Properly detect and set HAVE_GPL_ONLY_SYMBOLS based on license

config/user-ioctl.m4

@@ -2,7 +2,7 @@ dnl #
 dnl # Check for ioctl()
 dnl #
 AC_DEFUN([ZFS_AC_CONFIG_USER_IOCTL], [
-	AC_MSG_CHECKING(checking for ioctl())
+	AC_MSG_CHECKING(for ioctl())
 	AC_EGREP_HEADER(ioctl, unistd.h, is_unistd=yes, is_unistd=no)
 	AC_EGREP_HEADER(ioctl, sys/ioctl.h, is_sys_ioctl=yes, is_sys_ioctl=no)
 	AC_EGREP_HEADER(ioctl, stropts.h, is_stropts=yes, is_stropts=no)

config/zfs-build.m4

@@ -168,10 +168,13 @@ AC_DEFUN([ZFS_AC_SPL], [
 ])
 
 AC_DEFUN([ZFS_AC_LICENSE], [
-        AC_MSG_CHECKING([license])
-        AC_MSG_RESULT([CDDL])
-dnl #        AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
-dnl #                [Define to 1 if module is licensed under the GPL])
+	AC_MSG_CHECKING([zfs license])
+	license=`grep MODULE_LICENSE module/zfs/zfs_ioctl.c | cut -f2 -d'"'`
+	AC_MSG_RESULT([$license])
+	if test "$license" = GPL; then
+		AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
+		          [Define to 1 if module is licensed under the GPL])
+	fi
 ])
 
 AC_DEFUN([ZFS_AC_DEBUG], [

configure.ac

@@ -52,8 +52,8 @@ splbuild=
 
 ZFS_AC_KERNEL
 ZFS_AC_SPL
-ZFS_AC_CONFIG
 ZFS_AC_LICENSE
+ZFS_AC_CONFIG
 ZFS_AC_DEBUG
 
 AC_CONFIG_FILES([