config/kernel-cpu_has_feature.m4

   1 dnl #
   2 dnl # cpu_has_feature() may referencing GPL-only cpu_feature_keys on powerpc
   3 dnl #
   4
   5 dnl #
   6 dnl # Checking if cpu_has_feature is exported GPL-only
   7 dnl #
   8 AC_DEFUN([ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE], [
   9         ZFS_LINUX_TEST_SRC([cpu_has_feature], [
  10                 #include <linux/version.h>
  11                 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
  12                 #include <asm/cpu_has_feature.h>
  13                 #else
  14                 #include <asm/cputable.h>
  15                 #endif
  16         ], [
  17                 return cpu_has_feature(CPU_FTR_ALTIVEC) ? 0 : 1;
  18         ], [], [ZFS_META_LICENSE])
  19 ])
  20 AC_DEFUN([ZFS_AC_KERNEL_CPU_HAS_FEATURE], [
  21         AC_MSG_CHECKING([whether cpu_has_feature() is GPL-only])
  22         ZFS_LINUX_TEST_RESULT([cpu_has_feature_license], [
  23                 AC_MSG_RESULT(no)
  24         ], [
  25                 AC_MSG_RESULT(yes)
  26                 AC_DEFINE(HAVE_CPU_HAS_FEATURE_GPL_ONLY, 1,
  27                     [cpu_has_feature() is GPL-only])
  28         ])
  29 ])