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 ])
  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* | darwin*)
  41 $1
  42                 ;;
  43         *)
  44 $2
  45                 ;;
  46 esac
  47 ])
  48
  49 #
  50 # LC_CONFIG_OBD_BUFFER_SIZE
  51 #
  52 # the maximum buffer size of lctl ioctls
  53 #
  54 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
  55 [AC_MSG_CHECKING([maximum OBD ioctl size])
  56 AC_ARG_WITH([obd-buffer-size],
  57         AC_HELP_STRING([--with-obd-buffer-size=[size]],
  58                         [set lctl ioctl maximum bytes (default=8192)]),
  59         [
  60                 OBD_BUFFER_SIZE=$with_obd_buffer_size
  61         ],[
  62                 OBD_BUFFER_SIZE=8192
  63         ])
  64 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
  65 AC_DEFINE_UNQUOTED(CONFIG_LUSTRE_OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
  66 ])
  67
  68 #
  69 # LC_READLINK_SSIZE_T
  70 #
  71 AC_DEFUN([LC_READLINK_SSIZE_T],
  72 [AC_MSG_CHECKING([if readlink returns ssize_t])
  73 AC_TRY_COMPILE([
  74         #include <unistd.h>
  75 ],[
  76         ssize_t readlink(const char *, char *, size_t);
  77 ],[
  78         AC_MSG_RESULT([yes])
  79         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
  80 ],[
  81         AC_MSG_RESULT([no])
  82 ])
  83 ])
  84
  85 #
  86 # LC_FUNC_DEV_SET_RDONLY
  87 #
  88 # check whether dev_set_rdonly is exported.  This is needed until we
  89 # have another mechanism to fence IO from the underlying device.
  90 #
  91 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
  92 [LB_CHECK_SYMBOL_EXPORT([dev_set_rdonly],
  93 [block/ll_rw_block.c,block/blk-core.c],[
  94         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel exports dev_set_rdonly])
  95 ],[
  96         AC_MSG_WARN([kernel missing dev_set_rdonly patch for testing])
  97 ])
  98 ])
  99
 100 #
 101 # Ensure stack size big than 8k in Lustre server (all kernels)
 102 #
 103 AC_DEFUN([LC_STACK_SIZE],
 104 [AC_MSG_CHECKING([stack size big than 8k])
 105 LB_LINUX_TRY_COMPILE([
 106         #include <linux/thread_info.h>
 107 ],[
 108         #if THREAD_SIZE < 8192
 109         #error "stack size < 8192"
 110         #endif
 111 ],[
 112         AC_MSG_RESULT(yes)
 113 ],[
 114         AC_MSG_ERROR([Lustre requires that Linux is configured with at least a 8KB stack.])
 115 ])
 116 ])
 117
 118 #
 119 # Allow the user to set the MDS thread upper limit
 120 #
 121 AC_DEFUN([LC_MDS_MAX_THREADS],
 122 [
 123         AC_ARG_WITH([mds_max_threads],
 124         AC_HELP_STRING([--with-mds-max-threads=count],
 125                        [maximum threads available on the MDS: (default=512)]),
 126         [
 127                 MDS_THREAD_COUNT=$with_mds_max_threads
 128                 AC_DEFINE_UNQUOTED(MDS_MAX_THREADS, $MDS_THREAD_COUNT, [maximum number of MDS threads])
 129         ])
 130 ])
 131
 132 #
 133 # LC_CONFIG_PINGER
 134 #
 135 # the pinger is temporary, until we have the recovery node in place
 136 #
 137 AC_DEFUN([LC_CONFIG_PINGER],
 138 [AC_MSG_CHECKING([whether to enable pinger support])
 139 AC_ARG_ENABLE([pinger],
 140         AC_HELP_STRING([--disable-pinger],
 141                         [disable recovery pinger support]),
 142         [],[enable_pinger='yes'])
 143 AC_MSG_RESULT([$enable_pinger])
 144 if test x$enable_pinger != xno ; then
 145   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 146 fi
 147 ])
 148
 149 #
 150 # LC_CONFIG_CHECKSUM
 151 #
 152 # do checksum of bulk data between client and OST
 153 #
 154 AC_DEFUN([LC_CONFIG_CHECKSUM],
 155 [AC_MSG_CHECKING([whether to enable data checksum support])
 156 AC_ARG_ENABLE([checksum],
 157        AC_HELP_STRING([--disable-checksum],
 158                        [disable data checksum support]),
 159        [],[enable_checksum='yes'])
 160 AC_MSG_RESULT([$enable_checksum])
 161 if test x$enable_checksum != xno ; then
 162   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 163 fi
 164 ])
 165
 166 #
 167 # LC_CONFIG_LIBLUSTRE_RECOVERY
 168 #
 169 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 170 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 171 AC_ARG_ENABLE([liblustre-recovery],
 172         AC_HELP_STRING([--disable-liblustre-recovery],
 173                         [disable liblustre recovery support]),
 174         [],[enable_liblustre_recovery='yes'])
 175 AC_MSG_RESULT([$enable_liblustre_recovery])
 176 if test x$enable_liblustre_recovery != xno ; then
 177   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 178 fi
 179 ])
 180
 181 #
 182 # LC_CONFIG_HEALTH_CHECK_WRITE
 183 #
 184 # Turn off the actual write to the disk
 185 #
 186 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 187 [AC_MSG_CHECKING([whether to enable a write with the health check])
 188 AC_ARG_ENABLE([health_write],
 189         AC_HELP_STRING([--enable-health_write],
 190                         [enable disk writes when doing health check]),
 191         [],[enable_health_write='no'])
 192 AC_MSG_RESULT([$enable_health_write])
 193 if test x$enable_health_write != xno ; then
 194   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 195 fi
 196 ])
 197
 198 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
 199 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
 200 AC_ARG_ENABLE([lru_resize],
 201         AC_HELP_STRING([--enable-lru-resize],
 202                         [enable lru resize support]),
 203         [],[enable_lru_resize='yes'])
 204 AC_MSG_RESULT([$enable_lru_resize])
 205 if test x$enable_lru_resize != xno; then
 206    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
 207 fi
 208 ])
 209
 210 #
 211 # Quota support. The kernel must support CONFIG_QUOTA.
 212 #
 213 AC_DEFUN([LC_QUOTA_CONFIG],
 214 [LB_LINUX_CONFIG_IM([QUOTA],[],[
 215         AC_MSG_ERROR([Lustre quota requires that CONFIG_QUOTA is enabled in your kernel.])
 216         ])
 217 ])
 218
 219 # truncate_complete_page() has never been exported from an upstream kernel
 220 # remove_from_page_cache() was exported between 2.6.35 and 2.6.38
 221 # delete_from_page_cache() is exported from 2.6.39
 222 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE_PAGE],
 223          [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
 224                                  [mm/truncate.c],
 225                                  [AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
 226                                             [kernel export truncate_complete_page])])
 227           LB_CHECK_SYMBOL_EXPORT([remove_from_page_cache],
 228                                  [mm/filemap.c],
 229                                  [AC_DEFINE(HAVE_REMOVE_FROM_PAGE_CACHE, 1,
 230                                             [kernel export remove_from_page_cache])])
 231           LB_CHECK_SYMBOL_EXPORT([delete_from_page_cache],
 232                                  [mm/filemap.c],
 233                                  [AC_DEFINE(HAVE_DELETE_FROM_PAGE_CACHE, 1,
 234                                             [kernel export delete_from_page_cache])])
 235          ])
 236
 237 #
 238 # LC_CAPA_CRYPTO
 239 #
 240 AC_DEFUN([LC_CAPA_CRYPTO],
 241 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 242         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 243 ])
 244 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 245         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 246 ])
 247 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 248         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 249 ])
 250 ])
 251
 252 #
 253 # LC_CONFIG_RMTCLIENT
 254 #
 255 dnl FIXME
 256 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 257 dnl FIXME
 258 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 259 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 260         AC_MSG_WARN([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 261 ])
 262 ])
 263
 264 #
 265 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 266 #
 267 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 268 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 269  AC_ARG_ENABLE([gss_keyring],
 270                [AC_HELP_STRING([--disable-gss-keyring],
 271                                [disable gss keyring backend])],
 272                [],[enable_gss_keyring='yes'])
 273  AC_MSG_RESULT([$enable_gss_keyring])
 274
 275  if test x$enable_gss_keyring != xno; then
 276         LB_LINUX_CONFIG_IM([KEYS],[],
 277                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 278
 279         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 280                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 281
 282         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 283                   [Define this if you enable gss keyring backend])
 284  fi
 285 ])
 286
 287 AC_DEFUN([LC_CONFIG_SUNRPC],
 288 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 289                     [if test x$sunrpc_required == xyes; then
 290                          AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])
 291                      fi])
 292 ])
 293
 294 #
 295 # LC_CONFIG_GSS (default disabled)
 296 #
 297 # Build gss and related tools of Lustre. Currently both kernel and user space
 298 # parts are depend on linux platform.
 299 #
 300 AC_DEFUN([LC_CONFIG_GSS],
 301 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 302  AC_ARG_ENABLE([gss],
 303                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 304                [],[enable_gss='auto'])
 305  AC_MSG_RESULT([$enable_gss])
 306
 307  if test x$enable_gss != xno; then
 308         LC_CONFIG_GSS_KEYRING
 309         sunrpc_required=$enable_gss
 310         LC_CONFIG_SUNRPC
 311         sunrpc_required=no
 312
 313         AC_DEFINE([HAVE_GSS], [1], [Define this if you enable gss])
 314
 315         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 316                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 317         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 318                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 319         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 320                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 321         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 322                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 323
 324         require_krb5=$enable_gss
 325         AC_KERBEROS_V5
 326         require_krb5=no
 327
 328         if test x$KRBDIR != x; then
 329             AC_CHECK_LIB([gssapi], [gss_export_lucid_sec_context],
 330                          [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 331                          [AC_CHECK_LIB([gssglue], [gss_export_lucid_sec_context],
 332                                        [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 333                                        [if test x$enable_gss == xyes; then
 334                                             AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])
 335                                         fi])],)
 336             AC_SUBST(GSSAPI_LIBS)
 337         fi
 338  fi
 339 ])
 340
 341 #2.6.18 + RHEL5 (fc6)
 342
 343 # raid5-zerocopy patch
 344
 345 #
 346 # LC_PAGE_CONSTANT
 347 #
 348 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
 349 # it support constant page, which means the page won't be modified during the
 350 # IO.
 351 #
 352 AC_DEFUN([LC_PAGE_CONSTANT],
 353 [AC_MSG_CHECKING([if kernel have PageConstant defined])
 354 LB_LINUX_TRY_COMPILE([
 355         #include <linux/mm.h>
 356         #include <linux/page-flags.h>
 357 ],[
 358         #ifndef PG_constant
 359         #error "Have no raid5 zcopy patch"
 360         #endif
 361 ],[
 362         AC_MSG_RESULT(yes)
 363         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
 364 ],[
 365         AC_MSG_RESULT(no);
 366 ])
 367 ])
 368
 369 # 2.6.24
 370
 371 # 2.6.24 has bio_endio with 2 args
 372 AC_DEFUN([LC_BIO_ENDIO_2ARG],
 373 [AC_MSG_CHECKING([if kernel has bio_endio with 2 args])
 374 LB_LINUX_TRY_COMPILE([
 375         #include <linux/bio.h>
 376 ],[
 377         bio_endio(NULL, 0);
 378 ], [
 379         AC_MSG_RESULT([yes])
 380         AC_DEFINE(HAVE_BIO_ENDIO_2ARG, 1,
 381                 [kernel has bio_endio with 2 args])
 382 ],[
 383         AC_MSG_RESULT([no])
 384 ])
 385 ])
 386
 387 # 2.6.24 removes long aged procfs entry -> deleted member
 388 AC_DEFUN([LC_PROCFS_DELETED],
 389 [AC_MSG_CHECKING([if kernel has deleted member in procfs entry struct])
 390 LB_LINUX_TRY_COMPILE([
 391         #include <linux/proc_fs.h>
 392 ],[
 393         struct proc_dir_entry pde;
 394
 395         pde.deleted = sizeof(pde);
 396 ], [
 397         AC_MSG_RESULT([yes])
 398         AC_DEFINE(HAVE_PROCFS_DELETED, 1,
 399                 [kernel has deleted member in procfs entry struct])
 400 ],[
 401         AC_MSG_RESULT([no])
 402 ])
 403 ])
 404
 405 #
 406 # 2.6.27
 407 #
 408
 409 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 410 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 411 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 412 # v3.1 onward have a 2 arg version (inode, mask)
 413 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
 414 [AC_MSG_CHECKING([inode_operations->permission has two args])
 415 LB_LINUX_TRY_COMPILE([
 416         #include <linux/fs.h>
 417 ],[
 418         struct inode *inode __attribute__ ((unused));
 419
 420         inode = NULL;
 421         inode->i_op->permission(NULL, 0);
 422 ],[
 423         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 424                   [inode_operations->permission has two args])
 425         AC_MSG_RESULT([yes])
 426 ],[
 427         AC_MSG_RESULT([no])
 428 ])
 429 ])
 430
 431 # 2.6.27 use 5th parameter in quota_on for remount.
 432 AC_DEFUN([LC_QUOTA_ON_5ARGS],
 433 [AC_MSG_CHECKING([quota_on needs 5 parameters])
 434 LB_LINUX_TRY_COMPILE([
 435         #include <linux/fs.h>
 436         #include <linux/quota.h>
 437 ],[
 438         struct quotactl_ops *qop = NULL;
 439         qop->quota_on(NULL, 0, 0, NULL, 0);
 440 ],[
 441         AC_DEFINE(HAVE_QUOTA_ON_5ARGS, 1,
 442                 [quota_on needs 5 paramters])
 443         AC_MSG_RESULT([yes])
 444 ],[
 445         AC_MSG_RESULT([no])
 446 ])
 447 ])
 448
 449 # 2.6.27 use 3th parameter in quota_off for remount.
 450 AC_DEFUN([LC_QUOTA_OFF_3ARGS],
 451 [AC_MSG_CHECKING([quota_off needs 3 parameters])
 452 LB_LINUX_TRY_COMPILE([
 453         #include <linux/fs.h>
 454         #include <linux/quota.h>
 455 ],[
 456         struct quotactl_ops *qop = NULL;
 457         qop->quota_off(NULL, 0, 0);
 458 ],[
 459         AC_DEFINE(HAVE_QUOTA_OFF_3ARGS, 1,
 460                 [quota_off needs 3 paramters])
 461         AC_MSG_RESULT([yes])
 462 ],[
 463         AC_MSG_RESULT([no])
 464 ])
 465 ])
 466
 467 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 468 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA],
 469 tmp_flags="$EXTRA_KCFLAGS"
 470 EXTRA_KCFLAGS="-Werror"
 471 [AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct fs_disk_quota])
 472 LB_LINUX_TRY_COMPILE([
 473         #include <linux/fs.h>
 474         #include <linux/quota.h>
 475 ],[
 476         struct quotactl_ops qops = {};
 477         struct fs_disk_quota fdq;
 478         qops.set_dqblk(NULL, 0, 0, &fdq);
 479 ],[
 480         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1, [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 481         AC_MSG_RESULT([yes])
 482 ],[
 483         AC_MSG_RESULT([no])
 484 ])
 485 EXTRA_KCFLAGS="$tmp_flags"
 486 ])
 487
 488 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 489 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND],
 490 [AC_MSG_CHECKING([if dquot_suspend is defined])
 491 LB_LINUX_TRY_COMPILE([
 492         #include <linux/quotaops.h>
 493 ],[
 494         dquot_suspend(NULL, -1);
 495 ],[
 496         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 497         AC_MSG_RESULT([yes])
 498 ],[
 499         AC_MSG_RESULT([no])
 500 ])
 501 ])
 502
 503 # 2.6.27.15-2 sles11
 504
 505 # 2.6.27 sles11 remove the bi_hw_segments
 506 AC_DEFUN([LC_BI_HW_SEGMENTS],
 507 [AC_MSG_CHECKING([struct bio has a bi_hw_segments field])
 508 LB_LINUX_TRY_COMPILE([
 509         #include <linux/bio.h>
 510 ],[
 511         struct bio io;
 512         io.bi_hw_segments = sizeof(io);
 513 ],[
 514         AC_DEFINE(HAVE_BI_HW_SEGMENTS, 1,
 515                 [struct bio has a bi_hw_segments field])
 516         AC_MSG_RESULT([yes])
 517 ],[
 518         AC_MSG_RESULT([no])
 519 ])
 520 ])
 521
 522 #
 523 # 2.6.27 sles11 move the quotaio_v1{2}.h from include/linux to fs
 524 # 2.6.32 move the quotaio_v1{2}.h from fs to fs/quota
 525 AC_DEFUN([LC_HAVE_QUOTAIO_H],
 526 [LB_CHECK_FILE([$LINUX/include/linux/quotaio_v2.h],[
 527         AC_DEFINE(HAVE_QUOTAIO_H, 1,
 528                 [kernel has include/linux/quotaio_v2.h])
 529 ],[LB_CHECK_FILE([$LINUX/fs/quotaio_v2.h],[
 530                AC_DEFINE(HAVE_FS_QUOTAIO_H, 1,
 531                 [kernel has fs/quotaio_v1.h])
 532 ],[LB_CHECK_FILE([$LINUX/fs/quota/quotaio_v2.h],[
 533                AC_DEFINE(HAVE_FS_QUOTA_QUOTAIO_H, 1,
 534                 [kernel has fs/quota/quotaio_v2.h])
 535 ],[
 536         AC_MSG_RESULT([no])
 537 ])
 538 ])
 539 ])
 540 ])
 541
 542 # 2.6.32
 543
 544 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 545 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
 546 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
 547 LB_LINUX_TRY_COMPILE([
 548         #include <linux/blkdev.h>
 549 ],[
 550         blk_queue_max_segments(NULL, 0);
 551 ],[
 552         AC_MSG_RESULT(yes)
 553         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 554                   [blk_queue_max_segments is defined])
 555 ],[
 556         AC_MSG_RESULT(no)
 557 ])
 558 ])
 559
 560 #
 561 # LC_QUOTA64
 562 #
 563 # Check if kernel has been patched for 64-bit quota limits support.
 564 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 565 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 566 # that in the absence of quotaio_v1.h in the kernel headers.
 567 #
 568 AC_DEFUN([LC_QUOTA64],[
 569         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
 570 tmp_flags="$EXTRA_KCFLAGS"
 571 EXTRA_KCFLAGS="-I$LINUX/fs"
 572         LB_LINUX_TRY_COMPILE([
 573                 #include <linux/kernel.h>
 574                 #include <linux/fs.h>
 575                 #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 576                 # include <quota/quotaio_v2.h>
 577                 struct v2r1_disk_dqblk dqblk_r1;
 578                 #else
 579                 #include <linux/quota.h>
 580                 int ver = QFMT_VFS_V1;
 581                 #endif
 582         ],[],[
 583                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 584                 AC_MSG_RESULT([yes])
 585         ],[
 586                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 587                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
 588                 ],[])
 589                 AC_MSG_RESULT([no])
 590         ])
 591 EXTRA_KCFLAGS=$tmp_flags
 592 ])
 593
 594 #
 595 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 596 #
 597 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
 598 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
 599 LB_LINUX_TRY_COMPILE([
 600         #include <asm/atomic.h>
 601         #include <linux/spinlock.h>
 602         #include <linux/fs_struct.h>
 603 ],[
 604         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 605 ],[
 606         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
 607                   [fs_struct.lock use rwlock])
 608         AC_MSG_RESULT([yes])
 609 ],[
 610         AC_MSG_RESULT([no])
 611 ])
 612 ])
 613
 614 #
 615 # 2.6.36 super_operations add evict_inode method. it hybird of
 616 # delete_inode & clear_inode.
 617 #
 618 AC_DEFUN([LC_SBOPS_EVICT_INODE],
 619 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
 620 LB_LINUX_TRY_COMPILE([
 621         #include <linux/fs.h>
 622 ],[
 623         ((struct super_operations *)0)->evict_inode(NULL);
 624 ],[
 625         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 626                 [super_operations.evict_inode() is exist in kernel])
 627         AC_MSG_RESULT([yes])
 628 ],[
 629         AC_MSG_RESULT([no])
 630 ])
 631 ])
 632
 633 #
 634 # 2.6.35 file_operations.fsync taken 2 arguments.
 635 # 3.0.0 file_operations.fsync takes 4 arguments.
 636 #
 637 AC_DEFUN([LC_FILE_FSYNC],
 638 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
 639 LB_LINUX_TRY_COMPILE([
 640         #include <linux/fs.h>
 641 ],[
 642         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 643 ],[
 644         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 645                 [file_operations.fsync takes 4 arguments])
 646         AC_MSG_RESULT([yes, 4 args])
 647 ],[
 648         LB_LINUX_TRY_COMPILE([
 649                 #include <linux/fs.h>
 650         ],[
 651            ((struct file_operations *)0)->fsync(NULL, 0);
 652         ],[
 653                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 654                         [file_operations.fsync takes 2 arguments])
 655                 AC_MSG_RESULT([yes, 2 args])
 656         ],[
 657                 AC_MSG_RESULT([no])
 658         ])
 659 ])
 660 ])
 661
 662 #
 663 # 2.6.37 remove kernel_locked
 664 #
 665 AC_DEFUN([LC_KERNEL_LOCKED],
 666 [AC_MSG_CHECKING([if kernel_locked is defined])
 667 LB_LINUX_TRY_COMPILE([
 668         #include <linux/smp_lock.h>
 669 ],[
 670         kernel_locked();
 671 ],[
 672         AC_MSG_RESULT([yes])
 673         AC_DEFINE(HAVE_KERNEL_LOCKED, 1,
 674                 [kernel_locked is defined])
 675 ],[
 676         AC_MSG_RESULT([no])
 677 ])
 678 ])
 679
 680 #
 681 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 682 #
 683 AC_DEFUN([LC_D_COMPARE_7ARGS],
 684 [AC_MSG_CHECKING([if d_compare taken 7 arguments])
 685 LB_LINUX_TRY_COMPILE([
 686         #include <linux/dcache.h>
 687 ],[
 688         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 689 ],[
 690         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1,
 691                 [d_compare need 7 arguments])
 692         AC_MSG_RESULT([yes])
 693 ],[
 694         AC_MSG_RESULT([no])
 695 ])
 696 ])
 697
 698 #
 699 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 700 #
 701 AC_DEFUN([LC_D_DELETE_CONST],
 702 [AC_MSG_CHECKING([if d_delete has const declare on first parameter])
 703 tmp_flags="$EXTRA_KCFLAGS"
 704 EXTRA_KCFLAGS="-Werror"
 705 LB_LINUX_TRY_COMPILE([
 706         #include <linux/dcache.h>
 707 ],[
 708         const struct dentry *d = NULL;
 709         ((struct dentry_operations*)0)->d_delete(d);
 710 ],[
 711         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 712                 [d_delete first parameter declared const])
 713         AC_MSG_RESULT([yes])
 714 ],[
 715         AC_DEFINE(HAVE_D_DELETE_CONST, , [])
 716         AC_MSG_RESULT([no])
 717 ])
 718 EXTRA_KCFLAGS="$tmp_flags"
 719 ])
 720
 721 #
 722 # 2.6.38 dcache_lock removed. rcu-walk commited.
 723 #
 724 AC_DEFUN([LC_DCACHE_LOCK],
 725 [AC_MSG_CHECKING([if dcache_lock is exist])
 726 LB_LINUX_TRY_COMPILE([
 727         #include <linux/dcache.h>
 728 ],[
 729         spin_lock(&dcache_lock);
 730 ],[
 731         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 732                 [dcache_lock is exist])
 733         AC_MSG_RESULT([yes])
 734 ],[
 735         AC_MSG_RESULT([no])
 736 ])
 737 ])
 738
 739 #
 740 # 2.6.38 inode.i_rcu added.
 741 #
 742 AC_DEFUN([LC_INODE_I_RCU],
 743 [AC_MSG_CHECKING([if inode.i_rcu exists])
 744 LB_LINUX_TRY_COMPILE([
 745         #include <linux/fs.h>
 746 ],[
 747         struct inode ino;
 748         struct rcu_head rcu = {};
 749         ino.i_rcu = rcu;
 750 ],[
 751         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 752                 [inode.i_rcu exists])
 753         AC_MSG_RESULT([yes])
 754 ],[
 755         AC_MSG_RESULT([no])
 756 ])
 757 ])
 758
 759 #
 760 # 2.6.38 export blkdev_get_by_dev
 761 #
 762 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
 763 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
 764 [fs/block_dev.c],[
 765 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 766             [blkdev_get_by_dev is exported by the kernel])
 767 ],[
 768 ])
 769 ])
 770
 771 #
 772 # 2.6.38 use path as 4th parameter in quota_on.
 773 #
 774 AC_DEFUN([LC_QUOTA_ON_USE_PATH],
 775 [AC_MSG_CHECKING([quota_on use path as parameter])
 776 tmp_flags="$EXTRA_KCFLAGS"
 777 EXTRA_KCFLAGS="-Werror"
 778 LB_LINUX_TRY_COMPILE([
 779         #include <linux/fs.h>
 780         #include <linux/quota.h>
 781 ],[
 782         ((struct quotactl_ops *)0)->quota_on(NULL, 0, 0, ((struct path*)0));
 783 ],[
 784         AC_DEFINE(HAVE_QUOTA_ON_USE_PATH, 1,
 785                 [quota_on use path as 4th paramter])
 786         AC_MSG_RESULT([yes])
 787 ],[
 788         AC_MSG_RESULT([no])
 789 ])
 790 EXTRA_KCFLAGS="$tmp_flags"
 791 ])
 792
 793 #
 794 # 2.6.38 export simple_setattr
 795 #
 796 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
 797 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
 798 [fs/libfs.c],[
 799 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 800             [simple_setattr is exported by the kernel])
 801 ],[
 802 ])
 803 ])
 804
 805 #
 806 # 2.6.39 remove unplug_fn from request_queue.
 807 #
 808 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
 809 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
 810 LB_LINUX_TRY_COMPILE([
 811         #include <linux/blkdev.h>
 812 ],[
 813         do{ }while(sizeof(((struct request_queue *)0)->unplug_fn));
 814 ],[
 815         AC_DEFINE(HAVE_REQUEST_QUEUE_UNPLUG_FN, 1,
 816                   [request_queue has unplug_fn field])
 817         AC_MSG_RESULT([yes])
 818 ],[
 819         AC_MSG_RESULT([no])
 820 ])
 821 ])
 822
 823 #
 824 # 2.6.39 replace get_sb with mount in struct file_system_type
 825 #
 826 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT],
 827 [AC_MSG_CHECKING([if file_system_type has mount field])
 828 LB_LINUX_TRY_COMPILE([
 829         #include <linux/fs.h>
 830 ],[
 831         struct file_system_type fst;
 832         void *i = (void *) fst.mount;
 833 ],[
 834         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 835                 [struct file_system_type has mount field])
 836         AC_MSG_RESULT([yes])
 837 ],[
 838         AC_MSG_RESULT([no])
 839 ])
 840 ])
 841
 842 #
 843 # 3.0 dirty_inode() has a flag parameter
 844 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 845 #
 846 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG],
 847 [AC_MSG_CHECKING([if dirty_inode super_operation takes flag])
 848 LB_LINUX_TRY_COMPILE([
 849         #include <linux/fs.h>
 850 ],[
 851         struct inode *inode;
 852         inode->i_sb->s_op->dirty_inode(NULL, 0);
 853 ],[
 854         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 855                   [dirty_inode super_operation takes flag])
 856         AC_MSG_RESULT([yes])
 857 ],[
 858         AC_MSG_RESULT([no])
 859 ])
 860 ])
 861
 862 #
 863 # 2.6.38 generic_permission taken 4 parameters.
 864 # in fact, it means rcu-walk aware permission bring.
 865 #
 866 # 3.1 generic_permission taken 2 parameters.
 867 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 868 #
 869 AC_DEFUN([LC_GENERIC_PERMISSION],
 870 [AC_MSG_CHECKING([if generic_permission take 2 or 4 arguments])
 871 LB_LINUX_TRY_COMPILE([
 872         #include <linux/fs.h>
 873 ],[
 874         generic_permission(NULL, 0);
 875 ],[
 876         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 877                   [generic_permission taken 2 arguments])
 878         AC_MSG_RESULT([yes, 2 args])
 879 ],[
 880         LB_LINUX_TRY_COMPILE([
 881                 #include <linux/fs.h>
 882         ],[
 883                 generic_permission(NULL, 0, 0, NULL);
 884         ],[
 885                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 886                           [generic_permission taken 4 arguments])
 887                 AC_MSG_RESULT([yes, 4 args])
 888         ],[
 889                 AC_MSG_RESULT([no])
 890         ])
 891 ])
 892 ])
 893
 894 #
 895 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 896 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 897 #
 898 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS],
 899 [AC_MSG_CHECKING([if lock-manager ops renamed to lm_xxx])
 900 LB_LINUX_TRY_COMPILE([
 901         #include <linux/fs.h>
 902 ],[
 903         struct lock_manager_operations lm_ops;
 904         lm_ops.lm_compare_owner = NULL;
 905 ],[
 906         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 907                   [lock-manager ops renamed to lm_xxx])
 908         AC_MSG_RESULT([yes])
 909 ],[
 910         AC_MSG_RESULT([no])
 911 ])
 912 ])
 913
 914 #
 915 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait/
 916 #     inode_dio_done instead.
 917 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 918 #
 919 AC_DEFUN([LC_INODE_DIO_WAIT],
 920 [AC_MSG_CHECKING([if inode->i_alloc_sem is killed and use inode_dio_wait/done.])
 921 LB_LINUX_TRY_COMPILE([
 922         #include <linux/fs.h>
 923 ],[
 924         inode_dio_wait((struct inode *)0);
 925         inode_dio_done((struct inode *)0);
 926 ],[
 927         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 928                   [inode->i_alloc_sem is killed and use inode_dio_wait/done])
 929         AC_MSG_RESULT([yes])
 930 ],[
 931         AC_MSG_RESULT([no])
 932 ])
 933 ])
 934
 935 #
 936 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 937 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 938 #
 939 AC_DEFUN([LC_IOP_GET_ACL],
 940 [AC_MSG_CHECKING([inode_operations has .get_acl member function])
 941 LB_LINUX_TRY_COMPILE([
 942         #include <linux/fs.h>
 943 ],[
 944         struct inode_operations iop;
 945         iop.get_acl = NULL;
 946 ],[
 947         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 948                   [inode_operations has .get_acl member function])
 949         AC_MSG_RESULT([yes])
 950 ],[
 951         AC_MSG_RESULT([no])
 952 ])
 953 ])
 954
 955 #
 956 # 3.1.1 has ext4_blocks_for_truncate
 957 #
 958 AC_DEFUN([LC_BLOCKS_FOR_TRUNCATE],
 959 [AC_MSG_CHECKING([if kernel has ext4_blocks_for_truncate])
 960 LB_LINUX_TRY_COMPILE([
 961         #include <linux/fs.h>
 962         #include "$LINUX/fs/ext4/ext4_jbd2.h"
 963         #include "$LINUX/fs/ext4/truncate.h"
 964 ],[
 965         ext4_blocks_for_truncate(NULL);
 966 ],[
 967         AC_MSG_RESULT([yes])
 968         AC_DEFINE(HAVE_BLOCKS_FOR_TRUNCATE, 1,
 969                   [kernel has ext4_blocks_for_truncate])
 970 ],[
 971         AC_MSG_RESULT([no])
 972 ])
 973 ])
 974
 975 #
 976 # 3.1 introduced generic_file_llseek_size()
 977 #
 978 AC_DEFUN([LC_FILE_LLSEEK_SIZE],
 979         [LB_CHECK_SYMBOL_EXPORT([generic_file_llseek_size],
 980         [fs/read_write.c],
 981         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 982                    [generic_file_llseek_size is exported by the kernel])])
 983 ])
 984
 985 #
 986 # 3.2 request_queue.make_request_fn defined as function returns with void
 987 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
 988 #
 989 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN],
 990 [AC_MSG_CHECKING([if request_queue.make_request_fn returns void but not int])
 991 LB_LINUX_TRY_COMPILE([
 992         #include <linux/blkdev.h>
 993 ],[
 994         int ret;
 995         make_request_fn         *mrf;
 996         ret = mrf(NULL, NULL);
 997 ],[
 998         AC_MSG_RESULT([no])
 999 ],[
1000         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
1001                   [request_queue.make_request_fn returns void but not int])
1002         AC_MSG_RESULT([yes])
1003 ])
1004 ])
1005
1006 #
1007 # 3.2 protects inode->i_nlink from direct modification
1008 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
1009 # at the same time adds set_nlink(), so checks set_nlink() for it.
1010 #
1011 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK],
1012 [AC_MSG_CHECKING([if inode->i_nlink is protected from direct modification])
1013 LB_LINUX_TRY_COMPILE([
1014         #include <linux/fs.h>
1015 ],[
1016         struct inode i;
1017         set_nlink(&i, 1);
1018 ],[
1019         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
1020                   [inode->i_nlink is protected from direct modification])
1021         AC_MSG_RESULT([yes])
1022 ],[
1023         AC_MSG_RESULT([no])
1024 ])
1025 ])
1026
1027 #
1028 # 3.3 introduces migrate_mode.h and migratepage has 4 args
1029 #
1030 AC_DEFUN([LC_HAVE_MIGRATE_HEADER],
1031 [LB_CHECK_FILE([$LINUX/include/linux/migrate.h],[
1032                 AC_DEFINE(HAVE_MIGRATE_H, 1,
1033                 [kernel has include/linux/migrate.h])
1034 ],[LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h],[
1035                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
1036                         [kernel has include/linux/migrate_mode.h])
1037 ],[
1038         AC_MSG_RESULT([no])
1039 ])
1040 ])
1041 ])
1042
1043 AC_DEFUN([LC_MIGRATEPAGE_4ARGS],
1044 [AC_MSG_CHECKING([if address_space_operations.migratepage has 4 args])
1045 LB_LINUX_TRY_COMPILE([
1046         #include <linux/fs.h>
1047 #ifdef HAVE_MIGRATE_H
1048         #include <linux/migrate.h>
1049 #elif defined(HAVE_MIGRATE_MODE_H)
1050         #include <linux/migrate_mode.h>
1051 #endif
1052 ],[
1053         struct address_space_operations aops;
1054
1055         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
1056 ],[
1057         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
1058                 [address_space_operations.migratepage has 4 args])
1059         AC_MSG_RESULT([yes])
1060 ],[
1061         AC_MSG_RESULT([no])
1062 ])
1063 ])
1064
1065 #
1066 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
1067 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
1068 #
1069 AC_DEFUN([LC_SUPEROPS_USE_DENTRY],
1070 [AC_MSG_CHECKING([if super_operations use dentry as parameter])
1071 tmp_flags="$EXTRA_KCFLAGS"
1072 EXTRA_KCFLAGS="-Werror"
1073 LB_LINUX_TRY_COMPILE([
1074         #include <linux/fs.h>
1075         int show_options(struct seq_file *seq, struct dentry *root){
1076                 return 0;
1077         }
1078 ],[
1079         struct super_operations ops;
1080         ops.show_options = show_options;
1081 ],[
1082         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
1083                   [super_operations use dentry as parameter])
1084         AC_MSG_RESULT([yes])
1085 ],[
1086         AC_MSG_RESULT([no])
1087 ])
1088 EXTRA_KCFLAGS="$tmp_flags"
1089 ])
1090
1091 #
1092 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
1093 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
1094 #
1095 AC_DEFUN([LC_INODEOPS_USE_UMODE_T],
1096 [AC_MSG_CHECKING([if inode_operations use umode_t as parameter])
1097 tmp_flags="$EXTRA_KCFLAGS"
1098 EXTRA_KCFLAGS="-Werror"
1099 LB_LINUX_TRY_COMPILE([
1100         #include <linux/fs.h>
1101         #include <linux/types.h>
1102         int my_mknod(struct inode *dir, struct dentry *dchild,
1103                      umode_t mode, dev_t dev)
1104         {
1105                 return 0;
1106         }
1107 ],[
1108         struct inode_operations ops;
1109         ops.mknod = my_mknod;
1110 ],[
1111         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
1112                   [inode_operations use umode_t as parameter])
1113         AC_MSG_RESULT([yes])
1114 ],[
1115         AC_MSG_RESULT([no])
1116 ])
1117 EXTRA_KCFLAGS="$tmp_flags"
1118 ])
1119
1120 # 3.4 kmap_atomic removes second argument
1121 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
1122 #
1123 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG],
1124 [AC_MSG_CHECKING([if kmap_atomic has only 1 argument])
1125 LB_LINUX_TRY_COMPILE([
1126         #include <linux/highmem.h>
1127 ],[
1128         kmap_atomic(NULL);
1129 ],[
1130         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
1131                   [have kmap_atomic has only 1 argument])
1132         AC_MSG_RESULT([yes])
1133 ],[
1134         AC_MSG_RESULT([no])
1135 ])
1136 ])
1137
1138 #
1139 # 3.4 switchs touch_atime to struct path
1140 # see kernel commit 68ac1234fb949b66941d94dce4157742799fc581
1141 #
1142 AC_DEFUN([LC_TOUCH_ATIME_1ARG],
1143 [AC_MSG_CHECKING([if touch_atime use one argument])
1144 LB_LINUX_TRY_COMPILE([
1145         #include <linux/fs.h>
1146 ],[
1147         touch_atime((struct path *)NULL);
1148 ],[
1149         AC_DEFINE(HAVE_TOUCH_ATIME_1ARG, 1,
1150                   [touch_atime use one argument])
1151         AC_MSG_RESULT([yes])
1152 ],[
1153         AC_MSG_RESULT([no])
1154 ])
1155 ])
1156
1157 #
1158 # 3.4 converts d_alloc_root to d_make_root
1159 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1160 #
1161 AC_DEFUN([LC_HAVE_D_MAKE_ROOT],
1162 [AC_MSG_CHECKING([if have d_make_root])
1163 LB_LINUX_TRY_COMPILE([
1164         #include <linux/fs.h>
1165 ],[
1166         d_make_root((struct inode *)NULL);
1167 ],[
1168         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1169                   [have d_make_root])
1170         AC_MSG_RESULT([yes])
1171 ],[
1172         AC_MSG_RESULT([no])
1173 ])
1174 ])
1175
1176 #
1177 # 3.5 renames end_writeback() back to clear_inode()...
1178 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1179 #
1180 AC_DEFUN([LC_HAVE_CLEAR_INODE],
1181 [AC_MSG_CHECKING([if have clear_inode])
1182 LB_LINUX_TRY_COMPILE([
1183         #include <linux/fs.h>
1184 ],[
1185         clear_inode((struct inode *)NULL);
1186 ],[
1187         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1188                   [have clear_inode])
1189         AC_MSG_RESULT([yes])
1190 ],[
1191         AC_MSG_RESULT([no])
1192 ])
1193 ])
1194
1195 #
1196 # 3.5 encode_fh has parent inode passed in directly
1197 # see kernel commit b0b0382b
1198 #
1199 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT],
1200 [AC_MSG_CHECKING([if encode_fh have parent inode as parameter])
1201 tmp_flags="$EXTRA_KCFLAGS"
1202 EXTRA_KCFLAGS="-Werror"
1203 LB_LINUX_TRY_COMPILE([
1204         #include <linux/exportfs.h>
1205         #include <linux/fs.h>
1206         #include <linux/types.h>
1207         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1208         {
1209                 return 0;
1210         }
1211 ],[
1212         struct export_operations exp_op;
1213         exp_op.encode_fh = ll_encode_fh;
1214 ],[
1215         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1216                   [have parent inode as parameter])
1217         AC_MSG_RESULT([yes])
1218 ],[
1219         AC_MSG_RESULT([no])
1220 ])
1221 EXTRA_KCFLAGS="$tmp_flags"
1222 ])
1223
1224 # 3.5 has generic_file_llseek_size with 5 args
1225 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG],
1226 [AC_MSG_CHECKING([if kernel has generic_file_llseek_size with 5 args])
1227 LB_LINUX_TRY_COMPILE([
1228         #include <linux/fs.h>
1229 ],[
1230         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1231 ], [
1232         AC_MSG_RESULT([yes])
1233         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1234                 [kernel has generic_file_llseek_size with 5 args])
1235 ],[
1236         AC_MSG_RESULT([no])
1237 ])
1238 ])
1239
1240 #
1241 # 3.6 switch i_dentry/d_alias from list to hlist
1242 #
1243 AC_DEFUN([LC_HAVE_DENTRY_D_ALIAS_HLIST],
1244 [AC_MSG_CHECKING([if i_dentry/d_alias uses hlist])
1245 tmp_flags="$EXTRA_KCFLAGS"
1246 EXTRA_KCFLAGS="-Werror"
1247 LB_LINUX_TRY_COMPILE([
1248         #include <linux/fs.h>
1249         #include <linux/list.h>
1250 ],[
1251         struct inode inode;
1252         struct dentry dentry;
1253         struct hlist_head head;
1254         struct hlist_node node;
1255         inode.i_dentry = head;
1256         dentry.d_alias = node;
1257 ],[
1258         AC_DEFINE(HAVE_DENTRY_D_ALIAS_HLIST, 1,
1259                   [have i_dentry/d_alias uses hlist])
1260         AC_MSG_RESULT([yes])
1261 ],[
1262         AC_MSG_RESULT([no])
1263 ])
1264 EXTRA_KCFLAGS="$tmp_flags"
1265 ])
1266
1267 #
1268 # 3.6 dentry_open uses struct path as first argument
1269 # see kernel commit 765927b2
1270 #
1271 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH],
1272 [AC_MSG_CHECKING([if dentry_open uses struct path as first argument])
1273 tmp_flags="$EXTRA_KCFLAGS"
1274 EXTRA_KCFLAGS="-Werror"
1275 LB_LINUX_TRY_COMPILE([
1276         #include <linux/fs.h>
1277         #include <linux/path.h>
1278 ],[
1279         struct path path;
1280         dentry_open(&path, 0, NULL);
1281 ],[
1282         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1283                   [dentry_open uses struct path as first argument])
1284         AC_MSG_RESULT([yes])
1285 ],[
1286         AC_MSG_RESULT([no])
1287 ])
1288 EXTRA_KCFLAGS="$tmp_flags"
1289 ])
1290
1291 #
1292 # 3.6 vfs adds iop->atomic_open
1293 #
1294 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN],
1295 [AC_MSG_CHECKING([if iop has atomic_open])
1296 LB_LINUX_TRY_COMPILE([
1297         #include <linux/fs.h>
1298 ],[
1299         struct inode_operations iop;
1300         iop.atomic_open = NULL;
1301 ],[
1302         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1303                   [have iop atomic_open])
1304         AC_MSG_RESULT([yes])
1305 ],[
1306         AC_MSG_RESULT([no])
1307 ])
1308 ])
1309
1310 #
1311 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1312 #
1313 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS],
1314 [AC_MSG_CHECKING([if posix_acl_to_xattr takes struct user_namespace])
1315 LB_LINUX_TRY_COMPILE([
1316         #include <linux/fs.h>
1317         #include <linux/posix_acl_xattr.h>
1318 ],[
1319         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1320 ],[
1321         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1322                   [posix_acl_to_xattr takes struct user_namespace])
1323         AC_MSG_RESULT([yes])
1324 ],[
1325         AC_MSG_RESULT([no])
1326 ])
1327 ])
1328
1329 #
1330 # 3.9 uses hlist_for_each_entry with 3 args
1331 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1332 #
1333 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG],
1334 [AC_MSG_CHECKING([if hlist_for_each_entry has 3 args])
1335 LB_LINUX_TRY_COMPILE([
1336         #include <linux/list.h>
1337         #include <linux/fs.h>
1338 ],[
1339         struct inode *inode;
1340         struct dentry *dentry;
1341         hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
1342                 continue;
1343         }
1344 ],[
1345         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1, [3 args])
1346         AC_MSG_RESULT([yes])
1347 ],[
1348         AC_MSG_RESULT([no])
1349 ])
1350 ])
1351
1352 #
1353 # 3.9 killed f_vfsmnt by
1354 # 182be684784334598eee1d90274e7f7aa0063616
1355 # replacement is f_path.mnt
1356 #
1357 AC_DEFUN([LC_HAVE_F_PATH_MNT],
1358 [AC_MSG_CHECKING([if struct file has f_path.mnt])
1359 LB_LINUX_TRY_COMPILE([
1360         #include <linux/fs.h>
1361 ],[
1362         struct file *fp = NULL;
1363         struct path  path;
1364
1365         path.mnt = fp->f_path.mnt;
1366 ],[
1367         AC_DEFINE(HAVE_F_PATH_MNT,1,[yes])
1368         AC_MSG_RESULT([yes])
1369 ],[
1370         AC_MSG_RESULT([no])
1371 ])
1372 ])
1373
1374 #
1375 # LC_PROG_LINUX
1376 #
1377 # Lustre linux kernel checks
1378 #
1379 AC_DEFUN([LC_PROG_LINUX],
1380          [
1381          LC_CONFIG_PINGER
1382          LC_CONFIG_CHECKSUM
1383          LC_CONFIG_LIBLUSTRE_RECOVERY
1384          LC_CONFIG_HEALTH_CHECK_WRITE
1385          LC_CONFIG_LRU_RESIZE
1386          LC_LLITE_LLOOP_MODULE
1387
1388          LC_CAPA_CRYPTO
1389          LC_CONFIG_RMTCLIENT
1390          LC_CONFIG_GSS
1391
1392          # raid5-zerocopy patch
1393          LC_PAGE_CONSTANT
1394
1395          # 2.6.24
1396          LC_BIO_ENDIO_2ARG
1397          LC_PROCFS_DELETED
1398
1399          # 2.6.27
1400          LC_QUOTA_ON_5ARGS
1401          LC_QUOTA_OFF_3ARGS
1402
1403          # 2.6.27.15-2 sles11
1404          LC_BI_HW_SEGMENTS
1405          LC_HAVE_QUOTAIO_H
1406
1407          # 2.6.32
1408          LC_BLK_QUEUE_MAX_SEGMENTS
1409
1410          # 2.6.34
1411          LC_HAVE_DQUOT_FS_DISK_QUOTA
1412          LC_HAVE_DQUOT_SUSPEND
1413
1414          # 2.6.35, 3.0.0
1415          LC_FILE_FSYNC
1416          LC_EXPORT_SIMPLE_SETATTR
1417          LC_EXPORT_TRUNCATE_COMPLETE_PAGE
1418
1419          # 2.6.36
1420          LC_FS_STRUCT_RWLOCK
1421          LC_SBOPS_EVICT_INODE
1422
1423          # 2.6.37
1424          LC_KERNEL_LOCKED
1425
1426          # 2.6.38
1427          LC_BLKDEV_GET_BY_DEV
1428          LC_GENERIC_PERMISSION
1429          LC_QUOTA_ON_USE_PATH
1430          LC_DCACHE_LOCK
1431          LC_INODE_I_RCU
1432          LC_D_COMPARE_7ARGS
1433          LC_D_DELETE_CONST
1434
1435          # 2.6.39
1436          LC_REQUEST_QUEUE_UNPLUG_FN
1437          LC_HAVE_FSTYPE_MOUNT
1438
1439          # 3.0
1440          LC_DIRTY_INODE_WITH_FLAG
1441
1442          # 3.1
1443          LC_LM_XXX_LOCK_MANAGER_OPS
1444          LC_INODE_DIO_WAIT
1445          LC_IOP_GET_ACL
1446          LC_FILE_LLSEEK_SIZE
1447          LC_INODE_PERMISION_2ARGS
1448
1449          # 3.1.1
1450          LC_BLOCKS_FOR_TRUNCATE
1451
1452          # 3.2
1453          LC_HAVE_VOID_MAKE_REQUEST_FN
1454          LC_HAVE_PROTECT_I_NLINK
1455
1456          # 3.3
1457          LC_HAVE_MIGRATE_HEADER
1458          LC_MIGRATEPAGE_4ARGS
1459          LC_SUPEROPS_USE_DENTRY
1460          LC_INODEOPS_USE_UMODE_T
1461
1462          # 3.4
1463          LC_TOUCH_ATIME_1ARG
1464          LC_HAVE_D_MAKE_ROOT
1465          LC_KMAP_ATOMIC_HAS_1ARG
1466
1467          # 3.5
1468          LC_HAVE_CLEAR_INODE
1469          LC_HAVE_ENCODE_FH_PARENT
1470          LC_FILE_LLSEEK_SIZE_5ARG
1471
1472          # 3.6
1473          LC_HAVE_DENTRY_D_ALIAS_HLIST
1474          LC_DENTRY_OPEN_USE_PATH
1475          LC_HAVE_IOP_ATOMIC_OPEN
1476
1477          # 3.7
1478          LC_HAVE_POSIXACL_USER_NS
1479
1480          # 3.9
1481          LC_HAVE_HLIST_FOR_EACH_3ARG
1482          LC_HAVE_F_PATH_MNT
1483
1484          #
1485          if test x$enable_server != xno ; then
1486                 LC_FUNC_DEV_SET_RDONLY
1487                 LC_STACK_SIZE
1488                 LC_QUOTA64
1489                 LC_QUOTA_CONFIG
1490          fi
1491 ])
1492
1493 #
1494 # LC_CONFIG_CLIENT
1495 #
1496 # Check whether to build the client side of Lustre
1497 #
1498 AC_DEFUN([LC_CONFIG_CLIENT],
1499 [AC_MSG_CHECKING([whether to build Lustre client support])
1500 AC_ARG_ENABLE([client],
1501         AC_HELP_STRING([--disable-client],
1502                         [disable Lustre client support]),
1503         [],[enable_client='yes'])
1504 AC_MSG_RESULT([$enable_client])
1505 ])
1506
1507 #
1508 # LC_CONFIG_LIBLUSTRE
1509 #
1510 # whether to build liblustre
1511 #
1512 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1513 [AC_MSG_CHECKING([whether to build Lustre library])
1514 AC_ARG_ENABLE([liblustre],
1515         AC_HELP_STRING([--disable-liblustre],
1516                         [disable building of Lustre library]),
1517         [],[enable_liblustre=$with_sysio])
1518 AC_MSG_RESULT([$enable_liblustre])
1519 # only build sysio if liblustre is built
1520 with_sysio="$enable_liblustre"
1521
1522 AC_MSG_CHECKING([whether to build liblustre tests])
1523 AC_ARG_ENABLE([liblustre-tests],
1524         AC_HELP_STRING([--enable-liblustre-tests],
1525                         [enable liblustre tests, if --disable-tests is used]),
1526         [],[enable_liblustre_tests=$enable_tests])
1527 if test x$enable_liblustre != xyes ; then
1528    enable_liblustre_tests='no'
1529 fi
1530 AC_MSG_RESULT([$enable_liblustre_tests])
1531
1532 AC_MSG_CHECKING([whether to enable liblustre acl])
1533 AC_ARG_ENABLE([liblustre-acl],
1534         AC_HELP_STRING([--disable-liblustre-acl],
1535                         [disable ACL support for liblustre]),
1536         [],[enable_liblustre_acl=yes])
1537 AC_MSG_RESULT([$enable_liblustre_acl])
1538 if test x$enable_liblustre_acl = xyes ; then
1539   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1540 fi
1541
1542 #
1543 # --enable-mpitest
1544 #
1545 AC_ARG_ENABLE(mpitests,
1546         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
1547                            [include mpi tests]),
1548         [
1549          enable_mpitests=yes
1550          case $enableval in
1551          yes)
1552                 MPICC_WRAPPER=mpicc
1553                 ;;
1554          no)
1555                 enable_mpitests=no
1556                 ;;
1557          *)
1558                 MPICC_WRAPPER=$enableval
1559                  ;;
1560          esac
1561         ],
1562         [
1563         MPICC_WRAPPER=mpicc
1564         enable_mpitests=yes
1565         ]
1566 )
1567
1568 if test x$enable_mpitests != xno; then
1569         AC_MSG_CHECKING([whether mpitests can be built])
1570         oldcc=$CC
1571         CC=$MPICC_WRAPPER
1572         AC_LINK_IFELSE(
1573             [AC_LANG_PROGRAM([[
1574                     #include <mpi.h>
1575                 ]],[[
1576                     int flag;
1577                     MPI_Initialized(&flag);
1578                 ]])],
1579             [
1580                     AC_MSG_RESULT([yes])
1581             ],[
1582                     AC_MSG_RESULT([no])
1583                     enable_mpitests=no
1584         ])
1585         CC=$oldcc
1586 fi
1587 AC_SUBST(MPICC_WRAPPER)
1588
1589 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1590 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1591
1592 LC_CONFIG_PINGER
1593 LC_CONFIG_LIBLUSTRE_RECOVERY
1594 ])
1595
1596 #
1597 # LC_CONFIG_QUOTA
1598 #
1599 # whether to enable quota support global control
1600 #
1601 AC_DEFUN([LC_CONFIG_QUOTA],
1602 [AC_ARG_ENABLE([quota],
1603         AC_HELP_STRING([--enable-quota],
1604                         [enable quota support]),
1605         [],[enable_quota='yes'])
1606 ])
1607
1608 AC_DEFUN([LC_QUOTA],
1609 [#check global
1610 LC_CONFIG_QUOTA
1611 #check for utils
1612 if test x$enable_quota != xno -a x$enable_utils != xno; then
1613 AC_CHECK_HEADER(sys/quota.h,
1614                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1615                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1616 fi
1617 ])
1618
1619 #
1620 # LC_CONFIG_SPLIT
1621 #
1622 # whether to enable split support
1623 #
1624 AC_DEFUN([LC_CONFIG_SPLIT],
1625 [AC_MSG_CHECKING([whether to enable split support])
1626 AC_ARG_ENABLE([split],
1627         AC_HELP_STRING([--enable-split],
1628                         [enable split support]),
1629         [],[enable_split='no'])
1630 AC_MSG_RESULT([$enable_split])
1631 if test x$enable_split != xno; then
1632    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1633 fi
1634 ])
1635
1636 #
1637 # LC_LLITE_LLOOP_MODULE
1638 # lloop_llite.ko does not currently work with page sizes
1639 # of 64k or larger.
1640 #
1641 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
1642 [AC_MSG_CHECKING([whether to enable llite_lloop module])
1643 LB_LINUX_TRY_COMPILE([
1644         #include <asm/page.h>
1645 ],[
1646         #if PAGE_SIZE >= 65536
1647         #error "PAGE_SIZE >= 65536"
1648         #endif
1649 ],[
1650         enable_llite_lloop_module='yes'
1651         AC_MSG_RESULT([yes])
1652 ],[
1653         enable_llite_lloop_module='no'
1654         AC_MSG_RESULT([no])
1655 ])
1656 ])
1657
1658 #
1659 # LC_OSD_ADDON
1660 #
1661 # configure support for optional OSD implementation
1662 #
1663 AC_DEFUN([LC_OSD_ADDON],
1664 [AC_MSG_CHECKING([for osd])
1665 AC_ARG_WITH([osd],
1666         AC_HELP_STRING([--with-osd=path],
1667                        [set path to optional osd]),
1668         [
1669                 case $with_osd in
1670                         no)     ENABLEOSDADDON=0
1671                                 ;;
1672                         *)      OSDADDON="${with_osd}"
1673                                 ENABLEOSDADDON=1
1674                                 ;;
1675                 esac
1676         ], [
1677                 ENABLEOSDADDON=0
1678         ])
1679 if test $ENABLEOSDADDON -eq 0; then
1680         AC_MSG_RESULT([no])
1681         OSDADDON=
1682 else
1683         OSDMODNAME=`basename $OSDADDON`
1684         if test -e $LUSTRE/$OSDMODNAME; then
1685                 AC_MSG_RESULT([can't link])
1686                 OSDADDON=
1687         elif ln -s $OSDADDON $LUSTRE/$OSDMODNAME; then
1688                 AC_MSG_RESULT([$OSDMODNAME])
1689                 OSDADDON="subdir-m += $OSDMODNAME"
1690         else
1691                 AC_MSG_RESULT([can't link])
1692                 OSDADDON=
1693         fi
1694 fi
1695 AC_SUBST(OSDADDON)
1696 ])
1697
1698 #
1699 # LC_CONFIGURE
1700 #
1701 # other configure checks
1702 #
1703 AC_DEFUN([LC_CONFIGURE],
1704 [LC_CONFIG_OBD_BUFFER_SIZE
1705
1706 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1707         CFLAGS="$CFLAGS -Werror"
1708 fi
1709
1710 # maximum MDS thread count
1711 LC_MDS_MAX_THREADS
1712
1713 # include/liblustre.h
1714 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1715
1716 # liblustre/llite_lib.h
1717 AC_CHECK_HEADERS([xtio.h file.h])
1718
1719 # liblustre/dir.c
1720 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1721
1722 # liblustre/lutil.c
1723 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1724 AC_CHECK_FUNCS([inet_ntoa])
1725
1726 # libsysio/src/readlink.c
1727 LC_READLINK_SSIZE_T
1728
1729 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
1730 AC_CHECK_HEADERS([linux/random.h], [], [],
1731                  [#ifdef HAVE_LINUX_TYPES_H
1732                   # include <linux/types.h>
1733                   #endif
1734                  ])
1735
1736 # utils/llverfs.c
1737 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1738
1739 # check for -lz support
1740 ZLIB=""
1741 AC_CHECK_LIB([z],
1742              [adler32],
1743              [AC_CHECK_HEADERS([zlib.h],
1744                                [ZLIB="-lz"
1745                                 AC_DEFINE([HAVE_ADLER], 1,
1746                                           [support alder32 checksum type])],
1747                                [AC_MSG_WARN([No zlib-devel package found,
1748                                              unable to use adler32 checksum])])],
1749              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1750 )
1751 AC_SUBST(ZLIB)
1752
1753 SELINUX=""
1754 AC_CHECK_LIB([selinux],
1755                 [is_selinux_enabled],
1756                 [AC_CHECK_HEADERS([selinux.h],
1757                                 [SELINUX="-lselinux"
1758                                 AC_DEFINE([HAVE_SELINUX], 1,
1759                                                 [support for selinux ])],
1760                                 [AC_MSG_WARN([No selinux-devel package found,
1761                                                 unable to build selinux enabled
1762                                                 tools])])],
1763                 [AC_MSG_WARN([No selinux package found, unable to build selinux
1764                                 enabled tools])]
1765 )
1766 AC_SUBST(SELINUX)
1767
1768 # Super safe df
1769 AC_ARG_ENABLE([mindf],
1770       AC_HELP_STRING([--enable-mindf],
1771                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1772       [],[])
1773 if test "$enable_mindf" = "yes" ;  then
1774       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1775 fi
1776
1777 AC_ARG_ENABLE([fail_alloc],
1778         AC_HELP_STRING([--disable-fail-alloc],
1779                 [disable randomly alloc failure]),
1780         [],[enable_fail_alloc=yes])
1781 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1782 AC_MSG_RESULT([$enable_fail_alloc])
1783 if test x$enable_fail_alloc != xno ; then
1784         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1785 fi
1786
1787 AC_ARG_ENABLE([invariants],
1788         AC_HELP_STRING([--enable-invariants],
1789                 [enable invariant checking (cpu intensive)]),
1790         [],[])
1791 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1792 AC_MSG_RESULT([$enable_invariants])
1793 if test x$enable_invariants = xyes ; then
1794         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1, [enable invariant checking])
1795 fi
1796
1797 AC_ARG_ENABLE([lu_ref],
1798         AC_HELP_STRING([--enable-lu_ref],
1799                 [enable lu_ref reference tracking code]),
1800         [],[])
1801 AC_MSG_CHECKING([whether to track references with lu_ref])
1802 AC_MSG_RESULT([$enable_lu_ref])
1803 if test x$enable_lu_ref = xyes ; then
1804         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
1805 fi
1806
1807 AC_ARG_ENABLE([pgstate-track],
1808               AC_HELP_STRING([--enable-pgstate-track],
1809                              [enable page state tracking]),
1810               [enable_pgstat_track='yes'],[])
1811 AC_MSG_CHECKING([whether to enable page state tracking])
1812 AC_MSG_RESULT([$enable_pgstat_track])
1813 if test x$enable_pgstat_track = xyes ; then
1814         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
1815                   [enable page state tracking code])
1816 fi
1817 ])
1818
1819 #
1820 # LC_CONDITIONALS
1821 #
1822 # AM_CONDITIONALS for lustre
1823 #
1824 AC_DEFUN([LC_CONDITIONALS],
1825 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1826 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1827 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1828 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1829 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1830 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1831 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1832 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1833 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1834 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1835 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1836 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1837 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
1838 ])
1839
1840 #
1841 # LC_CONFIG_FILES
1842 #
1843 # files that should be generated with AC_OUTPUT
1844 #
1845 AC_DEFUN([LC_CONFIG_FILES],
1846 [AC_CONFIG_FILES([
1847 lustre/Makefile
1848 lustre/autoMakefile
1849 lustre/autoconf/Makefile
1850 lustre/conf/Makefile
1851 lustre/contrib/Makefile
1852 lustre/doc/Makefile
1853 lustre/include/Makefile
1854 lustre/include/lustre_ver.h
1855 lustre/include/linux/Makefile
1856 lustre/include/darwin/Makefile
1857 lustre/include/lustre/Makefile
1858 lustre/kernel_patches/targets/2.6-rhel6.target
1859 lustre/kernel_patches/targets/2.6-rhel5.target
1860 lustre/kernel_patches/targets/2.6-sles11.target
1861 lustre/kernel_patches/targets/3.0-sles11.target
1862 lustre/kernel_patches/targets/2.6-fc11.target
1863 lustre/kernel_patches/targets/2.6-fc12.target
1864 lustre/kernel_patches/targets/2.6-fc15.target
1865 lustre/kernel_patches/targets/3.x-fc18.target
1866 lustre/ldlm/Makefile
1867 lustre/fid/Makefile
1868 lustre/fid/autoMakefile
1869 lustre/liblustre/Makefile
1870 lustre/liblustre/tests/Makefile
1871 lustre/liblustre/tests/mpi/Makefile
1872 lustre/llite/Makefile
1873 lustre/llite/autoMakefile
1874 lustre/lclient/Makefile
1875 lustre/lov/Makefile
1876 lustre/lov/autoMakefile
1877 lustre/lvfs/Makefile
1878 lustre/lvfs/autoMakefile
1879 lustre/mdc/Makefile
1880 lustre/mdc/autoMakefile
1881 lustre/lmv/Makefile
1882 lustre/lmv/autoMakefile
1883 lustre/lfsck/Makefile
1884 lustre/lfsck/autoMakefile
1885 lustre/mdt/Makefile
1886 lustre/mdt/autoMakefile
1887 lustre/mdd/Makefile
1888 lustre/mdd/autoMakefile
1889 lustre/fld/Makefile
1890 lustre/fld/autoMakefile
1891 lustre/obdclass/Makefile
1892 lustre/obdclass/autoMakefile
1893 lustre/obdclass/linux/Makefile
1894 lustre/obdecho/Makefile
1895 lustre/obdecho/autoMakefile
1896 lustre/ofd/Makefile
1897 lustre/ofd/autoMakefile
1898 lustre/osc/Makefile
1899 lustre/osc/autoMakefile
1900 lustre/ost/Makefile
1901 lustre/ost/autoMakefile
1902 lustre/osd-ldiskfs/Makefile
1903 lustre/osd-ldiskfs/autoMakefile
1904 lustre/osd-zfs/Makefile
1905 lustre/osd-zfs/autoMakefile
1906 lustre/mgc/Makefile
1907 lustre/mgc/autoMakefile
1908 lustre/mgs/Makefile
1909 lustre/mgs/autoMakefile
1910 lustre/target/Makefile
1911 lustre/ptlrpc/Makefile
1912 lustre/ptlrpc/autoMakefile
1913 lustre/ptlrpc/gss/Makefile
1914 lustre/ptlrpc/gss/autoMakefile
1915 lustre/quota/Makefile
1916 lustre/quota/autoMakefile
1917 lustre/scripts/Makefile
1918 lustre/tests/Makefile
1919 lustre/tests/mpi/Makefile
1920 lustre/utils/Makefile
1921 lustre/utils/gss/Makefile
1922 lustre/osp/Makefile
1923 lustre/osp/autoMakefile
1924 lustre/lod/Makefile
1925 lustre/lod/autoMakefile
1926 lustre/obdclass/darwin/Makefile
1927 ])
1928 ])