lustre/autoconf/lustre-core.m4

   1 #* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2 #* vim:expandtab:shiftwidth=8:tabstop=8:
   3 #
   4 # LC_CONFIG_SRCDIR
   5 #
   6 # Wrapper for AC_CONFIG_SUBDIR
   7 #
   8 AC_DEFUN([LC_CONFIG_SRCDIR],
   9 [AC_CONFIG_SRCDIR([lustre/obdclass/obdo.c])
  10 libcfs_is_module=yes
  11 ])
  12
  13 #
  14 # LC_PATH_DEFAULTS
  15 #
  16 # lustre specific paths
  17 #
  18 AC_DEFUN([LC_PATH_DEFAULTS],
  19 [# ptlrpc kernel build requires this
  20 LUSTRE="$PWD/lustre"
  21 AC_SUBST(LUSTRE)
  22
  23 # mount.lustre
  24 rootsbindir='/sbin'
  25 AC_SUBST(rootsbindir)
  26
  27 demodir='$(docdir)/demo'
  28 AC_SUBST(demodir)
  29
  30 pkgexampledir='${pkgdatadir}/examples'
  31 AC_SUBST(pkgexampledir)
  32 ])
  33
  34 #
  35 # LC_TARGET_SUPPORTED
  36 #
  37 # is the target os supported?
  38 #
  39 AC_DEFUN([LC_TARGET_SUPPORTED],
  40 [case $target_os in
  41         linux* | darwin*)
  42 $1
  43                 ;;
  44         *)
  45 $2
  46                 ;;
  47 esac
  48 ])
  49
  50 #
  51 # LC_CONFIG_EXT3
  52 #
  53 # that ext3 is enabled in the kernel
  54 #
  55 AC_DEFUN([LC_CONFIG_EXT3],
  56 [LB_LINUX_CONFIG([EXT3_FS],[],[
  57         LB_LINUX_CONFIG([EXT3_FS_MODULE],[],[$2])
  58 ])
  59 LB_LINUX_CONFIG([EXT3_FS_XATTR],[$1],[$3])
  60 ])
  61
  62 #
  63 # LC_FSHOOKS
  64 #
  65 # If we have (and can build) fshooks.h
  66 #
  67 AC_DEFUN([LC_FSHOOKS],
  68 [LB_CHECK_FILE([$LINUX/include/linux/fshooks.h],[
  69         AC_MSG_CHECKING([if fshooks.h can be compiled])
  70         LB_LINUX_TRY_COMPILE([
  71                 #include <linux/fshooks.h>
  72         ],[],[
  73                 AC_MSG_RESULT([yes])
  74         ],[
  75                 AC_MSG_RESULT([no])
  76                 AC_MSG_WARN([You might have better luck with gcc 3.3.x.])
  77                 AC_MSG_WARN([You can set CC=gcc33 before running configure.])
  78                 AC_MSG_ERROR([Your compiler cannot build fshooks.h.])
  79         ])
  80 $1
  81 ],[
  82 $2
  83 ])
  84 ])
  85
  86 #
  87 # LC_STRUCT_KIOBUF
  88 #
  89 # rh 2.4.18 has iobuf->dovary, but other kernels do not
  90 #
  91 AC_DEFUN([LC_STRUCT_KIOBUF],
  92 [AC_MSG_CHECKING([if struct kiobuf has a dovary field])
  93 LB_LINUX_TRY_COMPILE([
  94         #include <linux/iobuf.h>
  95 ],[
  96         struct kiobuf iobuf;
  97         iobuf.dovary = 1;
  98 ],[
  99         AC_MSG_RESULT([yes])
 100         AC_DEFINE(HAVE_KIOBUF_DOVARY, 1, [struct kiobuf has a dovary field])
 101 ],[
 102         AC_MSG_RESULT([no])
 103 ])
 104 ])
 105
 106 #
 107 # LC_FUNC_COND_RESCHED
 108 #
 109 # cond_resched() was introduced in 2.4.20
 110 #
 111 AC_DEFUN([LC_FUNC_COND_RESCHED],
 112 [AC_MSG_CHECKING([if kernel offers cond_resched])
 113 LB_LINUX_TRY_COMPILE([
 114         #include <linux/sched.h>
 115 ],[
 116         cond_resched();
 117 ],[
 118         AC_MSG_RESULT([yes])
 119         AC_DEFINE(HAVE_COND_RESCHED, 1, [cond_resched found])
 120 ],[
 121         AC_MSG_RESULT([no])
 122 ])
 123 ])
 124
 125 #
 126 # LC_FUNC_RELEASEPAGE_WITH_INT
 127 #
 128 # if ->releasepage() takes an int arg in 2.6.9
 129 # This kernel defines gfp_t (HAS_GFP_T) but doesn't use it for this function,
 130 # while others either don't have gfp_t or pass gfp_t as the parameter.
 131 #
 132 AC_DEFUN([LC_FUNC_RELEASEPAGE_WITH_INT],
 133 [AC_MSG_CHECKING([if releasepage has a int parameter])
 134 RELEASEPAGE_WITH_INT="`grep -c 'releasepage.*int' $LINUX/include/linux/fs.h`"
 135 if test "$RELEASEPAGE_WITH_INT" != 0 ; then
 136         AC_DEFINE(HAVE_RELEASEPAGE_WITH_INT, 1,
 137                   [releasepage with int parameter])
 138         AC_MSG_RESULT([yes])
 139 else
 140         AC_MSG_RESULT([no])
 141 fi
 142 ])
 143
 144
 145 #
 146 # LC_FUNC_ZAP_PAGE_RANGE
 147 #
 148 # if zap_page_range() takes a vma arg
 149 #
 150 AC_DEFUN([LC_FUNC_ZAP_PAGE_RANGE],
 151 [AC_MSG_CHECKING([if zap_page_range with vma parameter])
 152 ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
 153 if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
 154         AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
 155         AC_MSG_RESULT([yes])
 156 else
 157         AC_MSG_RESULT([no])
 158 fi
 159 ])
 160
 161 #
 162 # LC_FUNC_PDE
 163 #
 164 # if proc_fs.h defines PDE()
 165 #
 166 AC_DEFUN([LC_FUNC_PDE],
 167 [AC_MSG_CHECKING([if kernel defines PDE])
 168 HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
 169 if test "$HAVE_PDE" != 0 ; then
 170         AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
 171         AC_MSG_RESULT([yes])
 172 else
 173         AC_MSG_RESULT([no])
 174 fi
 175 ])
 176
 177 #
 178 # LC_FUNC_FILEMAP_FDATASYNC
 179 #
 180 # if filemap_fdatasync() exists
 181 #
 182 AC_DEFUN([LC_FUNC_FILEMAP_FDATAWRITE],
 183 [AC_MSG_CHECKING([whether filemap_fdatawrite() is defined])
 184 LB_LINUX_TRY_COMPILE([
 185         #include <linux/fs.h>
 186 ],[
 187         int (*foo)(struct address_space *)= filemap_fdatawrite;
 188 ],[
 189         AC_MSG_RESULT([yes])
 190         AC_DEFINE(HAVE_FILEMAP_FDATAWRITE, 1, [filemap_fdatawrite() found])
 191 ],[
 192         AC_MSG_RESULT([no])
 193 ])
 194 ])
 195
 196 #
 197 # LC_FUNC_DIRECT_IO
 198 #
 199 # if direct_IO takes a struct file argument
 200 #
 201 AC_DEFUN([LC_FUNC_DIRECT_IO],
 202 [AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
 203 HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
 204 if test "$HAVE_DIO_FILE" != 0 ; then
 205         AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
 206         AC_MSG_RESULT(yes)
 207 else
 208         AC_MSG_RESULT(no)
 209 fi
 210 ])
 211
 212 #
 213 # LC_HEADER_MM_INLINE
 214 #
 215 # RHEL kernels define page_count in mm_inline.h
 216 #
 217 AC_DEFUN([LC_HEADER_MM_INLINE],
 218 [AC_MSG_CHECKING([if kernel has mm_inline.h header])
 219 LB_LINUX_TRY_COMPILE([
 220         #include <linux/mm_inline.h>
 221 ],[
 222         #ifndef page_count
 223         #error mm_inline.h does not define page_count
 224         #endif
 225 ],[
 226         AC_MSG_RESULT([yes])
 227         AC_DEFINE(HAVE_MM_INLINE, 1, [mm_inline found])
 228 ],[
 229         AC_MSG_RESULT([no])
 230 ])
 231 ])
 232
 233 #
 234 # LC_STRUCT_INODE
 235 #
 236 # if inode->i_alloc_sem exists
 237 #
 238 AC_DEFUN([LC_STRUCT_INODE],
 239 [AC_MSG_CHECKING([if struct inode has i_alloc_sem])
 240 LB_LINUX_TRY_COMPILE([
 241         #include <linux/fs.h>
 242         #include <linux/version.h>
 243 ],[
 244         #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,24))
 245         #error "down_read_trylock broken before 2.4.24"
 246         #endif
 247         struct inode i;
 248         return (char *)&i.i_alloc_sem - (char *)&i;
 249 ],[
 250         AC_MSG_RESULT([yes])
 251         AC_DEFINE(HAVE_I_ALLOC_SEM, 1, [struct inode has i_alloc_sem])
 252 ],[
 253         AC_MSG_RESULT([no])
 254 ])
 255 ])
 256
 257 #
 258 # LC_FUNC_REGISTER_CACHE
 259 #
 260 # if register_cache() is defined by kernel
 261 #
 262 # There are two ways to shrink one customized cache in linux kernels. For the
 263 # kernels are prior than 2.6.5(?), register_cache() is used, and for latest
 264 # kernels, set_shrinker() is used instead.
 265 #
 266 AC_DEFUN([LC_FUNC_REGISTER_CACHE],
 267 [AC_MSG_CHECKING([if kernel defines cache pressure hook])
 268 LB_LINUX_TRY_COMPILE([
 269         #include <linux/mm.h>
 270 ],[
 271         shrinker_t shrinker;
 272
 273         set_shrinker(1, shrinker);
 274 ],[
 275         AC_MSG_RESULT([set_shrinker])
 276         AC_DEFINE(HAVE_SHRINKER_CACHE, 1, [shrinker_cache found])
 277         AC_DEFINE(HAVE_CACHE_RETURN_INT, 1, [shrinkers should return int])
 278 ],[
 279         LB_LINUX_TRY_COMPILE([
 280                 #include <linux/list.h>
 281                 #include <linux/cache_def.h>
 282         ],[
 283                 struct cache_definition cache;
 284         ],[
 285                 AC_MSG_RESULT([register_cache])
 286                 AC_DEFINE(HAVE_REGISTER_CACHE, 1, [register_cache found])
 287                 AC_MSG_CHECKING([if kernel expects return from cache shrink ])
 288                 tmp_flags="$EXTRA_KCFLAGS"
 289                 EXTRA_KCFLAGS="-Werror"
 290                 LB_LINUX_TRY_COMPILE([
 291                         #include <linux/list.h>
 292                         #include <linux/cache_def.h>
 293                 ],[
 294                         struct cache_definition c;
 295                         c.shrinker = (int (*)(int, unsigned int))1;
 296                 ],[
 297                         AC_DEFINE(HAVE_CACHE_RETURN_INT, 1,
 298                                   [kernel expects return from shrink_cache])
 299                         AC_MSG_RESULT(yes)
 300                 ],[
 301                         AC_MSG_RESULT(no)
 302                 ])
 303                 EXTRA_KCFLAGS="$tmp_flags"
 304         ],[
 305                 AC_MSG_RESULT([no])
 306         ])
 307 ])
 308 ])
 309
 310 #
 311 # LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
 312 #
 313 # check for our patched grab_cache_page_nowait_gfp() function
 314 #
 315 AC_DEFUN([LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP],
 316 [AC_MSG_CHECKING([if kernel defines grab_cache_page_nowait_gfp()])
 317 HAVE_GCPN_GFP="`grep -c 'grab_cache_page_nowait_gfp' $LINUX/include/linux/pagemap.h`"
 318 if test "$HAVE_GCPN_GFP" != 0 ; then
 319         AC_DEFINE(HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP, 1,
 320                 [kernel has grab_cache_page_nowait_gfp()])
 321         AC_MSG_RESULT(yes)
 322 else
 323         AC_MSG_RESULT(no)
 324 fi
 325 ])
 326
 327 #
 328 # LC_FUNC_DEV_SET_RDONLY
 329 #
 330 # check for the old-style dev_set_rdonly which took an extra "devno" param
 331 # and can only set a single device to discard writes at one time
 332 #
 333 AC_DEFUN([LC_FUNC_DEV_SET_RDONLY],
 334 [AC_MSG_CHECKING([if kernel has new dev_set_rdonly])
 335 LB_LINUX_TRY_COMPILE([
 336         #include <linux/fs.h>
 337 ],[
 338         #ifndef HAVE_CLEAR_RDONLY_ON_PUT
 339         #error needs to be patched by lustre kernel patches from Lustre version 1.4.3 or above.
 340         #endif
 341 ],[
 342         AC_MSG_RESULT([yes])
 343         AC_DEFINE(HAVE_DEV_SET_RDONLY, 1, [kernel has new dev_set_rdonly])
 344 ],[
 345         AC_MSG_RESULT([no, Linux kernel source needs to be patches by lustre
 346 kernel patches from Lustre version 1.4.3 or above.])
 347 ])
 348 ])
 349
 350 #
 351 # LC_CONFIG_BACKINGFS
 352 #
 353 # setup, check the backing filesystem
 354 #
 355 AC_DEFUN([LC_CONFIG_BACKINGFS],
 356 [
 357 BACKINGFS="ldiskfs"
 358
 359 if test x$with_ldiskfs = xno ; then
 360         BACKINGFS="ext3"
 361
 362         if test x$linux25$enable_server = xyesyes ; then
 363                 AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
 364         fi
 365
 366         # --- Check that ext3 and ext3 xattr are enabled in the kernel
 367         LC_CONFIG_EXT3([],[
 368                 AC_MSG_ERROR([Lustre requires that ext3 is enabled in the kernel])
 369         ],[
 370                 AC_MSG_WARN([Lustre requires that extended attributes for ext3 are enabled in the kernel])
 371                 AC_MSG_WARN([This build may fail.])
 372         ])
 373 else
 374         # ldiskfs is enabled
 375         LB_DEFINE_LDISKFS_OPTIONS
 376 fi #ldiskfs
 377
 378 AC_MSG_CHECKING([which backing filesystem to use])
 379 AC_MSG_RESULT([$BACKINGFS])
 380 AC_SUBST(BACKINGFS)
 381 ])
 382
 383 #
 384 # LC_CONFIG_PINGER
 385 #
 386 # the pinger is temporary, until we have the recovery node in place
 387 #
 388 AC_DEFUN([LC_CONFIG_PINGER],
 389 [AC_MSG_CHECKING([whether to enable pinger support])
 390 AC_ARG_ENABLE([pinger],
 391         AC_HELP_STRING([--disable-pinger],
 392                         [disable recovery pinger support]),
 393         [],[enable_pinger='yes'])
 394 AC_MSG_RESULT([$enable_pinger])
 395 if test x$enable_pinger != xno ; then
 396   AC_DEFINE(ENABLE_PINGER, 1, Use the Pinger)
 397 fi
 398 ])
 399
 400 #
 401 # LC_CONFIG_CHECKSUM
 402 #
 403 # do checksum of bulk data between client and OST
 404 #
 405 AC_DEFUN([LC_CONFIG_CHECKSUM],
 406 [AC_MSG_CHECKING([whether to enable data checksum support])
 407 AC_ARG_ENABLE([checksum],
 408        AC_HELP_STRING([--disable-checksum],
 409                        [disable data checksum support]),
 410        [],[enable_checksum='yes'])
 411 AC_MSG_RESULT([$enable_checksum])
 412 if test x$enable_checksum != xno ; then
 413   AC_DEFINE(ENABLE_CHECKSUM, 1, do data checksums)
 414 fi
 415 ])
 416
 417 #
 418 # LC_CONFIG_HEALTH_CHECK_WRITE
 419 #
 420 # Turn off the actual write to the disk
 421 #
 422 AC_DEFUN([LC_CONFIG_HEALTH_CHECK_WRITE],
 423 [AC_MSG_CHECKING([whether to enable a write with the health check])
 424 AC_ARG_ENABLE([health_write],
 425         AC_HELP_STRING([--enable-health_write],
 426                         [enable disk writes when doing health check]),
 427         [],[enable_health_write='no'])
 428 AC_MSG_RESULT([$enable_health_write])
 429 if test x$enable_health_write != xno ; then
 430   AC_DEFINE(USE_HEALTH_CHECK_WRITE, 1, Write when Checking Health)
 431 fi
 432 ])
 433
 434 #
 435 # LC_CONFIG_LIBLUSTRE_RECOVERY
 436 #
 437 AC_DEFUN([LC_CONFIG_LIBLUSTRE_RECOVERY],
 438 [AC_MSG_CHECKING([whether to enable liblustre recovery support])
 439 AC_ARG_ENABLE([liblustre-recovery],
 440         AC_HELP_STRING([--disable-liblustre-recovery],
 441                         [disable liblustre recovery support]),
 442         [],[enable_liblustre_recovery='yes'])
 443 AC_MSG_RESULT([$enable_liblustre_recovery])
 444 if test x$enable_liblustre_recovery != xno ; then
 445   AC_DEFINE(ENABLE_LIBLUSTRE_RECOVERY, 1, Liblustre Can Recover)
 446 fi
 447 ])
 448
 449 #
 450 # LC_CONFIG_OBD_BUFFER_SIZE
 451 #
 452 # the maximum buffer size of lctl ioctls
 453 #
 454 AC_DEFUN([LC_CONFIG_OBD_BUFFER_SIZE],
 455 [AC_MSG_CHECKING([maximum OBD ioctl size])
 456 AC_ARG_WITH([obd-buffer-size],
 457         AC_HELP_STRING([--with-obd-buffer-size=[size]],
 458                         [set lctl ioctl maximum bytes (default=8192)]),
 459         [
 460                 OBD_BUFFER_SIZE=$with_obd_buffer_size
 461         ],[
 462                 OBD_BUFFER_SIZE=8192
 463         ])
 464 AC_MSG_RESULT([$OBD_BUFFER_SIZE bytes])
 465 AC_DEFINE_UNQUOTED(OBD_MAX_IOCTL_BUFFER, $OBD_BUFFER_SIZE, [IOCTL Buffer Size])
 466 ])
 467
 468 #
 469 # LC_STRUCT_STATFS
 470 #
 471 # AIX does not have statfs.f_namelen
 472 #
 473 AC_DEFUN([LC_STRUCT_STATFS],
 474 [AC_MSG_CHECKING([if struct statfs has a f_namelen field])
 475 LB_LINUX_TRY_COMPILE([
 476         #include <linux/vfs.h>
 477 ],[
 478         struct statfs sfs;
 479         sfs.f_namelen = 1;
 480 ],[
 481         AC_MSG_RESULT([yes])
 482         AC_DEFINE(HAVE_STATFS_NAMELEN, 1, [struct statfs has a namelen field])
 483 ],[
 484         AC_MSG_RESULT([no])
 485 ])
 486 ])
 487
 488 #
 489 # LC_READLINK_SSIZE_T
 490 #
 491 AC_DEFUN([LC_READLINK_SSIZE_T],
 492 [AC_MSG_CHECKING([if readlink returns ssize_t])
 493 AC_TRY_COMPILE([
 494         #include <unistd.h>
 495 ],[
 496         ssize_t readlink(const char *, char *, size_t);
 497 ],[
 498         AC_MSG_RESULT([yes])
 499         AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
 500 ],[
 501         AC_MSG_RESULT([no])
 502 ])
 503 ])
 504
 505 AC_DEFUN([LC_FUNC_PAGE_MAPPED],
 506 [AC_MSG_CHECKING([if kernel offers page_mapped])
 507 LB_LINUX_TRY_COMPILE([
 508         #include <linux/mm.h>
 509 ],[
 510         page_mapped(NULL);
 511 ],[
 512         AC_MSG_RESULT([yes])
 513         AC_DEFINE(HAVE_PAGE_MAPPED, 1, [page_mapped found])
 514 ],[
 515         AC_MSG_RESULT([no])
 516 ])
 517 ])
 518
 519 AC_DEFUN([LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL],
 520 [AC_MSG_CHECKING([if struct file_operations has an unlocked_ioctl field])
 521 LB_LINUX_TRY_COMPILE([
 522         #include <linux/fs.h>
 523 ],[
 524         struct file_operations fops;
 525         &fops.unlocked_ioctl;
 526 ],[
 527         AC_MSG_RESULT([yes])
 528         AC_DEFINE(HAVE_UNLOCKED_IOCTL, 1, [struct file_operations has an unlock ed_ioctl field])
 529 ],[
 530         AC_MSG_RESULT([no])
 531 ])
 532 ])
 533
 534 AC_DEFUN([LC_FILEMAP_POPULATE],
 535 [AC_MSG_CHECKING([for exported filemap_populate])
 536 LB_LINUX_TRY_COMPILE([
 537         #include <asm/page.h>
 538         #include <linux/mm.h>
 539 ],[
 540        filemap_populate(NULL, 0, 0, __pgprot(0), 0, 0);
 541 ],[
 542         AC_MSG_RESULT([yes])
 543         AC_DEFINE(HAVE_FILEMAP_POPULATE, 1, [Kernel exports filemap_populate])
 544 ],[
 545         AC_MSG_RESULT([no])
 546 ])
 547 ])
 548
 549 AC_DEFUN([LC_D_ADD_UNIQUE],
 550 [AC_MSG_CHECKING([for d_add_unique])
 551 LB_LINUX_TRY_COMPILE([
 552         #include <linux/dcache.h>
 553 ],[
 554        d_add_unique(NULL, NULL);
 555 ],[
 556         AC_MSG_RESULT([yes])
 557         AC_DEFINE(HAVE_D_ADD_UNIQUE, 1, [Kernel has d_add_unique])
 558 ],[
 559         AC_MSG_RESULT([no])
 560 ])
 561 ])
 562
 563 AC_DEFUN([LC_BIT_SPINLOCK_H],
 564 [LB_CHECK_FILE([$LINUX/include/linux/bit_spinlock.h],[
 565         AC_MSG_CHECKING([if bit_spinlock.h can be compiled])
 566         LB_LINUX_TRY_COMPILE([
 567                 #include <asm/processor.h>
 568                 #include <linux/spinlock.h>
 569                 #include <linux/bit_spinlock.h>
 570         ],[],[
 571                 AC_MSG_RESULT([yes])
 572                 AC_DEFINE(HAVE_BIT_SPINLOCK_H, 1, [Kernel has bit_spinlock.h])
 573         ],[
 574                 AC_MSG_RESULT([no])
 575         ])
 576 ],
 577 [])
 578 ])
 579
 580 #
 581 # LC_POSIX_ACL_XATTR
 582 #
 583 # If we have xattr_acl.h
 584 #
 585 AC_DEFUN([LC_XATTR_ACL],
 586 [LB_CHECK_FILE([$LINUX/include/linux/xattr_acl.h],[
 587         AC_MSG_CHECKING([if xattr_acl.h can be compiled])
 588         LB_LINUX_TRY_COMPILE([
 589                 #include <linux/xattr_acl.h>
 590         ],[],[
 591                 AC_MSG_RESULT([yes])
 592                 AC_DEFINE(HAVE_XATTR_ACL, 1, [Kernel has xattr_acl])
 593         ],[
 594                 AC_MSG_RESULT([no])
 595         ])
 596 ],
 597 [])
 598 ])
 599
 600 #
 601 # LC_LINUX_FIEMAP_H
 602 #
 603 # If we have fiemap.h
 604 # after 2.6.27 use fiemap.h in include/linux
 605 #
 606 AC_DEFUN([LC_LINUX_FIEMAP_H],
 607 [LB_CHECK_FILE([$LINUX/include/linux/fiemap.h],[
 608         AC_MSG_CHECKING([if fiemap.h can be compiled])
 609         LB_LINUX_TRY_COMPILE([
 610                 #include <linux/fiemap.h>
 611         ],[],[
 612                 AC_MSG_RESULT([yes])
 613                 AC_DEFINE(HAVE_LINUX_FIEMAP_H, 1, [Kernel has fiemap.h])
 614         ],[
 615                 AC_MSG_RESULT([no])
 616         ])
 617 ],
 618 [])
 619 ])
 620
 621
 622 AC_DEFUN([LC_STRUCT_INTENT_FILE],
 623 [AC_MSG_CHECKING([if struct open_intent has a file field])
 624 LB_LINUX_TRY_COMPILE([
 625         #include <linux/fs.h>
 626         #include <linux/namei.h>
 627 ],[
 628         struct open_intent intent;
 629         &intent.file;
 630 ],[
 631         AC_MSG_RESULT([yes])
 632         AC_DEFINE(HAVE_FILE_IN_STRUCT_INTENT, 1, [struct open_intent has a file field])
 633 ],[
 634         AC_MSG_RESULT([no])
 635 ])
 636 ])
 637
 638
 639 AC_DEFUN([LC_POSIX_ACL_XATTR_H],
 640 [LB_CHECK_FILE([$LINUX/include/linux/posix_acl_xattr.h],[
 641         AC_MSG_CHECKING([if linux/posix_acl_xattr.h can be compiled])
 642         LB_LINUX_TRY_COMPILE([
 643                 #include <linux/posix_acl_xattr.h>
 644         ],[],[
 645                 AC_MSG_RESULT([yes])
 646                 AC_DEFINE(HAVE_LINUX_POSIX_ACL_XATTR_H, 1, [linux/posix_acl_xattr.h found])
 647
 648         ],[
 649                 AC_MSG_RESULT([no])
 650         ])
 651 $1
 652 ],[
 653 AC_MSG_RESULT([no])
 654 ])
 655 ])
 656
 657 #
 658 # LC_EXPORT___IGET
 659 # starting from 2.6.19 linux kernel exports __iget()
 660 #
 661 AC_DEFUN([LC_EXPORT___IGET],
 662 [LB_CHECK_SYMBOL_EXPORT([__iget],
 663 [fs/inode.c],[
 664         AC_DEFINE(HAVE_EXPORT___IGET, 1, [kernel exports __iget])
 665 ],[
 666 ])
 667 ])
 668
 669 AC_DEFUN([LC_LUSTRE_VERSION_H],
 670 [LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
 671         rm -f "$LUSTRE/include/linux/lustre_version.h"
 672 ],[
 673         touch "$LUSTRE/include/linux/lustre_version.h"
 674         if test x$enable_server = xyes ; then
 675                 AC_MSG_WARN([Unpatched kernel detected.])
 676                 AC_MSG_WARN([Lustre servers cannot be built with an unpatched kernel;])
 677                 AC_MSG_WARN([disabling server build])
 678                 enable_server='no'
 679         fi
 680 ])
 681 ])
 682
 683 AC_DEFUN([LC_FUNC_SET_FS_PWD],
 684 [LB_CHECK_SYMBOL_EXPORT([set_fs_pwd],
 685 [fs/namespace.c],[
 686         AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd is exported])
 687 ],[
 688 ])
 689 ])
 690
 691 #
 692 # LC_CAPA_CRYPTO
 693 #
 694 AC_DEFUN([LC_CAPA_CRYPTO],
 695 [LB_LINUX_CONFIG_IM([CRYPTO],[],[
 696         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO is enabled in your kernel.])
 697 ])
 698 LB_LINUX_CONFIG_IM([CRYPTO_HMAC],[],[
 699         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_HMAC is enabled in your kernel.])
 700 ])
 701 LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],[
 702         AC_MSG_ERROR([Lustre capability require that CONFIG_CRYPTO_SHA1 is enabled in your kernel.])
 703 ])
 704 ])
 705
 706 #
 707 # LC_CONFIG_RMTCLIENT
 708 #
 709 dnl FIXME
 710 dnl the AES symbol usually tied with arch, e.g. CRYPTO_AES_586
 711 dnl FIXME
 712 AC_DEFUN([LC_CONFIG_RMTCLIENT],
 713 [LB_LINUX_CONFIG_IM([CRYPTO_AES],[],[
 714         AC_MSG_ERROR([Lustre remote client require that CONFIG_CRYPTO_AES is enabled in your kernel.])
 715 ])
 716 ])
 717
 718 AC_DEFUN([LC_SUNRPC_CACHE],
 719 [AC_MSG_CHECKING([if sunrpc struct cache_head uses kref])
 720 LB_LINUX_TRY_COMPILE([
 721         #include <linux/sunrpc/cache.h>
 722 ],[
 723         struct cache_head ch;
 724         &ch.ref.refcount;
 725 ],[
 726         AC_MSG_RESULT([yes])
 727         AC_DEFINE(HAVE_SUNRPC_CACHE_V2, 1, [sunrpc cache facility v2])
 728 ],[
 729         AC_MSG_RESULT([no])
 730 ])
 731 ])
 732
 733 AC_DEFUN([LC_CONFIG_SUNRPC],
 734 [LB_LINUX_CONFIG_IM([SUNRPC],[],
 735                     [AC_MSG_ERROR([kernel SUNRPC support is required by using GSS.])])
 736  LC_SUNRPC_CACHE
 737 ])
 738
 739 #
 740 # LC_CONFIG_GSS_KEYRING (default enabled, if gss is enabled)
 741 #
 742 AC_DEFUN([LC_CONFIG_GSS_KEYRING],
 743 [AC_MSG_CHECKING([whether to enable gss keyring backend])
 744  AC_ARG_ENABLE([gss_keyring],
 745                [AC_HELP_STRING([--disable-gss-keyring],
 746                                [disable gss keyring backend])],
 747                [],[enable_gss_keyring='yes'])
 748  AC_MSG_RESULT([$enable_gss_keyring])
 749
 750  if test x$enable_gss_keyring != xno; then
 751         LB_LINUX_CONFIG_IM([KEYS],[],
 752                            [AC_MSG_ERROR([GSS keyring backend require that CONFIG_KEYS be enabled in your kernel.])])
 753
 754         AC_CHECK_LIB([keyutils], [keyctl_search], [],
 755                      [AC_MSG_ERROR([libkeyutils is not found, which is required by gss keyring backend])],)
 756
 757         AC_DEFINE([HAVE_GSS_KEYRING], [1],
 758                   [Define this if you enable gss keyring backend])
 759  fi
 760 ])
 761
 762 #
 763 # LC_CONFIG_GSS (default disabled)
 764 #
 765 # Build gss and related tools of Lustre. Currently both kernel and user space
 766 # parts are depend on linux platform.
 767 #
 768 AC_DEFUN([LC_CONFIG_GSS],
 769 [AC_MSG_CHECKING([whether to enable gss/krb5 support])
 770  AC_ARG_ENABLE([gss],
 771                [AC_HELP_STRING([--enable-gss], [enable gss/krb5 support])],
 772                [],[enable_gss='no'])
 773  AC_MSG_RESULT([$enable_gss])
 774
 775  if test x$enable_gss == xyes; then
 776         LC_CONFIG_GSS_KEYRING
 777         LC_CONFIG_SUNRPC
 778
 779         LB_LINUX_CONFIG_IM([CRYPTO_MD5],[],
 780                            [AC_MSG_WARN([kernel MD5 support is recommended by using GSS.])])
 781         LB_LINUX_CONFIG_IM([CRYPTO_SHA1],[],
 782                            [AC_MSG_WARN([kernel SHA1 support is recommended by using GSS.])])
 783         LB_LINUX_CONFIG_IM([CRYPTO_SHA256],[],
 784                            [AC_MSG_WARN([kernel SHA256 support is recommended by using GSS.])])
 785         LB_LINUX_CONFIG_IM([CRYPTO_SHA512],[],
 786                            [AC_MSG_WARN([kernel SHA512 support is recommended by using GSS.])])
 787         LB_LINUX_CONFIG_IM([CRYPTO_WP512],[],
 788                            [AC_MSG_WARN([kernel WP512 support is recommended by using GSS.])])
 789         LB_LINUX_CONFIG_IM([CRYPTO_ARC4],[],
 790                            [AC_MSG_WARN([kernel ARC4 support is recommended by using GSS.])])
 791         LB_LINUX_CONFIG_IM([CRYPTO_DES],[],
 792                            [AC_MSG_WARN([kernel DES support is recommended by using GSS.])])
 793         LB_LINUX_CONFIG_IM([CRYPTO_TWOFISH],[],
 794                            [AC_MSG_WARN([kernel TWOFISH support is recommended by using GSS.])])
 795         LB_LINUX_CONFIG_IM([CRYPTO_CAST6],[],
 796                            [AC_MSG_WARN([kernel CAST6 support is recommended by using GSS.])])
 797
 798         AC_CHECK_LIB([gssapi], [gss_init_sec_context],
 799                      [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi"],
 800                      [AC_CHECK_LIB([gssglue], [gss_init_sec_context],
 801                                    [GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssglue"],
 802                                    [AC_MSG_ERROR([libgssapi or libgssglue is not found, which is required by GSS.])])],)
 803
 804         AC_SUBST(GSSAPI_LIBS)
 805
 806         AC_KERBEROS_V5
 807  fi
 808 ])
 809
 810 # LC_FUNC_MS_FLOCK_LOCK
 811 #
 812 # SLES9 kernel has MS_FLOCK_LOCK sb flag
 813 #
 814 AC_DEFUN([LC_FUNC_MS_FLOCK_LOCK],
 815 [AC_MSG_CHECKING([if kernel has MS_FLOCK_LOCK sb flag])
 816 LB_LINUX_TRY_COMPILE([
 817         #include <linux/fs.h>
 818 ],[
 819         int flags = MS_FLOCK_LOCK;
 820 ],[
 821         AC_DEFINE(HAVE_MS_FLOCK_LOCK, 1,
 822                 [kernel has MS_FLOCK_LOCK flag])
 823         AC_MSG_RESULT([yes])
 824 ],[
 825         AC_MSG_RESULT([no])
 826 ])
 827 ])
 828
 829 #
 830 # LC_FUNC_HAVE_CAN_SLEEP_ARG
 831 #
 832 # SLES9 kernel has third arg can_sleep
 833 # in fs/locks.c: flock_lock_file_wait()
 834 #
 835 AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
 836 [AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 837 LB_LINUX_TRY_COMPILE([
 838         #include <linux/fs.h>
 839 ],[
 840         int cansleep;
 841         struct file *file;
 842         struct file_lock *file_lock;
 843         flock_lock_file_wait(file, file_lock, cansleep);
 844 ],[
 845         AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
 846                 [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
 847         AC_MSG_RESULT([yes])
 848 ],[
 849         AC_MSG_RESULT([no])
 850 ])
 851 ])
 852
 853 #
 854 # LC_FUNC_F_OP_FLOCK
 855 #
 856 # rhel4.2 kernel has f_op->flock field
 857 #
 858 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 859 [AC_MSG_CHECKING([if struct file_operations has flock field])
 860 LB_LINUX_TRY_COMPILE([
 861         #include <linux/fs.h>
 862 ],[
 863         struct file_operations ll_file_operations_flock;
 864         ll_file_operations_flock.flock = NULL;
 865 ],[
 866         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 867                 [struct file_operations has flock field])
 868         AC_MSG_RESULT([yes])
 869 ],[
 870         AC_MSG_RESULT([no])
 871 ])
 872 ])
 873
 874 #
 875 # LC_TASK_PPTR
 876 #
 877 # task struct has p_pptr instead of parent
 878 #
 879 AC_DEFUN([LC_TASK_PPTR],
 880 [AC_MSG_CHECKING([task p_pptr found])
 881 LB_LINUX_TRY_COMPILE([
 882         #include <linux/sched.h>
 883 ],[
 884         struct task_struct *p;
 885
 886         p = p->p_pptr;
 887 ],[
 888         AC_MSG_RESULT([yes])
 889         AC_DEFINE(HAVE_TASK_PPTR, 1, [task p_pptr found])
 890 ],[
 891         AC_MSG_RESULT([no])
 892 ])
 893 ])
 894
 895 #
 896 # LC_FUNC_F_OP_FLOCK
 897 #
 898 # rhel4.2 kernel has f_op->flock field
 899 #
 900 AC_DEFUN([LC_FUNC_F_OP_FLOCK],
 901 [AC_MSG_CHECKING([if struct file_operations has flock field])
 902 LB_LINUX_TRY_COMPILE([
 903         #include <linux/fs.h>
 904 ],[
 905         struct file_operations ll_file_operations_flock;
 906         ll_file_operations_flock.flock = NULL;
 907 ],[
 908         AC_DEFINE(HAVE_F_OP_FLOCK, 1,
 909                 [struct file_operations has flock field])
 910         AC_MSG_RESULT([yes])
 911 ],[
 912         AC_MSG_RESULT([no])
 913 ])
 914 ])
 915
 916 # LC_INODE_I_MUTEX
 917 # after 2.6.15 inode have i_mutex intead of i_sem
 918 AC_DEFUN([LC_INODE_I_MUTEX],
 919 [AC_MSG_CHECKING([if inode has i_mutex ])
 920 LB_LINUX_TRY_COMPILE([
 921         #include <linux/mutex.h>
 922         #include <linux/fs.h>
 923         #undef i_mutex
 924 ],[
 925         struct inode i;
 926
 927         mutex_unlock(&i.i_mutex);
 928 ],[
 929         AC_MSG_RESULT(yes)
 930         AC_DEFINE(HAVE_INODE_I_MUTEX, 1,
 931                 [after 2.6.15 inode have i_mutex intead of i_sem])
 932 ],[
 933         AC_MSG_RESULT(no)
 934 ])
 935 ])
 936
 937 # LC_DQUOTOFF_MUTEX
 938 # after 2.6.17 dquote use mutex instead if semaphore
 939 AC_DEFUN([LC_DQUOTOFF_MUTEX],
 940 [AC_MSG_CHECKING([use dqonoff_mutex])
 941 LB_LINUX_TRY_COMPILE([
 942         #include <linux/mutex.h>
 943         #include <linux/fs.h>
 944         #include <linux/quota.h>
 945 ],[
 946         struct quota_info dq;
 947
 948         mutex_unlock(&dq.dqonoff_mutex);
 949 ],[
 950         AC_MSG_RESULT(yes)
 951         AC_DEFINE(HAVE_DQUOTOFF_MUTEX, 1,
 952                 [after 2.6.17 dquote use mutex instead if semaphore])
 953 ],[
 954         AC_MSG_RESULT(no)
 955 ])
 956 ])
 957
 958 #
 959 # LC_STATFS_DENTRY_PARAM
 960 # starting from 2.6.18 linux kernel uses dentry instead of
 961 # super_block for first vfs_statfs argument
 962 #
 963 AC_DEFUN([LC_STATFS_DENTRY_PARAM],
 964 [AC_MSG_CHECKING([first vfs_statfs parameter is dentry])
 965 LB_LINUX_TRY_COMPILE([
 966         #include <linux/fs.h>
 967 ],[
 968         int vfs_statfs(struct dentry *, struct kstatfs *);
 969 ],[
 970         AC_DEFINE(HAVE_STATFS_DENTRY_PARAM, 1,
 971                 [first parameter of vfs_statfs is dentry])
 972         AC_MSG_RESULT([yes])
 973 ],[
 974         AC_MSG_RESULT([no])
 975 ])
 976 ])
 977
 978 #
 979 # LC_VFS_KERN_MOUNT
 980 # starting from 2.6.18 kernel don't export do_kern_mount
 981 # and want to use vfs_kern_mount instead.
 982 #
 983 AC_DEFUN([LC_VFS_KERN_MOUNT],
 984 [AC_MSG_CHECKING([vfs_kern_mount exist in kernel])
 985 LB_LINUX_TRY_COMPILE([
 986         #include <linux/mount.h>
 987 ],[
 988         vfs_kern_mount(NULL, 0, NULL, NULL);
 989 ],[
 990         AC_DEFINE(HAVE_VFS_KERN_MOUNT, 1,
 991                 [vfs_kern_mount exist in kernel])
 992         AC_MSG_RESULT([yes])
 993 ],[
 994         AC_MSG_RESULT([no])
 995 ])
 996 ])
 997
 998 #
 999 # LC_INVALIDATEPAGE_RETURN_INT
1000 # more 2.6 api changes.  return type for the invalidatepage
1001 # address_space_operation is 'void' in new kernels but 'int' in old
1002 #
1003 AC_DEFUN([LC_INVALIDATEPAGE_RETURN_INT],
1004 [AC_MSG_CHECKING([invalidatepage has return int])
1005 LB_LINUX_TRY_COMPILE([
1006         #include <linux/buffer_head.h>
1007 ],[
1008         int rc = block_invalidatepage(NULL, 0);
1009 ],[
1010         AC_MSG_RESULT(yes)
1011         AC_DEFINE(HAVE_INVALIDATEPAGE_RETURN_INT, 1,
1012                 [Define if return type of invalidatepage should be int])
1013 ],[
1014         AC_MSG_RESULT(no)
1015 ])
1016 ])
1017
1018 # LC_UMOUNTBEGIN_HAS_VFSMOUNT
1019 # more 2.6 API changes. 2.6.18 umount_begin has different parameters
1020 AC_DEFUN([LC_UMOUNTBEGIN_HAS_VFSMOUNT],
1021 [AC_MSG_CHECKING([if umount_begin needs vfsmount parameter instead of super_block])
1022 tmp_flags="$EXTRA_KCFLAGS"
1023 EXTRA_KCFLAGS="-Werror"
1024 LB_LINUX_TRY_COMPILE([
1025         #include <linux/fs.h>
1026
1027         struct vfsmount;
1028         static void cfg_umount_begin (struct vfsmount *v, int flags)
1029         {
1030                 ;
1031         }
1032
1033         static struct super_operations cfg_super_operations = {
1034                 .umount_begin   = cfg_umount_begin,
1035         };
1036 ],[
1037         cfg_super_operations.umount_begin(NULL,0);
1038 ],[
1039         AC_MSG_RESULT(yes)
1040         AC_DEFINE(HAVE_UMOUNTBEGIN_VFSMOUNT, 1,
1041                 [Define umount_begin need second argument])
1042 ],[
1043         AC_MSG_RESULT(no)
1044 ])
1045 EXTRA_KCFLAGS="$tmp_flags"
1046 ])
1047
1048 # 2.6.19 API changes
1049 # inode don't have i_blksize field
1050 AC_DEFUN([LC_INODE_BLKSIZE],
1051 [AC_MSG_CHECKING([inode has i_blksize field])
1052 LB_LINUX_TRY_COMPILE([
1053 #include <linux/fs.h>
1054 ],[
1055         struct inode i;
1056         i.i_blksize = 0;
1057 ],[
1058         AC_MSG_RESULT(yes)
1059         AC_DEFINE(HAVE_INODE_BLKSIZE, 1,
1060                 [struct inode has i_blksize field])
1061 ],[
1062         AC_MSG_RESULT(no)
1063 ])
1064 ])
1065
1066 # LC_VFS_READDIR_U64_INO
1067 # 2.6.19 use u64 for inode number instead of inode_t
1068 AC_DEFUN([LC_VFS_READDIR_U64_INO],
1069 [AC_MSG_CHECKING([check vfs_readdir need 64bit inode number])
1070 tmp_flags="$EXTRA_KCFLAGS"
1071 EXTRA_KCFLAGS="-Werror"
1072 LB_LINUX_TRY_COMPILE([
1073 #include <linux/fs.h>
1074         int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
1075                       u64 ino, unsigned int d_type)
1076         {
1077                 return 0;
1078         }
1079 ],[
1080         filldir_t filter;
1081
1082         filter = fillonedir;
1083         return 1;
1084 ],[
1085         AC_MSG_RESULT(yes)
1086         AC_DEFINE(HAVE_VFS_READDIR_U64_INO, 1,
1087                 [if vfs_readdir need 64bit inode number])
1088 ],[
1089         AC_MSG_RESULT(no)
1090 ])
1091 EXTRA_KCFLAGS="$tmp_flags"
1092 ])
1093
1094 # LC_FILE_WRITEV
1095 # 2.6.19 replaced writev with aio_write
1096 AC_DEFUN([LC_FILE_WRITEV],
1097 [AC_MSG_CHECKING([writev in fops])
1098 LB_LINUX_TRY_COMPILE([
1099         #include <linux/fs.h>
1100 ],[
1101         struct file_operations *fops;
1102         fops->writev = NULL;
1103 ],[
1104         AC_MSG_RESULT(yes)
1105         AC_DEFINE(HAVE_FILE_WRITEV, 1,
1106                 [use fops->writev])
1107 ],[
1108         AC_MSG_RESULT(no)
1109 ])
1110 ])
1111
1112 # LC_GENERIC_FILE_READ
1113 # 2.6.19 replaced readv with aio_read
1114 AC_DEFUN([LC_FILE_READV],
1115 [AC_MSG_CHECKING([readv in fops])
1116 LB_LINUX_TRY_COMPILE([
1117         #include <linux/fs.h>
1118 ],[
1119         struct file_operations *fops;
1120         fops->readv = NULL;
1121 ],[
1122         AC_MSG_RESULT(yes)
1123         AC_DEFINE(HAVE_FILE_READV, 1,
1124                 [use fops->readv])
1125 ],[
1126         AC_MSG_RESULT(no)
1127 ])
1128 ])
1129
1130 # LC_NR_PAGECACHE
1131 # 2.6.18 don't export nr_pagecahe
1132 AC_DEFUN([LC_NR_PAGECACHE],
1133 [AC_MSG_CHECKING([kernel export nr_pagecache])
1134 LB_LINUX_TRY_COMPILE([
1135         #include <linux/pagemap.h>
1136 ],[
1137         return atomic_read(&nr_pagecache);
1138 ],[
1139         AC_MSG_RESULT(yes)
1140         AC_DEFINE(HAVE_NR_PAGECACHE, 1,
1141                 [is kernel export nr_pagecache])
1142 ],[
1143         AC_MSG_RESULT(no)
1144 ])
1145 ])
1146
1147 # LC_CANCEL_DIRTY_PAGE
1148 # 2.6.20 introduse cancel_dirty_page instead of
1149 # clear_page_dirty.
1150 AC_DEFUN([LC_CANCEL_DIRTY_PAGE],
1151 [AC_MSG_CHECKING([kernel has cancel_dirty_page])
1152 LB_LINUX_TRY_COMPILE([
1153         #include <linux/mm.h>
1154         #include <linux/page-flags.h>
1155 ],[
1156         cancel_dirty_page(NULL, 0);
1157 ],[
1158         AC_MSG_RESULT(yes)
1159         AC_DEFINE(HAVE_CANCEL_DIRTY_PAGE, 1,
1160                   [kernel has cancel_dirty_page instead of clear_page_dirty])
1161 ],[
1162         AC_MSG_RESULT(no)
1163 ])
1164 ])
1165
1166 #
1167 # LC_PAGE_CONSTANT
1168 #
1169 # In order to support raid5 zerocopy patch, we have to patch the kernel to make
1170 # it support constant page, which means the page won't be modified during the
1171 # IO.
1172 #
1173 AC_DEFUN([LC_PAGE_CONSTANT],
1174 [AC_MSG_CHECKING([if kernel have PageConstant defined])
1175 LB_LINUX_TRY_COMPILE([
1176         #include <linux/mm.h>
1177         #include <linux/page-flags.h>
1178 ],[
1179         #ifndef PG_constant
1180         #error "Have no raid5 zcopy patch"
1181         #endif
1182 ],[
1183         AC_MSG_RESULT(yes)
1184         AC_DEFINE(HAVE_PAGE_CONSTANT, 1, [kernel have PageConstant supported])
1185 ],[
1186         AC_MSG_RESULT(no);
1187 ])
1188 ])
1189
1190 # RHEL5 in FS-cache patch rename PG_checked flag
1191 # into PG_fs_misc
1192 AC_DEFUN([LC_PG_FS_MISC],
1193 [AC_MSG_CHECKING([kernel has PG_fs_misc])
1194 LB_LINUX_TRY_COMPILE([
1195         #include <linux/mm.h>
1196         #include <linux/page-flags.h>
1197 ],[
1198         #ifndef PG_fs_misc
1199         #error PG_fs_misc not defined in kernel
1200         #endif
1201 ],[
1202         AC_MSG_RESULT(yes)
1203         AC_DEFINE(HAVE_PG_FS_MISC, 1,
1204                   [is kernel have PG_fs_misc])
1205 ],[
1206         AC_MSG_RESULT(no)
1207 ])
1208 ])
1209
1210 # RHEL5 PageChecked and SetPageChecked defined
1211 AC_DEFUN([LC_PAGE_CHECKED],
1212 [AC_MSG_CHECKING([kernel has PageChecked and SetPageChecked])
1213 LB_LINUX_TRY_COMPILE([
1214         #include <linux/mm.h>
1215         #include <linux/page-flags.h>
1216 ],[
1217         #ifndef PageChecked
1218         #error PageChecked not defined in kernel
1219         #endif
1220         #ifndef SetPageChecked
1221         #error SetPageChecked not defined in kernel
1222         #endif
1223 ],[
1224         AC_MSG_RESULT(yes)
1225         AC_DEFINE(HAVE_PAGE_CHECKED, 1,
1226                   [does kernel have PageChecked and SetPageChecked])
1227 ],[
1228         AC_MSG_RESULT(no)
1229 ])
1230 ])
1231
1232 AC_DEFUN([LC_EXPORT_TRUNCATE_COMPLETE],
1233 [LB_CHECK_SYMBOL_EXPORT([truncate_complete_page],
1234 [mm/truncate.c],[
1235 AC_DEFINE(HAVE_TRUNCATE_COMPLETE_PAGE, 1,
1236             [kernel export truncate_complete_page])
1237 ],[
1238 ])
1239 ])
1240
1241 AC_DEFUN([LC_EXPORT_D_REHASH_COND],
1242 [LB_CHECK_SYMBOL_EXPORT([d_rehash_cond],
1243 [fs/dcache.c],[
1244 AC_DEFINE(HAVE_D_REHASH_COND, 1,
1245             [d_rehash_cond is exported by the kernel])
1246 ],[
1247 ])
1248 ])
1249
1250 AC_DEFUN([LC_EXPORT___D_REHASH],
1251 [LB_CHECK_SYMBOL_EXPORT([__d_rehash],
1252 [fs/dcache.c],[
1253 AC_DEFINE(HAVE___D_REHASH, 1,
1254             [__d_rehash is exported by the kernel])
1255 ],[
1256 ])
1257 ])
1258
1259 AC_DEFUN([LC_EXPORT_D_MOVE_LOCKED],
1260 [LB_CHECK_SYMBOL_EXPORT([d_move_locked],
1261 [fs/dcache.c],[
1262 AC_DEFINE(HAVE_D_MOVE_LOCKED, 1,
1263             [d_move_locked is exported by the kernel])
1264 ],[
1265 ])
1266 ])
1267
1268 AC_DEFUN([LC_EXPORT___D_MOVE],
1269 [LB_CHECK_SYMBOL_EXPORT([__d_move],
1270 [fs/dcache.c],[
1271 AC_DEFINE(HAVE___D_MOVE, 1,
1272             [__d_move is exported by the kernel])
1273 ],[
1274 ])
1275 ])
1276
1277 #
1278 # LC_EXPORT_INVALIDATE_MAPPING_PAGES
1279 #
1280 # SLES9, RHEL4, RHEL5, vanilla 2.6.24 export invalidate_mapping_pages() but
1281 # SLES10 2.6.16 does not, for some reason.  For filter cache invalidation.
1282 #
1283 AC_DEFUN([LC_EXPORT_INVALIDATE_MAPPING_PAGES],
1284     [LB_CHECK_SYMBOL_EXPORT([invalidate_mapping_pages], [mm/truncate.c], [
1285          AC_DEFINE(HAVE_INVALIDATE_MAPPING_PAGES, 1,
1286                         [exported invalidate_mapping_pages])],
1287     [LB_CHECK_SYMBOL_EXPORT([invalidate_inode_pages], [mm/truncate.c], [
1288          AC_DEFINE(HAVE_INVALIDATE_INODE_PAGES, 1,
1289                         [exported invalidate_inode_pages])], [
1290        AC_MSG_ERROR([no way to invalidate pages])
1291   ])
1292     ],[])
1293 ])
1294
1295 #
1296 # LC_EXPORT_FILEMAP_FDATASYNC_RANGE
1297 #
1298 # No standard kernels export this
1299 #
1300 AC_DEFUN([LC_EXPORT_FILEMAP_FDATAWRITE_RANGE],
1301 [LB_CHECK_SYMBOL_EXPORT([filemap_fdatawrite_range],
1302 [mm/filemap.c],[
1303 AC_DEFINE(HAVE_FILEMAP_FDATAWRITE_RANGE, 1,
1304             [filemap_fdatawrite_range is exported by the kernel])
1305 ],[
1306 ])
1307 ])
1308
1309 # The actual symbol exported varies among architectures, so we need
1310 # to check many symbols (but only in the current architecture.)  No
1311 # matter what symbol is exported, the kernel #defines node_to_cpumask
1312 # to the appropriate function and that's what we use.
1313 AC_DEFUN([LC_EXPORT_NODE_TO_CPUMASK],
1314          [LB_CHECK_SYMBOL_EXPORT([node_to_cpumask],
1315                                  [arch/$LINUX_ARCH/mm/numa.c],
1316                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1317                                             [node_to_cpumask is exported by
1318                                              the kernel])]) # x86_64
1319           LB_CHECK_SYMBOL_EXPORT([node_to_cpu_mask],
1320                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1321                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1322                                             [node_to_cpumask is exported by
1323                                              the kernel])]) # ia64
1324           LB_CHECK_SYMBOL_EXPORT([node_2_cpu_mask],
1325                                  [arch/$LINUX_ARCH/kernel/smpboot.c],
1326                                  [AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1,
1327                                             [node_to_cpumask is exported by
1328                                              the kernel])]) # i386
1329           ])
1330
1331 # 2.6.22 lost second parameter for invalidate_bdev
1332 AC_DEFUN([LC_INVALIDATE_BDEV_2ARG],
1333 [AC_MSG_CHECKING([if invalidate_bdev has second argument])
1334 LB_LINUX_TRY_COMPILE([
1335         #include <linux/buffer_head.h>
1336 ],[
1337         invalidate_bdev(NULL,0);
1338 ],[
1339         AC_MSG_RESULT([yes])
1340         AC_DEFINE(HAVE_INVALIDATE_BDEV_2ARG, 1,
1341                 [invalidate_bdev has second argument])
1342 ],[
1343         AC_MSG_RESULT([no])
1344 ])
1345 ])
1346
1347 # 2.6.23 have return type 'void' for unregister_blkdev
1348 AC_DEFUN([LC_UNREGISTER_BLKDEV_RETURN_INT],
1349 [AC_MSG_CHECKING([if unregister_blkdev return int])
1350 LB_LINUX_TRY_COMPILE([
1351         #include <linux/fs.h>
1352 ],[
1353         int i = unregister_blkdev(0,NULL);
1354 ],[
1355         AC_MSG_RESULT([yes])
1356         AC_DEFINE(HAVE_UNREGISTER_BLKDEV_RETURN_INT, 1,
1357                 [unregister_blkdev return int])
1358 ],[
1359         AC_MSG_RESULT([no])
1360 ])
1361 ])
1362
1363 # 2.6.23 change .sendfile to .splice_read
1364 AC_DEFUN([LC_KERNEL_SPLICE_READ],
1365 [AC_MSG_CHECKING([if kernel has .splice_read])
1366 LB_LINUX_TRY_COMPILE([
1367         #include <linux/fs.h>
1368 ],[
1369         struct file_operations file;
1370
1371         file.splice_read = NULL;
1372 ], [
1373         AC_MSG_RESULT([yes])
1374         AC_DEFINE(HAVE_KERNEL_SPLICE_READ, 1,
1375                 [kernel has .slice_read])
1376 ],[
1377         AC_MSG_RESULT([no])
1378 ])
1379 ])
1380
1381 # 2.6.23 extract nfs export related data into exportfs.h
1382 AC_DEFUN([LC_HAVE_EXPORTFS_H],
1383 [
1384 tmpfl="$CFLAGS"
1385 CFLAGS="$CFLAGS -I$LINUX_OBJ/include"
1386 AC_CHECK_HEADERS([linux/exportfs.h])
1387 CFLAGS="$tmpfl"
1388 ])
1389
1390 #
1391 # LC_VFS_INTENT_PATCHES
1392 #
1393 # check if the kernel has the VFS intent patches
1394 AC_DEFUN([LC_VFS_INTENT_PATCHES],
1395 [AC_MSG_CHECKING([if the kernel has the VFS intent patches])
1396 LB_LINUX_TRY_COMPILE([
1397         #include <linux/fs.h>
1398         #include <linux/namei.h>
1399 ],[
1400         struct nameidata nd;
1401         struct lookup_intent *it;
1402
1403         it = &nd.intent;
1404         intent_init(it, IT_OPEN);
1405         it->d.lustre.it_disposition = 0;
1406         it->d.lustre.it_data = NULL;
1407 ],[
1408         AC_MSG_RESULT([yes])
1409         AC_DEFINE(HAVE_VFS_INTENT_PATCHES, 1, [VFS intent patches are applied])
1410 ],[
1411         AC_MSG_RESULT([no])
1412 ])
1413 ])
1414
1415 AC_DEFUN([LC_S_TIME_GRAN],
1416 [AC_MSG_CHECKING([if super block has s_time_gran member])
1417 LB_LINUX_TRY_COMPILE([
1418         #include <linux/fs.h>
1419 ],[
1420         struct super_block sb;
1421
1422         return sb.s_time_gran;
1423 ],[
1424         AC_MSG_RESULT([yes])
1425         AC_DEFINE(HAVE_S_TIME_GRAN, 1, [super block has s_time_gran member])
1426 ],[
1427         AC_MSG_RESULT([no])
1428 ])
1429 ])
1430
1431 AC_DEFUN([LC_SB_TIME_GRAN],
1432 [AC_MSG_CHECKING([if kernel has old get_sb_time_gran])
1433 LB_LINUX_TRY_COMPILE([
1434         #include <linux/fs.h>
1435 ],[
1436         return get_sb_time_gran(NULL);
1437 ],[
1438         AC_MSG_RESULT([yes])
1439         AC_DEFINE(HAVE_SB_TIME_GRAN, 1, [kernel has old get_sb_time_gran])
1440 ],[
1441         AC_MSG_RESULT([no])
1442 ])
1443 ])
1444
1445
1446 # ~2.6.12 merge patch from oracle to convert tree_lock from spinlock to rwlock
1447 AC_DEFUN([LC_RW_TREE_LOCK],
1448 [AC_MSG_CHECKING([if kernel has tree_lock as rwlock])
1449 tmp_flags="$EXTRA_KCFLAGS"
1450 EXTRA_KCFLAGS="-Werror"
1451 LB_LINUX_TRY_COMPILE([
1452         #include <linux/fs.h>
1453 ],[
1454         struct address_space a;
1455
1456         write_lock(&a.tree_lock);
1457 ],[
1458         AC_MSG_RESULT([yes])
1459         AC_DEFINE(HAVE_RW_TREE_LOCK, 1, [kernel has tree_lock as rw_lock])
1460 ],[
1461         AC_MSG_RESULT([no])
1462 ])
1463 EXTRA_KCFLAGS="$tmp_flags"
1464 ])
1465
1466 AC_DEFUN([LC_CONST_ACL_SIZE],
1467 [AC_MSG_CHECKING([calc acl size])
1468 tmp_flags="$CFLAGS"
1469 CFLAGS="$CFLAGS -I $LINUX_OBJ/include $EXTRA_KCFLAGS"
1470 AC_TRY_RUN([
1471 #define __KERNEL__
1472 #include <linux/autoconf.h>
1473 #include <linux/types.h>
1474 #undef __KERNEL__
1475 // block include
1476 #define __LINUX_POSIX_ACL_H
1477
1478 # ifdef CONFIG_FS_POSIX_ACL
1479 #  ifdef HAVE_XATTR_ACL
1480 #   include <linux/xattr_acl.h>
1481 #  endif
1482 #  ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
1483 #   include <linux/posix_acl_xattr.h>
1484 #  endif
1485 # endif
1486
1487 #include <lustre_acl.h>
1488
1489 #include <stdio.h>
1490
1491 int main(void)
1492 {
1493     int size = mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES);
1494     FILE *f = fopen("acl.size","w+");
1495     fprintf(f,"%d", size);
1496     fclose(f);
1497
1498     return 0;
1499 }
1500
1501 ],[
1502         acl_size=`cat acl.size`
1503         AC_MSG_RESULT([ACL size $acl_size])
1504         AC_DEFINE_UNQUOTED(XATTR_ACL_SIZE, AS_TR_SH([$acl_size]), [size of xattr acl])
1505 ],[
1506         AC_ERROR([ACL size can't computed])
1507 ])
1508 CFLAGS="$tmp_flags"
1509 ])
1510
1511 #
1512 # check for crypto API
1513 #
1514 AC_DEFUN([LC_ASYNC_BLOCK_CIPHER],
1515 [AC_MSG_CHECKING([if kernel has block cipher support])
1516 LB_LINUX_TRY_COMPILE([
1517         #include <linux/crypto.h>
1518 ],[
1519         int v = CRYPTO_ALG_TYPE_BLKCIPHER;
1520 ],[
1521         AC_MSG_RESULT([yes])
1522         AC_DEFINE(HAVE_ASYNC_BLOCK_CIPHER, 1, [kernel has block cipher support])
1523 ],[
1524         AC_MSG_RESULT([no])
1525 ])
1526 ])
1527
1528 #
1529 # check for FS_RENAME_DOES_D_MOVE flag
1530 #
1531 AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
1532 [AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
1533 LB_LINUX_TRY_COMPILE([
1534         #include <linux/fs.h>
1535 ],[
1536         int v = FS_RENAME_DOES_D_MOVE;
1537 ],[
1538         AC_MSG_RESULT([yes])
1539         AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
1540 ],[
1541         AC_MSG_RESULT([no])
1542 ])
1543 ])
1544
1545 #
1546 # LC_PROG_LINUX
1547 #
1548 # Lustre linux kernel checks
1549 #
1550 AC_DEFUN([LC_PROG_LINUX],
1551          [LC_LUSTRE_VERSION_H
1552          if test x$enable_server = xyes ; then
1553              AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])
1554              LC_CONFIG_BACKINGFS
1555          fi
1556          LC_CONFIG_PINGER
1557          LC_CONFIG_CHECKSUM
1558          LC_CONFIG_LIBLUSTRE_RECOVERY
1559          LC_CONFIG_HEALTH_CHECK_WRITE
1560          LC_CONFIG_LRU_RESIZE
1561          LC_QUOTA_MODULE
1562
1563          LC_TASK_PPTR
1564          # RHEL4 patches
1565          LC_EXPORT_TRUNCATE_COMPLETE
1566          LC_EXPORT_D_REHASH_COND
1567          LC_EXPORT___D_REHASH
1568          LC_EXPORT_D_MOVE_LOCKED
1569          LC_EXPORT___D_MOVE
1570          LC_EXPORT_NODE_TO_CPUMASK
1571
1572          LC_STRUCT_KIOBUF
1573          LC_FUNC_COND_RESCHED
1574          LC_FUNC_RELEASEPAGE_WITH_INT
1575          LC_FUNC_ZAP_PAGE_RANGE
1576          LC_FUNC_PDE
1577          LC_FUNC_DIRECT_IO
1578          LC_HEADER_MM_INLINE
1579          LC_STRUCT_INODE
1580          LC_FUNC_REGISTER_CACHE
1581          LC_FUNC_GRAB_CACHE_PAGE_NOWAIT_GFP
1582          LC_FUNC_DEV_SET_RDONLY
1583          LC_FUNC_FILEMAP_FDATAWRITE
1584          LC_STRUCT_STATFS
1585          LC_FUNC_PAGE_MAPPED
1586          LC_STRUCT_FILE_OPS_UNLOCKED_IOCTL
1587          LC_FILEMAP_POPULATE
1588          LC_D_ADD_UNIQUE
1589          LC_BIT_SPINLOCK_H
1590
1591          LC_XATTR_ACL
1592          LC_POSIX_ACL_XATTR_H
1593          LC_CONST_ACL_SIZE
1594
1595          LC_STRUCT_INTENT_FILE
1596
1597          LC_FUNC_SET_FS_PWD
1598          LC_CAPA_CRYPTO
1599          LC_CONFIG_RMTCLIENT
1600          LC_CONFIG_GSS
1601          LC_FUNC_MS_FLOCK_LOCK
1602          LC_FUNC_HAVE_CAN_SLEEP_ARG
1603          LC_FUNC_F_OP_FLOCK
1604          LC_QUOTA_READ
1605          LC_COOKIE_FOLLOW_LINK
1606          LC_FUNC_RCU
1607          LC_PERCPU_COUNTER
1608          LC_QUOTA64
1609
1610          # does the kernel have VFS intent patches?
1611          LC_VFS_INTENT_PATCHES
1612
1613          # ~2.6.11
1614          LC_S_TIME_GRAN
1615          LC_SB_TIME_GRAN
1616
1617          # 2.6.12
1618          LC_RW_TREE_LOCK
1619
1620          # 2.6.15
1621          LC_INODE_I_MUTEX
1622
1623          # 2.6.16
1624          LC_SECURITY_PLUG  # for SLES10 SP2
1625
1626          # 2.6.17
1627          LC_DQUOTOFF_MUTEX
1628
1629          # 2.6.18
1630          LC_NR_PAGECACHE
1631          LC_STATFS_DENTRY_PARAM
1632          LC_VFS_KERN_MOUNT
1633          LC_INVALIDATEPAGE_RETURN_INT
1634          LC_UMOUNTBEGIN_HAS_VFSMOUNT
1635          if test x$enable_server = xyes ; then
1636                 LC_EXPORT_INVALIDATE_MAPPING_PAGES
1637                 LC_EXPORT_FILEMAP_FDATAWRITE_RANGE
1638          fi
1639
1640          #2.6.18 + RHEL5 (fc6)
1641          LC_PG_FS_MISC
1642          LC_PAGE_CHECKED
1643
1644          # 2.6.19
1645          LC_INODE_BLKSIZE
1646          LC_VFS_READDIR_U64_INO
1647          LC_FILE_WRITEV
1648          LC_FILE_READV
1649
1650          # 2.6.20
1651          LC_CANCEL_DIRTY_PAGE
1652
1653          # raid5-zerocopy patch
1654          LC_PAGE_CONSTANT
1655
1656          # 2.6.22
1657          LC_INVALIDATE_BDEV_2ARG
1658          LC_ASYNC_BLOCK_CIPHER
1659          LC_FS_RENAME_DOES_D_MOVE
1660          # 2.6.23
1661          LC_UNREGISTER_BLKDEV_RETURN_INT
1662          LC_KERNEL_SPLICE_READ
1663          LC_HAVE_EXPORTFS_H
1664 ])
1665
1666 #
1667 # LC_CONFIG_CLIENT_SERVER
1668 #
1669 # Build client/server sides of Lustre
1670 #
1671 AC_DEFUN([LC_CONFIG_CLIENT_SERVER],
1672 [AC_MSG_CHECKING([whether to build Lustre server support])
1673 AC_ARG_ENABLE([server],
1674         AC_HELP_STRING([--disable-server],
1675                         [disable Lustre server support]),
1676         [],[enable_server='yes'])
1677 AC_MSG_RESULT([$enable_server])
1678
1679 AC_MSG_CHECKING([whether to build Lustre client support])
1680 AC_ARG_ENABLE([client],
1681         AC_HELP_STRING([--disable-client],
1682                         [disable Lustre client support]),
1683         [],[enable_client='yes'])
1684 AC_MSG_RESULT([$enable_client])])
1685
1686 #
1687 # LC_CONFIG_LIBLUSTRE
1688 #
1689 # whether to build liblustre
1690 #
1691 AC_DEFUN([LC_CONFIG_LIBLUSTRE],
1692 [AC_MSG_CHECKING([whether to build Lustre library])
1693 AC_ARG_ENABLE([liblustre],
1694         AC_HELP_STRING([--disable-liblustre],
1695                         [disable building of Lustre library]),
1696         [],[enable_liblustre=$with_sysio])
1697 AC_MSG_RESULT([$enable_liblustre])
1698 # only build sysio if liblustre is built
1699 with_sysio="$enable_liblustre"
1700
1701 AC_MSG_CHECKING([whether to build liblustre tests])
1702 AC_ARG_ENABLE([liblustre-tests],
1703         AC_HELP_STRING([--enable-liblustre-tests],
1704                         [enable liblustre tests, if --disable-tests is used]),
1705         [],[enable_liblustre_tests=$enable_tests])
1706 if test x$enable_liblustre != xyes ; then
1707    enable_liblustre_tests='no'
1708 fi
1709 AC_MSG_RESULT([$enable_liblustre_tests])
1710
1711 AC_MSG_CHECKING([whether to enable liblustre acl])
1712 AC_ARG_ENABLE([liblustre-acl],
1713         AC_HELP_STRING([--disable-liblustre-acl],
1714                         [disable ACL support for liblustre]),
1715         [],[enable_liblustre_acl=yes])
1716 AC_MSG_RESULT([$enable_liblustre_acl])
1717 if test x$enable_liblustre_acl = xyes ; then
1718   AC_DEFINE(LIBLUSTRE_POSIX_ACL, 1, Liblustre Support ACL-enabled MDS)
1719 fi
1720
1721 #
1722 # --enable-mpitest
1723 #
1724 AC_ARG_ENABLE(mpitests,
1725         AC_HELP_STRING([--enable-mpitest=yes|no|mpich directory],
1726                            [include mpi tests]),
1727         [
1728          enable_mpitests=yes
1729          case $enableval in
1730          yes)
1731                 MPI_ROOT=/opt/mpich
1732                 LDFLAGS="$LDFLAGS -L$MPI_ROOT/ch-p4/lib -L$MPI_ROOT/ch-p4/lib64"
1733                 CFLAGS="$CFLAGS -I$MPI_ROOT/include"
1734                 ;;
1735          no)
1736                 enable_mpitests=no
1737                 ;;
1738          [[\\/$]]* | ?:[[\\/]]* )
1739                 MPI_ROOT=$enableval
1740                 LDFLAGS="$LDFLAGS -L$with_mpi/lib"
1741                 CFLAGS="$CFLAGS -I$MPI_ROOT/include"
1742                 ;;
1743          *)
1744                  AC_MSG_ERROR([expected absolute directory name for --enable-mpitests or yes or no])
1745                  ;;
1746          esac
1747         ],
1748         [
1749         MPI_ROOT=/opt/mpich
1750         LDFLAGS="$LDFLAGS -L$MPI_ROOT/ch-p4/lib -L$MPI_ROOT/ch-p4/lib64"
1751         CFLAGS="$CFLAGS -I$MPI_ROOT/include"
1752         enable_mpitests=yes
1753         ]
1754 )
1755 AC_SUBST(MPI_ROOT)
1756
1757 if test x$enable_mpitests != xno; then
1758         AC_MSG_CHECKING([whether to mpitests can be built])
1759         AC_CHECK_FILE([$MPI_ROOT/include/mpi.h],
1760                       [AC_CHECK_LIB([mpich],[MPI_Start],[enable_mpitests=yes],[enable_mpitests=no])],
1761                       [enable_mpitests=no])
1762 fi
1763 AC_MSG_RESULT([$enable_mpitests])
1764
1765
1766 AC_MSG_NOTICE([Enabling Lustre configure options for libsysio])
1767 ac_configure_args="$ac_configure_args --with-lustre-hack --with-sockets"
1768
1769 LC_CONFIG_PINGER
1770 LC_CONFIG_LIBLUSTRE_RECOVERY
1771 ])
1772
1773 AC_DEFUN([LC_CONFIG_LRU_RESIZE],
1774 [AC_MSG_CHECKING([whether to enable lru self-adjusting])
1775 AC_ARG_ENABLE([lru_resize],
1776         AC_HELP_STRING([--enable-lru-resize],
1777                         [enable lru resize support]),
1778         [],[enable_lru_resize='yes'])
1779 AC_MSG_RESULT([$enable_lru_resize])
1780 if test x$enable_lru_resize != xno; then
1781    AC_DEFINE(HAVE_LRU_RESIZE_SUPPORT, 1, [Enable lru resize support])
1782 fi
1783 ])
1784
1785 #
1786 # LC_CONFIG_QUOTA
1787 #
1788 # whether to enable quota support global control
1789 #
1790 AC_DEFUN([LC_CONFIG_QUOTA],
1791 [AC_ARG_ENABLE([quota],
1792         AC_HELP_STRING([--enable-quota],
1793                         [enable quota support]),
1794         [],[enable_quota='yes'])
1795 ])
1796
1797 # whether to enable quota support(kernel modules)
1798 AC_DEFUN([LC_QUOTA_MODULE],
1799 [if test x$enable_quota != xno; then
1800     LB_LINUX_CONFIG([QUOTA],[
1801         enable_quota_module='yes'
1802         AC_DEFINE(HAVE_QUOTA_SUPPORT, 1, [Enable quota support])
1803     ],[
1804         enable_quota_module='no'
1805         AC_MSG_WARN([quota is not enabled because the kernel - lacks quota support])
1806     ])
1807 fi
1808 ])
1809
1810 AC_DEFUN([LC_QUOTA],
1811 [#check global
1812 LC_CONFIG_QUOTA
1813 #check for utils
1814 AC_CHECK_HEADER(sys/quota.h,
1815                 [AC_DEFINE(HAVE_SYS_QUOTA_H, 1, [Define to 1 if you have <sys/quota.h>.])],
1816                 [AC_MSG_ERROR([don't find <sys/quota.h> in your system])])
1817 ])
1818
1819 AC_DEFUN([LC_QUOTA_READ],
1820 [AC_MSG_CHECKING([if kernel supports quota_read])
1821 LB_LINUX_TRY_COMPILE([
1822         #include <linux/fs.h>
1823 ],[
1824         struct super_operations sp;
1825         void *i = (void *)sp.quota_read;
1826 ],[
1827         AC_MSG_RESULT([yes])
1828         AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
1829 ],[
1830         AC_MSG_RESULT([no])
1831 ])
1832 ])
1833
1834 #
1835 # LC_CONFIG_SPLIT
1836 #
1837 # whether to enable split support
1838 #
1839 AC_DEFUN([LC_CONFIG_SPLIT],
1840 [AC_MSG_CHECKING([whether to enable split support])
1841 AC_ARG_ENABLE([split],
1842         AC_HELP_STRING([--enable-split],
1843                         [enable split support]),
1844         [],[enable_split='no'])
1845 AC_MSG_RESULT([$enable_split])
1846 if test x$enable_split != xno; then
1847    AC_DEFINE(HAVE_SPLIT_SUPPORT, 1, [enable split support])
1848 fi
1849 ])
1850
1851 #
1852 # LC_COOKIE_FOLLOW_LINK
1853 #
1854 # kernel 2.6.13+ ->follow_link returns a cookie
1855 #
1856
1857 AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
1858 [AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
1859 LB_LINUX_TRY_COMPILE([
1860         #include <linux/fs.h>
1861         #include <linux/namei.h>
1862 ],[
1863         struct dentry dentry;
1864         struct nameidata nd;
1865
1866         dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
1867 ],[
1868         AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
1869         AC_MSG_RESULT([yes])
1870 ],[
1871         AC_MSG_RESULT([no])
1872 ])
1873 ])
1874
1875 #
1876 # LC_FUNC_RCU
1877 #
1878 # kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
1879 # call_rcu takes three parameters.
1880 #
1881 AC_DEFUN([LC_FUNC_RCU],
1882 [AC_MSG_CHECKING([if kernel have RCU supported])
1883 LB_LINUX_TRY_COMPILE([
1884         #include <linux/rcupdate.h>
1885 ],[],[
1886         AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
1887         AC_MSG_RESULT([yes])
1888
1889         AC_MSG_CHECKING([if call_rcu takes three parameters])
1890         LB_LINUX_TRY_COMPILE([
1891                 #include <linux/rcupdate.h>
1892         ],[
1893                 struct rcu_head rh;
1894                 call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
1895         ],[
1896                 AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
1897                 AC_MSG_RESULT([yes])
1898         ],[
1899                 AC_MSG_RESULT([no])
1900         ])
1901 ],[
1902         AC_MSG_RESULT([no])
1903 ])
1904 ])
1905
1906 # LC_SECURITY_PLUG  # for SLES10 SP2
1907 # check security plug in sles10 sp2 kernel
1908 AC_DEFUN([LC_SECURITY_PLUG],
1909 [AC_MSG_CHECKING([If kernel has security plug support])
1910 LB_LINUX_TRY_COMPILE([
1911         #include <linux/fs.h>
1912 ],[
1913         struct dentry   *dentry;
1914         struct vfsmount *mnt;
1915         struct iattr    *iattr;
1916
1917         notify_change(dentry, mnt, iattr);
1918 ],[
1919         AC_MSG_RESULT(yes)
1920         AC_DEFINE(HAVE_SECURITY_PLUG, 1,
1921                 [SLES10 SP2 use extra parameter in vfs])
1922 ],[
1923         AC_MSG_RESULT(no)
1924 ])
1925 ])
1926
1927 AC_DEFUN([LC_PERCPU_COUNTER],
1928 [AC_MSG_CHECKING([if have struct percpu_counter defined])
1929 LB_LINUX_TRY_COMPILE([
1930         #include <linux/percpu_counter.h>
1931 ],[],[
1932         AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
1933         AC_MSG_RESULT([yes])
1934
1935         AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
1936         LB_LINUX_TRY_COMPILE([
1937                 #include <linux/percpu_counter.h>
1938         ],[
1939                 struct percpu_counter c;
1940                 percpu_counter_init(&c, 0);
1941         ],[
1942                 AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
1943                                                    arguments])
1944                 AC_MSG_RESULT([yes])
1945         ],[
1946                 AC_MSG_RESULT([no])
1947         ])
1948 ],[
1949         AC_MSG_RESULT([no])
1950 ])
1951 ])
1952
1953 #
1954 # LC_QUOTA64
1955 # linux kernel have 64-bit limits support
1956 #
1957 AC_DEFUN([LC_QUOTA64],
1958 [if test x$enable_quota_module = xyes; then
1959         AC_MSG_CHECKING([if kernel has 64-bit quota limits support])
1960         LB_LINUX_TRY_COMPILE([
1961                 #include <linux/kernel.h>
1962                 #include <linux/fs.h>
1963                 #include <linux/quotaio_v2.h>
1964                 int versions[] = V2_INITQVERSIONS_R1;
1965                 struct v2_disk_dqblk_r1 dqblk_r1;
1966         ],[],[
1967                 AC_DEFINE(HAVE_QUOTA64, 1, [have quota64])
1968                 AC_MSG_RESULT([yes])
1969         ],[
1970                 LB_CHECK_FILE([$LINUX/include/linux/lustre_version.h],[
1971                         if test x$enable_server = xyes ; then
1972                                 AC_MSG_ERROR([You have got no 64-bit kernel quota support.])
1973                         fi
1974                 ],[])
1975                 AC_MSG_RESULT([no])
1976         ])
1977 fi
1978 ])
1979
1980 #
1981 # LC_CONFIGURE
1982 #
1983 # other configure checks
1984 #
1985 AC_DEFUN([LC_CONFIGURE],
1986 [LC_CONFIG_OBD_BUFFER_SIZE
1987
1988 if test $target_cpu == "i686" -o $target_cpu == "x86_64"; then
1989         CFLAGS="$CFLAGS -Werror"
1990 fi
1991
1992 # include/liblustre.h
1993 AC_CHECK_HEADERS([sys/user.h sys/vfs.h stdint.h blkid/blkid.h])
1994
1995 # liblustre/llite_lib.h
1996 AC_CHECK_HEADERS([xtio.h file.h])
1997
1998 # liblustre/dir.c
1999 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
2000
2001 # liblustre/lutil.c
2002 AC_CHECK_HEADERS([netinet/in.h arpa/inet.h catamount/data.h])
2003 AC_CHECK_FUNCS([inet_ntoa])
2004
2005 # libsysio/src/readlink.c
2006 LC_READLINK_SSIZE_T
2007
2008 # lvfs/prng.c - depends on linux/types.h from liblustre/dir.c
2009 AC_CHECK_HEADERS([linux/random.h], [], [],
2010                  [#ifdef HAVE_LINUX_TYPES_H
2011                   # include <linux/types.h>
2012                   #endif
2013                  ])
2014
2015 # utils/llverfs.c
2016 AC_CHECK_HEADERS([ext2fs/ext2fs.h])
2017
2018 # check for -lz support
2019 ZLIB=""
2020 AC_CHECK_LIB([z],
2021              [adler32],
2022              [AC_CHECK_HEADERS([zlib.h],
2023                                [ZLIB="-lz"
2024                                 AC_DEFINE([HAVE_ADLER], 1,
2025                                           [support alder32 checksum type])],
2026                                [AC_MSG_WARN([No zlib-devel package found,
2027                                              unable to use adler32 checksum])])],
2028              [AC_MSG_WARN([No zlib package found, unable to use adler32 checksum])]
2029 )
2030 AC_SUBST(ZLIB)
2031
2032 # Super safe df
2033 AC_ARG_ENABLE([mindf],
2034       AC_HELP_STRING([--enable-mindf],
2035                       [Make statfs report the minimum available space on any single OST instead of the sum of free space on all OSTs]),
2036       [],[])
2037 if test "$enable_mindf" = "yes" ;  then
2038       AC_DEFINE([MIN_DF], 1, [Report minimum OST free space])
2039 fi
2040
2041 AC_ARG_ENABLE([fail_alloc],
2042         AC_HELP_STRING([--disable-fail-alloc],
2043                 [disable randomly alloc failure]),
2044         [],[enable_fail_alloc=yes])
2045 AC_MSG_CHECKING([whether to randomly failing memory alloc])
2046 AC_MSG_RESULT([$enable_fail_alloc])
2047 if test x$enable_fail_alloc != xno ; then
2048         AC_DEFINE([RANDOM_FAIL_ALLOC], 1, [enable randomly alloc failure])
2049 fi
2050
2051 AC_ARG_ENABLE([invariants],
2052         AC_HELP_STRING([--enable-invariants],
2053                 [enable invariant checking (cpu intensive)]),
2054         [],[])
2055 AC_MSG_CHECKING([whether to check invariants (expensive cpu-wise)])
2056 AC_MSG_RESULT([$enable_invariants])
2057 if test x$enable_invariants = xyes ; then
2058         AC_DEFINE([INVARIANT_CHECK], 1, [enable invariant checking])
2059 fi
2060
2061 AC_ARG_ENABLE([lu_ref],
2062         AC_HELP_STRING([--enable-lu_ref],
2063                 [enable lu_ref reference tracking code]),
2064         [],[])
2065 AC_MSG_CHECKING([whether to track references with lu_ref])
2066 AC_MSG_RESULT([$enable_lu_ref])
2067 if test x$enable_lu_ref = xyes ; then
2068         AC_DEFINE([USE_LU_REF], 1, [enable lu_ref reference tracking code])
2069 fi
2070
2071 ])
2072
2073 #
2074 # LC_CONDITIONALS
2075 #
2076 # AM_CONDITIONALS for lustre
2077 #
2078 AC_DEFUN([LC_CONDITIONALS],
2079 [AM_CONDITIONAL(LIBLUSTRE, test x$enable_liblustre = xyes)
2080 AM_CONDITIONAL(USE_QUILT, test x$QUILT != xno)
2081 AM_CONDITIONAL(LIBLUSTRE_TESTS, test x$enable_liblustre_tests = xyes)
2082 AM_CONDITIONAL(MPITESTS, test x$enable_mpitests = xyes, Build MPI Tests)
2083 AM_CONDITIONAL(CLIENT, test x$enable_client = xyes)
2084 AM_CONDITIONAL(SERVER, test x$enable_server = xyes)
2085 AM_CONDITIONAL(QUOTA, test x$enable_quota_module = xyes)
2086 AM_CONDITIONAL(SPLIT, test x$enable_split = xyes)
2087 AM_CONDITIONAL(BLKID, test x$ac_cv_header_blkid_blkid_h = xyes)
2088 AM_CONDITIONAL(EXT2FS_DEVEL, test x$ac_cv_header_ext2fs_ext2fs_h = xyes)
2089 AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
2090 AM_CONDITIONAL(GSS_KEYRING, test x$enable_gss_keyring = xyes)
2091 AM_CONDITIONAL(GSS_PIPEFS, test x$enable_gss_pipefs = xyes)
2092 AM_CONDITIONAL(LIBPTHREAD, test x$enable_libpthread = xyes)
2093 ])
2094
2095 #
2096 # LC_CONFIG_FILES
2097 #
2098 # files that should be generated with AC_OUTPUT
2099 #
2100 AC_DEFUN([LC_CONFIG_FILES],
2101 [AC_CONFIG_FILES([
2102 lustre/Makefile
2103 lustre/autoMakefile
2104 lustre/autoconf/Makefile
2105 lustre/contrib/Makefile
2106 lustre/doc/Makefile
2107 lustre/include/Makefile
2108 lustre/include/lustre_ver.h
2109 lustre/include/linux/Makefile
2110 lustre/include/lustre/Makefile
2111 lustre/kernel_patches/targets/2.6-vanilla.target
2112 lustre/kernel_patches/targets/2.6-rhel4.target
2113 lustre/kernel_patches/targets/2.6-rhel5.target
2114 lustre/kernel_patches/targets/2.6-fc5.target
2115 lustre/kernel_patches/targets/2.6-patchless.target
2116 lustre/kernel_patches/targets/2.6-sles10.target
2117 lustre/ldlm/Makefile
2118 lustre/fid/Makefile
2119 lustre/fid/autoMakefile
2120 lustre/liblustre/Makefile
2121 lustre/liblustre/tests/Makefile
2122 lustre/llite/Makefile
2123 lustre/llite/autoMakefile
2124 lustre/lclient/Makefile
2125 lustre/lov/Makefile
2126 lustre/lov/autoMakefile
2127 lustre/lvfs/Makefile
2128 lustre/lvfs/autoMakefile
2129 lustre/mdc/Makefile
2130 lustre/mdc/autoMakefile
2131 lustre/lmv/Makefile
2132 lustre/lmv/autoMakefile
2133 lustre/mds/Makefile
2134 lustre/mds/autoMakefile
2135 lustre/mdt/Makefile
2136 lustre/mdt/autoMakefile
2137 lustre/cmm/Makefile
2138 lustre/cmm/autoMakefile
2139 lustre/mdd/Makefile
2140 lustre/mdd/autoMakefile
2141 lustre/fld/Makefile
2142 lustre/fld/autoMakefile
2143 lustre/obdclass/Makefile
2144 lustre/obdclass/autoMakefile
2145 lustre/obdclass/linux/Makefile
2146 lustre/obdecho/Makefile
2147 lustre/obdecho/autoMakefile
2148 lustre/obdfilter/Makefile
2149 lustre/obdfilter/autoMakefile
2150 lustre/osc/Makefile
2151 lustre/osc/autoMakefile
2152 lustre/ost/Makefile
2153 lustre/ost/autoMakefile
2154 lustre/osd/Makefile
2155 lustre/osd/autoMakefile
2156 lustre/mgc/Makefile
2157 lustre/mgc/autoMakefile
2158 lustre/mgs/Makefile
2159 lustre/mgs/autoMakefile
2160 lustre/ptlrpc/Makefile
2161 lustre/ptlrpc/autoMakefile
2162 lustre/ptlrpc/gss/Makefile
2163 lustre/ptlrpc/gss/autoMakefile
2164 lustre/quota/Makefile
2165 lustre/quota/autoMakefile
2166 lustre/scripts/Makefile
2167 lustre/scripts/version_tag.pl
2168 lustre/tests/Makefile
2169 lustre/utils/Makefile
2170 lustre/utils/gss/Makefile
2171 ])
2172 case $lb_target_os in
2173         darwin)
2174                 AC_CONFIG_FILES([ lustre/obdclass/darwin/Makefile ])
2175                 ;;
2176 esac
2177
2178 ])