad73f5076ba90fe0b3a2e712ac9cde76f469cd8070280f960c3ce7dc502d1927f525ae18d008075c8f08ea432f7be0a6c3a7a6b49c361126dcf42f97ec499'  #nvidia-470xx.sysusers
@@ -31,7 +32,8 @@ sha512sums=('de7116c09f282a27920a1382df84aa86f559e537664bb30689605177ce37dc50677
             'd9df8b13d5fbe4f456a31de3679fd11aca7cd88771f8f11a5cc8ab17bab05861823b26d2d467593e5b90967a2902db691ca832f09fe21a5975eb3e4d6275e00c'  #kernel-6.4 patch
             '40ea983c81851b8a20629a943f9692cc0e007c815f46dd3b63cf1d7a44ccbed1ac5f9a3110720de54b017b9f9c7f5cc534ec6e097bc02fa5bd1de6b0a730c803'  #kernel-6.5 patch
             'fa9985b0dd9d7a973019da88a40d7830ea53df83af2d71d498b6b9dde04c0c797570991239dafc30cc2ccabbb8e8a7c3fa1bf89f26d8e8a26e624d7a17e5a84b'  #kernel-6.6 patch
-            'e0756be173930faf6b5104562d8092ccf8967fba7bf1a97d8e0e86e76a5e0e944b41f24aaee98eb8c7b3ad995353f6acb20a0f6173b82ee718664293a6493fea') #kernel-6.1 patch
+            'e0756be173930faf6b5104562d8092ccf8967fba7bf1a97d8e0e86e76a5e0e944b41f24aaee98eb8c7b3ad995353f6acb20a0f6173b82ee718664293a6493fea'  #kernel-6.1 patch
+            '5338c833081300a1857a2ed3e89a9ba67397b68a65a4cb029f69001519fc18d2b0f4af0aad389a2a0c0ecc7fd513cc47030a2f3c53b5b185fad25053b6a1f59c') #gcc-permissive patch

 create_links() {
     # create soname links
@@ -49,6 +51,9 @@ prepare() {
     cd "${_pkg}"
     bsdtar -xf nvidia-persistenced-init.tar.bz2

+    # GCC-14 workaround
+    patch -p1 -i "$srcdir/gcc-permissive.patch"
+
     cd kernel

 #    patch -p1 -i "$srcdir/kernel-6.4.patch"
diff --git a/gcc-permissive.patch b/gcc-permissive.patch
new file mode 100644
index 0000000..7f20dbd
--- /dev/null
+++ b/gcc-permissive.patch
@@ -0,0 +1,11 @@
+diff -Naru a/kernel/Kbuild b/kernel/Kbuild
+--- a/kernel/Kbuild    2024-02-03 08:25:55.000000000 +0200
++++ b/kernel/Kbuild    2024-05-12 15:37:12.620937599 +0300
+@@ -73,6 +73,7 @@
+ EXTRA_CFLAGS += $(call cc-option,-Werror=undef,)
+ EXTRA_CFLAGS += -DNV_SPECTRE_V2=$(NV_SPECTRE_V2)
+ EXTRA_CFLAGS += -DNV_KERNEL_INTERFACE_LAYER
++EXTRA_CFLAGS += -fpermissive
+ 
+ #
+ # Detect SGI UV systems and apply system-specific optimizations.

@unixv: did you read any of the latest comments / workarounds? If so, what did you try?

it's failed to compile and I'm no longer able to use my nvidia-470xx card .

(5/6) Install DKMS modules ==> dkms install --no-depmod nvidia/470.239.06 -k 6.6.30-2-lts Error! Bad return status for module build on kernel: 6.6.30-2-lts (x86_64) Consult /var/lib/dkms/nvidia/470.239.06/build/make.log for more information. ==> WARNING:dkms install --no-depmod nvidia/470.239.06 -k 6.6.30-2-lts' exited 10 `

@SoftExpert, older GCC will also work with -fpermissive flag, it is supported since GCC-4 version

@TechXero: We will update as soon as consensus is reached towards the needed patch - I still see that some differences allow to solve edge cases. We also want to avoid breaking currently working configurations. Can someone confirm that the patch will not break the build processus with older GCC ?

https://bbs.archlinux.org/viewtopic.php?id=295600 Does not compile without hands for current LTS kernel too.