AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL
ZFS_AC_SPL
+ ZFS_AC_TEST_MODULE
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_3ARG_BLKDEV_GET
+ ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE
+ ZFS_AC_KERNEL_LOOKUP_BDEV
ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS
ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE
- ZFS_AC_KERNEL_BIO_EMPTY_BARRIER
+ ZFS_AC_KERNEL_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BIO_FAILFAST
ZFS_AC_KERNEL_BIO_FAILFAST_DTD
ZFS_AC_KERNEL_REQ_FAILFAST_MASK
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_GET_GENDISK
ZFS_AC_KERNEL_RQ_IS_SYNC
ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT
+ ZFS_AC_KERNEL_DISCARD_GRANULARITY
ZFS_AC_KERNEL_CONST_XATTR_HANDLER
-
- if test "$LINUX_OBJ" != "$LINUX"; then
+ 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_DIRTY_INODE_WITH_FLAGS
+ ZFS_AC_KERNEL_NR_CACHED_OBJECTS
+ ZFS_AC_KERNEL_FREE_CACHED_OBJECTS
+ ZFS_AC_KERNEL_FALLOCATE
+ ZFS_AC_KERNEL_MKDIR_UMODE_T
+ ZFS_AC_KERNEL_LOOKUP_NAMEIDATA
+ ZFS_AC_KERNEL_CREATE_NAMEIDATA
+ ZFS_AC_KERNEL_TRUNCATE_RANGE
+ ZFS_AC_KERNEL_AUTOMOUNT
+ ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE
+ ZFS_AC_KERNEL_COMMIT_METADATA
+ ZFS_AC_KERNEL_CLEAR_INODE
+ ZFS_AC_KERNEL_INSERT_INODE_LOCKED
+ ZFS_AC_KERNEL_D_MAKE_ROOT
+ ZFS_AC_KERNEL_D_OBTAIN_ALIAS
+ ZFS_AC_KERNEL_D_SET_D_OP
+ ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA
+ ZFS_AC_KERNEL_CONST_DENTRY_OPERATIONS
+ 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_S_D_OP
+ ZFS_AC_KERNEL_BDI
+ ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER
+ ZFS_AC_KERNEL_SET_NLINK
+ ZFS_AC_KERNEL_ELEVATOR_CHANGE
+ ZFS_AC_KERNEL_5ARG_SGET
+
+ AS_IF([test "$LINUX_OBJ" != "$LINUX"], [
KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
- fi
+ ])
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="$KERNELCPPFLAGS -DTEXT_DOMAIN=\\\"zfs-linux-kernel\\\""
AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [
modpost=$LINUX/scripts/Makefile.modpost
AC_MSG_CHECKING([kernel file name for module symbols])
- if test -f "$modpost"; then
- if grep -q Modules.symvers $modpost; then
+ AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [
+ AS_IF([grep -q Modules.symvers $modpost], [
LINUX_SYMBOLS=Modules.symvers
- else
+ ], [
LINUX_SYMBOLS=Module.symvers
- fi
- else
+ ])
+
+ AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [
+ AC_MSG_ERROR([
+ *** Please make sure the kernel devel package for your distribution
+ *** is installed. If you are building with a custom kernel, make sure the
+ *** kernel is configured, built, and the '--with-linux=PATH' configure
+ *** option refers to the location of the kernel source.])
+ ])
+ ], [
LINUX_SYMBOLS=NONE
- fi
+ ])
AC_MSG_RESULT($LINUX_SYMBOLS)
AC_SUBST(LINUX_SYMBOLS)
])
[kernelbuild="$withval"])
AC_MSG_CHECKING([kernel source directory])
- if test -z "$kernelsrc"; then
- if test -e "/lib/modules/$(uname -r)/source"; then
+ AS_IF([test -z "$kernelsrc"], [
+ AS_IF([test -e "/lib/modules/$(uname -r)/source"], [
headersdir="/lib/modules/$(uname -r)/source"
sourcelink=$(readlink -f "$headersdir")
- elif test -e "/lib/modules/$(uname -r)/build"; then
+ ], [test -e "/lib/modules/$(uname -r)/build"], [
headersdir="/lib/modules/$(uname -r)/build"
sourcelink=$(readlink -f "$headersdir")
- else
+ ], [
sourcelink=$(ls -1d /usr/src/kernels/* \
- /usr/src/linux-* \
+ /usr/src/linux-* \
2>/dev/null | grep -v obj | tail -1)
- fi
+ ])
- if test -n "$sourcelink" && test -e ${sourcelink}; then
+ AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [
kernelsrc=`readlink -f ${sourcelink}`
- else
- AC_MSG_RESULT([Not found])
- AC_MSG_ERROR([
- *** Please make sure the kernel devel package for your distribution
- *** is installed then try again. If that fails you can specify the
- *** location of the kernel source with the '--with-linux=PATH' option.])
- fi
- else
- if test "$kernelsrc" = "NONE"; then
+ ], [
+ kernelsrc="[Not found]"
+ ])
+ ], [
+ AS_IF([test "$kernelsrc" = "NONE"], [
kernsrcver=NONE
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$kernelsrc])
+ AS_IF([test ! -d "$kernelsrc"], [
+ AC_MSG_ERROR([
+ *** Please make sure the kernel devel package for your distribution
+ *** is installed and then try again. If that fails, you can specify the
+ *** location of the kernel source with the '--with-linux=PATH' option.])
+ ])
+
AC_MSG_CHECKING([kernel build directory])
- if test -z "$kernelbuild"; then
- if test -e "/lib/modules/$(uname -r)/build"; then
+ AS_IF([test -z "$kernelbuild"], [
+ AS_IF([test -e "/lib/modules/$(uname -r)/build"], [
kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
- elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then
+ ], [test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}], [
kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
- elif test -d ${kernelsrc}-obj/${target_cpu}/default; then
- kernelbuild=${kernelsrc}-obj/${target_cpu}/default
- elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then
+ ], [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}
- else
+ ], [
kernelbuild=${kernelsrc}
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$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
- if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then
+ AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1], [
utsrelease=linux/version.h
- elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then
+ ], [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2], [
utsrelease=linux/utsrelease.h
- elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then
+ ], [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3], [
utsrelease=generated/utsrelease.h
- fi
+ ])
- if test "$utsrelease"; then
+ AS_IF([test "$utsrelease"], [
kernsrcver=`(echo "#include <$utsrelease>";
echo "kernsrcver=UTS_RELEASE") |
cpp -I $kernelbuild/include |
grep "^kernsrcver=" | cut -d \" -f 2`
- if test -z "$kernsrcver"; then
+ AS_IF([test -z "$kernsrcver"], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([*** Cannot determine kernel version.])
- fi
- else
+ ])
+ ], [
AC_MSG_RESULT([Not found])
- AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
- fi
+ if test "x$enable_linux_builtin" != xyes; then
+ AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
+ else
+ AC_MSG_ERROR([
+ *** Cannot find UTS_RELEASE definition.
+ *** Please run 'make prepare' inside the kernel source tree.])
+ fi
+ ])
AC_MSG_RESULT([$kernsrcver])
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])
- if test -r $SPL_OBJ/Module.symvers; then
- SPL_SYMBOLS=Module.symvers
- elif test -r $SPL_OBJ/Modules.symvers; then
- SPL_SYMBOLS=Modules.symvers
- elif test -r $SPL_OBJ/module/Module.symvers; then
- SPL_SYMBOLS=Module.symvers
- elif test -r $SPL_OBJ/module/Modules.symvers; then
- SPL_SYMBOLS=Modules.symvers
- else
- SPL_SYMBOLS=$LINUX_SYMBOLS
- fi
-
- AC_MSG_RESULT([$SPL_SYMBOLS])
- AC_SUBST(SPL_SYMBOLS)
-])
dnl #
dnl # Detect the SPL module to be built against
[Path to spl build objects]),
[splbuild="$withval"])
+ AC_ARG_WITH([spl-timeout],
+ AS_HELP_STRING([--with-spl-timeout=SECS],
+ [Wait SECS for SPL header and symver file @<:@default=0@:>@]),
+ [timeout="$withval"], [timeout=0])
+
+ dnl #
+ dnl # The existence of spl.release.in is used to identify a valid
+ dnl # source directory. In order of preference:
+ dnl #
+ splsrc0="/var/lib/dkms/spl/${VERSION}/build"
+ splsrc1="/usr/src/spl-${VERSION}/${LINUX_VERSION}"
+ splsrc2="/usr/src/spl-${VERSION}"
+ splsrc3="../spl/"
+ splsrc4="$LINUX"
AC_MSG_CHECKING([spl source directory])
- if test -z "$splsrc"; then
- sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \
- 2>/dev/null | tail -1`
-
- if test -z "$sourcelink" || test ! -e $sourcelink; then
- sourcelink=../spl
- fi
-
- if test -e $sourcelink; then
- splsrc=`readlink -f ${sourcelink}`
- else
- AC_MSG_RESULT([Not found])
- AC_MSG_ERROR([
- *** Please make sure the spl devel package for your distribution
- *** is installed then try again. If that fails you can specify the
- *** location of the spl source with the '--with-spl=PATH' option.])
- fi
- else
- if test "$splsrc" = "NONE"; then
+ AS_IF([test -z "${splsrc}"], [
+ AS_IF([ test -e "${splsrc0}/spl.release.in"], [
+ splsrc=${splsrc0}
+ ], [ test -e "${splsrc1}/spl.release.in"], [
+ splsrc=${splsrc1}
+ ], [ test -e "${splsrc2}/spl.release.in"], [
+ splsrc=${splsrc2}
+ ], [ test -e "${splsrc3}/spl.release.in"], [
+ splsrc=$(readlink -f "${splsrc3}")
+ ], [ test -e "${splsrc4}/spl.release.in" ], [
+ splsrc=${splsrc4}
+ ], [
+ splsrc="[Not found]"
+ ])
+ ], [
+ AS_IF([test "$splsrc" = "NONE"], [
splbuild=NONE
splsrcver=NONE
- fi
- fi
+ ])
+ ])
AC_MSG_RESULT([$splsrc])
+ AS_IF([ test ! -e "$splsrc/spl.release.in"], [
+ AC_MSG_ERROR([
+ *** Please make sure the kmod spl devel package for your distribution
+ *** is installed then try again. If that fails you can specify the
+ *** location of the spl source with the '--with-spl=PATH' option.])
+ ])
+
+ dnl #
+ dnl # The existence of the spl_config.h is used to identify a valid
+ dnl # spl object directory. In many cases the object and source
+ dnl # directory are the same, however the objects may also reside
+ dnl # is a subdirectory named after the kernel version.
+ dnl #
+ dnl # This file is supposed to be available after DKMS finishes
+ dnl # building the SPL kernel module for the target kernel. The
+ dnl # '--with-spl-timeout' option can be passed to pause here,
+ dnl # waiting for the file to appear from a concurrently building
+ dnl # SPL package.
+ dnl #
AC_MSG_CHECKING([spl build directory])
- if test -z "$splbuild"; then
- splbuild=${splsrc}
- fi
+ while true; do
+ AS_IF([test -z "$splbuild"], [
+ AS_IF([ test -e "${splsrc}/${LINUX_VERSION}/spl_config.h" ], [
+ splbuild="${splsrc}/${LINUX_VERSION}"
+ ], [ test -e "${splsrc}/spl_config.h" ], [
+ splbuild="${splsrc}"
+ ], [
+ splbuild="[Not found]"
+ ])
+ ])
+ AS_IF([test -e "$splbuild/spl_config.h" -o $timeout -le 0], [
+ break;
+ ], [
+ sleep 1
+ timeout=$((timeout-1))
+ ])
+ done
+
AC_MSG_RESULT([$splbuild])
+ AS_IF([ ! test -e "$splbuild/spl_config.h"], [
+ AC_MSG_ERROR([
+ *** Please make sure the kmod spl devel <kernel> package for your
+ *** distribution is installed then try again. If that fails you
+ *** can specify the location of the spl objects with the
+ *** '--with-spl-obj=PATH' option.])
+ ])
AC_MSG_CHECKING([spl source version])
- if test -r $splbuild/spl_config.h &&
- fgrep -q SPL_META_VERSION $splbuild/spl_config.h; then
+ 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") |
+ echo "splsrcver=SPL_META_VERSION-SPL_META_RELEASE") |
cpp -I $splbuild |
- grep "^splsrcver=" | cut -d \" -f 2`
- fi
+ grep "^splsrcver=" | tr -d \" | cut -d= -f2`
+ ])
- if test -z "$splsrcver"; then
+ AS_IF([test -z "$splsrcver"], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([
- *** Cannot determine the version of the spl source.
- *** Please prepare the spl source before running this script])
- fi
+ *** Cannot determine the version of the spl source.
+ *** Please prepare the spl source before running this script])
+ ])
AC_MSG_RESULT([$splsrcver])
AC_SUBST(SPL_OBJ)
AC_SUBST(SPL_VERSION)
- ZFS_AC_SPL_MODULE_SYMVERS
+ dnl #
+ dnl # Detect the name used for the SPL Module.symvers file. If one
+ dnl # does not exist this is likely because the SPL has been configured
+ dnl # but not built. The '--with-spl-timeout' option can be passed
+ dnl # to pause here, waiting for the file to appear from a concurrently
+ dnl # building SPL package. If the file does not appear in time, a good
+ dnl # guess is made as to what this file will be named based on what it
+ dnl # is named in the kernel build products. This file will first be
+ dnl # used at link time so if the guess is wrong the build will fail
+ dnl # then. This unfortunately means the ZFS package does not contain a
+ dnl # reliable mechanism to detect symbols exported by the SPL at
+ dnl # configure time.
+ dnl #
+ AC_MSG_CHECKING([spl file name for module symbols])
+ SPL_SYMBOLS=NONE
+
+ while true; do
+ 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
+ ])
+
+ AS_IF([test $SPL_SYMBOLS != NONE -o $timeout -le 0], [
+ break;
+ ], [
+ sleep 1
+ timeout=$((timeout-1))
+ ])
+ done
+
+ AS_IF([test "$SPL_SYMBOLS" = NONE], [
+ SPL_SYMBOLS=$LINUX_SYMBOLS
+ ])
+
+ AC_MSG_RESULT([$SPL_SYMBOLS])
+ AC_SUBST(SPL_SYMBOLS)
])
dnl #
-dnl # There are certain kernel build options which when enabled are
-dnl # completely incompatible with non GPL kernel modules. It is best
-dnl # to detect these at configure time and fail with a clear error
-dnl # rather than build everything and fail during linking.
+dnl # Basic toolchain sanity check.
dnl #
-dnl # CONFIG_DEBUG_LOCK_ALLOC - Maps mutex_lock() to mutex_lock_nested()
+AC_DEFUN([ZFS_AC_TEST_MODULE],
+ [AC_MSG_CHECKING([whether modules can be built])
+ ZFS_LINUX_TRY_COMPILE([],[],[
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+ if test "x$enable_linux_builtin" != xyes; then
+ AC_MSG_ERROR([*** Unable to build an empty module.])
+ else
+ AC_MSG_ERROR([
+ *** Unable to build an empty module.
+ *** Please run 'make scripts' inside the kernel source tree.])
+ fi
+ ])
+])
+
+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], [
- if test "$ZFS_META_LICENSE" = CDDL; then
- ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC],
- AC_MSG_ERROR([
- *** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is
- *** incompatible with the CDDL license. You must rebuild
- *** your kernel without this option.]), [])
- fi
-
- if test "$ZFS_META_LICENSE" = GPL; then
+ AS_IF([test "$ZFS_META_LICENSE" = GPL], [
AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
[Define to 1 if licensed under the GPL])
- fi
+ ])
+
+ ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
+])
+
+dnl #
+dnl # Check CONFIG_DEBUG_LOCK_ALLOC
+dnl #
+dnl # This is typically only set for debug kernels because it comes with
+dnl # a performance penalty. However, when it is set it maps the non-GPL
+dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol.
+dnl # This will cause a failure at link time which we'd rather know about
+dnl # at compile time.
+dnl #
+dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol
+dnl # with the upstream community we add a check to detect this case.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
+
+ ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [
+ AC_MSG_CHECKING([whether mutex_lock() is GPL-only])
+ tmp_flags="$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 #
AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [
m4_ifvaln([$1], [ZFS_LINUX_CONFTEST([$1])])
- rm -Rf build && mkdir -p build
+ rm -Rf build && mkdir -p build && touch build/conftest.mod.c
echo "obj-m := conftest.o" >build/Makefile
+ modpost_flag=''
+ test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
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])],
+ [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])],
[$4],
[_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
)
AC_DEFUN([ZFS_LINUX_CONFIG],
[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
ZFS_LINUX_TRY_COMPILE([
- #ifndef AUTOCONF_INCLUDED
- #include <linux/config.h>
- #endif
+ #include <linux/module.h>
],[
#ifndef CONFIG_$1
#error CONFIG_$1 not #defined
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])
+AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [
grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
$LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null
rc=$?
if test $rc -ne 0; then
export=0
for file in $2; do
- grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX/$file" 2>/dev/null
+ grep -q -E "EXPORT_SYMBOL.*($1)" \
+ "$LINUX/$file" 2>/dev/null
rc=$?
- if test $rc -eq 0; then
- export=1
- break;
- fi
+ if test $rc -eq 0; then
+ export=1
+ break;
+ fi
done
- if test $export -eq 0; then
- AC_MSG_RESULT([no])
+ if test $export -eq 0; then :
$4
- else
- AC_MSG_RESULT([yes])
+ else :
$3
fi
- else
- AC_MSG_RESULT([yes])
+ else :
$3
fi
])
+
+dnl #
+dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL
+dnl # like ZFS_LINUX_TRY_COMPILE, except ZFS_CHECK_SYMBOL_EXPORT
+dnl # is called if not compiling for builtin
+dnl #
+AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [
+ ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1])
+ if test $rc -ne 0; then :
+ $6
+ else
+ if test "x$enable_linux_builtin" != xyes; then
+ ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1])
+ fi
+ if test $rc -ne 0; then :
+ $6
+ else :
+ $5
+ fi
+ fi
+])
git://git.camperquake.de / zfs.git / blobdiff