/usr/src/linux-4.0.5-gentoo/include/asm-generic/qrwlock.h: In function ‘queue_write_trylock’:
/usr/src/linux-4.0.5-gentoo/include/asm-generic/qrwlock.h:93:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
          cnts, cnts | _QW_LOCKED) == cnts);
                                   ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-pat.c: In function ‘nv_disable_caches’:
/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-pat.c:38:5: error: implicit declaration of function ‘read_cr4’ [-Werror=implicit-function-declaration]
     *cr4 = read_cr4();
     ^
/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-pat.c:39:5: error: implicit declaration of function ‘write_cr4’ [-Werror=implicit-function-declaration]
     if (*cr4 & 0x80) write_cr4(*cr4 & ~0x80);
     ^
In file included from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/stddef.h:1:0,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/stddef.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/posix_types.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/types.h:13,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/types.h:5,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/capability.h:16,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/capability.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/sched.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/utsname.h:5,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-linux.h:44,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-p2p.c:15:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_from_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:712:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_to_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:730:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
cc1: some warnings being treated as errors
/usr/src/linux-4.0.5-gentoo/scripts/Makefile.build:258: recipe for target '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-pat.o' failed
make[3]: *** [/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-pat.o] Error 1
make[3]: *** Waiting for unfinished jobs....
In file included from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/stddef.h:1:0,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/stddef.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/posix_types.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/types.h:13,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/types.h:5,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/capability.h:16,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/capability.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/sched.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/utsname.h:5,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-linux.h:44,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-vtophys.c:15:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_from_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:712:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_to_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:730:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
In file included from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/stddef.h:1:0,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/stddef.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/posix_types.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/types.h:13,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/types.h:5,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/capability.h:16,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/capability.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/sched.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/utsname.h:5,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-linux.h:44,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-vm.c:14:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_from_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:712:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_to_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:730:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
In file included from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/stddef.h:1:0,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/stddef.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/posix_types.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/types.h:13,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/types.h:5,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/capability.h:16,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/capability.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/sched.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/utsname.h:5,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-linux.h:44,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-usermap.c:15:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_from_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:712:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_to_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:730:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
In file included from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/stddef.h:1:0,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/stddef.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/posix_types.h:4,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/types.h:13,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/types.h:5,
                 from /usr/src/linux-4.0.5-gentoo/include/uapi/linux/capability.h:16,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/capability.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/sched.h:15,
                 from /usr/src/linux-4.0.5-gentoo/include/linux/utsname.h:5,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/nv-linux.h:44,
                 from /mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel/os-interface.c:15:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_from_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:712:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h: In function ‘copy_to_user’:
/usr/src/linux-4.0.5-gentoo/arch/x86/include/asm/uaccess.h:730:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (likely(sz < 0 || sz >= n))
                          ^
/usr/src/linux-4.0.5-gentoo/include/linux/compiler.h:163:40: note: in definition of macro ‘likely’
 # define likely(x) __builtin_expect(!!(x), 1)
                                        ^
/usr/src/linux-4.0.5-gentoo/Makefile:1390: recipe for target '_module_/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel' failed
make[2]: *** [_module_/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel] Error 2
make[2]: Leaving directory '/usr/src/linux-4.0.5-gentoo'
Makefile:145: recipe for target 'sub-make' failed
make[1]: *** [sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-4.0.5-gentoo'
NVIDIA: left KBUILD.
nvidia.ko failed to build!
Makefile:181: recipe for target 'nvidia.ko' failed
make: *** [nvidia.ko] Error 1
 * ERROR: x11-drivers/nvidia-drivers-340.76::gentoo failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=x11-drivers/nvidia-drivers-340.76::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=x11-drivers/nvidia-drivers-340.76::gentoo'`.
 * The complete build log is located at '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/temp/build.log'.
 * The ebuild environment file is located at '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/temp/environment'.
 * Working directory: '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel'
 * S: '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/'

>>> Failed to emerge x11-drivers/nvidia-drivers-340.76, Log file:

>>>  '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/temp/build.log'

 * Messages for package x11-drivers/nvidia-drivers-340.76:

 * Gentoo supports kernels which are supported by NVIDIA
 * which are limited to the following kernels:
 * <sys-kernel/gentoo-sources-3.18
 * <sys-kernel/vanilla-sources-3.18
 *
 * You are free to utilize epatch_user to provide whatever
 * support you feel is appropriate, but will not receive
 * support as a result of those changes.
 *
 * Do not file a bug report about this.

 * Messages for package x11-drivers/nvidia-drivers-340.76:

 * ERROR: x11-drivers/nvidia-drivers-340.76::gentoo failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=x11-drivers/nvidia-drivers-340.76::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=x11-drivers/nvidia-drivers-340.76::gentoo'`.
 * The complete build log is located at '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/temp/build.log'.
 * The ebuild environment file is located at '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/temp/environment'.
 * Working directory: '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/kernel'
 * S: '/mnt/old/home/tmp/portage/x11-drivers/nvidia-drivers-340.76/work/'