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Fix configure tests to play nice with GCC 4.6 

As of GCC 4.6, specific kernel 2.6.32 header files do not compile
cleanly without warnings. One specific example of this is the
arch/x86/include/asm/percpu.h file. Thus, a few of the configure tests
were getting hung up on this and the '-Wno-unsued-but-set-variables'
compile option had to be introduced.

Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #459
This commit is contained in:
Prakash Surya 2011-11-29 14:31:20 -08:00 committed by Brian Behlendorf
parent f31b3ebe6e
commit b9c59ec83a
12 changed files with 99 additions and 0 deletions
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3
config/kernel-bdev-block-device-operations.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS], [
AC_MSG_CHECKING([block device operation prototypes])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -30,4 +32,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS], [
],[
AC_MSG_RESULT(struct inode)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-bdev-logical-size.m4
View File

@ -7,6 +7,8 @@ dnl # it explicit.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE], [
AC_MSG_CHECKING([whether bdev_logical_block_size() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -19,4 +21,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-end-request.m4
View File

@ -5,6 +5,8 @@ dnl # changed in 2.6.31 so it may be used by non-GPL modules.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_END_REQUEST], [
AC_MSG_CHECKING([whether blk_end_request() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -34,4 +36,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_END_REQUEST], [
AC_DEFINE(HAVE_BLK_END_REQUEST_GPL_ONLY, 1,
[blk_end_request() is GPL-only])
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-fetch-request.m4
View File

@ -7,6 +7,8 @@ dnl # next available request and removed it from the request queue.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_FETCH_REQUEST], [
AC_MSG_CHECKING([whether blk_fetch_request() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -19,4 +21,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_FETCH_REQUEST], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-requeue-request.m4
View File

@ -6,6 +6,8 @@ dnl # blk_requeue_request() function.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST], [
AC_MSG_CHECKING([whether blk_requeue_request() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -19,4 +21,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-rq-bytes.m4
View File

@ -6,6 +6,8 @@ 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])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -35,4 +37,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [
AC_DEFINE(HAVE_BLK_RQ_BYTES_GPL_ONLY, 1,
[blk_rq_bytes() is GPL-only])
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-rq-pos.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.31 API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_POS], [
AC_MSG_CHECKING([whether blk_rq_pos() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_POS], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-blk-rq-sectors.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.31 API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_SECTORS], [
AC_MSG_CHECKING([whether blk_rq_sectors() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_SECTORS], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-get-disk-ro.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_RO], [
AC_MSG_CHECKING([whether get_disk_ro() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_RO], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-rq-for-each_segment.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
AC_MSG_CHECKING([whether rq_for_each_segment() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -17,4 +19,5 @@ AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

3
config/kernel-rq-is_sync.m4
View File

@ -3,6 +3,8 @@ dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
AC_MSG_CHECKING([whether rq_is_sync() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

66
configure vendored
View File

@ -12486,6 +12486,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking block device operation prototypes" >&5
$as_echo_n "checking block device operation prototypes... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -12563,6 +12565,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether kernel defines fmode_t" >&5
$as_echo_n "checking whether kernel defines fmode_t... " >&6; }
@ -12869,6 +12872,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking whether bdev_logical_block_size() is available" >&5
$as_echo_n "checking whether bdev_logical_block_size() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -12931,6 +12936,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether bio_empty_barrier() is defined" >&5
@ -13471,6 +13477,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking whether blk_end_request() is available" >&5
$as_echo_n "checking whether blk_end_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -13601,10 +13609,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_fetch_request() is available" >&5
$as_echo_n "checking whether blk_fetch_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -13667,10 +13678,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_requeue_request() is available" >&5
$as_echo_n "checking whether blk_requeue_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -13734,10 +13748,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_bytes() is available" >&5
$as_echo_n "checking whether blk_rq_bytes() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -13868,10 +13885,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_pos() is available" >&5
$as_echo_n "checking whether blk_rq_pos() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -13934,10 +13954,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_sectors() is available" >&5
$as_echo_n "checking whether blk_rq_sectors() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -14000,10 +14023,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether get_disk_ro() is available" >&5
$as_echo_n "checking whether get_disk_ro() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -14066,10 +14092,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether rq_is_sync() is available" >&5
$as_echo_n "checking whether rq_is_sync() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -14132,10 +14161,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether rq_for_each_segment() is available" >&5
$as_echo_n "checking whether rq_for_each_segment() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -14200,6 +14232,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether super_block uses const struct xattr_hander" >&5
$as_echo_n "checking whether super_block uses const struct xattr_hander... " >&6; }
@ -17223,6 +17256,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking block device operation prototypes" >&5
$as_echo_n "checking block device operation prototypes... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -17300,6 +17335,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether kernel defines fmode_t" >&5
$as_echo_n "checking whether kernel defines fmode_t... " >&6; }
@ -17606,6 +17642,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking whether bdev_logical_block_size() is available" >&5
$as_echo_n "checking whether bdev_logical_block_size() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -17668,6 +17706,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether bio_empty_barrier() is defined" >&5
@ -18208,6 +18247,8 @@ fi
{ $as_echo "$as_me:$LINENO: checking whether blk_end_request() is available" >&5
$as_echo_n "checking whether blk_end_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18338,10 +18379,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_fetch_request() is available" >&5
$as_echo_n "checking whether blk_fetch_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18404,10 +18448,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_requeue_request() is available" >&5
$as_echo_n "checking whether blk_requeue_request() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18471,10 +18518,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_bytes() is available" >&5
$as_echo_n "checking whether blk_rq_bytes() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18605,10 +18655,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_pos() is available" >&5
$as_echo_n "checking whether blk_rq_pos() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18671,10 +18724,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether blk_rq_sectors() is available" >&5
$as_echo_n "checking whether blk_rq_sectors() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18737,10 +18793,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether get_disk_ro() is available" >&5
$as_echo_n "checking whether get_disk_ro() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18803,10 +18862,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether rq_is_sync() is available" >&5
$as_echo_n "checking whether rq_is_sync() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18869,10 +18931,13 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether rq_for_each_segment() is available" >&5
$as_echo_n "checking whether rq_for_each_segment() is available... " >&6; }
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
cat confdefs.h - <<_ACEOF >conftest.c
@ -18937,6 +19002,7 @@ fi
rm -Rf build
EXTRA_KCFLAGS="$tmp_flags"
{ $as_echo "$as_me:$LINENO: checking whether super_block uses const struct xattr_hander" >&5
$as_echo_n "checking whether super_block uses const struct xattr_hander... " >&6; }