mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 01:51:00 +03:00
cac1f230e0
The configure script error message for kernels built with CONFIG_DEBUG_LOCK_ALLOC may give the impression that the issue is strictly with license compliance. To avoid confusion add some words indicating that the linking stage will fail if the build continues. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #773
487 lines
13 KiB
Plaintext
487 lines
13 KiB
Plaintext
dnl #
|
|
dnl # Default ZFS kernel configuration
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
|
|
ZFS_AC_KERNEL
|
|
ZFS_AC_SPL
|
|
ZFS_AC_KERNEL_CONFIG
|
|
ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS
|
|
ZFS_AC_KERNEL_TYPE_FMODE_T
|
|
ZFS_AC_KERNEL_KOBJ_NAME_LEN
|
|
ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
|
|
ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE
|
|
ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS
|
|
ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE
|
|
ZFS_AC_KERNEL_BIO_EMPTY_BARRIER
|
|
ZFS_AC_KERNEL_BIO_FAILFAST
|
|
ZFS_AC_KERNEL_BIO_FAILFAST_DTD
|
|
ZFS_AC_KERNEL_REQ_FAILFAST_MASK
|
|
ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
|
|
ZFS_AC_KERNEL_BIO_RW_SYNC
|
|
ZFS_AC_KERNEL_BIO_RW_SYNCIO
|
|
ZFS_AC_KERNEL_REQ_SYNC
|
|
ZFS_AC_KERNEL_BLK_END_REQUEST
|
|
ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
|
|
ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
|
|
ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
|
|
ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE
|
|
ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT
|
|
ZFS_AC_KERNEL_BLK_QUEUE_NONROT
|
|
ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
|
|
ZFS_AC_KERNEL_BLK_FETCH_REQUEST
|
|
ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST
|
|
ZFS_AC_KERNEL_BLK_RQ_BYTES
|
|
ZFS_AC_KERNEL_BLK_RQ_POS
|
|
ZFS_AC_KERNEL_BLK_RQ_SECTORS
|
|
ZFS_AC_KERNEL_GET_DISK_RO
|
|
ZFS_AC_KERNEL_RQ_IS_SYNC
|
|
ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT
|
|
ZFS_AC_KERNEL_CONST_XATTR_HANDLER
|
|
ZFS_AC_KERNEL_XATTR_HANDLER_GET
|
|
ZFS_AC_KERNEL_XATTR_HANDLER_SET
|
|
ZFS_AC_KERNEL_SHOW_OPTIONS
|
|
ZFS_AC_KERNEL_FSYNC
|
|
ZFS_AC_KERNEL_EVICT_INODE
|
|
ZFS_AC_KERNEL_NR_CACHED_OBJECTS
|
|
ZFS_AC_KERNEL_FREE_CACHED_OBJECTS
|
|
ZFS_AC_KERNEL_FALLOCATE
|
|
ZFS_AC_KERNEL_CREATE_UMODE_T
|
|
ZFS_AC_KERNEL_AUTOMOUNT
|
|
ZFS_AC_KERNEL_INSERT_INODE_LOCKED
|
|
ZFS_AC_KERNEL_D_OBTAIN_ALIAS
|
|
ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE
|
|
ZFS_AC_KERNEL_TRUNCATE_SETSIZE
|
|
ZFS_AC_KERNEL_6ARGS_SECURITY_INODE_INIT_SECURITY
|
|
ZFS_AC_KERNEL_CALLBACK_SECURITY_INODE_INIT_SECURITY
|
|
ZFS_AC_KERNEL_MOUNT_NODEV
|
|
ZFS_AC_KERNEL_SHRINK
|
|
ZFS_AC_KERNEL_BDI
|
|
ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER
|
|
ZFS_AC_KERNEL_SET_NLINK
|
|
|
|
AS_IF([test "$LINUX_OBJ" != "$LINUX"], [
|
|
KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
|
|
])
|
|
AC_SUBST(KERNELMAKE_PARAMS)
|
|
|
|
|
|
dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other
|
|
dnl # compiler options are added by the kernel build system.
|
|
KERNELCPPFLAGS="$KERNELCPPFLAGS $NO_UNUSED_BUT_SET_VARIABLE"
|
|
KERNELCPPFLAGS="$KERNELCPPFLAGS -DHAVE_SPL -D_KERNEL"
|
|
KERNELCPPFLAGS="$KERNELCPPFLAGS -DTEXT_DOMAIN=\\\"zfs-linux-kernel\\\""
|
|
|
|
AC_SUBST(KERNELCPPFLAGS)
|
|
])
|
|
|
|
dnl #
|
|
dnl # Detect name used for Module.symvers file in kernel
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [
|
|
modpost=$LINUX/scripts/Makefile.modpost
|
|
AC_MSG_CHECKING([kernel file name for module symbols])
|
|
AS_IF([test -f "$modpost"], [
|
|
AS_IF([grep -q Modules.symvers $modpost], [
|
|
LINUX_SYMBOLS=Modules.symvers
|
|
], [
|
|
LINUX_SYMBOLS=Module.symvers
|
|
])
|
|
|
|
AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [
|
|
AC_MSG_ERROR([
|
|
*** Please make sure the kernel devel package for your distribution
|
|
*** is installed. If your building with a custom kernel make sure the
|
|
*** kernel is configured, built, and the '--with-linux=PATH' configure
|
|
*** option refers to the location of the kernel source.])
|
|
])
|
|
], [
|
|
LINUX_SYMBOLS=NONE
|
|
])
|
|
AC_MSG_RESULT($LINUX_SYMBOLS)
|
|
AC_SUBST(LINUX_SYMBOLS)
|
|
])
|
|
|
|
dnl #
|
|
dnl # Detect the kernel to be built against
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL], [
|
|
AC_ARG_WITH([linux],
|
|
AS_HELP_STRING([--with-linux=PATH],
|
|
[Path to kernel source]),
|
|
[kernelsrc="$withval"])
|
|
|
|
AC_ARG_WITH(linux-obj,
|
|
AS_HELP_STRING([--with-linux-obj=PATH],
|
|
[Path to kernel build objects]),
|
|
[kernelbuild="$withval"])
|
|
|
|
AC_MSG_CHECKING([kernel source directory])
|
|
AS_IF([test -z "$kernelsrc"], [
|
|
AS_IF([test -e "/lib/modules/$(uname -r)/source"], [
|
|
headersdir="/lib/modules/$(uname -r)/source"
|
|
sourcelink=$(readlink -f "$headersdir")
|
|
], [test -e "/lib/modules/$(uname -r)/build"], [
|
|
headersdir="/lib/modules/$(uname -r)/build"
|
|
sourcelink=$(readlink -f "$headersdir")
|
|
], [
|
|
sourcelink=$(ls -1d /usr/src/kernels/* \
|
|
/usr/src/linux-* \
|
|
2>/dev/null | grep -v obj | tail -1)
|
|
])
|
|
|
|
AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [
|
|
kernelsrc=`readlink -f ${sourcelink}`
|
|
], [
|
|
AC_MSG_RESULT([Not found])
|
|
AC_MSG_ERROR([
|
|
*** Please make sure the kernel devel package for your distribution
|
|
*** is installed then try again. If that fails you can specify the
|
|
*** location of the kernel source with the '--with-linux=PATH' option.])
|
|
])
|
|
], [
|
|
AS_IF([test "$kernelsrc" = "NONE"], [
|
|
kernsrcver=NONE
|
|
])
|
|
])
|
|
|
|
AC_MSG_RESULT([$kernelsrc])
|
|
AC_MSG_CHECKING([kernel build directory])
|
|
AS_IF([test -z "$kernelbuild"], [
|
|
AS_IF([test -e "/lib/modules/$(uname -r)/build"], [
|
|
kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
|
|
], [test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}], [
|
|
kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
|
|
], [test -d ${kernelsrc}-obj/${target_cpu}/default], [
|
|
kernelbuild=${kernelsrc}-obj/${target_cpu}/default
|
|
], [test -d `dirname ${kernelsrc}`/build-${target_cpu}], [
|
|
kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu}
|
|
], [
|
|
kernelbuild=${kernelsrc}
|
|
])
|
|
])
|
|
AC_MSG_RESULT([$kernelbuild])
|
|
|
|
AC_MSG_CHECKING([kernel source version])
|
|
utsrelease1=$kernelbuild/include/linux/version.h
|
|
utsrelease2=$kernelbuild/include/linux/utsrelease.h
|
|
utsrelease3=$kernelbuild/include/generated/utsrelease.h
|
|
AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1], [
|
|
utsrelease=linux/version.h
|
|
], [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2], [
|
|
utsrelease=linux/utsrelease.h
|
|
], [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3], [
|
|
utsrelease=generated/utsrelease.h
|
|
])
|
|
|
|
AS_IF([test "$utsrelease"], [
|
|
kernsrcver=`(echo "#include <$utsrelease>";
|
|
echo "kernsrcver=UTS_RELEASE") |
|
|
cpp -I $kernelbuild/include |
|
|
grep "^kernsrcver=" | cut -d \" -f 2`
|
|
|
|
AS_IF([test -z "$kernsrcver"], [
|
|
AC_MSG_RESULT([Not found])
|
|
AC_MSG_ERROR([*** Cannot determine kernel version.])
|
|
])
|
|
], [
|
|
AC_MSG_RESULT([Not found])
|
|
AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
|
|
])
|
|
|
|
AC_MSG_RESULT([$kernsrcver])
|
|
|
|
LINUX=${kernelsrc}
|
|
LINUX_OBJ=${kernelbuild}
|
|
LINUX_VERSION=${kernsrcver}
|
|
|
|
AC_SUBST(LINUX)
|
|
AC_SUBST(LINUX_OBJ)
|
|
AC_SUBST(LINUX_VERSION)
|
|
|
|
ZFS_AC_MODULE_SYMVERS
|
|
])
|
|
|
|
dnl #
|
|
dnl # Detect name used for the additional SPL Module.symvers file. If one
|
|
dnl # does not exist this is likely because the SPL has been configured
|
|
dnl # but not built. To allow recursive builds a good guess is made as to
|
|
dnl # what this file will be named based on what it is named in the kernel
|
|
dnl # build products. This file will first be used at link time so if
|
|
dnl # the guess is wrong the build will fail then. This unfortunately
|
|
dnl # means the ZFS package does not contain a reliable mechanism to
|
|
dnl # detect symbols exported by the SPL at configure time.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_SPL_MODULE_SYMVERS], [
|
|
AC_MSG_CHECKING([spl file name for module symbols])
|
|
AS_IF([test -r $SPL_OBJ/Module.symvers], [
|
|
SPL_SYMBOLS=Module.symvers
|
|
], [test -r $SPL_OBJ/Modules.symvers], [
|
|
SPL_SYMBOLS=Modules.symvers
|
|
], [test -r $SPL_OBJ/module/Module.symvers], [
|
|
SPL_SYMBOLS=Module.symvers
|
|
], [test -r $SPL_OBJ/module/Modules.symvers], [
|
|
SPL_SYMBOLS=Modules.symvers
|
|
], [
|
|
SPL_SYMBOLS=$LINUX_SYMBOLS
|
|
])
|
|
|
|
AC_MSG_RESULT([$SPL_SYMBOLS])
|
|
AC_SUBST(SPL_SYMBOLS)
|
|
])
|
|
|
|
dnl #
|
|
dnl # Detect the SPL module to be built against
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_SPL], [
|
|
AC_ARG_WITH([spl],
|
|
AS_HELP_STRING([--with-spl=PATH],
|
|
[Path to spl source]),
|
|
[splsrc="$withval"])
|
|
|
|
AC_ARG_WITH([spl-obj],
|
|
AS_HELP_STRING([--with-spl-obj=PATH],
|
|
[Path to spl build objects]),
|
|
[splbuild="$withval"])
|
|
|
|
|
|
AC_MSG_CHECKING([spl source directory])
|
|
AS_IF([test -z "$splsrc"], [
|
|
sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
|
|
2>/dev/null | tail -1`
|
|
|
|
AS_IF([test -z "$sourcelink" || test ! -e $sourcelink], [
|
|
sourcelink=../spl
|
|
])
|
|
|
|
AS_IF([test -e $sourcelink], [
|
|
splsrc=`readlink -f ${sourcelink}`
|
|
], [
|
|
AC_MSG_RESULT([Not found])
|
|
AC_MSG_ERROR([
|
|
*** Please make sure the spl devel package for your distribution
|
|
*** is installed then try again. If that fails you can specify the
|
|
*** location of the spl source with the '--with-spl=PATH' option.])
|
|
])
|
|
], [
|
|
AS_IF([test "$splsrc" = "NONE"], [
|
|
splbuild=NONE
|
|
splsrcver=NONE
|
|
])
|
|
])
|
|
|
|
AC_MSG_RESULT([$splsrc])
|
|
AC_MSG_CHECKING([spl build directory])
|
|
AS_IF([test -z "$splbuild"], [
|
|
splbuild=${splsrc}
|
|
])
|
|
AC_MSG_RESULT([$splbuild])
|
|
|
|
AC_MSG_CHECKING([spl source version])
|
|
AS_IF([test -r $splbuild/spl_config.h &&
|
|
fgrep -q SPL_META_VERSION $splbuild/spl_config.h], [
|
|
|
|
splsrcver=`(echo "#include <spl_config.h>";
|
|
echo "splsrcver=SPL_META_VERSION-SPL_META_RELEASE") |
|
|
cpp -I $splbuild |
|
|
grep "^splsrcver=" | tr -d \" | cut -d= -f2`
|
|
])
|
|
|
|
AS_IF([test -z "$splsrcver"], [
|
|
AC_MSG_RESULT([Not found])
|
|
AC_MSG_ERROR([
|
|
*** Cannot determine the version of the spl source.
|
|
*** Please prepare the spl source before running this script])
|
|
])
|
|
|
|
AC_MSG_RESULT([$splsrcver])
|
|
|
|
SPL=${splsrc}
|
|
SPL_OBJ=${splbuild}
|
|
SPL_VERSION=${splsrcver}
|
|
|
|
AC_SUBST(SPL)
|
|
AC_SUBST(SPL_OBJ)
|
|
AC_SUBST(SPL_VERSION)
|
|
|
|
ZFS_AC_SPL_MODULE_SYMVERS
|
|
])
|
|
|
|
dnl #
|
|
dnl # Certain kernel build options are not supported. These must be
|
|
dnl # detected at configure time and cause a build failure. Otherwise
|
|
dnl # modules may be successfully built that behave incorrectly.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [
|
|
|
|
AS_IF([test "$ZFS_META_LICENSE" = GPL], [
|
|
AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
|
|
[Define to 1 if licensed under the GPL])
|
|
])
|
|
|
|
ZFS_AC_KERNEL_CONFIG_PREEMPT
|
|
ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
|
|
])
|
|
|
|
dnl #
|
|
dnl # Check CONFIG_PREEMPT
|
|
dnl #
|
|
dnl # Premptible kernels will be supported in the future. But at the
|
|
dnl # moment there are a few places in the code which need to be updated
|
|
dnl # to accomidate them. Until that work occurs we should detect this
|
|
dnl # at configure time and fail with a sensible message. Otherwise,
|
|
dnl # people will be able to build successfully, however they will have
|
|
dnl # stability problems. See https://github.com/zfsonlinux/zfs/issues/83
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_PREEMPT], [
|
|
|
|
ZFS_LINUX_CONFIG([PREEMPT],
|
|
AC_MSG_ERROR([
|
|
*** Kernel built with CONFIG_PREEMPT which is not supported.
|
|
*** You must rebuild your kernel without this option.]), [])
|
|
])
|
|
|
|
dnl #
|
|
dnl # Check CONFIG_DEBUG_LOCK_ALLOC
|
|
dnl #
|
|
dnl # This is typically only set for debug kernels because it comes with
|
|
dnl # a performance penalty. However, when it is set it maps the non-GPL
|
|
dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol.
|
|
dnl # This will cause a failure at link time which we'd rather know about
|
|
dnl # at compile time.
|
|
dnl #
|
|
dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol
|
|
dnl # with the upstream community we add a check to detect this case.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
|
|
|
|
ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [
|
|
AC_MSG_CHECKING([whether mutex_lock() is GPL-only])
|
|
tmp_flags="$EXTRA_KCFLAGS"
|
|
ZFS_LINUX_TRY_COMPILE([
|
|
#include <linux/module.h>
|
|
#include <linux/mutex.h>
|
|
|
|
MODULE_LICENSE("$ZFS_META_LICENSE");
|
|
],[
|
|
struct mutex lock;
|
|
|
|
mutex_init(&lock);
|
|
mutex_lock(&lock);
|
|
mutex_unlock(&lock);
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_MSG_ERROR([
|
|
*** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible
|
|
*** with the CDDL license and will prevent the module linking stage
|
|
*** from succeeding. You must rebuild your kernel without this
|
|
*** option enabled.])
|
|
])
|
|
EXTRA_KCFLAGS="$tmp_flags"
|
|
], [])
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_LINUX_CONFTEST
|
|
dnl #
|
|
AC_DEFUN([ZFS_LINUX_CONFTEST], [
|
|
cat confdefs.h - <<_ACEOF >conftest.c
|
|
$1
|
|
_ACEOF
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_LANG_PROGRAM(C)([PROLOGUE], [BODY])
|
|
dnl #
|
|
m4_define([ZFS_LANG_PROGRAM], [
|
|
$1
|
|
int
|
|
main (void)
|
|
{
|
|
dnl Do *not* indent the following line: there may be CPP directives.
|
|
dnl Don't move the `;' right after for the same reason.
|
|
$2
|
|
;
|
|
return 0;
|
|
}
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
|
|
dnl #
|
|
AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [
|
|
m4_ifvaln([$1], [ZFS_LINUX_CONFTEST([$1])])
|
|
rm -Rf build && mkdir -p build
|
|
echo "obj-m := conftest.o" >build/Makefile
|
|
AS_IF(
|
|
[AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
|
|
[$4],
|
|
[_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
|
|
)
|
|
rm -Rf build
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_LINUX_TRY_COMPILE like AC_TRY_COMPILE
|
|
dnl #
|
|
AC_DEFUN([ZFS_LINUX_TRY_COMPILE],
|
|
[ZFS_LINUX_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])],
|
|
[modules],
|
|
[test -s build/conftest.o],
|
|
[$3], [$4])
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_LINUX_CONFIG
|
|
dnl #
|
|
AC_DEFUN([ZFS_LINUX_CONFIG],
|
|
[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
|
|
ZFS_LINUX_TRY_COMPILE([
|
|
#include <linux/module.h>
|
|
],[
|
|
#ifndef CONFIG_$1
|
|
#error CONFIG_$1 not #defined
|
|
#endif
|
|
],[
|
|
AC_MSG_RESULT([yes])
|
|
$2
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
$3
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # ZFS_CHECK_SYMBOL_EXPORT
|
|
dnl # check symbol exported or not
|
|
dnl #
|
|
AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT],
|
|
[AC_MSG_CHECKING([whether symbol $1 is exported])
|
|
grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
|
|
$LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null
|
|
rc=$?
|
|
AS_IF([test $rc -ne 0], [
|
|
export=0
|
|
for file in $2; do
|
|
grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX/$file" 2>/dev/null
|
|
rc=$?
|
|
AS_IF([test $rc -eq 0], [
|
|
export=1
|
|
break;
|
|
])
|
|
done
|
|
AS_IF([test $export -eq 0], [
|
|
AC_MSG_RESULT([no])
|
|
$4
|
|
], [
|
|
AC_MSG_RESULT([yes])
|
|
$3
|
|
])
|
|
], [
|
|
AC_MSG_RESULT([yes])
|
|
$3
|
|
])
|
|
])
|