diff options
| author | Brian Behlendorf <[email protected]> | 2010-08-26 11:22:58 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2010-08-31 13:41:27 -0700 |
| commit | c9c0d073da561bcbefbdf09c87fc75b227415619 (patch) | |
| tree | 7daee55ae61526107f421de48171573fa5a15d28 /config/kernel-blk-rq-bytes.m4 | |
| parent | 40b84e7aec6392187722e61e5a4a853b530bf60f (diff) | |
Add build system
Add autoconf style build infrastructure to the ZFS tree. This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.
Diffstat (limited to 'config/kernel-blk-rq-bytes.m4')
| -rw-r--r-- | config/kernel-blk-rq-bytes.m4 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/config/kernel-blk-rq-bytes.m4 b/config/kernel-blk-rq-bytes.m4 new file mode 100644 index 000000000..da83405cb --- /dev/null +++ b/config/kernel-blk-rq-bytes.m4 @@ -0,0 +1,38 @@ +dnl # +dnl # 2.6.29 API change +dnl # In the 2.6.29 kernel blk_rq_bytes() was available as a GPL-only symbol. +dnl # So we need to check the symbol license as well. As of 2.6.31 the +dnl blk_rq_bytes() helper was changed to a static inline which we can use. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [ + AC_MSG_CHECKING([whether blk_rq_bytes() is available]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blkdev.h> + ],[ + struct request *req = NULL; + (void) blk_rq_bytes(req); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BLK_RQ_BYTES, 1, + [blk_rq_bytes() is available]) + ],[ + AC_MSG_RESULT(no) + ]) + + AC_MSG_CHECKING([whether blk_rq_bytes() is GPL-only]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/module.h> + #include <linux/blkdev.h> + + MODULE_LICENSE("CDDL"); + ],[ + struct request *req = NULL; + (void) blk_rq_bytes(req); + ],[ + AC_MSG_RESULT(no) + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BLK_RQ_BYTES_GPL_ONLY, 1, + [blk_rq_bytes() is GPL-only]) + ]) +]) |