dnl # dnl # Default ZFS kernel configuration dnl # AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ ZFS_AC_KERNEL ZFS_AC_QAT ZFS_AC_TEST_MODULE ZFS_AC_KERNEL_MISC_MINOR ZFS_AC_KERNEL_OBJTOOL ZFS_AC_KERNEL_CONFIG ZFS_AC_KERNEL_CTL_NAME ZFS_AC_KERNEL_PDE_DATA ZFS_AC_KERNEL_SET_FS_PWD_WITH_CONST ZFS_AC_KERNEL_2ARGS_VFS_FSYNC ZFS_AC_KERNEL_FS_STRUCT_SPINLOCK ZFS_AC_KERNEL_KUIDGID_T ZFS_AC_KERNEL_FALLOCATE ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE ZFS_AC_KERNEL_RWSEM_SPINLOCK_IS_RAW ZFS_AC_KERNEL_RWSEM_ACTIVITY ZFS_AC_KERNEL_RWSEM_ATOMIC_LONG_COUNT ZFS_AC_KERNEL_SCHED_RT_HEADER ZFS_AC_KERNEL_SCHED_SIGNAL_HEADER ZFS_AC_KERNEL_IO_SCHEDULE_TIMEOUT ZFS_AC_KERNEL_4ARGS_VFS_GETATTR ZFS_AC_KERNEL_3ARGS_VFS_GETATTR ZFS_AC_KERNEL_2ARGS_VFS_GETATTR ZFS_AC_KERNEL_USLEEP_RANGE ZFS_AC_KERNEL_KMEM_CACHE_ALLOCFLAGS ZFS_AC_KERNEL_KMEM_CACHE_CREATE_USERCOPY ZFS_AC_KERNEL_WAIT_ON_BIT ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T ZFS_AC_KERNEL_WAIT_QUEUE_HEAD_ENTRY ZFS_AC_KERNEL_INODE_LOCK ZFS_AC_KERNEL_GROUP_INFO_GID ZFS_AC_KERNEL_WRITE ZFS_AC_KERNEL_READ ZFS_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST ZFS_AC_KERNEL_DECLARE_EVENT_CLASS ZFS_AC_KERNEL_CURRENT_BIO_TAIL ZFS_AC_KERNEL_SUPER_USER_NS ZFS_AC_KERNEL_SUBMIT_BIO ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID ZFS_AC_KERNEL_TYPE_FMODE_T 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_BDEV_PHYSICAL_BLOCK_SIZE ZFS_AC_KERNEL_BIO_BVEC_ITER ZFS_AC_KERNEL_BIO_FAILFAST_DTD ZFS_AC_KERNEL_BIO_SET_DEV ZFS_AC_KERNEL_REQ_FAILFAST_MASK ZFS_AC_KERNEL_REQ_OP_DISCARD ZFS_AC_KERNEL_REQ_OP_SECURE_ERASE ZFS_AC_KERNEL_REQ_OP_FLUSH ZFS_AC_KERNEL_BIO_BI_OPF ZFS_AC_KERNEL_BIO_END_IO_T_ARGS ZFS_AC_KERNEL_BIO_BI_STATUS ZFS_AC_KERNEL_BIO_RW_BARRIER ZFS_AC_KERNEL_BIO_RW_DISCARD ZFS_AC_KERNEL_BLK_QUEUE_BDI ZFS_AC_KERNEL_BLK_QUEUE_FLAG_CLEAR ZFS_AC_KERNEL_BLK_QUEUE_FLAG_SET 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_HAVE_BIO_RW_UNPLUG ZFS_AC_KERNEL_BLK_QUEUE_HAVE_BLK_PLUG ZFS_AC_KERNEL_GET_DISK_AND_MODULE ZFS_AC_KERNEL_GET_DISK_RO ZFS_AC_KERNEL_GET_GENDISK ZFS_AC_KERNEL_HAVE_BIO_SET_OP_ATTRS ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL ZFS_AC_KERNEL_DISCARD_GRANULARITY ZFS_AC_KERNEL_CONST_XATTR_HANDLER ZFS_AC_KERNEL_XATTR_HANDLER_NAME ZFS_AC_KERNEL_XATTR_HANDLER_GET ZFS_AC_KERNEL_XATTR_HANDLER_SET ZFS_AC_KERNEL_XATTR_HANDLER_LIST ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS ZFS_AC_KERNEL_POSIX_ACL_RELEASE ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE ZFS_AC_KERNEL_POSIX_ACL_CHMOD ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS ZFS_AC_KERNEL_INODE_OPERATIONS_PERMISSION ZFS_AC_KERNEL_INODE_OPERATIONS_PERMISSION_WITH_NAMEIDATA ZFS_AC_KERNEL_INODE_OPERATIONS_CHECK_ACL ZFS_AC_KERNEL_INODE_OPERATIONS_CHECK_ACL_WITH_FLAGS ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL ZFS_AC_KERNEL_INODE_OPERATIONS_GETATTR ZFS_AC_KERNEL_INODE_SET_FLAGS ZFS_AC_KERNEL_INODE_SET_IVERSION ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE ZFS_AC_KERNEL_SHOW_OPTIONS ZFS_AC_KERNEL_FILE_INODE ZFS_AC_KERNEL_FILE_DENTRY 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_AIO_FSYNC ZFS_AC_KERNEL_MKDIR_UMODE_T ZFS_AC_KERNEL_LOOKUP_NAMEIDATA ZFS_AC_KERNEL_CREATE_NAMEIDATA ZFS_AC_KERNEL_GET_LINK ZFS_AC_KERNEL_PUT_LINK ZFS_AC_KERNEL_TMPFILE 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_SETATTR_PREPARE ZFS_AC_KERNEL_INSERT_INODE_LOCKED ZFS_AC_KERNEL_D_MAKE_ROOT ZFS_AC_KERNEL_D_OBTAIN_ALIAS ZFS_AC_KERNEL_D_PRUNE_ALIASES ZFS_AC_KERNEL_D_SET_D_OP ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA ZFS_AC_KERNEL_CONST_DENTRY_OPERATIONS ZFS_AC_KERNEL_TRUNCATE_SETSIZE ZFS_AC_KERNEL_6ARGS_SECURITY_INODE_INIT_SECURITY ZFS_AC_KERNEL_CALLBACK_SECURITY_INODE_INIT_SECURITY ZFS_AC_KERNEL_FST_MOUNT ZFS_AC_KERNEL_SHRINK ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID ZFS_AC_KERNEL_SHRINK_CONTROL_STRUCT ZFS_AC_KERNEL_SHRINKER_CALLBACK ZFS_AC_KERNEL_S_INSTANCES_LIST_HEAD ZFS_AC_KERNEL_S_D_OP ZFS_AC_KERNEL_BDI ZFS_AC_KERNEL_SET_NLINK ZFS_AC_KERNEL_ELEVATOR_CHANGE ZFS_AC_KERNEL_5ARG_SGET ZFS_AC_KERNEL_LSEEK_EXECUTE ZFS_AC_KERNEL_VFS_ITERATE ZFS_AC_KERNEL_VFS_RW_ITERATE ZFS_AC_KERNEL_GENERIC_WRITE_CHECKS ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS ZFS_AC_KERNEL_FOLLOW_DOWN_ONE ZFS_AC_KERNEL_MAKE_REQUEST_FN ZFS_AC_KERNEL_GENERIC_IO_ACCT_3ARG ZFS_AC_KERNEL_GENERIC_IO_ACCT_4ARG ZFS_AC_KERNEL_FPU ZFS_AC_KERNEL_KUID_HELPERS ZFS_AC_KERNEL_MODULE_PARAM_CALL_CONST ZFS_AC_KERNEL_RENAME_WANTS_FLAGS ZFS_AC_KERNEL_HAVE_GENERIC_SETXATTR ZFS_AC_KERNEL_CURRENT_TIME ZFS_AC_KERNEL_GLOBAL_PAGE_STATE ZFS_AC_KERNEL_ACL_HAS_REFCOUNT ZFS_AC_KERNEL_USERNS_CAPABILITIES AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ KERNEL_MAKE="$KERNEL_MAKE O=$LINUX_OBJ" ]) AC_SUBST(KERNEL_MAKE) ]) dnl # dnl # Detect name used for Module.symvers file in kernel dnl # AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ modpost=$LINUX/scripts/Makefile.modpost AC_MSG_CHECKING([kernel file name for module symbols]) AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ AS_IF([grep -q Modules.symvers $modpost], [ LINUX_SYMBOLS=Modules.symvers ], [ LINUX_SYMBOLS=Module.symvers ]) AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ AC_MSG_ERROR([ *** Please make sure the kernel devel package for your distribution *** is installed. If you are building with a custom kernel, make sure the *** kernel is configured, built, and the '--with-linux=PATH' configure *** option refers to the location of the kernel source.]) ]) ], [ LINUX_SYMBOLS=NONE ]) AC_MSG_RESULT($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 ${sourcelink}` ], [ kernelsrc="[Not found]" ]) ], [ AS_IF([test "$kernelsrc" = "NONE"], [ kernsrcver=NONE ]) withlinux=yes ]) 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]) AS_IF([test -z "$kernelbuild"], [ AS_IF([test x$withlinux != xyes -a -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]) 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]) LINUX=${kernelsrc} LINUX_OBJ=${kernelbuild} LINUX_VERSION=${kernsrcver} AC_SUBST(LINUX) AC_SUBST(LINUX_OBJ) AC_SUBST(LINUX_VERSION) ZFS_AC_MODULE_SYMVERS ]) dnl # dnl # Detect the QAT module to be built against dnl # QAT provides hardware acceleration for data compression: dnl # https://01.org/intel-quickassist-technology dnl # * Download and install QAT driver from the above link dnl # * Start QAT driver in your system: dnl # service qat_service start dnl # * Enable QAT in ZFS, e.g.: dnl # ./configure --with-qat=<qat-driver-path>/QAT1.6 dnl # make dnl # * Set GZIP compression in ZFS dataset: dnl # zfs set compression = gzip <dataset> dnl # Then the data written to this ZFS pool is compressed dnl # by QAT accelerator automatically, and de-compressed by dnl # QAT when read from the pool. dnl # * Get QAT hardware statistics by: dnl # cat /proc/icp_dh895xcc_dev/qat dnl # * To disable QAT: dnl # insmod zfs.ko zfs_qat_disable=1 dnl # AC_DEFUN([ZFS_AC_QAT], [ AC_ARG_WITH([qat], AS_HELP_STRING([--with-qat=PATH], [Path to qat source]), AS_IF([test "$withval" = "yes"], AC_MSG_ERROR([--with-qat=PATH requires a PATH]), [qatsrc="$withval"])) AC_ARG_WITH([qat-obj], AS_HELP_STRING([--with-qat-obj=PATH], [Path to qat build objects]), [qatbuild="$withval"]) AS_IF([test ! -z "${qatsrc}"], [ AC_MSG_CHECKING([qat source directory]) AC_MSG_RESULT([$qatsrc]) QAT_SRC="${qatsrc}/quickassist" AS_IF([ test ! -e "$QAT_SRC/include/cpa.h"], [ AC_MSG_ERROR([ *** Please make sure the qat driver package is installed *** and specify the location of the qat source with the *** '--with-qat=PATH' option then try again. Failed to *** find cpa.h in: ${QAT_SRC}/include]) ]) ]) AS_IF([test ! -z "${qatsrc}"], [ AC_MSG_CHECKING([qat build directory]) AS_IF([test -z "$qatbuild"], [ qatbuild="${qatsrc}/build" ]) AC_MSG_RESULT([$qatbuild]) QAT_OBJ=${qatbuild} AS_IF([ ! test -e "$QAT_OBJ/icp_qa_al.ko" && ! test -e "$QAT_OBJ/qat_api.ko"], [ AC_MSG_ERROR([ *** Please make sure the qat driver is installed then try again. *** Failed to find icp_qa_al.ko or qat_api.ko in: $QAT_OBJ]) ]) AC_SUBST(QAT_SRC) AC_SUBST(QAT_OBJ) AC_DEFINE(HAVE_QAT, 1, [qat is enabled and existed]) ]) dnl # dnl # Detect the name used for the QAT Module.symvers file. dnl # AS_IF([test ! -z "${qatsrc}"], [ AC_MSG_CHECKING([qat file for module symbols]) QAT_SYMBOLS=$QAT_SRC/lookaside/access_layer/src/Module.symvers AS_IF([test -r $QAT_SYMBOLS], [ AC_MSG_RESULT([$QAT_SYMBOLS]) AC_SUBST(QAT_SYMBOLS) ],[ AC_MSG_ERROR([ *** Please make sure the qat driver is installed then try again. *** Failed to find Module.symvers in: $QAT_SYMBOLS]) ]) ]) ]) ]) dnl # dnl # Basic toolchain sanity check. dnl # AC_DEFUN([ZFS_AC_TEST_MODULE], [ AC_MSG_CHECKING([whether modules can be built]) ZFS_LINUX_TRY_COMPILE([],[],[ AC_MSG_RESULT([yes]) ],[ AC_MSG_RESULT([no]) if test "x$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], [ AS_IF([test "x$cross_compiling" != xyes], [ AC_RUN_IFELSE([ AC_LANG_PROGRAM([ #include "$LINUX/include/linux/license.h" ], [ return !license_is_gpl_compatible("$ZFS_META_LICENSE"); ]) ], [ AC_DEFINE([ZFS_IS_GPL_COMPATIBLE], [1], [Define to 1 if GPL-only symbols can be used]) ], [ ]) ]) ZFS_AC_KERNEL_CONFIG_THREAD_SIZE ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE ]) dnl # dnl # Check configured THREAD_SIZE dnl # dnl # The stack size will vary by architecture, but as of Linux 3.15 on x86_64 dnl # the default thread stack size was increased to 16K from 8K. Therefore, dnl # on newer kernels and some architectures stack usage optimizations can be dnl # conditionally applied to improve performance without negatively impacting dnl # stability. dnl # AC_DEFUN([ZFS_AC_KERNEL_CONFIG_THREAD_SIZE], [ AC_MSG_CHECKING([whether kernel was built with 16K or larger stacks]) ZFS_LINUX_TRY_COMPILE([ #include <linux/module.h> ],[ #if (THREAD_SIZE < 16384) #error "THREAD_SIZE is less than 16K" #endif ],[ AC_MSG_RESULT([yes]) AC_DEFINE(HAVE_LARGE_STACKS, 1, [kernel has large stacks]) ],[ AC_MSG_RESULT([no]) ]) ]) dnl # dnl # Check CONFIG_DEBUG_LOCK_ALLOC dnl # dnl # This is typically only set for debug kernels because it comes with dnl # a performance penalty. However, when it is set it maps the non-GPL dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol. dnl # This will cause a failure at link time which we'd rather know about dnl # at compile time. dnl # dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol dnl # with the upstream community we add a check to detect this case. dnl # AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [ ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [ AC_MSG_CHECKING([whether mutex_lock() is GPL-only]) tmp_flags="$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 # Check CONFIG_TRIM_UNUSED_KSYMS dnl # dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS disabled. dnl # AC_DEFUN([ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS], [ AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled]) ZFS_LINUX_TRY_COMPILE([ #if defined(CONFIG_TRIM_UNUSED_KSYMS) #error CONFIG_TRIM_UNUSED_KSYMS not defined #endif ],[ ],[ AC_MSG_RESULT([yes]) ],[ AC_MSG_RESULT([no]) AC_MSG_ERROR([ *** This kernel has unused symbols trimming enabled, please disable. *** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.]) ]) ]) dnl # dnl # ZFS_LINUX_CONFTEST_H dnl # AC_DEFUN([ZFS_LINUX_CONFTEST_H], [ cat - <<_ACEOF >conftest.h $1 _ACEOF ]) dnl # dnl # ZFS_LINUX_CONFTEST_C dnl # AC_DEFUN([ZFS_LINUX_CONFTEST_C], [ 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_C([$1])]) m4_ifvaln([$6], [ZFS_LINUX_CONFTEST_H([$6])], [ZFS_LINUX_CONFTEST_H([])]) rm -Rf build && mkdir -p build && touch build/conftest.mod.c echo "obj-m := conftest.o" >build/Makefile modpost_flag='' test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage AS_IF( [AC_TRY_COMMAND(cp conftest.c conftest.h build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror $FRAME_LARGER_THAN $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/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 kernel 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], [ 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/$file" 2>/dev/null rc=$? if test $rc -eq 0; then export=1 break; fi done if test $export -eq 0; then : $4 else : $3 fi 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 ]) dnl # dnl # ZFS_LINUX_TRY_COMPILE_HEADER dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are dnl # provided via the fifth parameter dnl # AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ZFS_LINUX_COMPILE_IFELSE( [AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])], [modules], [test -s build/conftest.o], [$3], [$4], [$5]) ])