diff options
Diffstat (limited to 'config/kernel.m4')
| -rw-r--r-- | config/kernel.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/config/kernel.m4 b/config/kernel.m4 index c71d576f4..353988e9c 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -958,3 +958,35 @@ AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ [test -f build/conftest/conftest.ko], [$3], [$4], [$5]) ]) ]) + +dnl # +dnl # AS_VERSION_COMPARE_LE +dnl # like AS_VERSION_COMPARE_LE, but runs $3 if (and only if) $1 <= $2 +dnl # AS_VERSION_COMPARE_LE (version-1, version-2, [action-if-less-or-equal], [action-if-greater]) +dnl # +AC_DEFUN([AS_VERSION_COMPARE_LE], [ + AS_VERSION_COMPARE([$1], [$2], [$3], [$3], [$4]) +]) + +dnl # +dnl # ZFS_LINUX_REQUIRE_API +dnl # like ZFS_LINUX_TEST_ERROR, except only fails if the kernel is +dnl # at least some specified version. +dnl # +AC_DEFUN([ZFS_LINUX_REQUIRE_API], [ + AS_VERSION_COMPARE_LE([$2], [$kernsrcver], [ + AC_MSG_ERROR([ + *** None of the expected "$1" interfaces were detected. This + *** interface is expected for kernels version "$2" and above. + *** This may be because your kernel version is newer than what is + *** supported, or you are using a patched custom kernel with + *** incompatible modifications. Newer kernels may have incompatible + *** APIs. + *** + *** ZFS Version: $ZFS_META_ALIAS + *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX + ]) + ], [ + AC_MSG_RESULT(no) + ]) +]) |