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LU-709 build: remove old userspace-OSS configure
[fs/lustre-release.git] / build / autoconf / lustre-build.m4
1 #
2 # LB_CHECK_VERSION
3 #
4 # Verify that LUSTRE_VERSION was defined properly
5 #
6 AC_DEFUN([LB_CHECK_VERSION],
7 [if test "LUSTRE_VERSION" = "LUSTRE""_VERSION" ; then
8         AC_MSG_ERROR([This script was not built with a version number.])
9 fi
10 ])
11
12 #
13 # LB_CANONICAL_SYSTEM
14 #
15 # fixup $target_os for use in other places
16 #
17 AC_DEFUN([LB_CANONICAL_SYSTEM],
18 [case $target_os in
19         linux*)
20                 lb_target_os="linux"
21                 ;;
22         darwin*)
23                 lb_target_os="darwin"
24                 ;;
25         solaris*)
26                 lb_target_os="SunOS"
27                 ;;esac
28 AC_SUBST(lb_target_os)
29 ])
30
31 #
32 # LB_DOWNSTREAM_RELEASE
33 #
34 AC_DEFUN([LB_DOWNSTREAM_RELEASE],
35 [AC_ARG_WITH([downstream-release],
36         AC_HELP_STRING([--with-downstream-release=string],
37                        [set a string in the BUILD_VERSION and RPM Release: (default is nothing)]),
38         [DOWNSTREAM_RELEASE=$with_downstream_release],
39         [
40         # if not specified, see if it's in the META file
41         if test -f META; then
42                 DOWNSTREAM_RELEASE=$(sed -ne '/^LOCAL_VERSION =/s/.*= *//p' META)
43         fi
44         ])
45 AC_SUBST(DOWNSTREAM_RELEASE)
46 ])
47
48 #
49 # LB_BUILDID
50 #
51 # Check if the source is a GA release and if not, set a "BUILDID"
52 #
53 # Currently there are at least two ways/modes of/for doing this.  One
54 # is if we are in a valid git repository, the other is if we are in a
55 # non-git source tree of some form.  Building the latter from the former
56 # will be handled here.
57 AC_DEFUN([LB_BUILDID],
58 [
59 AC_MSG_CHECKING([for buildid])
60 BUILDID=""
61 if git branch >/dev/null 2>&1; then
62         ffw=0
63         hash=""
64         ver=$(git describe --match v[[0-9]]_*_[[0-9]]* --tags)
65         if [[[ $ver = *-*-* ]]]; then
66                 hash=${ver##*-}
67                 ffw=${ver#*-}
68                 ffw=${ffw%-*}
69                 ver=${ver%%-*}
70         fi
71         # it's tempting to use [[ $ver =~ ^v([0-9]+_)+([0-9]+|RC[0-9]+)$ ]]
72         # here but the portability of the regex on the right is dismal
73         # (thanx suse)
74         if echo "$ver" | egrep -q "^v([[0-9]]+_)+([[0-9]]+|RC[[0-9]]+)$"; then
75                 ver=$(echo $ver | sed -e 's/^v\(.*\)/\1/' \
76                                       -e 's/_RC[[0-9]].*$//' -e 's/_/./g')
77         fi
78
79         # a "lustre fix" value of .0 should be truncated
80         if [[[ $ver = *.*.*.0 ]]]; then
81                 ver=${ver%.0}
82         fi
83         # ditto for a "lustre fix" value of _0
84         if [[[ $ver = v*_*_*_0 ]]]; then
85                 ver=${ver%_0}
86         fi
87         if [[[ $ver = v*_*_* ]]]; then
88                 ver=${ver#v}
89                 ver=${ver//_/.}
90         fi
91
92         # only do this test for lustre (not ldiskfs)
93         if test "$PACKAGE" = "lustre" -a "$ver" != "$VERSION"; then
94                 AC_MSG_WARN([most recent tag found: $ver does not match current version $VERSION.])
95         fi
96
97         if test "$ffw" != "0"; then
98                 BUILDID="$hash"
99                 msg="$BUILDID (ahead by $ffw commits)"
100                 AC_MSG_RESULT([$msg])
101         else
102                 AC_MSG_RESULT([none... congratulations, you must be on a tag])
103         fi
104 elif test -f META; then
105         BUILDID=$(sed -ne '/^BUILDID =/s/.*= *//p' META)
106         msg="$BUILDID (from META file)"
107         AC_MSG_RESULT([$msg])
108 else
109         AC_MSG_WARN([FIXME: I don't know how to deal with source trees outside of git that don't have a META file.  Not setting a buildid.])
110 fi
111 AC_SUBST(BUILDID)
112 ])
113
114 #
115 # LB_CHECK_FILE
116 #
117 # Check for file existance even when cross compiling
118 #
119 AC_DEFUN([LB_CHECK_FILE],
120 [AS_VAR_PUSHDEF([lb_File], [lb_cv_file_$1])dnl
121 AC_CACHE_CHECK([for $1], lb_File,
122 [if test -r "$1"; then
123         AS_VAR_SET(lb_File, yes)
124 else
125         AS_VAR_SET(lb_File, no)
126 fi])
127 AS_IF([test AS_VAR_GET(lb_File) = yes], [$2], [$3])[]dnl
128 AS_VAR_POPDEF([lb_File])dnl
129 ])# LB_CHECK_FILE
130
131
132 #
133 # LB_ARG_LIBS_INCLUDES
134 #
135 # support for --with-foo, --with-foo-includes, and --with-foo-libs in
136 # a single magical macro
137 #
138 AC_DEFUN([LB_ARG_LIBS_INCLUDES],
139 [lb_pathvar="m4_bpatsubst([$2], -, _)"
140 AC_MSG_CHECKING([for $1])
141 AC_ARG_WITH([$2],
142         AC_HELP_STRING([--with-$2=path],
143                 [path to $1]),
144         [],[withval=$4])
145
146 if test x$withval = xyes ; then
147         eval "$lb_pathvar='$3'"
148 else
149         eval "$lb_pathvar='$withval'"
150 fi
151 AC_MSG_RESULT([${!lb_pathvar:-no}])
152
153 if test x${!lb_pathvar} != x -a x${!lb_pathvar} != xno ; then
154         AC_MSG_CHECKING([for $1 includes])
155         AC_ARG_WITH([$2-includes],
156                 AC_HELP_STRING([--with-$2-includes=path],
157                         [path to $1 includes]),
158                 [],[withval='yes'])
159
160         lb_includevar="${lb_pathvar}_includes"
161         if test x$withval = xyes ; then
162                 eval "${lb_includevar}='${!lb_pathvar}/include'"
163         else
164                 eval "${lb_includevar}='$withval'"
165         fi
166         AC_MSG_RESULT([${!lb_includevar}])
167
168         AC_MSG_CHECKING([for $1 libs])
169         AC_ARG_WITH([$2-libs],
170                 AC_HELP_STRING([--with-$2-libs=path],
171                         [path to $1 libs]),
172                 [],[withval='yes'])
173
174         lb_libvar="${lb_pathvar}_libs"
175         if test x$withval = xyes ; then
176                 eval "${lb_libvar}='${!lb_pathvar}/lib'"
177         else
178                 eval "${lb_libvar}='$withval'"
179         fi
180         AC_MSG_RESULT([${!lb_libvar}])
181 fi
182 ])
183 ])
184
185 #
186 # LB_PATH_LIBSYSIO
187 #
188 # Handle internal/external libsysio
189 #
190 AC_DEFUN([LB_PATH_LIBSYSIO],
191 [AC_ARG_WITH([sysio],
192         AC_HELP_STRING([--with-sysio=path],
193                         [set path to libsysio source (default is included libsysio)]),
194         [],[
195                 case $lb_target_os in
196                         linux)
197                                 with_sysio='yes'
198                                 ;;
199                         *)
200                                 with_sysio='no'
201                                 ;;
202                 esac
203         ])
204 AC_MSG_CHECKING([location of libsysio])
205 enable_sysio="$with_sysio"
206 case x$with_sysio in
207         xyes)
208                 AC_MSG_RESULT([internal])
209                 LB_CHECK_FILE([$srcdir/libsysio/src/rmdir.c],[],[
210                         AC_MSG_ERROR([A complete internal libsysio was not found.])
211                 ])
212                 LIBSYSIO_SUBDIR="libsysio"
213                 SYSIO="$PWD/libsysio"
214                 ;;
215         xno)
216                 AC_MSG_RESULT([disabled])
217                 ;;
218         *)
219                 AC_MSG_RESULT([$with_sysio])
220                 LB_CHECK_FILE([$with_sysio/lib/libsysio.a],[],[
221                         AC_MSG_ERROR([A complete (built) external libsysio was not found.])
222                 ])
223                 SYSIO=$with_sysio
224                 with_sysio="yes"
225                 ;;
226 esac
227
228 # We have to configure even if we don't build here for make dist to work
229 AC_CONFIG_SUBDIRS(libsysio)
230 ])
231
232 #
233 # LB_PATH_LUSTREIOKIT
234 #
235 # Handle internal/external lustre-iokit
236 #
237 AC_DEFUN([LB_PATH_LUSTREIOKIT],
238 [AC_ARG_WITH([lustre-iokit],
239         AC_HELP_STRING([--with-lustre-iokit=path],
240                         [set path to lustre-iokit source (default is included lustre-iokit)]),
241         [],[
242                         with_lustre_iokit='yes'
243         ])
244 AC_MSG_CHECKING([location of lustre-iokit])
245 enable_lustre_iokit="$with_lustre_iokit"
246 case x$with_lustre_iokit in
247         xyes)
248                 AC_MSG_RESULT([internal])
249                 LB_CHECK_FILE([$srcdir/lustre-iokit/ior-survey/ior-survey],[],[
250                         AC_MSG_ERROR([A complete internal lustre-iokit was not found.])
251                 ])
252                 LUSTREIOKIT_SUBDIR="lustre-iokit"
253                 LUSTREIOKIT="$PWD/lustre-iokit"
254                 ;;
255         xno)
256                 AC_MSG_RESULT([disabled])
257                 ;;
258         *)
259                 AC_MSG_RESULT([$with_lustre_iokit])
260                 LB_CHECK_FILE([$with_lustre_iokit/ior-survey/ior_survey],[],[
261                         AC_MSG_ERROR([A complete (built) external lustre-iokit was not found.])
262                 ])
263                 LUSTREIOKIT="$with_lustre_iokit"
264                 ;;
265 esac
266 AC_SUBST(LUSTREIOKIT_SUBDIR)
267 # We have to configure even if we don't build here for make dist to work
268 AC_CONFIG_SUBDIRS(lustre-iokit)
269 ])
270
271 # Define no libcfs by default.
272 AC_DEFUN([LB_LIBCFS_DIR],
273 [
274 case x$libcfs_is_module in
275         xyes)
276           LIBCFS_INCLUDE_DIR="libcfs/include"
277           LIBCFS_SUBDIR="libcfs"
278           ;;
279         x*)
280           LIBCFS_INCLUDE_DIR="lnet/include"
281           LIBCFS_SUBDIR=""
282           ;;
283 esac
284 AC_SUBST(LIBCFS_SUBDIR)
285 AC_SUBST(LIBCFS_INCLUDE_DIR)
286 ])
287
288 #
289 # LB_CONFIG_BGL
290 #
291 # Enable BGL features
292 #
293 AC_DEFUN([LB_CONFIG_BGL],
294 [AC_MSG_CHECKING([whether to build BGL features])
295 AC_ARG_ENABLE([bgl],
296         AC_HELP_STRING([--enable-bgl],
297                         [enable building of BGL features]),
298         [enable_bgl='yes'],[enable_bgl='no'])
299 AC_MSG_RESULT([$enable_bgl])
300 if test x$enable_bgl != xno; then
301         AC_DEFINE(HAVE_BGL_SUPPORT, 1, Enable BGL Features)
302         enable_doc='no'
303         enable_tests='no'
304         enable_server='no'
305         enable_liblustre='no'
306         enable_libreadline='no'
307 fi
308 ])
309
310 #
311 # LB_PATH_SNMP
312 #
313 # check for in-tree snmp support
314 #
315 AC_DEFUN([LB_PATH_SNMP],
316 [LB_CHECK_FILE([$srcdir/snmp/lustre-snmp.c],[SNMP_DIST_SUBDIR="snmp"])
317 AC_SUBST(SNMP_DIST_SUBDIR)
318 AC_SUBST(SNMP_SUBDIR)
319 ])
320
321 #
322 # LB_CONFIG_MODULES
323 #
324 # Build kernel modules?
325 #
326 AC_DEFUN([LB_CONFIG_MODULES],
327 [AC_MSG_CHECKING([whether to build kernel modules])
328 AC_ARG_ENABLE([modules],
329         AC_HELP_STRING([--disable-modules],
330                         [disable building of Lustre kernel modules]),
331         [],[
332                 LC_TARGET_SUPPORTED([
333                         enable_modules='yes'
334                 ],[
335                         enable_modules='no'
336                 ])
337         ])
338 AC_MSG_RESULT([$enable_modules ($target_os)])
339
340 if test x$enable_modules = xyes ; then
341         case $target_os in
342                 linux*)
343                         LB_PROG_LINUX
344                         LIBCFS_PROG_LINUX
345                         LN_PROG_LINUX
346                         LC_PROG_LINUX
347                         ;;
348                 darwin*)
349                         LB_PROG_DARWIN
350                         LIBCFS_PROG_DARWIN
351                         ;;
352                 *)
353                         # This is strange - Lustre supports a target we don't
354                         AC_MSG_ERROR([Modules are not supported on $target_os])
355                         ;;
356         esac
357 fi
358 ])
359
360 #
361 # LB_CONFIG_UTILS
362 #
363 # Build utils?
364 #
365 AC_DEFUN([LB_CONFIG_UTILS],
366 [AC_MSG_CHECKING([whether to build utilities])
367 AC_ARG_ENABLE([utils],
368         AC_HELP_STRING([--disable-utils],
369                         [disable building of Lustre utility programs]),
370         [],[enable_utils='yes'])
371 AC_MSG_RESULT([$enable_utils])
372 if test x$enable_utils = xyes ; then 
373         LB_CONFIG_INIT_SCRIPTS
374 fi
375 ])
376
377 #
378 # LB_CONFIG_TESTS
379 #
380 # Build tests?
381 #
382 AC_DEFUN([LB_CONFIG_TESTS],
383 [AC_MSG_CHECKING([whether to build Lustre tests])
384 AC_ARG_ENABLE([tests],
385         AC_HELP_STRING([--disable-tests],
386                         [disable building of Lustre tests]),
387         [],
388         [
389                 enable_tests='yes'
390         ])
391 AC_MSG_RESULT([$enable_tests])
392 ])
393
394 #
395 # LB_CONFIG_DIST
396 #
397 # Just enough configure so that "make dist" is useful
398 #
399 # this simply re-adjusts some defaults, which of course can be overridden
400 # on the configure line after the --for-dist option
401 #
402 AC_DEFUN([LB_CONFIG_DIST],
403 [AC_MSG_CHECKING([whether to configure just enough for make dist])
404 AC_ARG_ENABLE([dist],
405         AC_HELP_STRING([--enable-dist],
406                         [only configure enough for make dist]),
407         [enable_dist='yes'],[enable_dist='no'])
408 AC_MSG_RESULT([$enable_dist])
409 if test x$enable_dist != xno; then
410         enable_modules='no'
411         enable_utils='no'
412         enable_liblustre='no'
413         enable_doc='no'
414         enable_tests='no'
415 fi
416 ])
417
418 #
419 # LB_CONFIG_DOCS
420 #
421 # Build docs?
422 #
423 AC_DEFUN([LB_CONFIG_DOCS],
424 [AC_MSG_CHECKING([whether to build docs])
425 AC_ARG_ENABLE(doc,
426         AC_HELP_STRING([--disable-doc],
427                         [skip creation of pdf documentation]),
428         [
429                 if test x$enable_doc = xyes ; then
430                     ENABLE_DOC=1
431                 else
432                     ENABLE_DOC=0
433                 fi
434         ],[
435                 ENABLE_DOC=0
436                 enable_doc='no'
437         ])
438 AC_MSG_RESULT([$enable_doc])
439 AC_SUBST(ENABLE_DOC)
440 ])
441
442 #
443 # LB_CONFIG_INIT_SCRIPTS
444 #
445 # our init scripts only work on red hat linux
446 #
447 AC_DEFUN([LB_CONFIG_INIT_SCRIPTS],
448 [ENABLE_INIT_SCRIPTS=0
449 if test x$enable_utils = xyes ; then
450         AC_MSG_CHECKING([whether to install init scripts])
451         # our scripts only work on red hat systems
452         if test -f /etc/init.d/functions -a -f /etc/sysconfig/network ; then
453                 ENABLE_INIT_SCRIPTS=1
454                 AC_MSG_RESULT([yes])
455         else
456                 AC_MSG_RESULT([no])
457         fi
458 fi
459 AC_SUBST(ENABLE_INIT_SCRIPTS)
460 ])
461
462 #
463 # LB_CONFIG_HEADERS
464 #
465 # add -include config.h
466 #
467 AC_DEFUN([LB_CONFIG_HEADERS],[
468         AC_CONFIG_HEADERS([config.h])
469         CPPFLAGS="-include $PWD/config.h $CPPFLAGS"
470         EXTRA_KCFLAGS="-include $PWD/config.h $EXTRA_KCFLAGS"
471         AC_SUBST(EXTRA_KCFLAGS)
472 ])
473
474 #
475 # LB_INCLUDE_RULES
476 #
477 # defines for including the toplevel Rules
478 #
479 AC_DEFUN([LB_INCLUDE_RULES],[
480         INCLUDE_RULES="include $PWD/Rules"
481         AC_SUBST(INCLUDE_RULES)
482 ])
483
484 #
485 # LB_PATH_DEFAULTS
486 #
487 # 'fixup' default paths
488 #
489 AC_DEFUN([LB_PATH_DEFAULTS],
490 [# directories for binaries
491 AC_PREFIX_DEFAULT([/usr])
492
493 sysconfdir='/etc'
494 AC_SUBST(sysconfdir)
495
496 # Directories for documentation and demos.
497 docdir='${datadir}/doc/$(PACKAGE)'
498 AC_SUBST(docdir)
499
500 LIBCFS_PATH_DEFAULTS
501 LN_PATH_DEFAULTS
502 LC_PATH_DEFAULTS
503
504 ])
505
506 #
507 # LB_PROG_CC
508 #
509 # checks on the C compiler
510 #
511 AC_DEFUN([LB_PROG_CC],
512 [AC_PROG_RANLIB
513
514 # ---------  unsigned long long sane? -------
515 AC_CHECK_SIZEOF(unsigned long long, 0)
516 echo "---> size SIZEOF $SIZEOF_unsigned_long_long"
517 echo "---> size SIZEOF $ac_cv_sizeof_unsigned_long_long"
518 if test $ac_cv_sizeof_unsigned_long_long != 8 ; then
519         AC_MSG_ERROR([** we assume that sizeof(long long) == 8.])
520 fi
521
522 if test $target_cpu == "powerpc64"; then
523         AC_MSG_WARN([set compiler with -m64])
524         CFLAGS="$CFLAGS -m64"
525         CC="$CC -m64"
526 fi
527
528 CPPFLAGS="-I$PWD/$LIBCFS_INCLUDE_DIR -I$PWD/lnet/include -I$PWD/lustre/include $CPPFLAGS"
529
530 LLCPPFLAGS="-D__arch_lib__ -D_LARGEFILE64_SOURCE=1"
531 AC_SUBST(LLCPPFLAGS)
532
533 # Add _GNU_SOURCE for strnlen on linux
534 LLCFLAGS="-g -Wall -fPIC -D_GNU_SOURCE"
535 AC_SUBST(LLCFLAGS)
536
537 CCASFLAGS="-Wall -fPIC -D_GNU_SOURCE"
538 AC_SUBST(CCASFLAGS)
539
540 # everyone builds against lnet and lustre
541 EXTRA_KCFLAGS="$EXTRA_KCFLAGS -g -I$PWD/$LIBCFS_INCLUDE_DIR -I$PWD/lnet/include -I$PWD/lustre/include"
542 AC_SUBST(EXTRA_KCFLAGS)
543 ])
544
545 #
546 # LB_CONTITIONALS
547 #
548 # AM_CONDITIONAL instances for everything
549 # (so that portals/lustre can disable some if needed)
550 AC_DEFUN([LB_CONDITIONALS],
551 [AM_CONDITIONAL(MODULES, test x$enable_modules = xyes)
552 AM_CONDITIONAL(UTILS, test x$enable_utils = xyes)
553 AM_CONDITIONAL(TESTS, test x$enable_tests = xyes)
554 AM_CONDITIONAL(DOC, test x$ENABLE_DOC = x1)
555 AM_CONDITIONAL(INIT_SCRIPTS, test x$ENABLE_INIT_SCRIPTS = "x1")
556 AM_CONDITIONAL(LINUX, test x$lb_target_os = "xlinux")
557 AM_CONDITIONAL(DARWIN, test x$lb_target_os = "xdarwin")
558 AM_CONDITIONAL(SUNOS, test x$lb_target_os = "xSunOS")
559 AM_CONDITIONAL(USES_DPKG, test x$uses_dpkg = "xyes")
560 AM_CONDITIONAL(ARCH_x86, test x$target_cpu = "xx86_64" -o x$target_cpu = "xi686")
561
562 # this lets lustre cancel libsysio, per-branch or if liblustre is
563 # disabled
564 if test "x$LIBSYSIO_SUBDIR" = xlibsysio ; then
565         if test "x$with_sysio" != xyes ; then
566                 SYSIO=""
567                 LIBSYSIO_SUBDIR=""
568         fi
569 fi
570 AC_SUBST(LIBSYSIO_SUBDIR)
571 AC_SUBST(SYSIO)
572
573 LB_DARWIN_CONDITIONALS
574
575 LIBCFS_CONDITIONALS
576 LN_CONDITIONALS
577 LC_CONDITIONALS
578 ])
579
580 #
581 # LB_CONFIG_FILES
582 #
583 # build-specific config files
584 #
585 AC_DEFUN([LB_CONFIG_FILES],
586 [
587         AC_CONFIG_FILES([
588                 Makefile
589                 autoMakefile]
590                 [Rules:build/Rules.in]
591                 AC_PACKAGE_TARNAME[.spec]
592         )
593 ])
594
595 #
596 # LB_CONFIGURE
597 #
598 # main configure steps
599 #
600 AC_DEFUN([LB_CONFIGURE],
601 [LB_CANONICAL_SYSTEM
602
603 LB_CONFIG_DIST
604
605 LB_DOWNSTREAM_RELEASE
606 LB_USES_DPKG
607 LB_BUILDID
608
609 LB_LIBCFS_DIR
610
611 LB_INCLUDE_RULES
612
613 LB_CONFIG_BGL
614 LB_PATH_DEFAULTS
615
616 LB_PROG_CC
617
618 LC_OSD_ADDON
619
620 LB_CONFIG_DOCS
621 LB_CONFIG_UTILS
622 LB_CONFIG_TESTS
623 LC_CONFIG_CLIENT_SERVER
624
625 # two macros for cmd3
626 m4_ifdef([LC_CONFIG_SPLIT], [LC_CONFIG_SPLIT])
627 LN_CONFIG_CDEBUG
628 LC_QUOTA
629
630 LB_CONFIG_MODULES
631 LN_CONFIG_USERSPACE
632
633 LB_PATH_LIBSYSIO
634 LB_PATH_SNMP
635 LB_PATH_LDISKFS
636 LB_PATH_ZFS
637 LB_PATH_LUSTREIOKIT
638
639 LB_DEFINE_E2FSPROGS_NAMES
640
641 LC_CONFIG_LIBLUSTRE
642 LIBCFS_CONFIGURE
643 LN_CONFIGURE
644
645 LC_CONFIGURE
646
647 if test "$SNMP_DIST_SUBDIR" ; then
648         LS_CONFIGURE
649 fi
650
651
652 LB_CONDITIONALS
653 LB_CONFIG_HEADERS
654
655 LIBCFS_CONFIG_FILES
656 LB_CONFIG_FILES
657 LN_CONFIG_FILES
658 LC_CONFIG_FILES
659 if test "$SNMP_DIST_SUBDIR" ; then
660         LS_CONFIG_FILES
661 fi
662
663 AC_SUBST(ac_configure_args)
664
665 MOSTLYCLEANFILES='.*.cmd .*.flags *.o *.ko *.mod.c .depend .*.1.* Modules.symvers Module.symvers'
666 AC_SUBST(MOSTLYCLEANFILES)
667
668 AC_OUTPUT
669
670 cat <<_ACEOF
671
672 CC:            $CC
673 LD:            $LD
674 CPPFLAGS:      $CPPFLAGS
675 LLCPPFLAGS:    $LLCPPFLAGS
676 CFLAGS:        $CFLAGS
677 EXTRA_KCFLAGS: $EXTRA_KCFLAGS
678 LLCFLAGS:      $LLCFLAGS
679
680 Type 'make' to build Lustre.
681 _ACEOF
682 ])