1dnl # 2dnl # Default ZFS kernel configuration 3dnl # 4AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ 5 AM_COND_IF([BUILD_LINUX], [ 6 dnl # Setup the kernel build environment. 7 ZFS_AC_KERNEL 8 ZFS_AC_QAT 9 10 dnl # Sanity checks for module building and CONFIG_* defines 11 ZFS_AC_KERNEL_CONFIG_DEFINED 12 ZFS_AC_MODULE_SYMVERS 13 14 dnl # Sequential ZFS_LINUX_TRY_COMPILE tests 15 ZFS_AC_KERNEL_FPU_HEADER 16 ZFS_AC_KERNEL_OBJTOOL_HEADER 17 ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T 18 ZFS_AC_KERNEL_MISC_MINOR 19 ZFS_AC_KERNEL_DECLARE_EVENT_CLASS 20 21 dnl # Parallel ZFS_LINUX_TEST_SRC / ZFS_LINUX_TEST_RESULT tests 22 ZFS_AC_KERNEL_TEST_SRC 23 ZFS_AC_KERNEL_TEST_RESULT 24 25 AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ 26 KERNEL_MAKE="$KERNEL_MAKE O=$LINUX_OBJ" 27 ]) 28 29 AC_SUBST(KERNEL_MAKE) 30 ]) 31]) 32 33dnl # 34dnl # Generate and compile all of the kernel API test cases to determine 35dnl # which interfaces are available. By invoking the kernel build system 36dnl # only once the compilation can be done in parallel significantly 37dnl # speeding up the process. 38dnl # 39AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [ 40 ZFS_AC_KERNEL_SRC_OBJTOOL 41 ZFS_AC_KERNEL_SRC_GLOBAL_PAGE_STATE 42 ZFS_AC_KERNEL_SRC_ACCESS_OK_TYPE 43 ZFS_AC_KERNEL_SRC_PDE_DATA 44 ZFS_AC_KERNEL_SRC_FALLOCATE 45 ZFS_AC_KERNEL_SRC_FADVISE 46 ZFS_AC_KERNEL_SRC_GENERIC_FADVISE 47 ZFS_AC_KERNEL_SRC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 48 ZFS_AC_KERNEL_SRC_RWSEM 49 ZFS_AC_KERNEL_SRC_SCHED 50 ZFS_AC_KERNEL_SRC_USLEEP_RANGE 51 ZFS_AC_KERNEL_SRC_KMEM_CACHE 52 ZFS_AC_KERNEL_SRC_KVMALLOC 53 ZFS_AC_KERNEL_SRC_VMALLOC_PAGE_KERNEL 54 ZFS_AC_KERNEL_SRC_WAIT 55 ZFS_AC_KERNEL_SRC_INODE_TIMES 56 ZFS_AC_KERNEL_SRC_INODE_LOCK 57 ZFS_AC_KERNEL_SRC_GROUP_INFO_GID 58 ZFS_AC_KERNEL_SRC_RW 59 ZFS_AC_KERNEL_SRC_TIMER_SETUP 60 ZFS_AC_KERNEL_SRC_SUPER_USER_NS 61 ZFS_AC_KERNEL_SRC_PROC_OPERATIONS 62 ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS 63 ZFS_AC_KERNEL_SRC_BIO 64 ZFS_AC_KERNEL_SRC_BLKDEV 65 ZFS_AC_KERNEL_SRC_BLK_QUEUE 66 ZFS_AC_KERNEL_SRC_GENHD_FLAGS 67 ZFS_AC_KERNEL_SRC_REVALIDATE_DISK 68 ZFS_AC_KERNEL_SRC_GET_DISK_RO 69 ZFS_AC_KERNEL_SRC_GENERIC_READLINK_GLOBAL 70 ZFS_AC_KERNEL_SRC_DISCARD_GRANULARITY 71 ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE 72 ZFS_AC_KERNEL_SRC_XATTR 73 ZFS_AC_KERNEL_SRC_ACL 74 ZFS_AC_KERNEL_SRC_INODE_SETATTR 75 ZFS_AC_KERNEL_SRC_INODE_GETATTR 76 ZFS_AC_KERNEL_SRC_INODE_SET_FLAGS 77 ZFS_AC_KERNEL_SRC_INODE_SET_IVERSION 78 ZFS_AC_KERNEL_SRC_SHOW_OPTIONS 79 ZFS_AC_KERNEL_SRC_FILE_INODE 80 ZFS_AC_KERNEL_SRC_FILE_DENTRY 81 ZFS_AC_KERNEL_SRC_FSYNC 82 ZFS_AC_KERNEL_SRC_AIO_FSYNC 83 ZFS_AC_KERNEL_SRC_EVICT_INODE 84 ZFS_AC_KERNEL_SRC_DIRTY_INODE 85 ZFS_AC_KERNEL_SRC_SHRINKER 86 ZFS_AC_KERNEL_SRC_MKDIR 87 ZFS_AC_KERNEL_SRC_LOOKUP_FLAGS 88 ZFS_AC_KERNEL_SRC_CREATE 89 ZFS_AC_KERNEL_SRC_PERMISSION 90 ZFS_AC_KERNEL_SRC_GET_LINK 91 ZFS_AC_KERNEL_SRC_PUT_LINK 92 ZFS_AC_KERNEL_SRC_TMPFILE 93 ZFS_AC_KERNEL_SRC_AUTOMOUNT 94 ZFS_AC_KERNEL_SRC_ENCODE_FH_WITH_INODE 95 ZFS_AC_KERNEL_SRC_COMMIT_METADATA 96 ZFS_AC_KERNEL_SRC_CLEAR_INODE 97 ZFS_AC_KERNEL_SRC_SETATTR_PREPARE 98 ZFS_AC_KERNEL_SRC_INSERT_INODE_LOCKED 99 ZFS_AC_KERNEL_SRC_DENTRY 100 ZFS_AC_KERNEL_SRC_DENTRY_ALIAS_D_U 101 ZFS_AC_KERNEL_SRC_TRUNCATE_SETSIZE 102 ZFS_AC_KERNEL_SRC_SECURITY_INODE 103 ZFS_AC_KERNEL_SRC_FST_MOUNT 104 ZFS_AC_KERNEL_SRC_BDI 105 ZFS_AC_KERNEL_SRC_SET_NLINK 106 ZFS_AC_KERNEL_SRC_SGET 107 ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE 108 ZFS_AC_KERNEL_SRC_VFS_FILEMAP_DIRTY_FOLIO 109 ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO 110 ZFS_AC_KERNEL_SRC_VFS_GETATTR 111 ZFS_AC_KERNEL_SRC_VFS_FSYNC_2ARGS 112 ZFS_AC_KERNEL_SRC_VFS_ITERATE 113 ZFS_AC_KERNEL_SRC_VFS_DIRECT_IO 114 ZFS_AC_KERNEL_SRC_VFS_READPAGES 115 ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS 116 ZFS_AC_KERNEL_SRC_VFS_RW_ITERATE 117 ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS 118 ZFS_AC_KERNEL_SRC_VFS_IOV_ITER 119 ZFS_AC_KERNEL_SRC_VFS_COPY_FILE_RANGE 120 ZFS_AC_KERNEL_SRC_VFS_GENERIC_COPY_FILE_RANGE 121 ZFS_AC_KERNEL_SRC_VFS_SPLICE_COPY_FILE_RANGE 122 ZFS_AC_KERNEL_SRC_VFS_REMAP_FILE_RANGE 123 ZFS_AC_KERNEL_SRC_VFS_CLONE_FILE_RANGE 124 ZFS_AC_KERNEL_SRC_VFS_DEDUPE_FILE_RANGE 125 ZFS_AC_KERNEL_SRC_VFS_FILE_OPERATIONS_EXTEND 126 ZFS_AC_KERNEL_SRC_KMAP_ATOMIC_ARGS 127 ZFS_AC_KERNEL_SRC_FOLLOW_DOWN_ONE 128 ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN 129 ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT 130 ZFS_AC_KERNEL_SRC_FPU 131 ZFS_AC_KERNEL_SRC_FMODE_T 132 ZFS_AC_KERNEL_SRC_KUIDGID_T 133 ZFS_AC_KERNEL_SRC_KUID_HELPERS 134 ZFS_AC_KERNEL_SRC_RENAME 135 ZFS_AC_KERNEL_SRC_CURRENT_TIME 136 ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES 137 ZFS_AC_KERNEL_SRC_IN_COMPAT_SYSCALL 138 ZFS_AC_KERNEL_SRC_KTIME 139 ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC 140 ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES 141 ZFS_AC_KERNEL_SRC_KSTRTOUL 142 ZFS_AC_KERNEL_SRC_PERCPU 143 ZFS_AC_KERNEL_SRC_CPU_HOTPLUG 144 ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR 145 ZFS_AC_KERNEL_SRC_MKNOD 146 ZFS_AC_KERNEL_SRC_SYMLINK 147 ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS 148 ZFS_AC_KERNEL_SRC_SIGNAL_STOP 149 ZFS_AC_KERNEL_SRC_SIGINFO 150 ZFS_AC_KERNEL_SRC_SYSFS 151 ZFS_AC_KERNEL_SRC_SET_SPECIAL_STATE 152 ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG 153 ZFS_AC_KERNEL_SRC_STRLCPY 154 ZFS_AC_KERNEL_SRC_STRSCPY 155 ZFS_AC_KERNEL_SRC_PAGEMAP_FOLIO_WAIT_BIT 156 ZFS_AC_KERNEL_SRC_ADD_DISK 157 ZFS_AC_KERNEL_SRC_KTHREAD 158 ZFS_AC_KERNEL_SRC_ZERO_PAGE 159 ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC 160 ZFS_AC_KERNEL_SRC_USER_NS_COMMON_INUM 161 ZFS_AC_KERNEL_SRC_IDMAP_MNT_API 162 ZFS_AC_KERNEL_SRC_IDMAP_NO_USERNS 163 ZFS_AC_KERNEL_SRC_IATTR_VFSID 164 ZFS_AC_KERNEL_SRC_FILEMAP 165 ZFS_AC_KERNEL_SRC_WRITEPAGE_T 166 ZFS_AC_KERNEL_SRC_RECLAIMED 167 ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE 168 ZFS_AC_KERNEL_SRC_COPY_SPLICE_READ 169 ZFS_AC_KERNEL_SRC_SYNC_BDEV 170 ZFS_AC_KERNEL_SRC_MM_PAGE_SIZE 171 case "$host_cpu" in 172 powerpc*) 173 ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE 174 ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE 175 ;; 176 riscv*) 177 ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE 178 ;; 179 esac 180 181 AC_MSG_CHECKING([for available kernel interfaces]) 182 ZFS_LINUX_TEST_COMPILE_ALL([kabi]) 183 AC_MSG_RESULT([done]) 184]) 185 186dnl # 187dnl # Check results of kernel interface tests. 188dnl # 189AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [ 190 ZFS_AC_KERNEL_ACCESS_OK_TYPE 191 ZFS_AC_KERNEL_GLOBAL_PAGE_STATE 192 ZFS_AC_KERNEL_OBJTOOL 193 ZFS_AC_KERNEL_PDE_DATA 194 ZFS_AC_KERNEL_FALLOCATE 195 ZFS_AC_KERNEL_FADVISE 196 ZFS_AC_KERNEL_GENERIC_FADVISE 197 ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 198 ZFS_AC_KERNEL_RWSEM 199 ZFS_AC_KERNEL_SCHED 200 ZFS_AC_KERNEL_USLEEP_RANGE 201 ZFS_AC_KERNEL_KMEM_CACHE 202 ZFS_AC_KERNEL_KVMALLOC 203 ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL 204 ZFS_AC_KERNEL_WAIT 205 ZFS_AC_KERNEL_INODE_TIMES 206 ZFS_AC_KERNEL_INODE_LOCK 207 ZFS_AC_KERNEL_GROUP_INFO_GID 208 ZFS_AC_KERNEL_RW 209 ZFS_AC_KERNEL_TIMER_SETUP 210 ZFS_AC_KERNEL_SUPER_USER_NS 211 ZFS_AC_KERNEL_PROC_OPERATIONS 212 ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS 213 ZFS_AC_KERNEL_BIO 214 ZFS_AC_KERNEL_BLKDEV 215 ZFS_AC_KERNEL_BLK_QUEUE 216 ZFS_AC_KERNEL_GENHD_FLAGS 217 ZFS_AC_KERNEL_REVALIDATE_DISK 218 ZFS_AC_KERNEL_GET_DISK_RO 219 ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL 220 ZFS_AC_KERNEL_DISCARD_GRANULARITY 221 ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE 222 ZFS_AC_KERNEL_XATTR 223 ZFS_AC_KERNEL_ACL 224 ZFS_AC_KERNEL_INODE_SETATTR 225 ZFS_AC_KERNEL_INODE_GETATTR 226 ZFS_AC_KERNEL_INODE_SET_FLAGS 227 ZFS_AC_KERNEL_INODE_SET_IVERSION 228 ZFS_AC_KERNEL_SHOW_OPTIONS 229 ZFS_AC_KERNEL_FILE_INODE 230 ZFS_AC_KERNEL_FILE_DENTRY 231 ZFS_AC_KERNEL_FSYNC 232 ZFS_AC_KERNEL_AIO_FSYNC 233 ZFS_AC_KERNEL_EVICT_INODE 234 ZFS_AC_KERNEL_DIRTY_INODE 235 ZFS_AC_KERNEL_SHRINKER 236 ZFS_AC_KERNEL_MKDIR 237 ZFS_AC_KERNEL_LOOKUP_FLAGS 238 ZFS_AC_KERNEL_CREATE 239 ZFS_AC_KERNEL_PERMISSION 240 ZFS_AC_KERNEL_GET_LINK 241 ZFS_AC_KERNEL_PUT_LINK 242 ZFS_AC_KERNEL_TMPFILE 243 ZFS_AC_KERNEL_AUTOMOUNT 244 ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE 245 ZFS_AC_KERNEL_COMMIT_METADATA 246 ZFS_AC_KERNEL_CLEAR_INODE 247 ZFS_AC_KERNEL_SETATTR_PREPARE 248 ZFS_AC_KERNEL_INSERT_INODE_LOCKED 249 ZFS_AC_KERNEL_DENTRY 250 ZFS_AC_KERNEL_DENTRY_ALIAS_D_U 251 ZFS_AC_KERNEL_TRUNCATE_SETSIZE 252 ZFS_AC_KERNEL_SECURITY_INODE 253 ZFS_AC_KERNEL_FST_MOUNT 254 ZFS_AC_KERNEL_BDI 255 ZFS_AC_KERNEL_SET_NLINK 256 ZFS_AC_KERNEL_SGET 257 ZFS_AC_KERNEL_LSEEK_EXECUTE 258 ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO 259 ZFS_AC_KERNEL_VFS_READ_FOLIO 260 ZFS_AC_KERNEL_VFS_GETATTR 261 ZFS_AC_KERNEL_VFS_FSYNC_2ARGS 262 ZFS_AC_KERNEL_VFS_ITERATE 263 ZFS_AC_KERNEL_VFS_DIRECT_IO 264 ZFS_AC_KERNEL_VFS_READPAGES 265 ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS 266 ZFS_AC_KERNEL_VFS_RW_ITERATE 267 ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS 268 ZFS_AC_KERNEL_VFS_IOV_ITER 269 ZFS_AC_KERNEL_VFS_COPY_FILE_RANGE 270 ZFS_AC_KERNEL_VFS_GENERIC_COPY_FILE_RANGE 271 ZFS_AC_KERNEL_VFS_SPLICE_COPY_FILE_RANGE 272 ZFS_AC_KERNEL_VFS_REMAP_FILE_RANGE 273 ZFS_AC_KERNEL_VFS_CLONE_FILE_RANGE 274 ZFS_AC_KERNEL_VFS_DEDUPE_FILE_RANGE 275 ZFS_AC_KERNEL_VFS_FILE_OPERATIONS_EXTEND 276 ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS 277 ZFS_AC_KERNEL_FOLLOW_DOWN_ONE 278 ZFS_AC_KERNEL_MAKE_REQUEST_FN 279 ZFS_AC_KERNEL_GENERIC_IO_ACCT 280 ZFS_AC_KERNEL_FPU 281 ZFS_AC_KERNEL_FMODE_T 282 ZFS_AC_KERNEL_KUIDGID_T 283 ZFS_AC_KERNEL_KUID_HELPERS 284 ZFS_AC_KERNEL_RENAME 285 ZFS_AC_KERNEL_CURRENT_TIME 286 ZFS_AC_KERNEL_USERNS_CAPABILITIES 287 ZFS_AC_KERNEL_IN_COMPAT_SYSCALL 288 ZFS_AC_KERNEL_KTIME 289 ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC 290 ZFS_AC_KERNEL_TOTALHIGH_PAGES 291 ZFS_AC_KERNEL_KSTRTOUL 292 ZFS_AC_KERNEL_PERCPU 293 ZFS_AC_KERNEL_CPU_HOTPLUG 294 ZFS_AC_KERNEL_GENERIC_FILLATTR 295 ZFS_AC_KERNEL_MKNOD 296 ZFS_AC_KERNEL_SYMLINK 297 ZFS_AC_KERNEL_BIO_MAX_SEGS 298 ZFS_AC_KERNEL_SIGNAL_STOP 299 ZFS_AC_KERNEL_SIGINFO 300 ZFS_AC_KERNEL_SYSFS 301 ZFS_AC_KERNEL_SET_SPECIAL_STATE 302 ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG 303 ZFS_AC_KERNEL_STRLCPY 304 ZFS_AC_KERNEL_STRSCPY 305 ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT 306 ZFS_AC_KERNEL_ADD_DISK 307 ZFS_AC_KERNEL_KTHREAD 308 ZFS_AC_KERNEL_ZERO_PAGE 309 ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC 310 ZFS_AC_KERNEL_USER_NS_COMMON_INUM 311 ZFS_AC_KERNEL_IDMAP_MNT_API 312 ZFS_AC_KERNEL_IDMAP_NO_USERNS 313 ZFS_AC_KERNEL_IATTR_VFSID 314 ZFS_AC_KERNEL_FILEMAP 315 ZFS_AC_KERNEL_WRITEPAGE_T 316 ZFS_AC_KERNEL_RECLAIMED 317 ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE 318 ZFS_AC_KERNEL_COPY_SPLICE_READ 319 ZFS_AC_KERNEL_SYNC_BDEV 320 ZFS_AC_KERNEL_MM_PAGE_SIZE 321 case "$host_cpu" in 322 powerpc*) 323 ZFS_AC_KERNEL_CPU_HAS_FEATURE 324 ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE 325 ;; 326 riscv*) 327 ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE 328 ;; 329 esac 330]) 331 332dnl # 333dnl # Detect name used for Module.symvers file in kernel 334dnl # 335AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ 336 modpost=$LINUX/scripts/Makefile.modpost 337 AC_MSG_CHECKING([kernel file name for module symbols]) 338 AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ 339 AS_IF([grep -q Modules.symvers $modpost], [ 340 LINUX_SYMBOLS=Modules.symvers 341 ], [ 342 LINUX_SYMBOLS=Module.symvers 343 ]) 344 345 AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ 346 AC_MSG_ERROR([ 347 *** Please make sure the kernel devel package for your distribution 348 *** is installed. If you are building with a custom kernel, make sure 349 *** the kernel is configured, built, and the '--with-linux=PATH' 350 *** configure option refers to the location of the kernel source. 351 ]) 352 ]) 353 ], [ 354 LINUX_SYMBOLS=NONE 355 ]) 356 AC_MSG_RESULT($LINUX_SYMBOLS) 357 AC_SUBST(LINUX_SYMBOLS) 358]) 359 360dnl # 361dnl # Detect the kernel to be built against 362dnl # 363dnl # Most modern Linux distributions have separate locations for bare 364dnl # source (source) and prebuilt (build) files. Additionally, there are 365dnl # `source` and `build` symlinks in `/lib/modules/$(KERNEL_VERSION)` 366dnl # pointing to them. The directory search order is now: 367dnl # 368dnl # - `configure` command line values if both `--with-linux` and 369dnl # `--with-linux-obj` were defined 370dnl # 371dnl # - If only `--with-linux` was defined, `--with-linux-obj` is assumed 372dnl # to have the same value as `--with-linux` 373dnl # 374dnl # - If neither `--with-linux` nor `--with-linux-obj` were defined 375dnl # autodetection is used: 376dnl # 377dnl # - `/lib/modules/$(uname -r)/{source,build}` respectively, if exist. 378dnl # 379dnl # - If only `/lib/modules/$(uname -r)/build` exists, it is assumed 380dnl # to be both source and build directory. 381dnl # 382dnl # - The first directory in `/lib/modules` with the highest version 383dnl # number according to `sort -V` which contains both `source` and 384dnl # `build` symlinks/directories. If module directory contains only 385dnl # `build` component, it is assumed to be both source and build 386dnl # directory. 387dnl # 388dnl # - Last resort: the first directory matching `/usr/src/kernels/*` 389dnl # and `/usr/src/linux-*` with the highest version number according 390dnl # to `sort -V` is assumed to be both source and build directory. 391dnl # 392AC_DEFUN([ZFS_AC_KERNEL], [ 393 AC_ARG_WITH([linux], 394 AS_HELP_STRING([--with-linux=PATH], 395 [Path to kernel source]), 396 [kernelsrc="$withval"]) 397 398 AC_ARG_WITH(linux-obj, 399 AS_HELP_STRING([--with-linux-obj=PATH], 400 [Path to kernel build objects]), 401 [kernelbuild="$withval"]) 402 403 AC_MSG_CHECKING([kernel source and build directories]) 404 AS_IF([test -n "$kernelsrc" && test -z "$kernelbuild"], [ 405 kernelbuild="$kernelsrc" 406 ], [test -z "$kernelsrc"], [ 407 AS_IF([test -e "/lib/modules/$(uname -r)/source" && \ 408 test -e "/lib/modules/$(uname -r)/build"], [ 409 src="/lib/modules/$(uname -r)/source" 410 build="/lib/modules/$(uname -r)/build" 411 ], [test -e "/lib/modules/$(uname -r)/build"], [ 412 build="/lib/modules/$(uname -r)/build" 413 src="$build" 414 ], [ 415 src= 416 417 for d in $(ls -1d /lib/modules/* 2>/dev/null | sort -Vr); do 418 if test -e "$d/source" && test -e "$d/build"; then 419 src="$d/source" 420 build="$d/build" 421 break 422 fi 423 424 if test -e "$d/build"; then 425 src="$d/build" 426 build="$d/build" 427 break 428 fi 429 done 430 431 # the least reliable method 432 if test -z "$src"; then 433 src=$(ls -1d /usr/src/kernels/* /usr/src/linux-* \ 434 2>/dev/null | grep -v obj | sort -Vr | head -1) 435 build="$src" 436 fi 437 ]) 438 439 AS_IF([test -n "$src" && test -e "$src"], [ 440 kernelsrc=$(readlink -e "$src") 441 ], [ 442 kernelsrc="[Not found]" 443 ]) 444 AS_IF([test -n "$build" && test -e "$build"], [ 445 kernelbuild=$(readlink -e "$build") 446 ], [ 447 kernelbuild="[Not found]" 448 ]) 449 ], [ 450 AS_IF([test "$kernelsrc" = "NONE"], [ 451 kernsrcver=NONE 452 ]) 453 withlinux=yes 454 ]) 455 456 AC_MSG_RESULT([done]) 457 AC_MSG_CHECKING([kernel source directory]) 458 AC_MSG_RESULT([$kernelsrc]) 459 AC_MSG_CHECKING([kernel build directory]) 460 AC_MSG_RESULT([$kernelbuild]) 461 AS_IF([test ! -d "$kernelsrc" || test ! -d "$kernelbuild"], [ 462 AC_MSG_ERROR([ 463 *** Please make sure the kernel devel package for your distribution 464 *** is installed and then try again. If that fails, you can specify the 465 *** location of the kernel source and build with the '--with-linux=PATH' and 466 *** '--with-linux-obj=PATH' options respectively.]) 467 ]) 468 469 AC_MSG_CHECKING([kernel source version]) 470 utsrelease1=$kernelbuild/include/linux/version.h 471 utsrelease2=$kernelbuild/include/linux/utsrelease.h 472 utsrelease3=$kernelbuild/include/generated/utsrelease.h 473 AS_IF([test -r $utsrelease1 && grep -qF UTS_RELEASE $utsrelease1], [ 474 utsrelease=$utsrelease1 475 ], [test -r $utsrelease2 && grep -qF UTS_RELEASE $utsrelease2], [ 476 utsrelease=$utsrelease2 477 ], [test -r $utsrelease3 && grep -qF UTS_RELEASE $utsrelease3], [ 478 utsrelease=$utsrelease3 479 ]) 480 481 AS_IF([test -n "$utsrelease"], [ 482 kernsrcver=$($AWK '/UTS_RELEASE/ { gsub(/"/, "", $[3]); print $[3] }' $utsrelease) 483 AS_IF([test -z "$kernsrcver"], [ 484 AC_MSG_RESULT([Not found]) 485 AC_MSG_ERROR([ 486 *** Cannot determine kernel version. 487 ]) 488 ]) 489 ], [ 490 AC_MSG_RESULT([Not found]) 491 if test "x$enable_linux_builtin" != xyes; then 492 AC_MSG_ERROR([ 493 *** Cannot find UTS_RELEASE definition. 494 ]) 495 else 496 AC_MSG_ERROR([ 497 *** Cannot find UTS_RELEASE definition. 498 *** Please run 'make prepare' inside the kernel source tree.]) 499 fi 500 ]) 501 502 AC_MSG_RESULT([$kernsrcver]) 503 504 AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [ 505 AC_MSG_ERROR([ 506 *** Cannot build against kernel version $kernsrcver. 507 *** The minimum supported kernel version is $ZFS_META_KVER_MIN. 508 ]) 509 ]) 510 511 LINUX=${kernelsrc} 512 LINUX_OBJ=${kernelbuild} 513 LINUX_VERSION=${kernsrcver} 514 515 AC_SUBST(LINUX) 516 AC_SUBST(LINUX_OBJ) 517 AC_SUBST(LINUX_VERSION) 518]) 519 520dnl # 521dnl # Detect the QAT module to be built against, QAT provides hardware 522dnl # acceleration for data compression: 523dnl # 524dnl # https://01.org/intel-quickassist-technology 525dnl # 526dnl # 1) Download and install QAT driver from the above link 527dnl # 2) Start QAT driver in your system: 528dnl # service qat_service start 529dnl # 3) Enable QAT in ZFS, e.g.: 530dnl # ./configure --with-qat=<qat-driver-path>/QAT1.6 531dnl # make 532dnl # 4) Set GZIP compression in ZFS dataset: 533dnl # zfs set compression = gzip <dataset> 534dnl # 535dnl # Then the data written to this ZFS pool is compressed by QAT accelerator 536dnl # automatically, and de-compressed by QAT when read from the pool. 537dnl # 538dnl # 1) Get QAT hardware statistics with: 539dnl # cat /proc/icp_dh895xcc_dev/qat 540dnl # 2) To disable QAT: 541dnl # insmod zfs.ko zfs_qat_disable=1 542dnl # 543AC_DEFUN([ZFS_AC_QAT], [ 544 AC_ARG_WITH([qat], 545 AS_HELP_STRING([--with-qat=PATH], 546 [Path to qat source]), 547 AS_IF([test "$withval" = "yes"], 548 AC_MSG_ERROR([--with-qat=PATH requires a PATH]), 549 [qatsrc="$withval"])) 550 551 AC_ARG_WITH([qat-obj], 552 AS_HELP_STRING([--with-qat-obj=PATH], 553 [Path to qat build objects]), 554 [qatbuild="$withval"]) 555 556 AS_IF([test ! -z "${qatsrc}"], [ 557 AC_MSG_CHECKING([qat source directory]) 558 AC_MSG_RESULT([$qatsrc]) 559 QAT_SRC="${qatsrc}/quickassist" 560 AS_IF([ test ! -e "$QAT_SRC/include/cpa.h"], [ 561 AC_MSG_ERROR([ 562 *** Please make sure the qat driver package is installed 563 *** and specify the location of the qat source with the 564 *** '--with-qat=PATH' option then try again. Failed to 565 *** find cpa.h in: 566 ${QAT_SRC}/include]) 567 ]) 568 ]) 569 570 AS_IF([test ! -z "${qatsrc}"], [ 571 AC_MSG_CHECKING([qat build directory]) 572 AS_IF([test -z "$qatbuild"], [ 573 qatbuild="${qatsrc}/build" 574 ]) 575 576 AC_MSG_RESULT([$qatbuild]) 577 QAT_OBJ=${qatbuild} 578 AS_IF([ ! test -e "$QAT_OBJ/icp_qa_al.ko" && ! test -e "$QAT_OBJ/qat_api.ko"], [ 579 AC_MSG_ERROR([ 580 *** Please make sure the qat driver is installed then try again. 581 *** Failed to find icp_qa_al.ko or qat_api.ko in: 582 $QAT_OBJ]) 583 ]) 584 585 AC_SUBST(QAT_SRC) 586 AC_SUBST(QAT_OBJ) 587 588 AC_DEFINE(HAVE_QAT, 1, 589 [qat is enabled and existed]) 590 ]) 591 592 dnl # 593 dnl # Detect the name used for the QAT Module.symvers file. 594 dnl # 595 AS_IF([test ! -z "${qatsrc}"], [ 596 AC_MSG_CHECKING([qat file for module symbols]) 597 QAT_SYMBOLS=$QAT_SRC/lookaside/access_layer/src/Module.symvers 598 599 AS_IF([test -r $QAT_SYMBOLS], [ 600 AC_MSG_RESULT([$QAT_SYMBOLS]) 601 AC_SUBST(QAT_SYMBOLS) 602 ],[ 603 AC_MSG_ERROR([ 604 *** Please make sure the qat driver is installed then try again. 605 *** Failed to find Module.symvers in: 606 $QAT_SYMBOLS 607 ]) 608 ]) 609 ]) 610]) 611 612dnl # 613dnl # ZFS_LINUX_CONFTEST_H 614dnl # 615AC_DEFUN([ZFS_LINUX_CONFTEST_H], [ 616test -d build/$2 || mkdir -p build/$2 617cat - <<_ACEOF >build/$2/$2.h 618$1 619_ACEOF 620]) 621 622dnl # 623dnl # ZFS_LINUX_CONFTEST_C 624dnl # 625AC_DEFUN([ZFS_LINUX_CONFTEST_C], [ 626test -d build/$2 || mkdir -p build/$2 627cat confdefs.h - <<_ACEOF >build/$2/$2.c 628$1 629_ACEOF 630]) 631 632dnl # 633dnl # ZFS_LINUX_CONFTEST_MAKEFILE 634dnl # 635dnl # $1 - test case name 636dnl # $2 - add to top-level Makefile 637dnl # $3 - additional build flags 638dnl # 639AC_DEFUN([ZFS_LINUX_CONFTEST_MAKEFILE], [ 640 test -d build || mkdir -p build 641 test -d build/$1 || mkdir -p build/$1 642 643 file=build/$1/Makefile 644 645 dnl # Example command line to manually build source. 646 cat - <<_ACEOF >$file 647# Example command line to manually build source 648# make modules -C $LINUX_OBJ $ARCH_UM M=$PWD/build/$1 649 650ccflags-y := -Werror $FRAME_LARGER_THAN 651_ACEOF 652 653 dnl # Additional custom CFLAGS as requested. 654 m4_ifval($3, [echo "ccflags-y += $3" >>$file], []) 655 656 dnl # Test case source 657 echo "obj-m := $1.o" >>$file 658 659 AS_IF([test "x$2" = "xyes"], [echo "obj-m += $1/" >>build/Makefile], []) 660]) 661 662dnl # 663dnl # ZFS_LINUX_TEST_PROGRAM(C)([PROLOGUE], [BODY]) 664dnl # 665m4_define([ZFS_LINUX_TEST_PROGRAM], [ 666#include <linux/module.h> 667$1 668 669int 670main (void) 671{ 672$2 673 ; 674 return 0; 675} 676 677MODULE_DESCRIPTION("conftest"); 678MODULE_AUTHOR(ZFS_META_AUTHOR); 679MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE); 680MODULE_LICENSE($3); 681]) 682 683dnl # 684dnl # ZFS_LINUX_TEST_REMOVE 685dnl # 686dnl # Removes the specified test source and results. 687dnl # 688AC_DEFUN([ZFS_LINUX_TEST_REMOVE], [ 689 test -d build/$1 && rm -Rf build/$1 690 test -f build/Makefile && sed '/$1/d' build/Makefile 691]) 692 693dnl # 694dnl # ZFS_LINUX_COMPILE 695dnl # 696dnl # $1 - build dir 697dnl # $2 - test command 698dnl # $3 - pass command 699dnl # $4 - fail command 700dnl # $5 - set KBUILD_MODPOST_NOFINAL='yes' 701dnl # $6 - set KBUILD_MODPOST_WARN='yes' 702dnl # 703dnl # Used internally by ZFS_LINUX_TEST_{COMPILE,MODPOST} 704dnl # 705AC_DEFUN([ZFS_LINUX_COMPILE], [ 706 AC_ARG_VAR([KERNEL_CC], [C compiler for 707 building kernel modules]) 708 AC_ARG_VAR([KERNEL_LD], [Linker for 709 building kernel modules]) 710 AC_ARG_VAR([KERNEL_LLVM], [Binary option to 711 build kernel modules with LLVM/CLANG toolchain]) 712 AC_TRY_COMMAND([ 713 KBUILD_MODPOST_NOFINAL="$5" KBUILD_MODPOST_WARN="$6" 714 make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC} 715 ${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM} 716 CONFIG_MODULES=y CFLAGS_MODULE=-DCONFIG_MODULES 717 -C $LINUX_OBJ $ARCH_UM M=$PWD/$1 >$1/build.log 2>&1]) 718 AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4]) 719]) 720 721dnl # 722dnl # ZFS_LINUX_TEST_COMPILE 723dnl # 724dnl # Perform a full compile excluding the final modpost phase. 725dnl # 726AC_DEFUN([ZFS_LINUX_TEST_COMPILE], [ 727 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 728 mv $2/Makefile $2/Makefile.compile.$1 729 mv $2/build.log $2/build.log.$1 730 ],[ 731 AC_MSG_ERROR([ 732 *** Unable to compile test source to determine kernel interfaces.]) 733 ], [yes], []) 734]) 735 736dnl # 737dnl # ZFS_LINUX_TEST_MODPOST 738dnl # 739dnl # Perform a full compile including the modpost phase. This may 740dnl # be an incremental build if the objects have already been built. 741dnl # 742AC_DEFUN([ZFS_LINUX_TEST_MODPOST], [ 743 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 744 mv $2/Makefile $2/Makefile.modpost.$1 745 cat $2/build.log >>build/build.log.$1 746 ],[ 747 AC_MSG_ERROR([ 748 *** Unable to modpost test source to determine kernel interfaces.]) 749 ], [], [yes]) 750]) 751 752dnl # 753dnl # Perform the compilation of the test cases in two phases. 754dnl # 755dnl # Phase 1) attempt to build the object files for all of the tests 756dnl # defined by the ZFS_LINUX_TEST_SRC macro. But do not 757dnl # perform the final modpost stage. 758dnl # 759dnl # Phase 2) disable all tests which failed the initial compilation, 760dnl # then invoke the final modpost step for the remaining tests. 761dnl # 762dnl # This allows us efficiently build the test cases in parallel while 763dnl # remaining resilient to build failures which are expected when 764dnl # detecting the available kernel interfaces. 765dnl # 766dnl # The maximum allowed parallelism can be controlled by setting the 767dnl # TEST_JOBS environment variable. Otherwise, it default to $(nproc). 768dnl # 769AC_DEFUN([ZFS_LINUX_TEST_COMPILE_ALL], [ 770 dnl # Phase 1 - Compilation only, final linking is skipped. 771 ZFS_LINUX_TEST_COMPILE([$1], [build]) 772 773 dnl # 774 dnl # Phase 2 - When building external modules disable test cases 775 dnl # which failed to compile and invoke modpost to verify the 776 dnl # final linking. 777 dnl # 778 dnl # Test names suffixed with '_license' call modpost independently 779 dnl # to ensure that a single incompatibility does not result in the 780 dnl # modpost phase exiting early. This check is not performed on 781 dnl # every symbol since the majority are compatible and doing so 782 dnl # would significantly slow down this phase. 783 dnl # 784 dnl # When configuring for builtin (--enable-linux-builtin) 785 dnl # fake the linking step artificially create the expected .ko 786 dnl # files for tests which did compile. This is required for 787 dnl # kernels which do not have loadable module support or have 788 dnl # not yet been built. 789 dnl # 790 AS_IF([test "x$enable_linux_builtin" = "xno"], [ 791 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 792 build/Makefile.compile.$1); do 793 name=${dir%/} 794 AS_IF([test -f build/$name/$name.o], [ 795 AS_IF([test "${name##*_}" = "license"], [ 796 ZFS_LINUX_TEST_MODPOST([$1], 797 [build/$name]) 798 echo "obj-n += $dir" >>build/Makefile 799 ], [ 800 echo "obj-m += $dir" >>build/Makefile 801 ]) 802 ], [ 803 echo "obj-n += $dir" >>build/Makefile 804 ]) 805 done 806 807 ZFS_LINUX_TEST_MODPOST([$1], [build]) 808 ], [ 809 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 810 build/Makefile.compile.$1); do 811 name=${dir%/} 812 AS_IF([test -f build/$name/$name.o], [ 813 touch build/$name/$name.ko 814 ]) 815 done 816 ]) 817]) 818 819dnl # 820dnl # ZFS_LINUX_TEST_SRC 821dnl # 822dnl # $1 - name 823dnl # $2 - global 824dnl # $3 - source 825dnl # $4 - extra cflags 826dnl # $5 - check license-compatibility 827dnl # 828dnl # Check if the test source is buildable at all and then if it is 829dnl # license compatible. 830dnl # 831dnl # N.B because all of the test cases are compiled in parallel they 832dnl # must never depend on the results of previous tests. Each test 833dnl # needs to be entirely independent. 834dnl # 835AC_DEFUN([ZFS_LINUX_TEST_SRC], [ 836 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM([[$2]], [[$3]], 837 [["Dual BSD/GPL"]])], [$1]) 838 ZFS_LINUX_CONFTEST_MAKEFILE([$1], [yes], [$4]) 839 840 AS_IF([ test -n "$5" ], [ 841 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM( 842 [[$2]], [[$3]], [[$5]])], [$1_license]) 843 ZFS_LINUX_CONFTEST_MAKEFILE([$1_license], [yes], [$4]) 844 ]) 845]) 846 847dnl # 848dnl # ZFS_LINUX_TEST_RESULT 849dnl # 850dnl # $1 - name of a test source (ZFS_LINUX_TEST_SRC) 851dnl # $2 - run on success (valid .ko generated) 852dnl # $3 - run on failure (unable to compile) 853dnl # 854AC_DEFUN([ZFS_LINUX_TEST_RESULT], [ 855 AS_IF([test -d build/$1], [ 856 AS_IF([test -f build/$1/$1.ko], [$2], [$3]) 857 ], [ 858 AC_MSG_ERROR([ 859 *** No matching source for the "$1" test, check that 860 *** both the test source and result macros refer to the same name. 861 ]) 862 ]) 863]) 864 865dnl # 866dnl # ZFS_LINUX_TEST_ERROR 867dnl # 868dnl # Generic error message which can be used when none of the expected 869dnl # kernel interfaces were detected. 870dnl # 871AC_DEFUN([ZFS_LINUX_TEST_ERROR], [ 872 AC_MSG_ERROR([ 873 *** None of the expected "$1" interfaces were detected. 874 *** This may be because your kernel version is newer than what is 875 *** supported, or you are using a patched custom kernel with 876 *** incompatible modifications. 877 *** 878 *** ZFS Version: $ZFS_META_ALIAS 879 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 880 ]) 881]) 882 883dnl # 884dnl # ZFS_LINUX_TEST_RESULT_SYMBOL 885dnl # 886dnl # Like ZFS_LINUX_TEST_RESULT except ZFS_CHECK_SYMBOL_EXPORT is called to 887dnl # verify symbol exports, unless --enable-linux-builtin was provided to 888dnl # configure. 889dnl # 890AC_DEFUN([ZFS_LINUX_TEST_RESULT_SYMBOL], [ 891 AS_IF([ ! test -f build/$1/$1.ko], [ 892 $5 893 ], [ 894 AS_IF([test "x$enable_linux_builtin" != "xyes"], [ 895 ZFS_CHECK_SYMBOL_EXPORT([$2], [$3], [$4], [$5]) 896 ], [ 897 $4 898 ]) 899 ]) 900]) 901 902dnl # 903dnl # ZFS_LINUX_COMPILE_IFELSE 904dnl # 905AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ 906 ZFS_LINUX_TEST_REMOVE([conftest]) 907 908 m4_ifvaln([$1], [ZFS_LINUX_CONFTEST_C([$1], [conftest])]) 909 m4_ifvaln([$5], [ZFS_LINUX_CONFTEST_H([$5], [conftest])], 910 [ZFS_LINUX_CONFTEST_H([], [conftest])]) 911 912 ZFS_LINUX_CONFTEST_MAKEFILE([conftest], [no], 913 [m4_ifvaln([$5], [-I$PWD/build/conftest], [])]) 914 ZFS_LINUX_COMPILE([build/conftest], [$2], [$3], [$4], [], []) 915]) 916 917dnl # 918dnl # ZFS_LINUX_TRY_COMPILE 919dnl # 920dnl # $1 - global 921dnl # $2 - source 922dnl # $3 - run on success (valid .ko generated) 923dnl # $4 - run on failure (unable to compile) 924dnl # 925dnl # When configuring as builtin (--enable-linux-builtin) for kernels 926dnl # without loadable module support (CONFIG_MODULES=n) only the object 927dnl # file is created. See ZFS_LINUX_TEST_COMPILE_ALL for details. 928dnl # 929AC_DEFUN([ZFS_LINUX_TRY_COMPILE], [ 930 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 931 ZFS_LINUX_COMPILE_IFELSE( 932 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 933 [[ZFS_META_LICENSE]])], 934 [test -f build/conftest/conftest.o], [$3], [$4]) 935 ], [ 936 ZFS_LINUX_COMPILE_IFELSE( 937 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 938 [[ZFS_META_LICENSE]])], 939 [test -f build/conftest/conftest.ko], [$3], [$4]) 940 ]) 941]) 942 943dnl # 944dnl # ZFS_CHECK_SYMBOL_EXPORT 945dnl # 946dnl # Check if a symbol is exported on not by consulting the symbols 947dnl # file, or optionally the source code. 948dnl # 949AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ 950 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ 951 $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null 952 rc=$? 953 if test $rc -ne 0; then 954 export=0 955 for file in $2; do 956 grep -q -E "EXPORT_SYMBOL.*($1)" \ 957 "$LINUX/$file" 2>/dev/null 958 rc=$? 959 if test $rc -eq 0; then 960 export=1 961 break; 962 fi 963 done 964 if test $export -eq 0; then : 965 $4 966 else : 967 $3 968 fi 969 else : 970 $3 971 fi 972]) 973 974dnl # 975dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL 976dnl # 977dnl # Like ZFS_LINUX_TRY_COMPILER except ZFS_CHECK_SYMBOL_EXPORT is called 978dnl # to verify symbol exports, unless --enable-linux-builtin was provided 979dnl # to configure. 980dnl # 981AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ 982 ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) 983 if test $rc -ne 0; then : 984 $6 985 else 986 if test "x$enable_linux_builtin" != xyes; then 987 ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) 988 fi 989 if test $rc -ne 0; then : 990 $6 991 else : 992 $5 993 fi 994 fi 995]) 996 997dnl # 998dnl # ZFS_LINUX_TRY_COMPILE_HEADER 999dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are 1000dnl # provided via the fifth parameter 1001dnl # 1002AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ 1003 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 1004 ZFS_LINUX_COMPILE_IFELSE( 1005 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 1006 [[ZFS_META_LICENSE]])], 1007 [test -f build/conftest/conftest.o], [$3], [$4], [$5]) 1008 ], [ 1009 ZFS_LINUX_COMPILE_IFELSE( 1010 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 1011 [[ZFS_META_LICENSE]])], 1012 [test -f build/conftest/conftest.ko], [$3], [$4], [$5]) 1013 ]) 1014]) 1015 1016dnl # 1017dnl # AS_VERSION_COMPARE_LE 1018dnl # like AS_VERSION_COMPARE_LE, but runs $3 if (and only if) $1 <= $2 1019dnl # AS_VERSION_COMPARE_LE (version-1, version-2, [action-if-less-or-equal], [action-if-greater]) 1020dnl # 1021AC_DEFUN([AS_VERSION_COMPARE_LE], [ 1022 AS_VERSION_COMPARE([$1], [$2], [$3], [$3], [$4]) 1023]) 1024 1025dnl # 1026dnl # ZFS_LINUX_REQUIRE_API 1027dnl # like ZFS_LINUX_TEST_ERROR, except only fails if the kernel is 1028dnl # at least some specified version. 1029dnl # 1030AC_DEFUN([ZFS_LINUX_REQUIRE_API], [ 1031 AS_VERSION_COMPARE_LE([$2], [$kernsrcver], [ 1032 AC_MSG_ERROR([ 1033 *** None of the expected "$1" interfaces were detected. This 1034 *** interface is expected for kernels version "$2" and above. 1035 *** This may be because your kernel version is newer than what is 1036 *** supported, or you are using a patched custom kernel with 1037 *** incompatible modifications. Newer kernels may have incompatible 1038 *** APIs. 1039 *** 1040 *** ZFS Version: $ZFS_META_ALIAS 1041 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 1042 ]) 1043 ], [ 1044 AC_MSG_RESULT(no) 1045 ]) 1046]) 1047