Update build system and packaging

Minimal changes required to integrate the SPL sources in to the
ZFS repository build infrastructure and packaging.

Build system and packaging:
  * Renamed SPL_* autoconf m4 macros to ZFS_*.
  * Removed redundant SPL_* autoconf m4 macros.
  * Updated the RPM spec files to remove SPL package dependency.
  * The zfs package obsoletes the spl package, and the zfs-kmod
    package obsoletes the spl-kmod package.
  * The zfs-kmod-devel* packages were updated to add compatibility
    symlinks under /usr/src/spl-x.y.z until all dependent packages
    can be updated.  They will be removed in a future release.
  * Updated copy-builtin script for in-kernel builds.
  * Updated DKMS package to include the spl.ko.
  * Updated stale AUTHORS file to include all contributors.
  * Updated stale COPYRIGHT and included the SPL as an exception.
  * Renamed README.markdown to README.md
  * Renamed OPENSOLARIS.LICENSE to LICENSE.
  * Renamed DISCLAIMER to NOTICE.

Required code changes:
  * Removed redundant HAVE_SPL macro.
  * Removed _BOOT from nvpairs since it doesn't apply for Linux.
  * Initial header cleanup (removal of empty headers, refactoring).
  * Remove SPL repository clone/build from zimport.sh.
  * Use of DEFINE_RATELIMIT_STATE and DEFINE_SPINLOCK removed due
    to build issues when forcing C99 compilation.
  * Replaced legacy ACCESS_ONCE with READ_ONCE.
  * Include needed headers for `current` and `EXPORT_SYMBOL`.

Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Olaf Faaland <[email protected]>
Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: Pavel Zakharov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
TEST_ZIMPORT_SKIP="yes"
Closes #7556

1 files changed, 17 insertions, 9 deletions

diff --git a/config/zfs-meta.m4 b/config/zfs-meta.m4
index 3e1429d99..aa0fc1420 100644
--- a/config/zfs-meta.m4
+++ b/config/zfs-meta.m4
@@ -60,9 +60,12 @@ AC_DEFUN([ZFS_AC_META], [
 
 		ZFS_META_VERSION=_ZFS_AC_META_GETVAL([Version]);
 		if test -n "$ZFS_META_VERSION"; then
-			AC_DEFINE_UNQUOTED([ZFS_META_VERSION], ["$ZFS_META_VERSION"],
-				[Define the project version.]
-			)
+			AC_DEFINE_UNQUOTED([ZFS_META_VERSION],
+			    ["$ZFS_META_VERSION"],
+			    [Define the project version.])
+			AC_DEFINE_UNQUOTED([SPL_META_VERSION],
+			    [ZFS_META_VERSION],
+			    [Defined for legacy compatibility.])
 			AC_SUBST([ZFS_META_VERSION])
 		fi
 
@@ -86,9 +89,12 @@ AC_DEFUN([ZFS_AC_META], [
 		fi
 
 		if test -n "$ZFS_META_RELEASE"; then
-			AC_DEFINE_UNQUOTED([ZFS_META_RELEASE], ["$ZFS_META_RELEASE"],
-				[Define the project release.]
-			)
+			AC_DEFINE_UNQUOTED([ZFS_META_RELEASE],
+			     ["$ZFS_META_RELEASE"],
+			     [Define the project release.])
+			AC_DEFINE_UNQUOTED([SPL_META_RELEASE],
+			    [ZFS_META_RELEASE],
+			    [Defined for legacy compatibility.])
 			AC_SUBST([ZFS_META_RELEASE])
 
 			RELEASE="$ZFS_META_RELEASE"
@@ -108,9 +114,11 @@ AC_DEFUN([ZFS_AC_META], [
 				test -n "$ZFS_META_RELEASE" && 
 				        ZFS_META_ALIAS="$ZFS_META_ALIAS-$ZFS_META_RELEASE"
 				AC_DEFINE_UNQUOTED([ZFS_META_ALIAS],
-					["$ZFS_META_ALIAS"],
-					[Define the project alias string.] 
-				)
+				    ["$ZFS_META_ALIAS"],
+				    [Define the project alias string.])
+				AC_DEFINE_UNQUOTED([SPL_META_ALIAS],
+				    [ZFS_META_ALIAS],
+				    [Defined for legacy compatibility.])
 				AC_SUBST([ZFS_META_ALIAS])
 		fi