...

checking kernel build directory... /usr/lib/modules/6.12.25-2-lts/build
checking kernel source version... 6.12.25-2-lts
checking for kernel config option compatibility... done
checking whether CONFIG_MODULES is defined... no
configure: error: 
                *** This kernel does not include the required loadable module
                *** support!
                ***
                *** To build OpenZFS as a loadable Linux kernel module
                *** enable loadable module support by setting
                *** `CONFIG_MODULES=y` in the kernel configuration and run
                *** `make modules_prepare` in the Linux source tree.
                ***
                *** If you don't intend to enable loadable kernel module
                *** support, please compile OpenZFS as a Linux kernel built-in.
                ***
                *** Prepare the Linux source tree by running `make prepare`,
                *** use the OpenZFS `--enable-linux-builtin` configure option,
                *** copy the OpenZFS sources into the Linux source tree using
                *** `./copy-builtin <linux source directory>`,
                *** set `CONFIG_ZFS=y` in the kernel configuration and compile
                *** kernel as usual.

==> ERROR: A failure occurred in build().
    Aborting...

real    0m26.299s
user    0m24.087s
sys     0m4.462s