lustre/autoconf/lustre-core.m4

   1 #
   2 # LC_CONFIG_SRCDIR
   3 #
   4 # Wrapper for AC_CONFIG_SUBDIR
   5 #
   6 AC_DEFUN([LC_CONFIG_SRCDIR], [
   7 AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
   8 libcfs_is_module="yes"
   9 ldiskfs_is_ext4="yes"
  10 ])
  11
  12 #
  13 # LC_PATH_DEFAULTS
  14 #
  15 # lustre specific paths
  16 #
  17 AC_DEFUN([LC_PATH_DEFAULTS], [
  18 # ptlrpc kernel build requires this
  19 LUSTRE="$PWD/lustre"
  20 AC_SUBST(LUSTRE)
  21
  22 # mount.lustre
  23 rootsbindir='$(CROSS_PATH)/sbin'
  24 AC_SUBST(rootsbindir)
  25
  26 demodir='$(docdir)/demo'
  27 AC_SUBST(demodir)
  28
  29 pkgexampledir='${pkgdatadir}/examples'
  30 AC_SUBST(pkgexampledir)
  31 ]) # LC_PATH_DEFAULTS
  32
  33 #
  34 # LC_TARGET_SUPPORTED
  35 #
  36 # is the target os supported?
  37 #
  38 AC_DEFUN([LC_TARGET_SUPPORTED], [
  39 case $target_os in
  40         linux*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ]) # LC_TARGET_SUPPORTED
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE], [
  55 AC_MSG_CHECKING([for maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                 [set lctl ioctl maximum bytes (default=8192)]),
  59         [OBD_BUFFER_SIZE=$with_obd_buffer_size],
  60         [OBD_BUFFER_SIZE=8192])
  61 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  62 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE,
  63         [IOCTL Buffer Size])
  64 ]) # LC_CONFIG_OBD_BUFFER_SIZE
  65
  66 #
  67 # LC_GLIBC_SUPPORT_FHANDLES
  68 #
  69 AC_DEFUN([LC_GLIBC_SUPPORT_FHANDLES], [
  70 AC_CHECK_FUNCS([name_to_handle_at],
  71         [AC_DEFINE(HAVE_FHANDLE_GLIBC_SUPPORT, 1,
  72                 [file handle and related syscalls are supported])],
  73         [AC_MSG_WARN([file handle and related syscalls are not supported])])
  74 ]) # LC_GLIBC_SUPPORT_FHANDLES
  75
  76 #
  77 # LC_FUNC_DEV_SET_RDONLY
  78 #
  79 # check whether dev_set_rdonly is exported.  This is needed until we
  80 # have another mechanism to fence IO from the underlying device.
  81 #
  82 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY], [
  83 LB_CHECK_EXPORT([dev_set_rdonly], [block/ll_rw_block.c block/blk-core.c],
  84         [AC_DEFINE(HAVE_DEV_SET_RDONLY, 1,
  85                 [kernel exports dev_set_rdonly])],
  86         [AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])])
  87 ]) # LC_FUNC_DEV_SET_RDONLY
  88
  89 #
  90 # LC_STACK_SIZE
  91 #
  92 # Ensure stack size big than 8k in Lustre server (all kernels)
  93 #
  94 AC_DEFUN([LC_STACK_SIZE], [
  95 LB_CHECK_COMPILE([if stack size big than 8k],
  96 stack_size_8k, [
  97         #include <linux/thread_info.h>
  98 ], [
  99         #if THREAD_SIZE < 8192
 100         #error "stack size < 8192"
 101         #endif
 102 ], [], [AC_MSG_ERROR([
 103
 104 Lustre requires that Linux is configured with at least a 8KB stack.
 105 ])])
 106 ]) # LC_STACK_SIZE
 107
 108 #
 109 # LC_MDS_MAX_THREADS
 110 #
 111 # Allow the user to set the MDS thread upper limit
 112 #
 113 AC_DEFUN([LC_MDS_MAX_THREADS], [
 114 AC_MSG_CHECKING([for maximum number of MDS threads])
 115 AC_ARG_WITH([mds_max_threads],
 116         AC_HELP_STRING([--with-mds-max-threads=count],
 117                 [maximum threads available on the MDS: (default=512)]),
 118         [AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $with_mds_max_threads,
 119                 [maximum number of MDS threads])])
 120 AC_MSG_RESULT([$with_mds_max_threads])
 121 ]) # LC_MDS_MAX_THREADS
 122
 123 #
 124 # LC_CONFIG_PINGER
 125 #
 126 # the pinger is temporary, until we have the recovery node in place
 127 #
 128 AC_DEFUN([LC_CONFIG_PINGER], [
 129 AC_MSG_CHECKING([whether to enable Lustre pinger support])
 130 AC_ARG_ENABLE([pinger],
 131         AC_HELP_STRING([--disable-pinger],
 132                 [disable recovery pinger support]),
 133         [], [enable_pinger="yes"])
 134 AC_MSG_RESULT([$enable_pinger])
 135 AS_IF([test "x$enable_pinger" != xno],
 136         [AC_DEFINE(ENABLE_PINGER, 1,[Use the Pinger])])
 137 ]) # LC_CONFIG_PINGER
 138
 139 #
 140 # LC_CONFIG_CHECKSUM
 141 #
 142 # do checksum of bulk data between client and OST
 143 #
 144 AC_DEFUN([LC_CONFIG_CHECKSUM], [
 145 AC_MSG_CHECKING([whether to enable data checksum support])
 146 AC_ARG_ENABLE([checksum],
 147         AC_HELP_STRING([--disable-checksum],
 148                 [disable data checksum support]),
 149         [], [enable_checksum="yes"])
 150 AC_MSG_RESULT([$enable_checksum])
 151 AS_IF([test "x$enable_checksum" != xno],
 152         [AC_DEFINE(ENABLE_CHECKSUM, 1, [do data checksums])])
 153 ]) # LC_CONFIG_CHECKSUM
 154
 155 #
 156 # LC_CONFIG_HEALTH_CHECK_WRITE
 157 #
 158 # Turn off the actual write to the disk
 159 #
 160 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE], [
 161 AC_MSG_CHECKING([whether to enable a write with the health check])
 162 AC_ARG_ENABLE([health_write],
 163         AC_HELP_STRING([--enable-health_write],
 164                 [enable disk writes when doing health check]),
 165         [], [enable_health_write="no"])
 166 AC_MSG_RESULT([$enable_health_write])
 167 AS_IF([test "x$enable_health_write" != xno],
 168         [AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, [Write when Checking Health])])
 169 ]) # LC_CONFIG_HEALTH_CHECK_WRITE
 170
 171 #
 172 # LC_CONFIG_LRU_RESIZE
 173 #
 174 AC_DEFUN([LC_CONFIG_LRU_RESIZE], [
 175 AC_MSG_CHECKING([whether to enable lru self-adjusting])
 176 AC_ARG_ENABLE([lru_resize],
 177         AC_HELP_STRING([--enable-lru-resize],
 178                 [enable lru resize support]),
 179         [], [enable_lru_resize="yes"])
 180 AC_MSG_RESULT([$enable_lru_resize])
 181 AS_IF([test "x$enable_lru_resize" != xno],
 182         [AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])])
 183 ]) # LC_CONFIG_LRU_RESIZE
 184
 185 #
 186 # LC_QUOTA_CONFIG
 187 #
 188 # Quota support. The kernel must support CONFIG_QUOTA.
 189 #
 190 AC_DEFUN([LC_QUOTA_CONFIG], [
 191 LB_CHECK_CONFIG_IM([QUOTA], [],
 192         [AC_MSG_ERROR([
 193
 194 Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.
 195 ])])
 196 ]) # LC_QUOTA_CONFIG
 197
 198 #
 199 # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 200 #
 201 # truncate_complete_page() has never been exported from an upstream kernel
 202 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 203 # delete_from_page_cache() is exported from 2.6.39
 204 #
 205 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE], [
 206 LB_CHECK_EXPORT([truncate_complete_page], [mm/truncate.c],
 207         [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 208                 [kernel export truncate_complete_page])])
 209 LB_CHECK_EXPORT([remove_from_page_cache], [mm/filemap.c],
 210         [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 211                 [kernel export remove_from_page_cache])])
 212 LB_CHECK_EXPORT([delete_from_page_cache], [mm/filemap.c],
 213         [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 214                 [kernel export delete_from_page_cache])])
 215 ]) # LC_EXPORT_TRUNCATE_COMPLETE_PAGE
 216
 217 #
 218 # LC_CAPA_CRYPTO
 219 #
 220 AC_DEFUN([LC_CAPA_CRYPTO], [
 221 LB_CHECK_CONFIG_IM([CRYPTO], [],
 222         [AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])])
 223 LB_CHECK_CONFIG_IM([CRYPTO_HMAC], [],
 224         [AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])])
 225 LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 226         [AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])])
 227 ]) # LC_CAPA_CRYPTO
 228
 229 #
 230 # LC_CONFIG_RMTCLIENT
 231 #
 232 dnl FIXME
 233 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 234 dnl FIXME
 235 AC_DEFUN([LC_CONFIG_RMTCLIENT], [
 236 LB_CHECK_CONFIG_IM([CRYPTO_AES], [],
 237         [AC_MSG_WARN([
 238
 239 Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.
 240 ])])
 241 ]) # LC_CONFIG_RMTCLIENT
 242
 243 #
 244 # LC_CONFIG_GSS_KEYRING
 245 #
 246 # default 'auto', tests for dependencies, if found, enables;
 247 # only called if gss is enabled
 248 #
 249 AC_DEFUN([LC_CONFIG_GSS_KEYRING], [
 250 AC_MSG_CHECKING([whether to enable gss keyring backend])
 251 AC_ARG_ENABLE([gss_keyring],
 252         [AC_HELP_STRING([--disable-gss-keyring],
 253                 [disable gss keyring backend])],
 254         [], [enable_gss_keyring="auto"])
 255 AC_MSG_RESULT([$enable_gss_keyring])
 256 AS_IF([test "x$enable_gss_keyring" != xno], [
 257         LB_CHECK_CONFIG_IM([KEYS], [], [
 258                 gss_keyring_conf_test="fail"
 259                 AC_MSG_WARN([
 260
 261 GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.
 262 ])])
 263
 264         AC_CHECK_LIB([keyutils], [keyctl_search], [], [
 265                 gss_keyring_conf_test="fail"
 266                 AC_MSG_WARN([
 267
 268 libkeyutils is not found, which is required by gss keyring backend
 269 ])])
 270
 271         AS_IF([test "x$gss_keyring_conf_test" != xfail], [
 272                 AC_DEFINE([HAVE_GSS_KEYRING], [1],
 273                         [Define this if you enable gss keyring backend])
 274                 enable_gss_keyring="yes"
 275         ], [
 276                 AS_IF([test "x$enable_gss_keyring" = xyes], [
 277                         AC_MSG_ERROR([
 278
 279 Cannot enable gss_keyring. See above for details.
 280 ])
 281                 ], [
 282                         AC_MSG_WARN([
 283
 284 Cannot enable gss keyring. See above for details.
 285 ])
 286                 ])
 287         ])
 288 ])
 289 ]) # LC_CONFIG_GSS_KEYRING
 290
 291 #
 292 # LC_CONFIG_SUNRPC
 293 #
 294 AC_DEFUN([LC_CONFIG_SUNRPC], [
 295 LB_CHECK_CONFIG_IM([SUNRPC], [], [
 296         AS_IF([test "x$sunrpc_required" = xyes], [
 297                 AC_MSG_ERROR([
 298
 299 kernel SUNRPC support is required by using GSS.
 300 ])
 301         ])])
 302 ]) # LC_CONFIG_SUNRPC
 303
 304 #
 305 # LC_CONFIG_GSS (default 'auto' (tests for dependencies, if found, enables))
 306 #
 307 # Build gss and related tools of Lustre. Currently both kernel and user space
 308 # parts are depend on linux platform.
 309 #
 310 AC_DEFUN([LC_CONFIG_GSS], [
 311 AC_MSG_CHECKING([whether to enable gss/krb5 support])
 312 AC_ARG_ENABLE([gss],
 313         [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 314         [], [enable_gss="auto"])
 315 AC_MSG_RESULT([$enable_gss])
 316
 317 AS_IF([test "x$enable_gss" != xno], [
 318         LC_CONFIG_GSS_KEYRING
 319         sunrpc_required=$enable_gss
 320         LC_CONFIG_SUNRPC
 321         sunrpc_required="no"
 322
 323         LB_CHECK_CONFIG_IM([CRYPTO_MD5], [],
 324                 [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 325         LB_CHECK_CONFIG_IM([CRYPTO_SHA1], [],
 326                 [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 327         LB_CHECK_CONFIG_IM([CRYPTO_SHA256], [],
 328                 [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 329         LB_CHECK_CONFIG_IM([CRYPTO_SHA512], [],
 330                 [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 331
 332         require_krb5=$enable_gss
 333         AC_KERBEROS_V5
 334         require_krb5="no"
 335
 336         AS_IF([test -n "$KRBDIR"], [
 337                 AC_CHECK_LIB([gssapi], [gss_export_lucid_sec_context], [
 338                         GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"
 339                         gss_conf_test="success"
 340                 ], [
 341                         AC_CHECK_LIB([gssglue], [gss_export_lucid_sec_context], [
 342                                 GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"
 343                                 gss_conf_test="success"
 344                         ], [
 345                                 AS_IF([test "x$enable_gss" = xyes], [
 346                                         AC_MSG_ERROR([
 347
 348 libgssapi or libgssglue is not found, which is required by GSS.
 349 ])
 350                                 ], [
 351                                         AC_MSG_WARN([
 352
 353 libgssapi or libgssglue is not found, which is required by GSS.
 354 ])
 355                                 ])
 356                         ])
 357                 ])
 358                 AC_SUBST(GSSAPI_LIBS)
 359         ])
 360
 361         AS_IF([test "x$gss_conf_test" = xsuccess], [
 362                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 363                 enable_gss="yes"
 364         ])
 365 ])
 366 ]) # LC_CONFIG_GSS
 367
 368 #
 369 # LC_INODE_PERMISION_2ARGS
 370 #
 371 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 372 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 373 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 374 # v3.1 onward have a 2 arg version (inode, mask)
 375 #
 376 AC_DEFUN([LC_INODE_PERMISION_2ARGS], [
 377 LB_CHECK_COMPILE([if 'inode_operations->permission' has two args],
 378 inode_ops_permission_2args, [
 379         #include <linux/fs.h>
 380 ],[
 381         struct inode *inode __attribute__ ((unused));
 382
 383         inode = NULL;
 384         inode->i_op->permission(NULL, 0);
 385 ],[
 386         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 387                 [inode_operations->permission has two args])
 388 ])
 389 ]) # LC_INODE_PERMISION_2ARGS
 390
 391 #
 392 # LC_BLK_QUEUE_MAX_SEGMENTS
 393 #
 394 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 395 #
 396 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS], [
 397 LB_CHECK_COMPILE([if 'blk_queue_max_segments' is defined],
 398 blk_queue_max_segments, [
 399         #include <linux/blkdev.h>
 400 ],[
 401         blk_queue_max_segments(NULL, 0);
 402 ],[
 403         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 404                 [blk_queue_max_segments is defined])
 405 ])
 406 ]) # LC_BLK_QUEUE_MAX_SEGMENTS
 407
 408 #
 409 # LC_HAVE_DQUOT_FS_DISK_QUOTA
 410 #
 411 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 412 #
 413 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA], [
 414 tmp_flags="$EXTRA_KCFLAGS"
 415 EXTRA_KCFLAGS="-Werror"
 416 LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct fs_disk_quota],
 417 fs_disk_quota, [
 418         #include <linux/fs.h>
 419         #include <linux/quota.h>
 420 ],[
 421         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 422 ],[
 423         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 424                 [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 425 ],[
 426         LB_CHECK_COMPILE([if 'quotactl_ops.set_dqblk' takes struct kqid & fs_disk_quota],
 427         kqid_fs_disk_quota, [
 428                 #include <linux/fs.h>
 429                 #include <linux/quota.h>
 430         ],[
 431                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 432         ],[
 433                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1,
 434                         [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 435                 AC_DEFINE(HAVE_DQUOT_KQID, 1,
 436                         [quotactl_ops.set_dqblk takes struct kqid])
 437         ])
 438 ])
 439 EXTRA_KCFLAGS="$tmp_flags"
 440 ]) # LC_HAVE_DQUOT_FS_DISK_QUOTA
 441
 442 #
 443 # LC_HAVE_DQUOT_SUSPEND
 444 #
 445 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 446 #
 447 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND], [
 448 LB_CHECK_COMPILE([if 'dquot_suspend' is defined],
 449 dquot_suspend, [
 450         #include <linux/quotaops.h>
 451 ],[
 452         dquot_suspend(NULL, -1);
 453 ],[
 454         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 455 ])
 456 ]) # LC_HAVE_DQUOT_SUSPEND
 457
 458 #
 459 # LC_QUOTA64
 460 #
 461 # Check if kernel has been patched for 64-bit quota limits support.
 462 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 463 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 464 # that in the absence of quotaio_v1.h in the kernel headers.
 465 #
 466 AC_DEFUN([LC_QUOTA64], [
 467 tmp_flags="$EXTRA_KCFLAGS"
 468 EXTRA_KCFLAGS="-I$LINUX/fs"
 469 LB_CHECK_COMPILE([if kernel has 64-bit quota limits support],
 470 quota64, [
 471         #include <linux/kernel.h>
 472         #include <linux/fs.h>
 473         #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 474         #include <quota/quotaio_v2.h>
 475         struct v2r1_disk_dqblk dqblk_r1;
 476         #else
 477         #include <linux/quota.h>
 478         int ver = QFMT_VFS_V1;
 479         #endif
 480 ], [], [
 481         AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 482 ],[
 483         LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],
 484                 [AC_MSG_ERROR([You have got no 64-bit kernel quota support.])])
 485 ])
 486 EXTRA_KCFLAGS=$tmp_flags
 487 ]) # LC_QUOTA64
 488
 489 #
 490 # LC_FS_STRUCT_RWLOCK
 491 #
 492 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 493 #
 494 AC_DEFUN([LC_FS_STRUCT_RWLOCK], [
 495 LB_CHECK_COMPILE([if 'fs_struct.lock' use rwlock],
 496 fs_struct_rwlock, [
 497         #include <asm/atomic.h>
 498         #include <linux/spinlock.h>
 499         #include <linux/fs_struct.h>
 500 ],[
 501         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 502 ],[
 503         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1, [fs_struct.lock use rwlock])
 504 ])
 505 ]) # LC_FS_STRUCT_RWLOCK
 506
 507 #
 508 # LC_SBOPS_EVICT_INODE
 509 #
 510 # 2.6.36 super_operations add evict_inode method. it hybird of
 511 # delete_inode & clear_inode.
 512 #
 513 AC_DEFUN([LC_SBOPS_EVICT_INODE], [
 514 LB_CHECK_COMPILE([if 'super_operations.evict_inode' exist],
 515 super_ops_evict_inode, [
 516         #include <linux/fs.h>
 517 ],[
 518         ((struct super_operations *)0)->evict_inode(NULL);
 519 ],[
 520         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 521                 [super_operations.evict_inode() is exist in kernel])
 522 ])
 523 ]) # LC_SBOPS_EVICT_INODE
 524
 525 #
 526 # LC_FILE_FSYNC
 527 #
 528 # 2.6.35 file_operations.fsync taken 2 arguments.
 529 # 3.0.0 file_operations.fsync takes 4 arguments.
 530 #
 531 AC_DEFUN([LC_FILE_FSYNC], [
 532 LB_CHECK_COMPILE([if 'file_operations.fsync' takes 4 arguments],
 533 file_ops_fsync_4args, [
 534         #include <linux/fs.h>
 535 ],[
 536         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 537 ],[
 538         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 539                 [file_operations.fsync takes 4 arguments])
 540 ],[
 541         LB_CHECK_COMPILE([if 'file_operations.fsync' takes 2 arguments],
 542         file_ops_fsync_2args, [
 543                 #include <linux/fs.h>
 544         ],[
 545                 ((struct file_operations *)0)->fsync(NULL, 0);
 546         ],[
 547                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 548                         [file_operations.fsync takes 2 arguments])
 549         ])
 550 ])
 551 ]) # LC_FILE_FSYNC
 552
 553 #
 554 # LC_KERNEL_LOCKED
 555 #
 556 # 2.6.37 remove kernel_locked
 557 #
 558 AC_DEFUN([LC_KERNEL_LOCKED], [
 559 LB_CHECK_COMPILE([if 'kernel_locked' is defined],
 560 kernel_locked, [
 561         #include <linux/smp_lock.h>
 562 ],[
 563         kernel_locked();
 564 ],[
 565         AC_DEFINE(HAVE_KERNEL_LOCKED, 1, [kernel_locked is defined])
 566 ])
 567 ]) # LC_KERNEL_LOCKED
 568
 569 #
 570 # LC_D_COMPARE_7ARGS
 571 #
 572 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 573 #
 574 AC_DEFUN([LC_D_COMPARE_7ARGS], [
 575 LB_CHECK_COMPILE([if 'dentry_operations.d_compare()' taken 7 arguments],
 576 dentry_ops_d_compare_7arg, [
 577         #include <linux/dcache.h>
 578 ],[
 579         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 580 ],[
 581         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1, [d_compare need 7 arguments])
 582 ])
 583 ]) # LC_D_COMPARE_7ARGS
 584
 585 #
 586 # LC_D_DELETE_CONST
 587 #
 588 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 589 #
 590 AC_DEFUN([LC_D_DELETE_CONST], [
 591 tmp_flags="$EXTRA_KCFLAGS"
 592 EXTRA_KCFLAGS="-Werror"
 593 LB_CHECK_COMPILE([if 'dentry_operations.d_delete()' has const declare on first parameter],
 594 dentry_ops_d_delete_1st_const, [
 595         #include <linux/dcache.h>
 596 ],[
 597         const struct dentry *d = NULL;
 598         ((struct dentry_operations*)0)->d_delete(d);
 599 ],[
 600         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 601                 [d_delete first parameter declared const])
 602 ],[
 603         AC_DEFINE(HAVE_D_DELETE_CONST, [],
 604                 [d_delete first parameter declared is not const])
 605 ])
 606 EXTRA_KCFLAGS="$tmp_flags"
 607 ]) # LC_D_DELETE_CONST
 608
 609 #
 610 # LC_DCACHE_LOCK
 611 #
 612 # 2.6.38 dcache_lock removed. rcu-walk commited.
 613 #
 614 AC_DEFUN([LC_DCACHE_LOCK], [
 615 LB_CHECK_COMPILE([if 'dcache_lock' is exist],
 616 dcache_lock, [
 617         #include <linux/dcache.h>
 618 ],[
 619         spin_lock(&dcache_lock);
 620 ],[
 621         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 622                 [dcache_lock is exist])
 623 ])
 624 ]) # LC_DCACHE_LOCK
 625
 626 #
 627 # LC_INODE_I_RCU
 628 #
 629 # 2.6.38 inode.i_rcu added.
 630 #
 631 AC_DEFUN([LC_INODE_I_RCU], [
 632 LB_CHECK_COMPILE([if 'inode.i_rcu' exists],
 633 inode_i_rcu, [
 634         #include <linux/fs.h>
 635 ],[
 636         struct inode ino;
 637         struct rcu_head rcu = {};
 638         ino.i_rcu = rcu;
 639 ],[
 640         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 641                 [inode.i_rcu exists])
 642 ])
 643 ]) # LC_INODE_I_RCU
 644
 645 #
 646 # LC_BLKDEV_GET_BY_DEV
 647 #
 648 # 2.6.38 export blkdev_get_by_dev
 649 #
 650 AC_DEFUN([LC_BLKDEV_GET_BY_DEV], [
 651 LB_CHECK_EXPORT([blkdev_get_by_dev], [fs/block_dev.c],
 652         [AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 653                 [blkdev_get_by_dev is exported by the kernel])])
 654 ]) # LC_BLKDEV_GET_BY_DEV
 655
 656 #
 657 # LC_EXPORT_SIMPLE_SETATTR
 658 #
 659 # 2.6.38 export simple_setattr
 660 #
 661 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR], [
 662 LB_CHECK_EXPORT([simple_setattr], [fs/libfs.c],
 663         [AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 664                 [simple_setattr is exported by the kernel])])
 665 ]) # LC_EXPORT_SIMPLE_SETATTR
 666
 667 #
 668 # LC_IOP_TRUNCATE
 669 #
 670 # truncate callback removed since 2.6.39
 671 #
 672 AC_DEFUN([LC_IOP_TRUNCATE], [
 673 LB_CHECK_COMPILE([if 'inode_operations' has '.truncate' member function],
 674 inode_ops_truncate, [
 675         #include <linux/fs.h>
 676 ],[
 677         ((struct inode_operations *)0)->truncate(NULL);
 678 ],[
 679         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 680                 [inode_operations has .truncate member function])
 681 ])
 682 ]) # LC_IOP_TRUNCATE
 683
 684 #
 685 # LC_REQUEST_QUEUE_UNPLUG_FN
 686 #
 687 # 2.6.39 remove unplug_fn from request_queue.
 688 #
 689 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN], [
 690 LB_CHECK_COMPILE([if 'request_queue' has 'unplug_fn' field],
 691 request_queue_unplug_fn, [
 692         #include <linux/blkdev.h>
 693 ],[
 694         do {} while(sizeof(((struct request_queue *)0)->unplug_fn));
 695 ],[
 696         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
 697                 [request_queue has unplug_fn field])
 698 ])
 699 ]) # LC_REQUEST_QUEUE_UNPLUG_FN
 700
 701 #
 702 # LC_HAVE_FSTYPE_MOUNT
 703 #
 704 # 2.6.39 replace get_sb with mount in struct file_system_type
 705 #
 706 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT], [
 707 LB_CHECK_COMPILE([if 'file_system_type' has 'mount' field],
 708 file_system_type_mount, [
 709         #include <linux/fs.h>
 710 ],[
 711         struct file_system_type fst;
 712         void *i = (void *) fst.mount;
 713 ],[
 714         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 715                 [struct file_system_type has mount field])
 716 ])
 717 ]) # LC_HAVE_FSTYPE_MOUNT
 718
 719 #
 720 # LC_HAVE_FHANDLE_SYSCALLS
 721 #
 722 # 2.6.39 The open_by_handle_at() and name_to_handle_at() system calls were
 723 # added to Linux kernel 2.6.39.
 724 # Check if client supports these functions
 725 #
 726 AC_DEFUN([LC_HAVE_FHANDLE_SYSCALLS], [
 727 LB_CHECK_CONFIG_IM([FHANDLE],[
 728         AC_DEFINE(HAVE_FHANDLE_SYSCALLS, 1,
 729                 [kernel supports fhandles and related syscalls])
 730         ])
 731 ]) # LC_HAVE_FHANDLE_SYSCALLS
 732
 733 #
 734 # LC_HAVE_INODE_OWNER_OR_CAPABLE
 735 #
 736 # 2.6.39 renames is_owner_or_cap to inode_owner_or_capable
 737 #
 738 AC_DEFUN([LC_HAVE_INODE_OWNER_OR_CAPABLE], [
 739 LB_CHECK_COMPILE([if 'inode_owner_or_capable' exist],
 740 inode_owner_or_capable, [
 741         #include <linux/fs.h>
 742 ],[
 743         inode_owner_or_capable(NULL);
 744 ],[
 745         AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
 746                 [inode_owner_or_capable exist])
 747 ])
 748 ]) # LC_HAVE_INODE_OWNER_OR_CAPABLE
 749
 750 #
 751 # LC_DIRTY_INODE_WITH_FLAG
 752 #
 753 # 3.0 dirty_inode() has a flag parameter
 754 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 755 #
 756 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG], [
 757 LB_CHECK_COMPILE([if 'dirty_inode' super_operation takes flag],
 758 dirty_inode_super_operation_flag, [
 759         #include <linux/fs.h>
 760 ],[
 761         struct inode *inode;
 762         inode->i_sb->s_op->dirty_inode(NULL, 0);
 763 ],[
 764         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 765                 [dirty_inode super_operation takes flag])
 766 ])
 767 ]) # LC_DIRTY_INODE_WITH_FLAG
 768
 769 #
 770 # LC_GENERIC_PERMISSION
 771 #
 772 # 2.6.38 generic_permission taken 4 parameters.
 773 # in fact, it means rcu-walk aware permission bring.
 774 #
 775 # 3.1 generic_permission taken 2 parameters.
 776 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 777 #
 778 AC_DEFUN([LC_GENERIC_PERMISSION], [
 779 LB_CHECK_COMPILE([if 'generic_permission' take 2 arguments],
 780 generic_permission_2args, [
 781         #include <linux/fs.h>
 782 ],[
 783         generic_permission(NULL, 0);
 784 ],[
 785         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 786                 [generic_permission taken 2 arguments])
 787 ],[
 788         LB_CHECK_COMPILE([if 'generic_permission' take 4 arguments],
 789         generic_permission_4args, [
 790                 #include <linux/fs.h>
 791         ],[
 792                 generic_permission(NULL, 0, 0, NULL);
 793         ],[
 794                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 795                         [generic_permission taken 4 arguments])
 796         ])
 797 ])
 798 ]) # LC_GENERIC_PERMISSION
 799
 800 #
 801 # LC_LM_XXX_LOCK_MANAGER_OPS
 802 #
 803 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 804 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 805 #
 806 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS], [
 807 LB_CHECK_COMPILE([if 'lock-manager' ops renamed to 'lm_xxx'],
 808 lock_manager_ops_lm_xxx, [
 809         #include <linux/fs.h>
 810 ],[
 811         struct lock_manager_operations lm_ops;
 812         lm_ops.lm_compare_owner = NULL;
 813 ],[
 814         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 815                 [lock-manager ops renamed to lm_xxx])
 816 ])
 817 ]) # LC_LM_XXX_LOCK_MANAGER_OPS
 818
 819 #
 820 # LC_INODE_DIO_WAIT
 821 #
 822 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait/
 823 #     inode_dio_done instead.
 824 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 825 #
 826 AC_DEFUN([LC_INODE_DIO_WAIT], [
 827 LB_CHECK_COMPILE([if 'inode->i_alloc_sem' is killed and use inode_dio_wait/done],
 828 inode_dio_wait, [
 829         #include <linux/fs.h>
 830 ],[
 831         inode_dio_wait((struct inode *)0);
 832         inode_dio_done((struct inode *)0);
 833 ],[
 834         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 835                 [inode->i_alloc_sem is killed and use inode_dio_wait/done])
 836 ])
 837 ]) # LC_INODE_DIO_WAIT
 838
 839 #
 840 # LC_IOP_GET_ACL
 841 #
 842 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 843 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 844 #
 845 AC_DEFUN([LC_IOP_GET_ACL], [
 846 LB_CHECK_COMPILE([if 'inode_operations' has '.get_acl' member function],
 847 inode_ops_get_acl, [
 848         #include <linux/fs.h>
 849 ],[
 850         struct inode_operations iop;
 851         iop.get_acl = NULL;
 852 ],[
 853         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 854                 [inode_operations has .get_acl member function])
 855 ])
 856 ]) # LC_IOP_GET_ACL
 857
 858 #
 859 # LC_FILE_LLSEEK_SIZE
 860 #
 861 # 3.1 introduced generic_file_llseek_size()
 862 #
 863 AC_DEFUN([LC_FILE_LLSEEK_SIZE], [
 864 LB_CHECK_EXPORT([generic_file_llseek_size], [fs/read_write.c],
 865         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 866                 [generic_file_llseek_size is exported by the kernel])])
 867 ]) # LC_FILE_LLSEEK_SIZE
 868
 869 #
 870 # LC_RADIX_EXCEPTION_ENTRY
 871 # 3.1 adds radix_tree_exception_entry.
 872 #
 873 AC_DEFUN([LC_RADIX_EXCEPTION_ENTRY], [
 874 LB_CHECK_COMPILE([radix_tree_exceptional_entry exist],
 875 radix_tree_exceptional_entry, [
 876         #include <linux/radix-tree.h>
 877 ],[
 878         radix_tree_exceptional_entry(NULL);
 879 ],[
 880         AC_DEFINE(HAVE_RADIX_EXCEPTION_ENTRY, 1,
 881                 [radix_tree_exceptional_entry exist])
 882 ])
 883 ]) # LC_RADIX_EXCEPTION_ENTRY
 884
 885 #
 886 # LC_HAVE_VOID_MAKE_REQUEST_FN
 887 #
 888 # 3.2 request_queue.make_request_fn defined as function returns with void
 889 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
 890 #
 891 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN], [
 892 LB_CHECK_COMPILE([if 'request_queue.make_request_fn' returns void but not int],
 893 make_request_fn_void, [
 894         #include <linux/blkdev.h>
 895 ],[
 896         int ret;
 897         make_request_fn *mrf;
 898         ret = mrf(NULL, NULL);
 899 ],[],[
 900         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
 901                 [request_queue.make_request_fn returns void but not int])
 902 ])
 903 ]) # LC_HAVE_VOID_MAKE_REQUEST_FN
 904
 905 #
 906 # LC_HAVE_PROTECT_I_NLINK
 907 #
 908 # 3.2 protects inode->i_nlink from direct modification
 909 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 910 # at the same time adds set_nlink(), so checks set_nlink() for it.
 911 #
 912 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK], [
 913 LB_CHECK_COMPILE([if 'inode->i_nlink' is protected from direct modification],
 914 inode_i_nlink_protected, [
 915         #include <linux/fs.h>
 916 ],[
 917         struct inode i;
 918         set_nlink(&i, 1);
 919 ],[
 920         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 921                 [inode->i_nlink is protected from direct modification])
 922 ])
 923 ]) # LC_HAVE_PROTECT_I_NLINK
 924
 925 #
 926 # LC_HAVE_MIGRATE_HEADER
 927 #
 928 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 929 #
 930 AC_DEFUN([LC_HAVE_MIGRATE_HEADER], [
 931 LB_CHECK_FILE([$LINUX/include/linux/migrate.h], [
 932         AC_DEFINE(HAVE_MIGRATE_H, 1,
 933                 [kernel has include/linux/migrate.h])
 934 ],[
 935         LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h], [
 936                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 937                         [kernel has include/linux/migrate_mode.h])
 938         ])
 939 ])
 940 ]) # LC_HAVE_MIGRATE_HEADER
 941
 942 #
 943 # LC_MIGRATEPAGE_4ARGS
 944 #
 945 AC_DEFUN([LC_MIGRATEPAGE_4ARGS], [
 946 LB_CHECK_COMPILE([if 'address_space_operations.migratepage' has 4 args],
 947 address_space_ops_migratepage_4args, [
 948         #include <linux/fs.h>
 949 #ifdef HAVE_MIGRATE_H
 950         #include <linux/migrate.h>
 951 #elif defined(HAVE_MIGRATE_MODE_H)
 952         #include <linux/migrate_mode.h>
 953 #endif
 954 ],[
 955         struct address_space_operations aops;
 956         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
 957 ],[
 958         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
 959                 [address_space_operations.migratepage has 4 args])
 960 ])
 961 ]) # LC_MIGRATEPAGE_4ARGS
 962
 963 #
 964 # LC_SUPEROPS_USE_DENTRY
 965 #
 966 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
 967 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
 968 #
 969 AC_DEFUN([LC_SUPEROPS_USE_DENTRY], [
 970 tmp_flags="$EXTRA_KCFLAGS"
 971 EXTRA_KCFLAGS="-Werror"
 972 LB_CHECK_COMPILE([if 'super_operations' use 'dentry' as parameter],
 973 super_ops_dentry, [
 974         #include <linux/fs.h>
 975         int show_options(struct seq_file *seq, struct dentry *root) {
 976                 return 0;
 977         }
 978 ],[
 979         struct super_operations ops;
 980         ops.show_options = show_options;
 981 ],[
 982         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
 983                 [super_operations use dentry as parameter])
 984 ])
 985 EXTRA_KCFLAGS="$tmp_flags"
 986 ]) # LC_SUPEROPS_USE_DENTRY
 987
 988 #
 989 # LC_INODEOPS_USE_UMODE_T
 990 #
 991 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
 992 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
 993 #
 994 AC_DEFUN([LC_INODEOPS_USE_UMODE_T], [
 995 tmp_flags="$EXTRA_KCFLAGS"
 996 EXTRA_KCFLAGS="-Werror"
 997 LB_CHECK_COMPILE([if 'inode_operations' use 'umode_t' as parameter],
 998 inode_ops_umode_t, [
 999         #include <linux/fs.h>
1000         #include <linux/types.h>
1001         int my_mknod(struct inode *dir, struct dentry *dchild,
1002                      umode_t mode, dev_t dev)
1003         {
1004                 return 0;
1005         }
1006 ],[
1007         struct inode_operations ops;
1008         ops.mknod = my_mknod;
1009 ],[
1010         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1011                 [inode_operations use umode_t as parameter])
1012 ])
1013 EXTRA_KCFLAGS="$tmp_flags"
1014 ]) # LC_INODEOPS_USE_UMODE_T
1015
1016 #
1017 # LC_KMAP_ATOMIC_HAS_1ARG
1018 #
1019 # 3.4 kmap_atomic removes second argument
1020 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1021 #
1022 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG], [
1023 LB_CHECK_COMPILE([if 'kmap_atomic' has only 1 argument],
1024 kmap_atomic_1arg, [
1025         #include <linux/highmem.h>
1026 ],[
1027         kmap_atomic(NULL);
1028 ],[
1029         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1030                 [have kmap_atomic has only 1 argument])
1031 ])
1032 ]) # LC_KMAP_ATOMIC_HAS_1ARG
1033
1034 #
1035 # LC_HAVE_D_MAKE_ROOT
1036 #
1037 # 3.4 converts d_alloc_root to d_make_root
1038 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1039 #
1040 AC_DEFUN([LC_HAVE_D_MAKE_ROOT], [
1041 LB_CHECK_COMPILE([if have 'd_make_root'],
1042 d_make_root, [
1043         #include <linux/fs.h>
1044 ],[
1045         d_make_root((struct inode *)NULL);
1046 ],[
1047         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1048                 [have d_make_root])
1049 ])
1050 ]) # LC_HAVE_D_MAKE_ROOT
1051
1052 #
1053 # LC_HAVE_CACHE_REGISTER
1054 #
1055 # 3.4 cache_register/cache_unregister are removed
1056 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1057 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1058 # are defined, but not exported.
1059 # 3.3 cache_register_net/cache_unregister_net are
1060 # exported and replacing cache_register/cache_unregister in 3.4
1061 #
1062 AC_DEFUN([LC_HAVE_CACHE_REGISTER], [
1063 LB_CHECK_COMPILE([if have 'cache_register'],
1064 cache_register, [
1065         #include <linux/sunrpc/cache.h>
1066 ],[
1067         cache_register(NULL);
1068 ],[
1069         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1070                 [have cache_register])
1071 ])
1072 ]) # LC_HAVE_CACHE_REGISTER
1073
1074 #
1075 # LC_HAVE_CLEAR_INODE
1076 #
1077 # 3.5 renames end_writeback() back to clear_inode()...
1078 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1079 #
1080 AC_DEFUN([LC_HAVE_CLEAR_INODE], [
1081 LB_CHECK_COMPILE([if have 'clear_inode'],
1082 clear_inode, [
1083         #include <linux/fs.h>
1084 ],[
1085         clear_inode((struct inode *)NULL);
1086 ],[
1087         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1088                 [have clear_inode])
1089 ])
1090 ]) # LC_HAVE_CLEAR_INODE
1091
1092 #
1093 # LC_HAVE_ENCODE_FH_PARENT
1094 #
1095 # 3.5 encode_fh has parent inode passed in directly
1096 # see kernel commit b0b0382b
1097 #
1098 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT], [
1099 tmp_flags="$EXTRA_KCFLAGS"
1100 EXTRA_KCFLAGS="-Werror"
1101 LB_CHECK_COMPILE([if 'encode_fh' have parent inode as parameter],
1102 encode_fh_parent_inode, [
1103         #include <linux/exportfs.h>
1104         #include <linux/fs.h>
1105         #include <linux/types.h>
1106         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1107         {
1108                 return 0;
1109         }
1110 ],[
1111         struct export_operations exp_op;
1112         exp_op.encode_fh = ll_encode_fh;
1113 ],[
1114         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1115                 [have parent inode as parameter])
1116 ])
1117 EXTRA_KCFLAGS="$tmp_flags"
1118 ]) # LC_HAVE_ENCODE_FH_PARENT
1119
1120 #
1121 # LC_FILE_LLSEEK_SIZE_5ARG
1122 #
1123 # 3.5 has generic_file_llseek_size with 5 args
1124 #
1125 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG], [
1126 LB_CHECK_COMPILE([if Linux kernel has 'generic_file_llseek_size' with 5 args],
1127 generic_file_llseek_size_5args, [
1128         #include <linux/fs.h>
1129 ],[
1130         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1131 ], [
1132         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1133                 [kernel has generic_file_llseek_size with 5 args])
1134 ])
1135 ]) # LC_FILE_LLSEEK_SIZE_5ARG
1136
1137 #
1138 # LC_HAVE_DENTRY_D_ALIAS_HLIST
1139 #
1140 # 3.6 switch i_dentry/d_alias from list to hlist
1141 #
1142 AC_DEFUN([LC_HAVE_DENTRY_D_ALIAS_HLIST], [
1143 tmp_flags="$EXTRA_KCFLAGS"
1144 EXTRA_KCFLAGS="-Werror"
1145 LB_CHECK_COMPILE([if 'i_dentry/d_alias' uses 'hlist'],
1146 i_dentry_d_alias_hlist, [
1147         #include <linux/fs.h>
1148         #include <linux/list.h>
1149 ],[
1150         struct inode inode;
1151         struct dentry dentry;
1152         struct hlist_head head;
1153         struct hlist_node node;
1154         inode.i_dentry = head;
1155         dentry.d_alias = node;
1156 ],[
1157         AC_DEFINE(HAVE_DENTRY_D_ALIAS_HLIST, 1,
1158                 [have i_dentry/d_alias uses hlist])
1159 ])
1160 EXTRA_KCFLAGS="$tmp_flags"
1161 ]) # LC_HAVE_DENTRY_D_ALIAS_HLIST
1162
1163 #
1164 # LC_DENTRY_OPEN_USE_PATH
1165 #
1166 # 3.6 dentry_open uses struct path as first argument
1167 # see kernel commit 765927b2
1168 #
1169 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH], [
1170 tmp_flags="$EXTRA_KCFLAGS"
1171 EXTRA_KCFLAGS="-Werror"
1172 LB_CHECK_COMPILE([if 'dentry_open' uses 'struct path' as first argument],
1173 dentry_open_path, [
1174         #include <linux/fs.h>
1175         #include <linux/path.h>
1176 ],[
1177         struct path path;
1178         dentry_open(&path, 0, NULL);
1179 ],[
1180         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1181                 [dentry_open uses struct path as first argument])
1182 ])
1183 EXTRA_KCFLAGS="$tmp_flags"
1184 ]) # LC_DENTRY_OPEN_USE_PATH
1185
1186 #
1187 # LC_HAVE_IOP_ATOMIC_OPEN
1188 #
1189 # 3.6 vfs adds iop->atomic_open
1190 #
1191 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN], [
1192 LB_CHECK_COMPILE([if 'iop' has 'atomic_open'],
1193 inode_ops_atomic_open, [
1194         #include <linux/fs.h>
1195 ],[
1196         struct inode_operations iop;
1197         iop.atomic_open = NULL;
1198 ],[
1199         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1200                 [have iop atomic_open])
1201 ])
1202 ]) # LC_HAVE_IOP_ATOMIC_OPEN
1203
1204 #
1205 # LC_HAVE_POSIXACL_USER_NS
1206 #
1207 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1208 #
1209 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS], [
1210 LB_CHECK_COMPILE([if 'posix_acl_to_xattr' takes 'struct user_namespace'],
1211 posix_acl_to_xattr_user_namespace, [
1212         #include <linux/fs.h>
1213         #include <linux/posix_acl_xattr.h>
1214 ],[
1215         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1216 ],[
1217         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1218                 [posix_acl_to_xattr takes struct user_namespace])
1219 ])
1220 ]) # LC_HAVE_POSIXACL_USER_NS
1221
1222 #
1223 # LC_HAVE_FILE_F_INODE
1224 #
1225 # 3.8 struct file has new member f_inode
1226 #
1227 AC_DEFUN([LC_HAVE_FILE_F_INODE], [
1228 LB_CHECK_COMPILE([if 'struct file' has memeber 'f_inode'],
1229 file_f_inode, [
1230         #include <linux/fs.h>
1231 ],[
1232         ((struct file *)0)->f_inode = NULL;
1233 ],[
1234         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1235                 [struct file has memeber f_inode])
1236 ])
1237 ]) # LC_HAVE_FILE_F_INODE
1238
1239 #
1240 # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1241 #
1242 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS], [
1243 LB_CHECK_COMPILE([if 'sunrpc_cache_pipe_upcall' takes 3 args],
1244 sunrpc_cache_pipe_upcall_3args, [
1245         #include <linux/sunrpc/cache.h>
1246 ],[
1247         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1248 ],[
1249         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1250                 [sunrpc_cache_pipe_upcall takes 3 args])
1251 ])
1252 ]) # LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1253
1254 #
1255 # LC_HAVE_HLIST_FOR_EACH_3ARG
1256 #
1257 # 3.9 uses hlist_for_each_entry with 3 args
1258 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1259 #
1260 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG], [
1261 LB_CHECK_COMPILE([if 'hlist_for_each_entry' has 3 args],
1262 hlist_for_each_entry_3args, [
1263         #include <linux/list.h>
1264         #include <linux/fs.h>
1265 ],[
1266         struct inode *inode;
1267         struct dentry *dentry;
1268         hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
1269                 continue;
1270         }
1271 ],[
1272         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1,
1273                 [hlist_for_each_entry has 3 args])
1274 ])
1275 ]) # LC_HAVE_HLIST_FOR_EACH_3ARG
1276
1277 #
1278 # LC_HAVE_BIO_END_SECTOR
1279 #
1280 # 3.9 introduces bio_end_sector macro
1281 # f73a1c7d117d07a96d89475066188a2b79e53c48
1282 #
1283 AC_DEFUN([LC_HAVE_BIO_END_SECTOR], [
1284 LB_CHECK_COMPILE([if 'bio_end_sector is defined],
1285 bio_end_sector, [
1286         #include <linux/bio.h>
1287 ],[
1288         struct bio bio;
1289
1290         bio_end_sector(&bio);
1291 ],[
1292         AC_DEFINE(HAVE_BIO_END_SECTOR, 1,
1293                   [bio_end_sector is defined])
1294 ])
1295 ]) # LC_HAVE_BIO_END_SECTOR
1296
1297 #
1298 # LC_HAVE_ONLY_PROCFS_SEQ
1299 #
1300 # 3.10+ only supports procfs seq_files handling
1301 #
1302 AC_DEFUN([LC_HAVE_ONLY_PROCFS_SEQ], [
1303 LB_CHECK_COMPILE([if procfs only supports using 'seq_files'],
1304 only_procfs_seq_files, [
1305         #include <linux/proc_fs.h>
1306 ],[
1307         ((struct proc_dir_entry *)0)->write_proc(NULL, NULL, 0, NULL);
1308 ], [], [
1309         AC_DEFINE(HAVE_ONLY_PROCFS_SEQ, 1,
1310                 [only seq_files supported])
1311 ])
1312 ]) # LC_HAVE_ONLY_PROCFS_SEQ
1313
1314 #
1315 # LC_BLKDEV_RELEASE_RETURN_INT
1316 #
1317 # 3.10 release for block device doesn't return int
1318 #
1319 AC_DEFUN([LC_BLKDEV_RELEASE_RETURN_INT], [
1320 LB_CHECK_COMPILE([if 'block_device_operations' release returns 'int'],
1321 block_device_ops_release_return_int, [
1322         #include <linux/blkdev.h>
1323 ],[
1324         struct block_device_operations fops;
1325         int i __attribute__ ((unused));
1326
1327         i = fops.release(NULL, 0);
1328 ],[
1329         AC_DEFINE(HAVE_BLKDEV_RELEASE_RETURN_INT, 1,
1330                 [block device release returns int])
1331 ])
1332 ]) # LC_BLKDEV_RELEASE_RETURN_INT
1333
1334 #
1335 # LC_INVALIDATE_RANGE
1336 #
1337 # 3.11 invalidatepage requires the length of the range to invalidate
1338 #
1339 AC_DEFUN([LC_INVALIDATE_RANGE], [
1340 LB_CHECK_COMPILE([if 'address_space_operations.invalidatepage' requires 3 arguments],
1341 address_space_ops_invalidatepage_3args, [
1342         #include <linux/fs.h>
1343 ],[
1344         struct address_space_operations a_ops;
1345         a_ops.invalidatepage(NULL, 0, 0);
1346 ],[
1347         AC_DEFINE(HAVE_INVALIDATE_RANGE, 1,
1348                 [address_space_operations.invalidatepage needs 3 arguments])
1349 ])
1350 ]) # LC_INVALIDATE_RANGE
1351
1352 #
1353 # LC_HAVE_DIR_CONTEXT
1354 #
1355 # 3.11 readdir now takes the new struct dir_context
1356 #
1357 AC_DEFUN([LC_HAVE_DIR_CONTEXT], [
1358 LB_CHECK_COMPILE([if 'dir_context' exist],
1359 dir_context, [
1360         #include <linux/fs.h>
1361 ],[
1362         struct dir_context ctx;
1363         ctx.pos = 0;
1364 ],[
1365         AC_DEFINE(HAVE_DIR_CONTEXT, 1,
1366                 [dir_context exist])
1367 ])
1368 ]) # LC_HAVE_DIR_CONTEXT
1369
1370 #
1371 # LC_D_COMPARE_5ARGS
1372 #
1373 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1374 #
1375 AC_DEFUN([LC_D_COMPARE_5ARGS], [
1376 LB_CHECK_COMPILE([if 'd_compare' taken 5 arguments],
1377 d_compare_5args, [
1378         #include <linux/dcache.h>
1379 ],[
1380         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1381 ],[
1382         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1383                 [d_compare need 5 arguments])
1384 ])
1385 ]) # LC_D_COMPARE_5ARGS
1386
1387 #
1388 # LC_HAVE_DCOUNT
1389 #
1390 # 3.11 need to access d_count to get dentry reference count
1391 #
1392 AC_DEFUN([LC_HAVE_DCOUNT], [
1393 LB_CHECK_COMPILE([if 'd_count' exist],
1394 d_count, [
1395         #include <linux/dcache.h>
1396 ],[
1397         struct dentry de;
1398         d_count(&de);
1399 ],[
1400         AC_DEFINE(HAVE_D_COUNT, 1,
1401                 [d_count exist])
1402 ])
1403 ]) # LC_HAVE_DCOUNT
1404
1405 #
1406 # LC_OLDSIZE_TRUNCATE_PAGECACHE
1407 #
1408 # 3.12 truncate_pagecache without oldsize parameter
1409 #
1410 AC_DEFUN([LC_OLDSIZE_TRUNCATE_PAGECACHE], [
1411 LB_CHECK_COMPILE([if 'truncate_pagecache' with 'old_size' parameter],
1412 truncate_pagecache_old_size, [
1413         #include <linux/mm.h>
1414 ],[
1415         truncate_pagecache(NULL, 0, 0);
1416 ],[
1417         AC_DEFINE(HAVE_OLDSIZE_TRUNCATE_PAGECACHE, 1,
1418                 [with oldsize])
1419 ])
1420 ]) # LC_OLDSIZE_TRUNCATE_PAGECACHE
1421
1422 #
1423 # LC_KIOCB_KI_LEFT
1424 #
1425 # 3.12 ki_left removed from struct kiocb
1426 #
1427 AC_DEFUN([LC_KIOCB_KI_LEFT], [
1428 LB_CHECK_COMPILE([if 'struct kiocb' with 'ki_left' member],
1429 kiocb_ki_left, [
1430         #include <linux/aio.h>
1431 ],[
1432         ((struct kiocb*)0)->ki_left = 0;
1433 ],[
1434         AC_DEFINE(HAVE_KIOCB_KI_LEFT, 1,
1435                 [ki_left exist])
1436 ])
1437 ]) # LC_KIOCB_KI_LEFT
1438
1439 #
1440 # LC_VFS_RENAME_5ARGS
1441 #
1442 # 3.13 has vfs_rename with 5 args
1443 #
1444 AC_DEFUN([LC_VFS_RENAME_5ARGS], [
1445 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 5 args],
1446 vfs_rename_5args, [
1447         #include <linux/fs.h>
1448 ],[
1449         vfs_rename(NULL, NULL, NULL, NULL, NULL);
1450 ], [
1451         AC_DEFINE(HAVE_VFS_RENAME_5ARGS, 1,
1452                 [kernel has vfs_rename with 5 args])
1453 ])
1454 ]) # LC_VFS_RENAME_5ARGS
1455
1456 #
1457 # LC_VFS_UNLINK_3ARGS
1458 #
1459 # 3.13 has vfs_unlink with 3 args
1460 #
1461 AC_DEFUN([LC_VFS_UNLINK_3ARGS], [
1462 LB_CHECK_COMPILE([if Linux kernel has 'vfs_unlink' with 3 args],
1463 vfs_unlink_3args, [
1464         #include <linux/fs.h>
1465 ],[
1466         vfs_unlink(NULL, NULL, NULL);
1467 ], [
1468         AC_DEFINE(HAVE_VFS_UNLINK_3ARGS, 1,
1469                 [kernel has vfs_unlink with 3 args])
1470 ])
1471 ]) # LC_VFS_UNLINK_3ARGS
1472
1473 #
1474 # LC_HAVE_BVEC_ITER
1475 #
1476 # 3.14 move some of its data in struct bio into the new
1477 # struct bvec_iter
1478 #
1479 AC_DEFUN([LC_HAVE_BVEC_ITER], [
1480 LB_CHECK_COMPILE([if Linux kernel has struct bvec_iter],
1481 have_bvec_iter, [
1482         #include <linux/bio.h>
1483 ],[
1484         struct bvec_iter iter;
1485         iter.bi_bvec_done = 0;
1486 ], [
1487         AC_DEFINE(HAVE_BVEC_ITER, 1,
1488                 [kernel has struct bvec_iter])
1489 ])
1490 ]) # LC_HAVE_BVEC_ITER
1491
1492 #
1493 # LC_HAVE_TRUNCATE_IPAGE_FINAL
1494 #
1495 # 3.14 bring truncate_inode_pages_final for evict_inode
1496 #
1497 AC_DEFUN([LC_HAVE_TRUNCATE_IPAGES_FINAL], [
1498 LB_CHECK_COMPILE([if Linux kernel has truncate_inode_pages_final],
1499 truncate_ipages_final, [
1500         #include <linux/mm.h>
1501 ],[
1502         truncate_inode_pages_final(NULL);
1503 ], [
1504         AC_DEFINE(HAVE_TRUNCATE_INODE_PAGES_FINAL, 1,
1505                 [kernel has truncate_inode_pages_final])
1506 ])
1507 ]) # LC_HAVE_TRUNCATE_IPAGES_FINAL
1508 #
1509 # LC_VFS_RENAME_6ARGS
1510 #
1511 # 3.15 has vfs_rename with 6 args
1512 #
1513 AC_DEFUN([LC_VFS_RENAME_6ARGS], [
1514 LB_CHECK_COMPILE([if Linux kernel has 'vfs_rename' with 6 args],
1515 vfs_rename_6args, [
1516         #include <linux/fs.h>
1517 ],[
1518         vfs_rename(NULL, NULL, NULL, NULL, NULL, NULL);
1519 ], [
1520         AC_DEFINE(HAVE_VFS_RENAME_6ARGS, 1,
1521                 [kernel has vfs_rename with 6 args])
1522 ])
1523 ]) # LC_VFS_RENAME_6ARGS
1524
1525 #
1526 # LC_PROG_LINUX
1527 #
1528 # Lustre linux kernel checks
1529 #
1530 AC_DEFUN([LC_PROG_LINUX], [
1531         AC_MSG_NOTICE([Lustre kernel checks
1532 ==============================================================================])
1533
1534         LC_CONFIG_PINGER
1535         LC_CONFIG_CHECKSUM
1536         LC_CONFIG_HEALTH_CHECK_WRITE
1537         LC_CONFIG_LRU_RESIZE
1538         LC_LLITE_LLOOP_MODULE
1539
1540         LC_GLIBC_SUPPORT_FHANDLES
1541         LC_CAPA_CRYPTO
1542         LC_CONFIG_RMTCLIENT
1543         LC_CONFIG_GSS
1544
1545         # 2.6.32
1546         LC_BLK_QUEUE_MAX_SEGMENTS
1547
1548         # 2.6.34
1549         LC_HAVE_DQUOT_FS_DISK_QUOTA
1550         LC_HAVE_DQUOT_SUSPEND
1551
1552         # 2.6.35, 3.0.0
1553         LC_FILE_FSYNC
1554         LC_EXPORT_SIMPLE_SETATTR
1555         LC_EXPORT_TRUNCATE_COMPLETE_PAGE
1556
1557         # 2.6.36
1558         LC_FS_STRUCT_RWLOCK
1559         LC_SBOPS_EVICT_INODE
1560
1561         # 2.6.37
1562         LC_KERNEL_LOCKED
1563
1564         # 2.6.38
1565         LC_BLKDEV_GET_BY_DEV
1566         LC_GENERIC_PERMISSION
1567         LC_DCACHE_LOCK
1568         LC_INODE_I_RCU
1569         LC_D_COMPARE_7ARGS
1570         LC_D_DELETE_CONST
1571
1572         # 2.6.39
1573         LC_REQUEST_QUEUE_UNPLUG_FN
1574         LC_HAVE_FHANDLE_SYSCALLS
1575         LC_HAVE_FSTYPE_MOUNT
1576         LC_IOP_TRUNCATE
1577         LC_HAVE_INODE_OWNER_OR_CAPABLE
1578
1579         # 3.0
1580         LC_DIRTY_INODE_WITH_FLAG
1581
1582         # 3.1
1583         LC_LM_XXX_LOCK_MANAGER_OPS
1584         LC_INODE_DIO_WAIT
1585         LC_IOP_GET_ACL
1586         LC_FILE_LLSEEK_SIZE
1587         LC_INODE_PERMISION_2ARGS
1588         LC_RADIX_EXCEPTION_ENTRY
1589
1590         # 3.2
1591         LC_HAVE_VOID_MAKE_REQUEST_FN
1592         LC_HAVE_PROTECT_I_NLINK
1593
1594         # 3.3
1595         LC_HAVE_MIGRATE_HEADER
1596         LC_MIGRATEPAGE_4ARGS
1597         LC_SUPEROPS_USE_DENTRY
1598         LC_INODEOPS_USE_UMODE_T
1599         LC_HAVE_CACHE_REGISTER
1600
1601         # 3.4
1602         LC_HAVE_D_MAKE_ROOT
1603         LC_KMAP_ATOMIC_HAS_1ARG
1604
1605         # 3.5
1606         LC_HAVE_CLEAR_INODE
1607         LC_HAVE_ENCODE_FH_PARENT
1608         LC_FILE_LLSEEK_SIZE_5ARG
1609
1610         # 3.6
1611         LC_HAVE_DENTRY_D_ALIAS_HLIST
1612         LC_DENTRY_OPEN_USE_PATH
1613         LC_HAVE_IOP_ATOMIC_OPEN
1614
1615         # 3.7
1616         LC_HAVE_POSIXACL_USER_NS
1617
1618         # 3.8
1619         LC_HAVE_FILE_F_INODE
1620         LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1621
1622         # 3.9
1623         LC_HAVE_HLIST_FOR_EACH_3ARG
1624         LC_HAVE_BIO_END_SECTOR
1625
1626         # 3.10
1627         LC_HAVE_ONLY_PROCFS_SEQ
1628         LC_BLKDEV_RELEASE_RETURN_INT
1629
1630         # 3.11
1631         LC_INVALIDATE_RANGE
1632         LC_HAVE_DIR_CONTEXT
1633         LC_D_COMPARE_5ARGS
1634         LC_HAVE_DCOUNT
1635
1636         # 3.12
1637         LC_OLDSIZE_TRUNCATE_PAGECACHE
1638         LC_KIOCB_KI_LEFT
1639
1640         # 3.13
1641         LC_VFS_RENAME_5ARGS
1642         LC_VFS_UNLINK_3ARGS
1643
1644         # 3.14
1645         LC_HAVE_BVEC_ITER
1646         LC_HAVE_TRUNCATE_IPAGES_FINAL
1647
1648         # 3.15
1649         LC_VFS_RENAME_6ARGS
1650
1651         #
1652         AS_IF([test "x$enable_server" != xno], [
1653                 LC_FUNC_DEV_SET_RDONLY
1654                 LC_STACK_SIZE
1655                 LC_QUOTA64
1656                 LC_QUOTA_CONFIG
1657         ])
1658 ]) # LC_PROG_LINUX
1659
1660 #
1661 # LC_CONFIG_CLIENT
1662 #
1663 # Check whether to build the client side of Lustre
1664 #
1665 AC_DEFUN([LC_CONFIG_CLIENT], [
1666 AC_MSG_CHECKING([whether to build Lustre client support])
1667 AC_ARG_ENABLE([client],
1668         AC_HELP_STRING([--disable-client],
1669                 [disable Lustre client support]),
1670         [], [enable_client="yes"])
1671 AC_MSG_RESULT([$enable_client])
1672 ]) # LC_CONFIG_CLIENT
1673
1674 #
1675 # --enable-mpitests
1676 #
1677 AC_DEFUN([LB_CONFIG_MPITESTS], [
1678 AC_ARG_ENABLE([mpitests],
1679         AC_HELP_STRING([--enable-mpitests=<yes|no|mpicc wrapper>],
1680                        [include mpi tests]), [
1681                 enable_mpitests="yes"
1682                 case $enableval in
1683                 yes)
1684                         MPICC_WRAPPER="mpicc"
1685                         ;;
1686                 no)
1687                         enable_mpitests="no"
1688                         ;;
1689                 *)
1690                         MPICC_WRAPPER=$enableval
1691                         ;;
1692                 esac
1693         ], [
1694                 enable_mpitests="yes"
1695                 MPICC_WRAPPER="mpicc"
1696         ])
1697
1698         if test "x$enable_mpitests" != "xno"; then
1699                 oldcc=$CC
1700                 CC=$MPICC_WRAPPER
1701                 AC_CACHE_CHECK([whether mpitests can be built],
1702                 lb_cv_mpi_tests, [AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1703                         #include <mpi.h>
1704                         int main(void) {
1705                                 int flag;
1706                                 MPI_Initialized(&flag);
1707                                 return 0;
1708                         }
1709                 ])], [lb_cv_mpi_tests="yes"], [lb_cv_mpi_tests="no"
1710                         enable_mpitests=$lb_cv_mpi_tests])
1711                 ])
1712                 CC=$oldcc
1713         fi
1714         AC_SUBST(MPICC_WRAPPER)
1715 ]) # LB_CONFIG_MPITESTS
1716
1717 #
1718 # LC_CONFIG_QUOTA
1719 #
1720 # whether to enable quota support global control
1721 #
1722 AC_DEFUN([LC_CONFIG_QUOTA], [
1723 AC_MSG_CHECKING([whether to enable quota support global control])
1724 AC_ARG_ENABLE([quota],
1725         AC_HELP_STRING([--enable-quota],
1726                 [enable quota support]),
1727         [], [enable_quota="yes"])
1728 AS_IF([test "x$enable_quota" = xyes],
1729         [AC_MSG_RESULT([yes])],
1730         [AC_MSG_RESULT([no])])
1731 ]) # LC_CONFIG_QUOTA
1732
1733 #
1734 # LC_QUOTA
1735 #
1736 AC_DEFUN([LC_QUOTA], [
1737 #check global
1738 LC_CONFIG_QUOTA
1739 #check for utils
1740 AS_IF([test "x$enable_quota" != xno -a "x$enable_utils" != xno], [
1741         AC_CHECK_HEADER([sys/quota.h],
1742                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1,
1743                         [Define to 1 if you have <sys/quota.h>.])],
1744                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1745 ])
1746 ]) # LC_QUOTA
1747
1748 #
1749 # LC_CONFIG_SPLIT
1750 #
1751 # whether to enable split support
1752 #
1753 AC_DEFUN([LC_CONFIG_SPLIT], [
1754 AC_MSG_CHECKING([whether to enable split support])
1755 AC_ARG_ENABLE([split],
1756         AC_HELP_STRING([--enable-split],
1757                 [enable split support]),
1758         [], [enable_split='no'])
1759 AC_MSG_RESULT([$enable_split])
1760 AS_IF([test "x$enable_split" != xno],
1761     [AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])])
1762 ]) # LC_CONFIG_SPLIT
1763
1764 #
1765 # LC_CONFIG_NODEMAP_PROC_DEBUG
1766 #
1767 # enable nodemap proc file debugging
1768 #
1769 AC_DEFUN([LC_NODEMAP_PROC_DEBUG], [
1770 AC_MSG_CHECKING([whether to enable nodemap proc debug])
1771 AC_ARG_ENABLE([nodemap_proc_debug],
1772         AC_HELP_STRING([--enable-nodemap-proc-debug],
1773                 [enable nodemap proc debug]),
1774         [], [enable_nodemap_proc_debug="no"])
1775 AC_MSG_RESULT([$enable_nodemap_proc_debug])
1776 AS_IF([test "x$enable_nodemap_proc_debug" != xno],
1777         [AC_DEFINE(NODEMAP_PROC_DEBUG, 1,
1778                 [enable nodemap proc debug support])])
1779 ]) # LC_NODEMAP_PROC_DEBUG
1780
1781 #
1782 # LC_LLITE_LLOOP_MODULE
1783 #
1784 # lloop_llite.ko does not currently work with page sizes
1785 # of 64k or larger.
1786 #
1787 AC_DEFUN([LC_LLITE_LLOOP_MODULE], [
1788 LB_CHECK_COMPILE([whether to enable 'llite_lloop' module],
1789 enable_llite_lloop_module, [
1790         #include <asm/page.h>
1791 ],[
1792         #if PAGE_SIZE >= 65536
1793         #error "PAGE_SIZE >= 65536"
1794         #endif
1795 ],
1796         [enable_llite_lloop_module="yes"],
1797         [enable_llite_lloop_module="no"])
1798 ]) # LC_LLITE_LLOOP_MODULE
1799
1800 #
1801 # LC_OSD_ADDON
1802 #
1803 # configure support for optional OSD implementation
1804 #
1805 AC_DEFUN([LC_OSD_ADDON], [
1806 AC_MSG_CHECKING([whether to use OSD addon])
1807 AC_ARG_WITH([osd],
1808         AC_HELP_STRING([--with-osd=path],
1809                 [set path to optional osd]),
1810         [
1811         case "$with_osd" in
1812         no)
1813                 ENABLEOSDADDON=0
1814                 ;;
1815         *)
1816                 OSDADDON="$with_osd"
1817                 ENABLEOSDADDON=1
1818                 ;;
1819         esac
1820         ], [
1821                 ENABLEOSDADDON=0
1822         ])
1823 AS_IF([test $ENABLEOSDADDON -eq 0], [
1824         AC_MSG_RESULT([no])
1825         OSDADDON=""
1826 ], [
1827         OSDMODNAME=$(basename $OSDADDON)
1828         AS_IF([test -e $LUSTRE/$OSDMODNAME], [
1829                 AC_MSG_RESULT([can't link])
1830                 OSDADDON=""
1831         ], [ln -s $OSDADDON $LUSTRE/$OSDMODNAME], [
1832                 AC_MSG_RESULT([$OSDMODNAME])
1833                 OSDADDON="subdir-m += $OSDMODNAME"
1834         ], [
1835                 AC_MSG_RESULT([can't link])
1836                 OSDADDON=""
1837         ])
1838 ])
1839 AC_SUBST(OSDADDON)
1840 ]) # LC_OSD_ADDON
1841
1842 #
1843 # LC_CONFIGURE
1844 #
1845 # other configure checks
1846 #
1847 AC_DEFUN([LC_CONFIGURE], [
1848 AC_MSG_NOTICE([Lustre core checks
1849 ==============================================================================])
1850
1851 LC_CONFIG_OBD_BUFFER_SIZE
1852
1853 AS_IF([test $target_cpu == "i686" -o $target_cpu == "x86_64"],
1854         [CFLAGS="$CFLAGS -Werror"])
1855
1856 # maximum MDS thread count
1857 LC_MDS_MAX_THREADS
1858
1859 # libcfs/include/libcfs/posix/libcfs.h
1860 # lustre/utils/llverdev.c
1861 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1862
1863 # libcfs/include/libcfs/linux/linux-prim.h, ...
1864 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1865
1866 # libcfs/libcfs/user-tcpip.c
1867 AC_CHECK_HEADERS([netinet/in.h])
1868 AC_CHECK_FUNCS([inet_ntoa])
1869
1870 # libcfs/include/libcfs/linux/linux-prim.h
1871 AC_CHECK_HEADERS([linux/random.h], [], [],
1872                  [#ifdef HAVE_LINUX_TYPES_H
1873                   #include <linux/types.h>
1874                   #endif
1875                  ])
1876
1877 # utils/llverfs.c
1878 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1879
1880 SELINUX=""
1881 AC_CHECK_LIB([selinux], [is_selinux_enabled],
1882         [AC_CHECK_HEADERS([selinux.h],
1883                         [SELINUX="-lselinux"
1884                         AC_DEFINE([HAVE_SELINUX], 1,
1885                                 [support for selinux ])],
1886                         [AC_MSG_WARN([
1887
1888 No selinux-devel package found, unable to build selinux enabled tools
1889 ])
1890 ])],
1891         [AC_MSG_WARN([
1892
1893 No selinux package found, unable to build selinux enabled tools
1894 ])
1895 ])
1896 AC_SUBST(SELINUX)
1897
1898 # Super safe df
1899 AC_MSG_CHECKING([whether to report minimum OST free space])
1900 AC_ARG_ENABLE([mindf],
1901         AC_HELP_STRING([--enable-mindf],
1902                 [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1903         [], [enable_mindf="no"])
1904 AC_MSG_RESULT([$enable_mindf])
1905 AS_IF([test "$enable_mindf" = "yes"],
1906         [AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])])
1907
1908 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1909 AC_ARG_ENABLE([fail_alloc],
1910         AC_HELP_STRING([--disable-fail-alloc],
1911                 [disable randomly alloc failure]),
1912         [], [enable_fail_alloc="yes"])
1913 AC_MSG_RESULT([$enable_fail_alloc])
1914 AS_IF([test "x$enable_fail_alloc" != xno],
1915         [AC_DEFINE([RANDOM_FAIL_ALLOC], 1,
1916                 [enable randomly alloc failure])])
1917
1918 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1919 AC_ARG_ENABLE([invariants],
1920         AC_HELP_STRING([--enable-invariants],
1921                 [enable invariant checking (cpu intensive)]),
1922         [], [enable_invariants="no"])
1923 AC_MSG_RESULT([$enable_invariants])
1924 AS_IF([test "x$enable_invariants" = xyes],
1925         [AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1,
1926                 [enable invariant checking])])
1927
1928 AC_MSG_CHECKING([whether to track references with lu_ref])
1929 AC_ARG_ENABLE([lu_ref],
1930         AC_HELP_STRING([--enable-lu_ref],
1931                 [enable lu_ref reference tracking code]),
1932         [], [enable_lu_ref="no"])
1933 AC_MSG_RESULT([$enable_lu_ref])
1934 AS_IF([test "x$enable_lu_ref" = xyes],
1935         [AC_DEFINE([USE_LU_REF], 1,
1936                 [enable lu_ref reference tracking code])])
1937
1938 AC_MSG_CHECKING([whether to enable page state tracking])
1939 AC_ARG_ENABLE([pgstate-track],
1940         AC_HELP_STRING([--enable-pgstate-track],
1941                 [enable page state tracking]),
1942         [], [enable_pgstat_track="no"])
1943 AC_MSG_RESULT([$enable_pgstat_track])
1944 AS_IF([test "x$enable_pgstat_track" = xyes],
1945         [AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
1946                 [enable page state tracking code])])
1947 ]) # LC_CONFIGURE
1948
1949 #
1950 # LC_CONDITIONALS
1951 #
1952 # AM_CONDITIONALS for lustre
1953 #
1954 AC_DEFUN([LC_CONDITIONALS], [
1955 AM_CONDITIONAL(LIBLUSTRE, false)
1956 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1957 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1958 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1959 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1960 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1961 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1962 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1963 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1964 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1965 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1966 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
1967 ]) # LC_CONDITIONALS
1968
1969 #
1970 # LC_CONFIG_FILES
1971 #
1972 # files that should be generated with AC_OUTPUT
1973 #
1974 AC_DEFUN([LC_CONFIG_FILES],
1975 [AC_CONFIG_FILES([
1976 lustre/Makefile
1977 lustre/autoMakefile
1978 lustre/autoconf/Makefile
1979 lustre/conf/Makefile
1980 lustre/contrib/Makefile
1981 lustre/doc/Makefile
1982 lustre/include/Makefile
1983 lustre/include/lustre_ver.h
1984 lustre/include/linux/Makefile
1985 lustre/include/lustre/Makefile
1986 lustre/kernel_patches/targets/3.10-rhel7.target
1987 lustre/kernel_patches/targets/2.6-rhel6.target
1988 lustre/kernel_patches/targets/2.6-rhel5.target
1989 lustre/kernel_patches/targets/2.6-sles11.target
1990 lustre/kernel_patches/targets/3.0-sles11.target
1991 lustre/kernel_patches/targets/3.0-sles11sp3.target
1992 lustre/kernel_patches/targets/2.6-fc11.target
1993 lustre/kernel_patches/targets/2.6-fc12.target
1994 lustre/kernel_patches/targets/2.6-fc15.target
1995 lustre/kernel_patches/targets/3.x-fc18.target
1996 lustre/ldlm/Makefile
1997 lustre/fid/Makefile
1998 lustre/fid/autoMakefile
1999 lustre/llite/Makefile
2000 lustre/llite/autoMakefile
2001 lustre/lov/Makefile
2002 lustre/lov/autoMakefile
2003 lustre/mdc/Makefile
2004 lustre/mdc/autoMakefile
2005 lustre/lmv/Makefile
2006 lustre/lmv/autoMakefile
2007 lustre/lfsck/Makefile
2008 lustre/lfsck/autoMakefile
2009 lustre/mdt/Makefile
2010 lustre/mdt/autoMakefile
2011 lustre/nodemap/Makefile
2012 lustre/nodemap/autoMakefile
2013 lustre/mdd/Makefile
2014 lustre/mdd/autoMakefile
2015 lustre/fld/Makefile
2016 lustre/fld/autoMakefile
2017 lustre/obdclass/Makefile
2018 lustre/obdclass/autoMakefile
2019 lustre/obdclass/linux/Makefile
2020 lustre/obdecho/Makefile
2021 lustre/obdecho/autoMakefile
2022 lustre/ofd/Makefile
2023 lustre/ofd/autoMakefile
2024 lustre/osc/Makefile
2025 lustre/osc/autoMakefile
2026 lustre/ost/Makefile
2027 lustre/ost/autoMakefile
2028 lustre/osd-ldiskfs/Makefile
2029 lustre/osd-ldiskfs/autoMakefile
2030 lustre/osd-zfs/Makefile
2031 lustre/osd-zfs/autoMakefile
2032 lustre/mgc/Makefile
2033 lustre/mgc/autoMakefile
2034 lustre/mgs/Makefile
2035 lustre/mgs/autoMakefile
2036 lustre/target/Makefile
2037 lustre/ptlrpc/Makefile
2038 lustre/ptlrpc/autoMakefile
2039 lustre/ptlrpc/gss/Makefile
2040 lustre/ptlrpc/gss/autoMakefile
2041 lustre/quota/Makefile
2042 lustre/quota/autoMakefile
2043 lustre/scripts/Makefile
2044 lustre/tests/Makefile
2045 lustre/tests/mpi/Makefile
2046 lustre/utils/Makefile
2047 lustre/utils/gss/Makefile
2048 lustre/osp/Makefile
2049 lustre/osp/autoMakefile
2050 lustre/lod/Makefile
2051 lustre/lod/autoMakefile
2052 ])
2053 ]) # LC_CONFIG_FILES