mirror of https://github.com/openzfs/zfs.git
443 lines
12 KiB
Plaintext
443 lines
12 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_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_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 #
|
|
dnl # CONFIG_PREEMPT - Preempt kernels require special handling.
|
|
dnl #
|
|
dnl # There are certain kernel build options which when enabled are
|
|
dnl # completely incompatible with non GPL kernel modules. It is best
|
|
dnl # to detect these at configure time and fail with a clear error
|
|
dnl # rather than build everything and fail during linking.
|
|
dnl #
|
|
dnl # CONFIG_DEBUG_LOCK_ALLOC - Maps mutex_lock() to mutex_lock_nested()
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [
|
|
|
|
ZFS_LINUX_CONFIG([PREEMPT],
|
|
AC_MSG_ERROR([
|
|
*** Kernel built with CONFIG_PREEMPT which is not supported.
|
|
*** You must rebuild your kernel without this option.]), [])
|
|
|
|
AS_IF([test "$ZFS_META_LICENSE" = CDDL], [
|
|
ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC],
|
|
AC_MSG_ERROR([
|
|
*** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is
|
|
*** incompatible with the CDDL license. You must rebuild
|
|
*** your kernel without this option.]), [])
|
|
])
|
|
|
|
AS_IF([test "$ZFS_META_LICENSE" = GPL], [
|
|
AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
|
|
[Define to 1 if licensed under the GPL])
|
|
])
|
|
])
|
|
|
|
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
|
|
])
|
|
])
|