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 'auto', tests for dependencies, if found, enables; only called 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='auto'])
 273  AC_MSG_RESULT([$enable_gss_keyring])
 274
 275  if test x$enable_gss_keyring != xno; then
 276         LB_LINUX_CONFIG_IM([KEYS],[],
 277                            [gss_keyring_conf_test='fail';
 278                             AC_MSG_WARN([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 279
 280         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 281                      [gss_keyring_conf_test='fail';
 282                       AC_MSG_WARN([libkeyutils is not found, which is required by gss keyring backend])],)
 283
 284         if test x$gss_keyring_conf_test != xfail; then
 285                 AC_DEFINE([HAVE_GSS_KEYRING], [1], [Define this if you enable gss keyring backend])
 286                 enable_gss_keyring='yes'
 287         else
 288                 if test x$enable_gss_keyring == xyes; then
 289                         AC_MSG_ERROR([Cannot enable gss_keyring. See above for details.])
 290                 else
 291                         AC_MSG_WARN([Cannot enable gss keyring.  See above for details.])
 292                 fi
 293         fi
 294  fi
 295 ])
 296
 297 AC_DEFUN([LC_CONFIG_SUNRPC],
 298 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 299                     [if test x$sunrpc_required == xyes; then
 300                          AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])
 301                      fi])
 302 ])
 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([$enable_gss])
 316
 317  if test x$enable_gss != xno; then
 318         LC_CONFIG_GSS_KEYRING
 319         sunrpc_required=$enable_gss
 320         LC_CONFIG_SUNRPC
 321         sunrpc_required=no
 322
 323         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 324                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 325         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 326                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 327         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 328                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 329         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 330                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 331
 332         require_krb5=$enable_gss
 333         AC_KERBEROS_V5
 334         require_krb5=no
 335
 336         if test x$KRBDIR != x; then
 337                 AC_CHECK_LIB([gssapi], [gss_export_lucid_sec_context],
 338                              [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi";
 339                               gss_conf_test='success'],
 340                              [AC_CHECK_LIB([gssglue], [gss_export_lucid_sec_context],
 341                                            [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue";
 342                                             gss_conf_test='success'],
 343                                            [if test x$enable_gss == xyes; then
 344                                                 AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])
 345                                             else
 346                                                 AC_MSG_WARN([libgssapi or libgssglue is not found, which is required by GSS.])
 347                                             fi])],)
 348                 AC_SUBST(GSSAPI_LIBS)
 349         fi
 350
 351         if test x$gss_conf_test == xsuccess; then
 352                 AC_DEFINE([HAVE_GSS], [1], [Define this is if you enable gss])
 353                 enable_gss='yes'
 354         fi
 355
 356  fi
 357 ])
 358
 359 # up to v2.6.27 had a 3 arg version (inode, mask, nameidata)
 360 # v2.6.27->v2.6.37 had a 2 arg version (inode, mask)
 361 # v2.6.37->v3.0 had a 3 arg version (inode, mask, nameidata)
 362 # v3.1 onward have a 2 arg version (inode, mask)
 363 AC_DEFUN([LC_INODE_PERMISION_2ARGS],
 364 [AC_MSG_CHECKING([inode_operations->permission has two args])
 365 LB_LINUX_TRY_COMPILE([
 366         #include <linux/fs.h>
 367 ],[
 368         struct inode *inode __attribute__ ((unused));
 369
 370         inode = NULL;
 371         inode->i_op->permission(NULL, 0);
 372 ],[
 373         AC_DEFINE(HAVE_INODE_PERMISION_2ARGS, 1,
 374                   [inode_operations->permission has two args])
 375         AC_MSG_RESULT([yes])
 376 ],[
 377         AC_MSG_RESULT([no])
 378 ])
 379 ])
 380
 381 # 2.6.32 replaces 2 functions blk_queue_max_phys_segments and blk_queue_max_hw_segments by blk_queue_max_segments
 382 AC_DEFUN([LC_BLK_QUEUE_MAX_SEGMENTS],
 383 [AC_MSG_CHECKING([if blk_queue_max_segments is defined])
 384 LB_LINUX_TRY_COMPILE([
 385         #include <linux/blkdev.h>
 386 ],[
 387         blk_queue_max_segments(NULL, 0);
 388 ],[
 389         AC_MSG_RESULT(yes)
 390         AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
 391                   [blk_queue_max_segments is defined])
 392 ],[
 393         AC_MSG_RESULT(no)
 394 ])
 395 ])
 396
 397 # 2.6.34 has quotactl_ops->[sg]et_dqblk that take struct fs_disk_quota
 398 AC_DEFUN([LC_HAVE_DQUOT_FS_DISK_QUOTA],
 399 tmp_flags="$EXTRA_KCFLAGS"
 400 EXTRA_KCFLAGS="-Werror"
 401 [AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct fs_disk_quota])
 402 LB_LINUX_TRY_COMPILE([
 403         #include <linux/fs.h>
 404         #include <linux/quota.h>
 405 ],[
 406         ((struct quotactl_ops *)0)->set_dqblk(NULL, 0, 0, (struct fs_disk_quota*)0);
 407 ],[
 408         AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1, [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 409         AC_MSG_RESULT([yes])
 410 ],[
 411         AC_MSG_RESULT([no])
 412         AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct kqid & fs_disk_quota])
 413         LB_LINUX_TRY_COMPILE([
 414                 #include <linux/fs.h>
 415                 #include <linux/quota.h>
 416         ],[
 417                 ((struct quotactl_ops *)0)->set_dqblk((struct super_block*)0, *((struct kqid*)0), (struct fs_disk_quota*)0);
 418         ],[
 419                 AC_DEFINE(HAVE_DQUOT_FS_DISK_QUOTA, 1, [quotactl_ops.set_dqblk takes struct fs_disk_quota])
 420                 AC_DEFINE(HAVE_DQUOT_KQID, 1, [quotactl_ops.set_dqblk takes struct kqid])
 421                 AC_MSG_RESULT([yes])
 422         ],[
 423                 AC_MSG_RESULT([no])
 424                 AC_MSG_CHECKING([if quotactl_ops.set_dqblk takes struct kqid&fs_disk_quota])
 425         ])
 426 ])
 427 EXTRA_KCFLAGS="$tmp_flags"
 428 ])
 429
 430 # 2.6.34 has renamed dquot options to dquot_*, check for dquot_suspend
 431 AC_DEFUN([LC_HAVE_DQUOT_SUSPEND],
 432 [AC_MSG_CHECKING([if dquot_suspend is defined])
 433 LB_LINUX_TRY_COMPILE([
 434         #include <linux/quotaops.h>
 435 ],[
 436         dquot_suspend(NULL, -1);
 437 ],[
 438         AC_DEFINE(HAVE_DQUOT_SUSPEND, 1, [dquot_suspend is defined])
 439         AC_MSG_RESULT([yes])
 440 ],[
 441         AC_MSG_RESULT([no])
 442 ])
 443 ])
 444
 445 #
 446 # LC_QUOTA64
 447 #
 448 # Check if kernel has been patched for 64-bit quota limits support.
 449 # The upstream version of this patch in RHEL6 2.6.32 kernels introduces
 450 # the constant QFMT_VFS_V1 in include/linux/quota.h, so we can check for
 451 # that in the absence of quotaio_v1.h in the kernel headers.
 452 #
 453 AC_DEFUN([LC_QUOTA64],[
 454         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
 455 tmp_flags="$EXTRA_KCFLAGS"
 456 EXTRA_KCFLAGS="-I$LINUX/fs"
 457         LB_LINUX_TRY_COMPILE([
 458                 #include <linux/kernel.h>
 459                 #include <linux/fs.h>
 460                 #if defined(HAVE_FS_QUOTA_QUOTAIO_H)
 461                 # include <quota/quotaio_v2.h>
 462                 struct v2r1_disk_dqblk dqblk_r1;
 463                 #else
 464                 #include <linux/quota.h>
 465                 int ver = QFMT_VFS_V1;
 466                 #endif
 467         ],[],[
 468                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
 469                 AC_MSG_RESULT([yes])
 470         ],[
 471                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 472                         AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
 473                 ],[])
 474                 AC_MSG_RESULT([no])
 475         ])
 476 EXTRA_KCFLAGS=$tmp_flags
 477 ])
 478
 479 #
 480 # 2.6.36 fs_struct.lock use spinlock instead of rwlock.
 481 #
 482 AC_DEFUN([LC_FS_STRUCT_RWLOCK],
 483 [AC_MSG_CHECKING([if fs_struct.lock use rwlock])
 484 LB_LINUX_TRY_COMPILE([
 485         #include <asm/atomic.h>
 486         #include <linux/spinlock.h>
 487         #include <linux/fs_struct.h>
 488 ],[
 489         ((struct fs_struct *)0)->lock = (rwlock_t){ 0 };
 490 ],[
 491         AC_DEFINE(HAVE_FS_STRUCT_RWLOCK, 1,
 492                   [fs_struct.lock use rwlock])
 493         AC_MSG_RESULT([yes])
 494 ],[
 495         AC_MSG_RESULT([no])
 496 ])
 497 ])
 498
 499 #
 500 # 2.6.36 super_operations add evict_inode method. it hybird of
 501 # delete_inode & clear_inode.
 502 #
 503 AC_DEFUN([LC_SBOPS_EVICT_INODE],
 504 [AC_MSG_CHECKING([if super_operations.evict_inode exist])
 505 LB_LINUX_TRY_COMPILE([
 506         #include <linux/fs.h>
 507 ],[
 508         ((struct super_operations *)0)->evict_inode(NULL);
 509 ],[
 510         AC_DEFINE(HAVE_SBOPS_EVICT_INODE, 1,
 511                 [super_operations.evict_inode() is exist in kernel])
 512         AC_MSG_RESULT([yes])
 513 ],[
 514         AC_MSG_RESULT([no])
 515 ])
 516 ])
 517
 518 #
 519 # 2.6.35 file_operations.fsync taken 2 arguments.
 520 # 3.0.0 file_operations.fsync takes 4 arguments.
 521 #
 522 AC_DEFUN([LC_FILE_FSYNC],
 523 [AC_MSG_CHECKING([if file_operations.fsync takes 4 or 2 arguments])
 524 LB_LINUX_TRY_COMPILE([
 525         #include <linux/fs.h>
 526 ],[
 527         ((struct file_operations *)0)->fsync(NULL, 0, 0, 0);
 528 ],[
 529         AC_DEFINE(HAVE_FILE_FSYNC_4ARGS, 1,
 530                 [file_operations.fsync takes 4 arguments])
 531         AC_MSG_RESULT([yes, 4 args])
 532 ],[
 533         LB_LINUX_TRY_COMPILE([
 534                 #include <linux/fs.h>
 535         ],[
 536            ((struct file_operations *)0)->fsync(NULL, 0);
 537         ],[
 538                 AC_DEFINE(HAVE_FILE_FSYNC_2ARGS, 1,
 539                         [file_operations.fsync takes 2 arguments])
 540                 AC_MSG_RESULT([yes, 2 args])
 541         ],[
 542                 AC_MSG_RESULT([no])
 543         ])
 544 ])
 545 ])
 546
 547 #
 548 # 2.6.37 remove kernel_locked
 549 #
 550 AC_DEFUN([LC_KERNEL_LOCKED],
 551 [AC_MSG_CHECKING([if kernel_locked is defined])
 552 LB_LINUX_TRY_COMPILE([
 553         #include <linux/smp_lock.h>
 554 ],[
 555         kernel_locked();
 556 ],[
 557         AC_MSG_RESULT([yes])
 558         AC_DEFINE(HAVE_KERNEL_LOCKED, 1,
 559                 [kernel_locked is defined])
 560 ],[
 561         AC_MSG_RESULT([no])
 562 ])
 563 ])
 564
 565 #
 566 # 2.6.38 dentry_operations.d_compare() taken 7 arguments.
 567 #
 568 AC_DEFUN([LC_D_COMPARE_7ARGS],
 569 [AC_MSG_CHECKING([if d_compare taken 7 arguments])
 570 LB_LINUX_TRY_COMPILE([
 571         #include <linux/dcache.h>
 572 ],[
 573         ((struct dentry_operations*)0)->d_compare(NULL,NULL,NULL,NULL,0,NULL,NULL);
 574 ],[
 575         AC_DEFINE(HAVE_D_COMPARE_7ARGS, 1,
 576                 [d_compare need 7 arguments])
 577         AC_MSG_RESULT([yes])
 578 ],[
 579         AC_MSG_RESULT([no])
 580 ])
 581 ])
 582
 583 #
 584 # 2.6.38 dentry_operations.d_delete() defined 'const' for 1st parameter.
 585 #
 586 AC_DEFUN([LC_D_DELETE_CONST],
 587 [AC_MSG_CHECKING([if d_delete has const declare on first parameter])
 588 tmp_flags="$EXTRA_KCFLAGS"
 589 EXTRA_KCFLAGS="-Werror"
 590 LB_LINUX_TRY_COMPILE([
 591         #include <linux/dcache.h>
 592 ],[
 593         const struct dentry *d = NULL;
 594         ((struct dentry_operations*)0)->d_delete(d);
 595 ],[
 596         AC_DEFINE(HAVE_D_DELETE_CONST, const,
 597                 [d_delete first parameter declared const])
 598         AC_MSG_RESULT([yes])
 599 ],[
 600         AC_DEFINE(HAVE_D_DELETE_CONST, , [])
 601         AC_MSG_RESULT([no])
 602 ])
 603 EXTRA_KCFLAGS="$tmp_flags"
 604 ])
 605
 606 #
 607 # 2.6.38 dcache_lock removed. rcu-walk commited.
 608 #
 609 AC_DEFUN([LC_DCACHE_LOCK],
 610 [AC_MSG_CHECKING([if dcache_lock is exist])
 611 LB_LINUX_TRY_COMPILE([
 612         #include <linux/dcache.h>
 613 ],[
 614         spin_lock(&dcache_lock);
 615 ],[
 616         AC_DEFINE(HAVE_DCACHE_LOCK, 1,
 617                 [dcache_lock is exist])
 618         AC_MSG_RESULT([yes])
 619 ],[
 620         AC_MSG_RESULT([no])
 621 ])
 622 ])
 623
 624 #
 625 # 2.6.38 inode.i_rcu added.
 626 #
 627 AC_DEFUN([LC_INODE_I_RCU],
 628 [AC_MSG_CHECKING([if inode.i_rcu exists])
 629 LB_LINUX_TRY_COMPILE([
 630         #include <linux/fs.h>
 631 ],[
 632         struct inode ino;
 633         struct rcu_head rcu = {};
 634         ino.i_rcu = rcu;
 635 ],[
 636         AC_DEFINE(HAVE_INODE_I_RCU, 1,
 637                 [inode.i_rcu exists])
 638         AC_MSG_RESULT([yes])
 639 ],[
 640         AC_MSG_RESULT([no])
 641 ])
 642 ])
 643
 644 #
 645 # 2.6.38 export blkdev_get_by_dev
 646 #
 647 AC_DEFUN([LC_BLKDEV_GET_BY_DEV],
 648 [LB_CHECK_SYMBOL_EXPORT([blkdev_get_by_dev],
 649 [fs/block_dev.c],[
 650 AC_DEFINE(HAVE_BLKDEV_GET_BY_DEV, 1,
 651             [blkdev_get_by_dev is exported by the kernel])
 652 ],[
 653 ])
 654 ])
 655
 656 #
 657 # 2.6.38 export simple_setattr
 658 #
 659 AC_DEFUN([LC_EXPORT_SIMPLE_SETATTR],
 660 [LB_CHECK_SYMBOL_EXPORT([simple_setattr],
 661 [fs/libfs.c],[
 662 AC_DEFINE(HAVE_SIMPLE_SETATTR, 1,
 663             [simple_setattr is exported by the kernel])
 664 ],[
 665 ])
 666 ])
 667
 668 #
 669 # truncate callback removed since 2.6.39
 670 #
 671 AC_DEFUN([LC_IOP_TRUNCATE],
 672 [AC_MSG_CHECKING([inode_operations has .truncate member function])
 673 LB_LINUX_TRY_COMPILE([
 674         #include <linux/fs.h>
 675 ],[
 676         ((struct inode_operations *)0)->truncate(NULL);
 677 ],[
 678         AC_DEFINE(HAVE_INODEOPS_TRUNCATE, 1,
 679                   [inode_operations has .truncate member function])
 680         AC_MSG_RESULT([yes])
 681 ],[
 682         AC_MSG_RESULT([no])
 683 ])
 684 ])
 685
 686 #
 687 # 2.6.39 remove unplug_fn from request_queue.
 688 #
 689 AC_DEFUN([LC_REQUEST_QUEUE_UNPLUG_FN],
 690 [AC_MSG_CHECKING([if request_queue has unplug_fn field])
 691 LB_LINUX_TRY_COMPILE([
 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         AC_MSG_RESULT([yes])
 699 ],[
 700         AC_MSG_RESULT([no])
 701 ])
 702 ])
 703
 704 #
 705 # 2.6.39 replace get_sb with mount in struct file_system_type
 706 #
 707 AC_DEFUN([LC_HAVE_FSTYPE_MOUNT],
 708 [AC_MSG_CHECKING([if file_system_type has mount field])
 709 LB_LINUX_TRY_COMPILE([
 710         #include <linux/fs.h>
 711 ],[
 712         struct file_system_type fst;
 713         void *i = (void *) fst.mount;
 714 ],[
 715         AC_DEFINE(HAVE_FSTYPE_MOUNT, 1,
 716                 [struct file_system_type has mount field])
 717         AC_MSG_RESULT([yes])
 718 ],[
 719         AC_MSG_RESULT([no])
 720 ])
 721 ])
 722
 723 #
 724 # 3.0 dirty_inode() has a flag parameter
 725 # see kernel commit aa38572954ade525817fe88c54faebf85e5a61c0
 726 #
 727 AC_DEFUN([LC_DIRTY_INODE_WITH_FLAG],
 728 [AC_MSG_CHECKING([if dirty_inode super_operation takes flag])
 729 LB_LINUX_TRY_COMPILE([
 730         #include <linux/fs.h>
 731 ],[
 732         struct inode *inode;
 733         inode->i_sb->s_op->dirty_inode(NULL, 0);
 734 ],[
 735         AC_DEFINE(HAVE_DIRTY_INODE_HAS_FLAG, 1,
 736                   [dirty_inode super_operation takes flag])
 737         AC_MSG_RESULT([yes])
 738 ],[
 739         AC_MSG_RESULT([no])
 740 ])
 741 ])
 742
 743 #
 744 # 2.6.38 generic_permission taken 4 parameters.
 745 # in fact, it means rcu-walk aware permission bring.
 746 #
 747 # 3.1 generic_permission taken 2 parameters.
 748 # see kernel commit 2830ba7f34ebb27c4e5b8b6ef408cd6d74860890
 749 #
 750 AC_DEFUN([LC_GENERIC_PERMISSION],
 751 [AC_MSG_CHECKING([if generic_permission take 2 or 4 arguments])
 752 LB_LINUX_TRY_COMPILE([
 753         #include <linux/fs.h>
 754 ],[
 755         generic_permission(NULL, 0);
 756 ],[
 757         AC_DEFINE(HAVE_GENERIC_PERMISSION_2ARGS, 1,
 758                   [generic_permission taken 2 arguments])
 759         AC_MSG_RESULT([yes, 2 args])
 760 ],[
 761         LB_LINUX_TRY_COMPILE([
 762                 #include <linux/fs.h>
 763         ],[
 764                 generic_permission(NULL, 0, 0, NULL);
 765         ],[
 766                 AC_DEFINE(HAVE_GENERIC_PERMISSION_4ARGS, 1,
 767                           [generic_permission taken 4 arguments])
 768                 AC_MSG_RESULT([yes, 4 args])
 769         ],[
 770                 AC_MSG_RESULT([no])
 771         ])
 772 ])
 773 ])
 774
 775 #
 776 # 3.1 renames lock-manager ops(lock_manager_operations) from fl_xxx to lm_xxx
 777 # see kernel commit 8fb47a4fbf858a164e973b8ea8ef5e83e61f2e50
 778 #
 779 AC_DEFUN([LC_LM_XXX_LOCK_MANAGER_OPS],
 780 [AC_MSG_CHECKING([if lock-manager ops renamed to lm_xxx])
 781 LB_LINUX_TRY_COMPILE([
 782         #include <linux/fs.h>
 783 ],[
 784         struct lock_manager_operations lm_ops;
 785         lm_ops.lm_compare_owner = NULL;
 786 ],[
 787         AC_DEFINE(HAVE_LM_XXX_LOCK_MANAGER_OPS, 1,
 788                   [lock-manager ops renamed to lm_xxx])
 789         AC_MSG_RESULT([yes])
 790 ],[
 791         AC_MSG_RESULT([no])
 792 ])
 793 ])
 794
 795 #
 796 # 3.1 kills inode->i_alloc_sem, use i_dio_count and inode_dio_wait/
 797 #     inode_dio_done instead.
 798 # see kernel commit bd5fe6c5eb9c548d7f07fe8f89a150bb6705e8e3
 799 #
 800 AC_DEFUN([LC_INODE_DIO_WAIT],
 801 [AC_MSG_CHECKING([if inode->i_alloc_sem is killed and use inode_dio_wait/done.])
 802 LB_LINUX_TRY_COMPILE([
 803         #include <linux/fs.h>
 804 ],[
 805         inode_dio_wait((struct inode *)0);
 806         inode_dio_done((struct inode *)0);
 807 ],[
 808         AC_DEFINE(HAVE_INODE_DIO_WAIT, 1,
 809                   [inode->i_alloc_sem is killed and use inode_dio_wait/done])
 810         AC_MSG_RESULT([yes])
 811 ],[
 812         AC_MSG_RESULT([no])
 813 ])
 814 ])
 815
 816 #
 817 # 3.1 adds get_acl method to inode_operations to read ACL from disk.
 818 # see kernel commit 4e34e719e457f2e031297175410fc0bd4016a085
 819 #
 820 AC_DEFUN([LC_IOP_GET_ACL],
 821 [AC_MSG_CHECKING([inode_operations has .get_acl member function])
 822 LB_LINUX_TRY_COMPILE([
 823         #include <linux/fs.h>
 824 ],[
 825         struct inode_operations iop;
 826         iop.get_acl = NULL;
 827 ],[
 828         AC_DEFINE(HAVE_IOP_GET_ACL, 1,
 829                   [inode_operations has .get_acl member function])
 830         AC_MSG_RESULT([yes])
 831 ],[
 832         AC_MSG_RESULT([no])
 833 ])
 834 ])
 835
 836 #
 837 # 3.1 introduced generic_file_llseek_size()
 838 #
 839 AC_DEFUN([LC_FILE_LLSEEK_SIZE],
 840         [LB_CHECK_SYMBOL_EXPORT([generic_file_llseek_size],
 841         [fs/read_write.c],
 842         [AC_DEFINE(HAVE_FILE_LLSEEK_SIZE, 1,
 843                    [generic_file_llseek_size is exported by the kernel])])
 844 ])
 845
 846 #
 847 # 3.2 request_queue.make_request_fn defined as function returns with void
 848 # see kernel commit 5a7bbad27a410350e64a2d7f5ec18fc73836c14f
 849 #
 850 AC_DEFUN([LC_HAVE_VOID_MAKE_REQUEST_FN],
 851 [AC_MSG_CHECKING([if request_queue.make_request_fn returns void but not int])
 852 LB_LINUX_TRY_COMPILE([
 853         #include <linux/blkdev.h>
 854 ],[
 855         int ret;
 856         make_request_fn         *mrf;
 857         ret = mrf(NULL, NULL);
 858 ],[
 859         AC_MSG_RESULT([no])
 860 ],[
 861         AC_DEFINE(HAVE_VOID_MAKE_REQUEST_FN, 1,
 862                   [request_queue.make_request_fn returns void but not int])
 863         AC_MSG_RESULT([yes])
 864 ])
 865 ])
 866
 867 #
 868 # 3.2 protects inode->i_nlink from direct modification
 869 # see kernel commit a78ef704a8dd430225955f0709b22d4a6ba21deb
 870 # at the same time adds set_nlink(), so checks set_nlink() for it.
 871 #
 872 AC_DEFUN([LC_HAVE_PROTECT_I_NLINK],
 873 [AC_MSG_CHECKING([if inode->i_nlink is protected from direct modification])
 874 LB_LINUX_TRY_COMPILE([
 875         #include <linux/fs.h>
 876 ],[
 877         struct inode i;
 878         set_nlink(&i, 1);
 879 ],[
 880         AC_DEFINE(HAVE_PROTECT_I_NLINK, 1,
 881                   [inode->i_nlink is protected from direct modification])
 882         AC_MSG_RESULT([yes])
 883 ],[
 884         AC_MSG_RESULT([no])
 885 ])
 886 ])
 887
 888 #
 889 # 3.3 introduces migrate_mode.h and migratepage has 4 args
 890 #
 891 AC_DEFUN([LC_HAVE_MIGRATE_HEADER],
 892 [LB_CHECK_FILE([$LINUX/include/linux/migrate.h],[
 893                 AC_DEFINE(HAVE_MIGRATE_H, 1,
 894                 [kernel has include/linux/migrate.h])
 895 ],[LB_CHECK_FILE([$LINUX/include/linux/migrate_mode.h],[
 896                 AC_DEFINE(HAVE_MIGRATE_MODE_H, 1,
 897                         [kernel has include/linux/migrate_mode.h])
 898 ],[
 899         AC_MSG_RESULT([no])
 900 ])
 901 ])
 902 ])
 903
 904 AC_DEFUN([LC_MIGRATEPAGE_4ARGS],
 905 [AC_MSG_CHECKING([if address_space_operations.migratepage has 4 args])
 906 LB_LINUX_TRY_COMPILE([
 907         #include <linux/fs.h>
 908 #ifdef HAVE_MIGRATE_H
 909         #include <linux/migrate.h>
 910 #elif defined(HAVE_MIGRATE_MODE_H)
 911         #include <linux/migrate_mode.h>
 912 #endif
 913 ],[
 914         struct address_space_operations aops;
 915
 916         aops.migratepage(NULL, NULL, NULL, MIGRATE_ASYNC);
 917 ],[
 918         AC_DEFINE(HAVE_MIGRATEPAGE_4ARGS, 1,
 919                 [address_space_operations.migratepage has 4 args])
 920         AC_MSG_RESULT([yes])
 921 ],[
 922         AC_MSG_RESULT([no])
 923 ])
 924 ])
 925
 926 #
 927 # 3.3 switchs super_operations to use dentry as parameter (but not vfsmount)
 928 # see kernel commit 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4
 929 #
 930 AC_DEFUN([LC_SUPEROPS_USE_DENTRY],
 931 [AC_MSG_CHECKING([if super_operations use dentry as parameter])
 932 tmp_flags="$EXTRA_KCFLAGS"
 933 EXTRA_KCFLAGS="-Werror"
 934 LB_LINUX_TRY_COMPILE([
 935         #include <linux/fs.h>
 936         int show_options(struct seq_file *seq, struct dentry *root){
 937                 return 0;
 938         }
 939 ],[
 940         struct super_operations ops;
 941         ops.show_options = show_options;
 942 ],[
 943         AC_DEFINE(HAVE_SUPEROPS_USE_DENTRY, 1,
 944                   [super_operations use dentry as parameter])
 945         AC_MSG_RESULT([yes])
 946 ],[
 947         AC_MSG_RESULT([no])
 948 ])
 949 EXTRA_KCFLAGS="$tmp_flags"
 950 ])
 951
 952 #
 953 # 3.3 switchs inode_operations to use umode_t as parameter (but not int)
 954 # see kernel commit 1a67aafb5f72a436ca044293309fa7e6351d6a35
 955 #
 956 AC_DEFUN([LC_INODEOPS_USE_UMODE_T],
 957 [AC_MSG_CHECKING([if inode_operations use umode_t as parameter])
 958 tmp_flags="$EXTRA_KCFLAGS"
 959 EXTRA_KCFLAGS="-Werror"
 960 LB_LINUX_TRY_COMPILE([
 961         #include <linux/fs.h>
 962         #include <linux/types.h>
 963         int my_mknod(struct inode *dir, struct dentry *dchild,
 964                      umode_t mode, dev_t dev)
 965         {
 966                 return 0;
 967         }
 968 ],[
 969         struct inode_operations ops;
 970         ops.mknod = my_mknod;
 971 ],[
 972         AC_DEFINE(HAVE_INODEOPS_USE_UMODE_T, 1,
 973                   [inode_operations use umode_t as parameter])
 974         AC_MSG_RESULT([yes])
 975 ],[
 976         AC_MSG_RESULT([no])
 977 ])
 978 EXTRA_KCFLAGS="$tmp_flags"
 979 ])
 980
 981 # 3.4 kmap_atomic removes second argument
 982 # see kernel commit 1ec9c5ddc17aa398f05646abfcbaf315b544e62f
 983 #
 984 AC_DEFUN([LC_KMAP_ATOMIC_HAS_1ARG],
 985 [AC_MSG_CHECKING([if kmap_atomic has only 1 argument])
 986 LB_LINUX_TRY_COMPILE([
 987         #include <linux/highmem.h>
 988 ],[
 989         kmap_atomic(NULL);
 990 ],[
 991         AC_DEFINE(HAVE_KMAP_ATOMIC_HAS_1ARG, 1,
 992                   [have kmap_atomic has only 1 argument])
 993         AC_MSG_RESULT([yes])
 994 ],[
 995         AC_MSG_RESULT([no])
 996 ])
 997 ])
 998
 999 #
1000 # 3.4 switchs touch_atime to struct path
1001 # see kernel commit 68ac1234fb949b66941d94dce4157742799fc581
1002 #
1003 AC_DEFUN([LC_TOUCH_ATIME_1ARG],
1004 [AC_MSG_CHECKING([if touch_atime use one argument])
1005 LB_LINUX_TRY_COMPILE([
1006         #include <linux/fs.h>
1007 ],[
1008         touch_atime((struct path *)NULL);
1009 ],[
1010         AC_DEFINE(HAVE_TOUCH_ATIME_1ARG, 1,
1011                   [touch_atime use one argument])
1012         AC_MSG_RESULT([yes])
1013 ],[
1014         AC_MSG_RESULT([no])
1015 ])
1016 ])
1017
1018 #
1019 # 3.4 converts d_alloc_root to d_make_root
1020 # see kernel commit 32991ab305ace7017c62f8eecbe5eb36dc32e13b
1021 #
1022 AC_DEFUN([LC_HAVE_D_MAKE_ROOT],
1023 [AC_MSG_CHECKING([if have d_make_root])
1024 LB_LINUX_TRY_COMPILE([
1025         #include <linux/fs.h>
1026 ],[
1027         d_make_root((struct inode *)NULL);
1028 ],[
1029         AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
1030                   [have d_make_root])
1031         AC_MSG_RESULT([yes])
1032 ],[
1033         AC_MSG_RESULT([no])
1034 ])
1035 ])
1036
1037 #
1038 # 3.4 cache_register/cache_unregister are removed
1039 # see kernel commit 2c5f846747526e2b83c5f1b8e69016be0e2e87c0
1040 # Note, since 2.6.37 cache_register_net/cache_unregister_net
1041 # are defined, but not exported.
1042 # 3.3 cache_register_net/cache_unregister_net are
1043 # exported and replacing cache_register/cache_unregister in 3.4
1044 #
1045 AC_DEFUN([LC_HAVE_CACHE_REGISTER],
1046 [AC_MSG_CHECKING([if have cache_register])
1047 LB_LINUX_TRY_COMPILE([
1048         #include <linux/sunrpc/cache.h>
1049 ],[
1050         cache_register(NULL);
1051 ],[
1052         AC_DEFINE(HAVE_CACHE_REGISTER, 1,
1053                   [have cache_register])
1054         AC_MSG_RESULT([yes])
1055 ],[
1056         AC_MSG_RESULT([no])
1057 ])
1058 ])
1059
1060 #
1061 # 3.5 renames end_writeback() back to clear_inode()...
1062 # see kernel commit dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430
1063 #
1064 AC_DEFUN([LC_HAVE_CLEAR_INODE],
1065 [AC_MSG_CHECKING([if have clear_inode])
1066 LB_LINUX_TRY_COMPILE([
1067         #include <linux/fs.h>
1068 ],[
1069         clear_inode((struct inode *)NULL);
1070 ],[
1071         AC_DEFINE(HAVE_CLEAR_INODE, 1,
1072                   [have clear_inode])
1073         AC_MSG_RESULT([yes])
1074 ],[
1075         AC_MSG_RESULT([no])
1076 ])
1077 ])
1078
1079 #
1080 # 3.5 encode_fh has parent inode passed in directly
1081 # see kernel commit b0b0382b
1082 #
1083 AC_DEFUN([LC_HAVE_ENCODE_FH_PARENT],
1084 [AC_MSG_CHECKING([if encode_fh have parent inode as parameter])
1085 tmp_flags="$EXTRA_KCFLAGS"
1086 EXTRA_KCFLAGS="-Werror"
1087 LB_LINUX_TRY_COMPILE([
1088         #include <linux/exportfs.h>
1089         #include <linux/fs.h>
1090         #include <linux/types.h>
1091         int ll_encode_fh(struct inode *i, __u32 *a, int *b, struct inode *p)
1092         {
1093                 return 0;
1094         }
1095 ],[
1096         struct export_operations exp_op;
1097         exp_op.encode_fh = ll_encode_fh;
1098 ],[
1099         AC_DEFINE(HAVE_ENCODE_FH_PARENT, 1,
1100                   [have parent inode as parameter])
1101         AC_MSG_RESULT([yes])
1102 ],[
1103         AC_MSG_RESULT([no])
1104 ])
1105 EXTRA_KCFLAGS="$tmp_flags"
1106 ])
1107
1108 # 3.5 has generic_file_llseek_size with 5 args
1109 AC_DEFUN([LC_FILE_LLSEEK_SIZE_5ARG],
1110 [AC_MSG_CHECKING([if kernel has generic_file_llseek_size with 5 args])
1111 LB_LINUX_TRY_COMPILE([
1112         #include <linux/fs.h>
1113 ],[
1114         generic_file_llseek_size(NULL, 0, 0, 0, 0);
1115 ], [
1116         AC_MSG_RESULT([yes])
1117         AC_DEFINE(HAVE_FILE_LLSEEK_SIZE_5ARGS, 1,
1118                 [kernel has generic_file_llseek_size with 5 args])
1119 ],[
1120         AC_MSG_RESULT([no])
1121 ])
1122 ])
1123
1124 #
1125 # 3.6 switch i_dentry/d_alias from list to hlist
1126 #
1127 AC_DEFUN([LC_HAVE_DENTRY_D_ALIAS_HLIST],
1128 [AC_MSG_CHECKING([if i_dentry/d_alias uses hlist])
1129 tmp_flags="$EXTRA_KCFLAGS"
1130 EXTRA_KCFLAGS="-Werror"
1131 LB_LINUX_TRY_COMPILE([
1132         #include <linux/fs.h>
1133         #include <linux/list.h>
1134 ],[
1135         struct inode inode;
1136         struct dentry dentry;
1137         struct hlist_head head;
1138         struct hlist_node node;
1139         inode.i_dentry = head;
1140         dentry.d_alias = node;
1141 ],[
1142         AC_DEFINE(HAVE_DENTRY_D_ALIAS_HLIST, 1,
1143                   [have i_dentry/d_alias uses hlist])
1144         AC_MSG_RESULT([yes])
1145 ],[
1146         AC_MSG_RESULT([no])
1147 ])
1148 EXTRA_KCFLAGS="$tmp_flags"
1149 ])
1150
1151 #
1152 # 3.6 dentry_open uses struct path as first argument
1153 # see kernel commit 765927b2
1154 #
1155 AC_DEFUN([LC_DENTRY_OPEN_USE_PATH],
1156 [AC_MSG_CHECKING([if dentry_open uses struct path as first argument])
1157 tmp_flags="$EXTRA_KCFLAGS"
1158 EXTRA_KCFLAGS="-Werror"
1159 LB_LINUX_TRY_COMPILE([
1160         #include <linux/fs.h>
1161         #include <linux/path.h>
1162 ],[
1163         struct path path;
1164         dentry_open(&path, 0, NULL);
1165 ],[
1166         AC_DEFINE(HAVE_DENTRY_OPEN_USE_PATH, 1,
1167                   [dentry_open uses struct path as first argument])
1168         AC_MSG_RESULT([yes])
1169 ],[
1170         AC_MSG_RESULT([no])
1171 ])
1172 EXTRA_KCFLAGS="$tmp_flags"
1173 ])
1174
1175 #
1176 # 3.6 vfs adds iop->atomic_open
1177 #
1178 AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN],
1179 [AC_MSG_CHECKING([if iop has atomic_open])
1180 LB_LINUX_TRY_COMPILE([
1181         #include <linux/fs.h>
1182 ],[
1183         struct inode_operations iop;
1184         iop.atomic_open = NULL;
1185 ],[
1186         AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
1187                   [have iop atomic_open])
1188         AC_MSG_RESULT([yes])
1189 ],[
1190         AC_MSG_RESULT([no])
1191 ])
1192 ])
1193
1194 #
1195 # 3.7 posix_acl_{to,from}_xattr take struct user_namespace
1196 #
1197 AC_DEFUN([LC_HAVE_POSIXACL_USER_NS],
1198 [AC_MSG_CHECKING([if posix_acl_to_xattr takes struct user_namespace])
1199 LB_LINUX_TRY_COMPILE([
1200         #include <linux/fs.h>
1201         #include <linux/posix_acl_xattr.h>
1202 ],[
1203         posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
1204 ],[
1205         AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
1206                   [posix_acl_to_xattr takes struct user_namespace])
1207         AC_MSG_RESULT([yes])
1208 ],[
1209         AC_MSG_RESULT([no])
1210 ])
1211 ])
1212
1213 #
1214 # 3.8 struct file has new member f_inode
1215 #
1216 AC_DEFUN([LC_HAVE_FILE_F_INODE],
1217 [AC_MSG_CHECKING([if struct file has memeber f_inode])
1218 LB_LINUX_TRY_COMPILE([
1219         #include <linux/fs.h>
1220 ],[
1221         ((struct file *)0)->f_inode = NULL;
1222 ],[
1223         AC_DEFINE(HAVE_FILE_F_INODE, 1,
1224                   [struct file has memeber f_inode])
1225         AC_MSG_RESULT([yes])
1226 ],[
1227         AC_MSG_RESULT([no])
1228 ])
1229 ])
1230
1231 AC_DEFUN([LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS],
1232 [AC_MSG_CHECKING([if sunrpc_cache_pipe_upcall takes 3 args])
1233 LB_LINUX_TRY_COMPILE([
1234         #include <linux/sunrpc/cache.h>
1235 ],[
1236         sunrpc_cache_pipe_upcall(NULL, NULL, NULL);
1237 ],[
1238         AC_DEFINE(HAVE_SUNRPC_UPCALL_HAS_3ARGS, 1,
1239                 [sunrpc_cache_pipe_upcall takes 3 args])
1240         AC_MSG_RESULT([yes])
1241 ],[
1242         AC_MSG_RESULT([no])
1243 ])
1244 ])
1245
1246 #
1247 # 3.9 uses hlist_for_each_entry with 3 args
1248 # b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
1249 #
1250 AC_DEFUN([LC_HAVE_HLIST_FOR_EACH_3ARG],
1251 [AC_MSG_CHECKING([if hlist_for_each_entry has 3 args])
1252 LB_LINUX_TRY_COMPILE([
1253         #include <linux/list.h>
1254         #include <linux/fs.h>
1255 ],[
1256         struct inode *inode;
1257         struct dentry *dentry;
1258         hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
1259                 continue;
1260         }
1261 ],[
1262         AC_DEFINE(HAVE_HLIST_FOR_EACH_3ARG, 1, [3 args])
1263         AC_MSG_RESULT([yes])
1264 ],[
1265         AC_MSG_RESULT([no])
1266 ])
1267 ])
1268
1269 #
1270 # 3.9 killed f_vfsmnt by
1271 # 182be684784334598eee1d90274e7f7aa0063616
1272 # replacement is f_path.mnt
1273 #
1274 AC_DEFUN([LC_HAVE_F_PATH_MNT],
1275 [AC_MSG_CHECKING([if struct file has f_path.mnt])
1276 LB_LINUX_TRY_COMPILE([
1277         #include <linux/fs.h>
1278 ],[
1279         struct file *fp = NULL;
1280         struct path  path;
1281
1282         path.mnt = fp->f_path.mnt;
1283 ],[
1284         AC_DEFINE(HAVE_F_PATH_MNT,1,[yes])
1285         AC_MSG_RESULT([yes])
1286 ],[
1287         AC_MSG_RESULT([no])
1288 ])
1289 ])
1290
1291 #
1292 # 3.10+ only supports procfs seq_files handling
1293 #
1294 AC_DEFUN([LC_HAVE_ONLY_PROCFS_SEQ],
1295 [AC_MSG_CHECKING([if procfs only supports using seq_files])
1296 LB_LINUX_TRY_COMPILE([
1297         #include <linux/proc_fs.h>
1298 ],[
1299         ((struct proc_dir_entry *)0)->write_proc(NULL, NULL, 0, NULL);
1300 ],[
1301         AC_MSG_RESULT([no])
1302 ],[
1303         AC_DEFINE(HAVE_ONLY_PROCFS_SEQ, 1, [only seq_files supported])
1304         AC_MSG_RESULT([yes])
1305 ])
1306 ])
1307
1308 # 3.10 release for block device doesn't return int
1309 AC_DEFUN([LC_BLKDEV_RELEASE_RETURN_INT],
1310 [AC_MSG_CHECKING([if block_device_operations release returns int])
1311 LB_LINUX_TRY_COMPILE([
1312         #include <linux/blkdev.h>
1313 ],[
1314         struct block_device_operations fops;
1315         int i __attribute__ ((unused));
1316
1317         i = fops.release(NULL,0);
1318 ],[
1319         AC_MSG_RESULT([yes])
1320         AC_DEFINE(HAVE_BLKDEV_RELEASE_RETURN_INT, 1,
1321                   [block device release returns int])
1322 ],[
1323         AC_MSG_RESULT([no])
1324 ])
1325 ])
1326
1327 #
1328 # 3.11 dentry_operations.d_compare() taken 5 arguments.
1329 #
1330 AC_DEFUN([LC_D_COMPARE_5ARGS],
1331 [AC_MSG_CHECKING([if d_compare taken 5 arguments])
1332 LB_LINUX_TRY_COMPILE([
1333         #include <linux/dcache.h>
1334 ],[
1335         ((struct dentry_operations*)0)->d_compare(NULL,NULL,0,NULL,NULL);
1336 ],[
1337         AC_DEFINE(HAVE_D_COMPARE_5ARGS, 1,
1338                 [d_compare need 5 arguments])
1339         AC_MSG_RESULT([yes])
1340 ],[
1341         AC_MSG_RESULT([no])
1342 ])
1343 ])
1344
1345 #
1346 # 3.11 need to access d_count to get dentry reference count
1347 #
1348 AC_DEFUN([LC_HAVE_DCOUNT],
1349 [AC_MSG_CHECKING([if d_count exist])
1350 LB_LINUX_TRY_COMPILE([
1351         #include <linux/dcache.h>
1352 ],[
1353         struct dentry de;
1354
1355         d_count(&de);
1356 ],[
1357         AC_DEFINE(HAVE_D_COUNT, 1, [d_count exist])
1358         AC_MSG_RESULT([yes])
1359 ],[
1360         AC_MSG_RESULT([no])
1361 ])
1362 ])
1363
1364 #
1365 # LC_PROG_LINUX
1366 #
1367 # Lustre linux kernel checks
1368 #
1369 AC_DEFUN([LC_PROG_LINUX],
1370          [
1371          LC_CONFIG_PINGER
1372          LC_CONFIG_CHECKSUM
1373          LC_CONFIG_LIBLUSTRE_RECOVERY
1374          LC_CONFIG_HEALTH_CHECK_WRITE
1375          LC_CONFIG_LRU_RESIZE
1376          LC_LLITE_LLOOP_MODULE
1377
1378          LC_CAPA_CRYPTO
1379          LC_CONFIG_RMTCLIENT
1380          LC_CONFIG_GSS
1381
1382          # 2.6.32
1383          LC_BLK_QUEUE_MAX_SEGMENTS
1384
1385          # 2.6.34
1386          LC_HAVE_DQUOT_FS_DISK_QUOTA
1387          LC_HAVE_DQUOT_SUSPEND
1388
1389          # 2.6.35, 3.0.0
1390          LC_FILE_FSYNC
1391          LC_EXPORT_SIMPLE_SETATTR
1392          LC_EXPORT_TRUNCATE_COMPLETE_PAGE
1393
1394          # 2.6.36
1395          LC_FS_STRUCT_RWLOCK
1396          LC_SBOPS_EVICT_INODE
1397
1398          # 2.6.37
1399          LC_KERNEL_LOCKED
1400
1401          # 2.6.38
1402          LC_BLKDEV_GET_BY_DEV
1403          LC_GENERIC_PERMISSION
1404          LC_DCACHE_LOCK
1405          LC_INODE_I_RCU
1406          LC_D_COMPARE_7ARGS
1407          LC_D_DELETE_CONST
1408
1409          # 2.6.39
1410          LC_REQUEST_QUEUE_UNPLUG_FN
1411          LC_HAVE_FSTYPE_MOUNT
1412          LC_IOP_TRUNCATE
1413
1414          # 3.0
1415          LC_DIRTY_INODE_WITH_FLAG
1416
1417          # 3.1
1418          LC_LM_XXX_LOCK_MANAGER_OPS
1419          LC_INODE_DIO_WAIT
1420          LC_IOP_GET_ACL
1421          LC_FILE_LLSEEK_SIZE
1422          LC_INODE_PERMISION_2ARGS
1423
1424          # 3.2
1425          LC_HAVE_VOID_MAKE_REQUEST_FN
1426          LC_HAVE_PROTECT_I_NLINK
1427
1428          # 3.3
1429          LC_HAVE_MIGRATE_HEADER
1430          LC_MIGRATEPAGE_4ARGS
1431          LC_SUPEROPS_USE_DENTRY
1432          LC_INODEOPS_USE_UMODE_T
1433          LC_HAVE_CACHE_REGISTER
1434
1435          # 3.4
1436          LC_TOUCH_ATIME_1ARG
1437          LC_HAVE_D_MAKE_ROOT
1438          LC_KMAP_ATOMIC_HAS_1ARG
1439
1440          # 3.5
1441          LC_HAVE_CLEAR_INODE
1442          LC_HAVE_ENCODE_FH_PARENT
1443          LC_FILE_LLSEEK_SIZE_5ARG
1444
1445          # 3.6
1446          LC_HAVE_DENTRY_D_ALIAS_HLIST
1447          LC_DENTRY_OPEN_USE_PATH
1448          LC_HAVE_IOP_ATOMIC_OPEN
1449
1450          # 3.7
1451          LC_HAVE_POSIXACL_USER_NS
1452
1453          # 3.8
1454          LC_HAVE_FILE_F_INODE
1455          LC_HAVE_SUNRPC_UPCALL_HAS_3ARGS
1456
1457          # 3.9
1458          LC_HAVE_HLIST_FOR_EACH_3ARG
1459          LC_HAVE_F_PATH_MNT
1460
1461          # 3.10
1462          LC_HAVE_ONLY_PROCFS_SEQ
1463          LC_BLKDEV_RELEASE_RETURN_INT
1464
1465          # 3.11
1466          LC_D_COMPARE_5ARGS
1467          LC_HAVE_DCOUNT
1468
1469          #
1470          if test x$enable_server != xno ; then
1471                 LC_FUNC_DEV_SET_RDONLY
1472                 LC_STACK_SIZE
1473                 LC_QUOTA64
1474                 LC_QUOTA_CONFIG
1475          fi
1476 ])
1477
1478 #
1479 # LC_CONFIG_CLIENT
1480 #
1481 # Check whether to build the client side of Lustre
1482 #
1483 AC_DEFUN([LC_CONFIG_CLIENT],
1484 [AC_MSG_CHECKING([whether to build Lustre client support])
1485 AC_ARG_ENABLE([client],
1486         AC_HELP_STRING([--disable-client],
1487                         [disable Lustre client support]),
1488         [],[enable_client='yes'])
1489 AC_MSG_RESULT([$enable_client])
1490 ])
1491
1492 #
1493 # LC_CONFIG_LIBLUSTRE
1494 #
1495 # whether to build liblustre
1496 #
1497 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1498 [AC_MSG_CHECKING([whether to build Lustre library])
1499 AC_ARG_ENABLE([liblustre],
1500         AC_HELP_STRING([--disable-liblustre],
1501                         [disable building of Lustre library]),
1502         [],[enable_liblustre=$with_sysio])
1503 AC_MSG_RESULT([$enable_liblustre])
1504 # only build sysio if liblustre is built
1505 with_sysio="$enable_liblustre"
1506
1507 AC_MSG_CHECKING([whether to build liblustre tests])
1508 AC_ARG_ENABLE([liblustre-tests],
1509         AC_HELP_STRING([--enable-liblustre-tests],
1510                         [enable liblustre tests, if --disable-tests is used]),
1511         [],[enable_liblustre_tests=$enable_tests])
1512 if test x$enable_liblustre != xyes ; then
1513    enable_liblustre_tests='no'
1514 fi
1515 AC_MSG_RESULT([$enable_liblustre_tests])
1516
1517 AC_MSG_CHECKING([whether to enable liblustre acl])
1518 AC_ARG_ENABLE([liblustre-acl],
1519         AC_HELP_STRING([--disable-liblustre-acl],
1520                         [disable ACL support for liblustre]),
1521         [],[enable_liblustre_acl=yes])
1522 AC_MSG_RESULT([$enable_liblustre_acl])
1523 if test x$enable_liblustre_acl = xyes ; then
1524   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1525 fi
1526
1527 #
1528 # --enable-mpitest
1529 #
1530 AC_ARG_ENABLE(mpitests,
1531         AC_HELP_STRING([--enable-mpitests=yes|no|mpicc wrapper],
1532                            [include mpi tests]),
1533         [
1534          enable_mpitests=yes
1535          case $enableval in
1536          yes)
1537                 MPICC_WRAPPER=mpicc
1538                 ;;
1539          no)
1540                 enable_mpitests=no
1541                 ;;
1542          *)
1543                 MPICC_WRAPPER=$enableval
1544                  ;;
1545          esac
1546         ],
1547         [
1548         MPICC_WRAPPER=mpicc
1549         enable_mpitests=yes
1550         ]
1551 )
1552
1553 if test x$enable_mpitests != xno; then
1554         AC_MSG_CHECKING([whether mpitests can be built])
1555         oldcc=$CC
1556         CC=$MPICC_WRAPPER
1557         AC_LINK_IFELSE(
1558             [AC_LANG_PROGRAM([[
1559                     #include <mpi.h>
1560                 ]],[[
1561                     int flag;
1562                     MPI_Initialized(&flag);
1563                 ]])],
1564             [
1565                     AC_MSG_RESULT([yes])
1566             ],[
1567                     AC_MSG_RESULT([no])
1568                     enable_mpitests=no
1569         ])
1570         CC=$oldcc
1571 fi
1572 AC_SUBST(MPICC_WRAPPER)
1573
1574 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1575 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1576
1577 LC_CONFIG_PINGER
1578 LC_CONFIG_LIBLUSTRE_RECOVERY
1579 ])
1580
1581 #
1582 # LC_CONFIG_QUOTA
1583 #
1584 # whether to enable quota support global control
1585 #
1586 AC_DEFUN([LC_CONFIG_QUOTA],
1587 [AC_ARG_ENABLE([quota],
1588         AC_HELP_STRING([--enable-quota],
1589                         [enable quota support]),
1590         [],[enable_quota='yes'])
1591 ])
1592
1593 AC_DEFUN([LC_QUOTA],
1594 [#check global
1595 LC_CONFIG_QUOTA
1596 #check for utils
1597 if test x$enable_quota != xno -a x$enable_utils != xno; then
1598 AC_CHECK_HEADER(sys/quota.h,
1599                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1600                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1601 fi
1602 ])
1603
1604 #
1605 # LC_CONFIG_SPLIT
1606 #
1607 # whether to enable split support
1608 #
1609 AC_DEFUN([LC_CONFIG_SPLIT],
1610 [AC_MSG_CHECKING([whether to enable split support])
1611 AC_ARG_ENABLE([split],
1612         AC_HELP_STRING([--enable-split],
1613                         [enable split support]),
1614         [],[enable_split='no'])
1615 AC_MSG_RESULT([$enable_split])
1616 if test x$enable_split != xno; then
1617    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1618 fi
1619 ])
1620
1621 #
1622 # LC_CONFIG_NODEMAP_PROC_DEBUG
1623 #
1624 # enable nodemap proc file debugging
1625 #
1626 AC_DEFUN([LC_NODEMAP_PROC_DEBUG],
1627 [AC_MSG_CHECKING([whether to enable nodemap proc debug])
1628 AC_ARG_ENABLE([nodemap_proc_debug],
1629         AC_HELP_STRING([--enable-nodemap-proc-debug],
1630                         [enable nodemap proc debug]),
1631         [],[enable_nodemap_proc_debug='no'])
1632 AC_MSG_RESULT([$enable_nodemap_proc_debug])
1633 if test x$enable_nodemap_proc_debug != xno; then
1634    AC_DEFINE(NODEMAP_PROC_DEBUG, 1, [enable nodemap proc debug support])
1635 fi
1636 ])
1637
1638 #
1639 # LC_LLITE_LLOOP_MODULE
1640 # lloop_llite.ko does not currently work with page sizes
1641 # of 64k or larger.
1642 #
1643 AC_DEFUN([LC_LLITE_LLOOP_MODULE],
1644 [AC_MSG_CHECKING([whether to enable llite_lloop module])
1645 LB_LINUX_TRY_COMPILE([
1646         #include <asm/page.h>
1647 ],[
1648         #if PAGE_SIZE >= 65536
1649         #error "PAGE_SIZE >= 65536"
1650         #endif
1651 ],[
1652         enable_llite_lloop_module='yes'
1653         AC_MSG_RESULT([yes])
1654 ],[
1655         enable_llite_lloop_module='no'
1656         AC_MSG_RESULT([no])
1657 ])
1658 ])
1659
1660 #
1661 # LC_OSD_ADDON
1662 #
1663 # configure support for optional OSD implementation
1664 #
1665 AC_DEFUN([LC_OSD_ADDON],
1666 [AC_MSG_CHECKING([for osd])
1667 AC_ARG_WITH([osd],
1668         AC_HELP_STRING([--with-osd=path],
1669                        [set path to optional osd]),
1670         [
1671                 case $with_osd in
1672                         no)     ENABLEOSDADDON=0
1673                                 ;;
1674                         *)      OSDADDON="${with_osd}"
1675                                 ENABLEOSDADDON=1
1676                                 ;;
1677                 esac
1678         ], [
1679                 ENABLEOSDADDON=0
1680         ])
1681 if test $ENABLEOSDADDON -eq 0; then
1682         AC_MSG_RESULT([no])
1683         OSDADDON=
1684 else
1685         OSDMODNAME=`basename $OSDADDON`
1686         if test -e $LUSTRE/$OSDMODNAME; then
1687                 AC_MSG_RESULT([can't link])
1688                 OSDADDON=
1689         elif ln -s $OSDADDON $LUSTRE/$OSDMODNAME; then
1690                 AC_MSG_RESULT([$OSDMODNAME])
1691                 OSDADDON="subdir-m += $OSDMODNAME"
1692         else
1693                 AC_MSG_RESULT([can't link])
1694                 OSDADDON=
1695         fi
1696 fi
1697 AC_SUBST(OSDADDON)
1698 ])
1699
1700 #
1701 # LC_CONFIGURE
1702 #
1703 # other configure checks
1704 #
1705 AC_DEFUN([LC_CONFIGURE],
1706 [LC_CONFIG_OBD_BUFFER_SIZE
1707
1708 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1709         CFLAGS="$CFLAGS -Werror"
1710 fi
1711
1712 # maximum MDS thread count
1713 LC_MDS_MAX_THREADS
1714
1715 # include/liblustre.h
1716 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1717
1718 # liblustre/llite_lib.h
1719 AC_CHECK_HEADERS([xtio.h file.h])
1720
1721 # liblustre/dir.c
1722 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
1723
1724 # liblustre/lutil.c
1725 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
1726 AC_CHECK_FUNCS([inet_ntoa])
1727
1728 # libsysio/src/readlink.c
1729 LC_READLINK_SSIZE_T
1730
1731 # libcfs prng.c - depends on linux/types.h from liblustre/dir.c
1732 AC_CHECK_HEADERS([linux/random.h], [], [],
1733                  [#ifdef HAVE_LINUX_TYPES_H
1734                   # include <linux/types.h>
1735                   #endif
1736                  ])
1737
1738 # utils/llverfs.c
1739 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
1740
1741 # check for -lz support
1742 ZLIB=""
1743 AC_CHECK_LIB([z],
1744              [adler32],
1745              [AC_CHECK_HEADERS([zlib.h],
1746                                [ZLIB="-lz"
1747                                 AC_DEFINE([HAVE_ADLER], 1,
1748                                           [support alder32 checksum type])],
1749                                [AC_MSG_WARN([No zlib-devel package found,
1750                                              unable to use adler32 checksum])])],
1751              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
1752 )
1753 AC_SUBST(ZLIB)
1754
1755 SELINUX=""
1756 AC_CHECK_LIB([selinux],
1757                 [is_selinux_enabled],
1758                 [AC_CHECK_HEADERS([selinux.h],
1759                                 [SELINUX="-lselinux"
1760                                 AC_DEFINE([HAVE_SELINUX], 1,
1761                                                 [support for selinux ])],
1762                                 [AC_MSG_WARN([No selinux-devel package found,
1763                                                 unable to build selinux enabled
1764                                                 tools])])],
1765                 [AC_MSG_WARN([No selinux package found, unable to build selinux
1766                                 enabled tools])]
1767 )
1768 AC_SUBST(SELINUX)
1769
1770 # Super safe df
1771 AC_ARG_ENABLE([mindf],
1772       AC_HELP_STRING([--enable-mindf],
1773                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
1774       [],[])
1775 if test "$enable_mindf" = "yes" ;  then
1776       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
1777 fi
1778
1779 AC_ARG_ENABLE([fail_alloc],
1780         AC_HELP_STRING([--disable-fail-alloc],
1781                 [disable randomly alloc failure]),
1782         [],[enable_fail_alloc=yes])
1783 AC_MSG_CHECKING([whether to randomly failing memory alloc])
1784 AC_MSG_RESULT([$enable_fail_alloc])
1785 if test x$enable_fail_alloc != xno ; then
1786         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
1787 fi
1788
1789 AC_ARG_ENABLE([invariants],
1790         AC_HELP_STRING([--enable-invariants],
1791                 [enable invariant checking (cpu intensive)]),
1792         [],[])
1793 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
1794 AC_MSG_RESULT([$enable_invariants])
1795 if test x$enable_invariants = xyes ; then
1796         AC_DEFINE([CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK], 1, [enable invariant checking])
1797 fi
1798
1799 AC_ARG_ENABLE([lu_ref],
1800         AC_HELP_STRING([--enable-lu_ref],
1801                 [enable lu_ref reference tracking code]),
1802         [],[])
1803 AC_MSG_CHECKING([whether to track references with lu_ref])
1804 AC_MSG_RESULT([$enable_lu_ref])
1805 if test x$enable_lu_ref = xyes ; then
1806         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
1807 fi
1808
1809 AC_ARG_ENABLE([pgstate-track],
1810               AC_HELP_STRING([--enable-pgstate-track],
1811                              [enable page state tracking]),
1812               [enable_pgstat_track='yes'],[])
1813 AC_MSG_CHECKING([whether to enable page state tracking])
1814 AC_MSG_RESULT([$enable_pgstat_track])
1815 if test x$enable_pgstat_track = xyes ; then
1816         AC_DEFINE([CONFIG_DEBUG_PAGESTATE_TRACKING], 1,
1817                   [enable page state tracking code])
1818 fi
1819 ])
1820
1821 #
1822 # LC_CONDITIONALS
1823 #
1824 # AM_CONDITIONALS for lustre
1825 #
1826 AC_DEFUN([LC_CONDITIONALS],
1827 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
1828 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
1829 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
1830 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
1831 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
1832 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
1833 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
1834 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
1835 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
1836 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
1837 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
1838 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
1839 AM_CONDITIONAL(LLITE_LLOOP, test x$enable_llite_lloop_module = xyes)
1840 ])
1841
1842 #
1843 # LC_CONFIG_FILES
1844 #
1845 # files that should be generated with AC_OUTPUT
1846 #
1847 AC_DEFUN([LC_CONFIG_FILES],
1848 [AC_CONFIG_FILES([
1849 lustre/Makefile
1850 lustre/autoMakefile
1851 lustre/autoconf/Makefile
1852 lustre/conf/Makefile
1853 lustre/contrib/Makefile
1854 lustre/doc/Makefile
1855 lustre/include/Makefile
1856 lustre/include/lustre_ver.h
1857 lustre/include/linux/Makefile
1858 lustre/include/darwin/Makefile
1859 lustre/include/lustre/Makefile
1860 lustre/kernel_patches/targets/2.6-rhel6.target
1861 lustre/kernel_patches/targets/2.6-rhel5.target
1862 lustre/kernel_patches/targets/2.6-sles11.target
1863 lustre/kernel_patches/targets/3.0-sles11.target
1864 lustre/kernel_patches/targets/3.0-sles11sp3.target
1865 lustre/kernel_patches/targets/2.6-fc11.target
1866 lustre/kernel_patches/targets/2.6-fc12.target
1867 lustre/kernel_patches/targets/2.6-fc15.target
1868 lustre/kernel_patches/targets/3.x-fc18.target
1869 lustre/ldlm/Makefile
1870 lustre/fid/Makefile
1871 lustre/fid/autoMakefile
1872 lustre/liblustre/Makefile
1873 lustre/liblustre/tests/Makefile
1874 lustre/liblustre/tests/mpi/Makefile
1875 lustre/llite/Makefile
1876 lustre/llite/autoMakefile
1877 lustre/lclient/Makefile
1878 lustre/lov/Makefile
1879 lustre/lov/autoMakefile
1880 lustre/mdc/Makefile
1881 lustre/mdc/autoMakefile
1882 lustre/lmv/Makefile
1883 lustre/lmv/autoMakefile
1884 lustre/lfsck/Makefile
1885 lustre/lfsck/autoMakefile
1886 lustre/mdt/Makefile
1887 lustre/mdt/autoMakefile
1888 lustre/nodemap/Makefile
1889 lustre/nodemap/autoMakefile
1890 lustre/mdd/Makefile
1891 lustre/mdd/autoMakefile
1892 lustre/fld/Makefile
1893 lustre/fld/autoMakefile
1894 lustre/obdclass/Makefile
1895 lustre/obdclass/autoMakefile
1896 lustre/obdclass/linux/Makefile
1897 lustre/obdecho/Makefile
1898 lustre/obdecho/autoMakefile
1899 lustre/ofd/Makefile
1900 lustre/ofd/autoMakefile
1901 lustre/osc/Makefile
1902 lustre/osc/autoMakefile
1903 lustre/ost/Makefile
1904 lustre/ost/autoMakefile
1905 lustre/osd-ldiskfs/Makefile
1906 lustre/osd-ldiskfs/autoMakefile
1907 lustre/osd-zfs/Makefile
1908 lustre/osd-zfs/autoMakefile
1909 lustre/mgc/Makefile
1910 lustre/mgc/autoMakefile
1911 lustre/mgs/Makefile
1912 lustre/mgs/autoMakefile
1913 lustre/target/Makefile
1914 lustre/ptlrpc/Makefile
1915 lustre/ptlrpc/autoMakefile
1916 lustre/ptlrpc/gss/Makefile
1917 lustre/ptlrpc/gss/autoMakefile
1918 lustre/quota/Makefile
1919 lustre/quota/autoMakefile
1920 lustre/scripts/Makefile
1921 lustre/tests/Makefile
1922 lustre/tests/mpi/Makefile
1923 lustre/utils/Makefile
1924 lustre/utils/gss/Makefile
1925 lustre/osp/Makefile
1926 lustre/osp/autoMakefile
1927 lustre/lod/Makefile
1928 lustre/lod/autoMakefile
1929 lustre/obdclass/darwin/Makefile
1930 ])
1931 ])