4 # Set things accordingly for a linux kernel
6 AC_DEFUN([LB_LINUX_VERSION], [
11 AC_CACHE_CHECK([for external module build target], lb_cv_module_target,
13 lb_cv_module_target=""
14 MODULE_TARGET="SUBDIRS"
15 rm -f build/conftest.i
16 LB_LINUX_TRY_MAKE([], [],
17 [$makerule LUSTRE_KERNEL_TEST=conftest.i],
18 [test -s build/conftest.i],
19 [lb_cv_module_target="SUBDIRS"],[
21 makerule="$PWD/build/"
22 LB_LINUX_TRY_MAKE([], [],
23 [$makerule LUSTRE_KERNEL_TEST=conftest.i],
24 [test -s build/conftest.i],
25 [lb_cv_module_target="M54"], [
27 makerule="_module_$PWD/build"
28 LB_LINUX_TRY_MAKE([], [],
29 [$makerule LUSTRE_KERNEL_TEST=conftest.i],
30 [test -s build/conftest.i],
31 [lb_cv_module_target="M"], [
34 LB_LINUX_TRY_MAKE([], [],
35 [$makerule LUSTRE_KERNEL_TEST=conftest.i],
36 [test -s build/conftest.i],
37 [lb_cv_module_target="M58"], [
38 AC_MSG_ERROR([kernel module make failed; check config.log for details])
41 AS_IF([test -z "$lb_cv_module_target"],
42 [AC_MSG_ERROR([unknown external module build target])],
43 [test "x$lb_cv_module_target" = "xM54"],
44 [makerule="$PWD/build"
45 lb_cv_module_target="M"],
46 [test "x$lb_cv_module_target" = "xM58"],
48 lb_cv_module_target="M"],
49 [test "x$lb_cv_module_target" = "xM"],
50 [makerule="_module_$PWD/build"])
51 MODULE_TARGET=$lb_cv_module_target
52 AC_SUBST(MODULE_TARGET)
58 # Determine the Linux kernel version string from the utsrelease
60 AC_DEFUN([LB_LINUX_UTSRELEASE], [
61 AC_CACHE_CHECK([for Linux kernel utsrelease], lb_cv_utsrelease, [
63 utsrelease1=$LINUX_OBJ/include/generated/utsrelease.h
64 utsrelease2=$LINUX_OBJ/include/linux/utsrelease.h
65 utsrelease3=$LINUX_OBJ/include/linux/version.h
66 AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1],
67 [utsrelease=$utsrelease1],
68 [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2],
69 [utsrelease=$utsrelease2],
70 [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3],
71 [utsrelease=$utsrelease3])
72 AS_IF([test -n "$utsrelease"],
73 [lb_cv_utsrelease=$(awk -F \" '/ UTS_RELEASE / { print [$]2 }' $utsrelease)],
76 Cannot find UTS_RELEASE definition.
78 This is often provided by the kernel-devel package.
82 AS_IF([test -z "$lb_cv_utsrelease"],
83 [AC_MSG_ERROR([Cannot determine Linux kernel version.])])
84 LINUXRELEASE=$lb_cv_utsrelease
85 AC_SUBST(LINUXRELEASE)
91 # get the release version of linux
93 AC_DEFUN([LB_LINUX_RELEASE], [
96 # Define default states
101 # And if any of the above kernels has been detected yet
104 # Check for RedHat first (no need to check KERNEL_FOUND
105 AC_CACHE_CHECK([for RedHat kernel release number], lb_cv_rhel_kernel_version, [
106 lb_cv_rhel_kernel_version=""
107 AS_IF([fgrep -q RHEL_RELEASE $LINUX_OBJ/include/$VERSION_HDIR/version.h], [
108 lb_cv_rhel_kernel_version=$(awk '/ RHEL_MAJOR / { print [$]3 }' \
109 $LINUX_OBJ/include/$VERSION_HDIR/version.h)$(awk \
110 '/ RHEL_MINOR / { print [$]3 }' \
111 $LINUX_OBJ/include/$VERSION_HDIR/version.h)
114 AS_IF([test -n "$lb_cv_rhel_kernel_version"], [
117 RHEL_RELEASE_NO=$lb_cv_rhel_kernel_version
121 AS_IF([test "x$KERNEL_FOUND" = "xno"], [
122 LB_CHECK_CONFIG([SUSE_KERNEL], [
129 AS_IF([test "x$KERNEL_FOUND" = "xno"], [
130 AC_CACHE_CHECK([for Ubuntu kernel signature], lb_cv_ubuntu_kernel_sig, [
131 lb_cv_ubuntu_kernel_sig="no"
132 AS_IF([fgrep -q "CONFIG_VERSION_SIGNATURE \"Ubuntu" $LINUX_OBJ/include/generated/autoconf.h], [
133 lb_cv_ubuntu_kernel_sig="yes"
136 AS_IF([test "x$lb_cv_ubuntu_kernel_sig" = "xyes"], [
143 AS_IF([test "x$KERNEL_FOUND" = "xno"], [
144 AC_CACHE_CHECK([for Debian kernel signature], lb_cv_debian_kernel_sig, [
145 lb_cv_debian_kernel_sig="no"
146 AS_IF([grep -q "LINUX_PACKAGE_ID\s*\"\s*Debian" $LINUX_OBJ/include/generated/package.h], [
147 lb_cv_debian_kernel_sig="yes"
150 AS_IF([test "x$lb_cv_debian_kernel_sig" = "xyes"], [
156 # Check for a ELRepo -ml kernel on RHEL 7/8
157 AS_IF([test "x$KERNEL_FOUND" = "xno"], [
158 AC_CACHE_CHECK([for ELRepo -ml kernel signature on CentOS],
159 lb_cv_mainline_kernel_sig, [
160 lb_cv_mainline_kernel_sig="no"
161 AS_IF([fgrep -q '.el7.' $LINUX_OBJ/include/generated/utsrelease.h], [
162 lb_cv_mainline_kernel_sig="yes"
164 AS_IF([fgrep -q '.el8.' $LINUX_OBJ/include/generated/utsrelease.h], [
165 lb_cv_mainline_kernel_sig="yes"
168 AS_IF([test "x$lb_cv_mainline_kernel_sig" = "xyes"], [
174 # If still no kernel was found, a warning is issued
175 AS_IF([test "x$KERNEL_FOUND" = "xno"], [
176 AC_MSG_WARN([Kernel Distro seems to be neither RedHat, SuSE, Ubuntu nor Debian])
179 AC_MSG_CHECKING([for Linux kernel module package directory])
180 AC_ARG_WITH([kmp-moddir],
181 AC_HELP_STRING([--with-kmp-moddir=string],
182 [set the kmod updates or extra directory]),
185 AS_IF([test x$RHEL_KERNEL = xyes], [KMP_MODDIR="extra/kernel"],
186 [test x$SUSE_KERNEL = xyes], [KMP_MODDIR="updates/kernel"],
187 [test x$UBUNTU_KERNEL = xyes], [KMP_MODDIR="updates/kernel"],
188 [test x$DEBIAN_KERNEL = xyes], [KMP_MODDIR="updates/kernel"],
189 [AC_MSG_WARN([Kernel Distro seems to be neither RedHat, SuSE, Ubuntu nor Debian])]
191 IN_KERNEL="${PACKAGE}"])
192 AC_MSG_RESULT($KMP_MODDIR)
194 moduledir="/lib/modules/${LINUXRELEASE}/${KMP_MODDIR}"
196 modulefsdir="${moduledir}/fs/${IN_KERNEL}"
197 AC_SUBST(modulefsdir)
199 modulenetdir="${moduledir}/net/${IN_KERNEL}"
200 AC_SUBST(modulenetdir)
206 # LB_LINUX_SYMVERFILE
208 # SLES 9 uses a different name for this file - unsure about vanilla kernels
209 # around this version, but it matters for servers only.
210 AC_DEFUN([LB_LINUX_SYMVERFILE], [
211 AC_CACHE_CHECK([for the name of module symbol version file], lb_cv_module_symvers, [
212 AS_IF([grep -q Modules.symvers $LINUX/scripts/Makefile.modpost],
213 [lb_cv_module_symvers=Modules.symvers],
214 [lb_cv_module_symvers=Module.symvers])
216 SYMVERFILE=$lb_cv_module_symvers
221 # LB_ARG_REPLACE_PATH(PACKAGE, PATH)
223 AC_DEFUN([LB_ARG_REPLACE_PATH], [
225 eval set -- $ac_configure_args
229 arg=--with-[$1]=[$2] ;;
231 arg=$(printf %s\n ["$arg"] | sed "s/'/'\\\\\\\\''/g") ;;
233 dnl AS_VAR_APPEND([new_configure_args], [" '$arg'"])
234 new_configure_args="$new_configure_args '$arg'"
236 ac_configure_args=$new_configure_args
240 # __LB_ARG_CANON_PATH
242 # this is the work-horse of the next function
244 AC_DEFUN([__LB_ARG_CANON_PATH], [
245 [$3]=$(readlink -f $with_$2)
246 LB_ARG_REPLACE_PATH([$1], $[$3])
252 # a front-end for the above function that transforms - and . in the
253 # PACKAGE portion of --with-PACKAGE into _ suitable for variable names
255 AC_DEFUN([LB_ARG_CANON_PATH], [
256 __LB_ARG_CANON_PATH([$1], m4_translit([$1], [-.], [__]), [$2])
262 # Find paths for linux, handling kernel-source rpms
264 AC_DEFUN([LB_LINUX_PATH], [
265 for DEFAULT_LINUX in /usr/src/linux-source-* /lib/modules/$(uname -r)/{source,build} /usr/src/linux* $(find /usr/src/kernels/ -maxdepth 1 -name @<:@0-9@:>@\* | xargs -r ls -d | tail -n 1); do
266 AS_IF([readlink -q -e $DEFAULT_LINUX >/dev/null], [break])
268 if test "$DEFAULT_LINUX" = "/lib/modules/$(uname -r)/source"; then
269 PATHS="/lib/modules/$(uname -r)/build"
271 PATHS="/usr/src/linux-headers-$(uname -r)"
273 PATHS+=" $DEFAULT_LINUX"
274 for DEFAULT_LINUX_OBJ in $PATHS; do
275 AS_IF([readlink -q -e $DEFAULT_LINUX_OBJ >/dev/null], [break])
278 AC_MSG_CHECKING([for Linux sources])
280 AC_HELP_STRING([--with-linux=path],
281 [set path to Linux source (default=/lib/modules/$(uname -r)/{source,build},/usr/src/linux)]),
282 [LB_ARG_CANON_PATH([linux], [LINUX])
283 DEFAULT_LINUX_OBJ=$LINUX],
284 [LINUX=$DEFAULT_LINUX])
285 AC_MSG_RESULT([$LINUX])
288 # -------- check for linux --------
289 LB_CHECK_FILE([$LINUX], [],
290 [AC_MSG_ERROR([Kernel source $LINUX could not be found.])])
292 # -------- linux objects (for 2.6) --
293 AC_MSG_CHECKING([for Linux objects])
294 AC_ARG_WITH([linux-obj],
295 AC_HELP_STRING([--with-linux-obj=path],
296 [set path to Linux objects (default=/lib/modules/$(uname -r)/build,/usr/src/linux)]),
297 [LB_ARG_CANON_PATH([linux-obj], [LINUX_OBJ])],
298 [LINUX_OBJ=$DEFAULT_LINUX_OBJ])
299 AC_MSG_RESULT([$LINUX_OBJ])
302 # -------- check for .config --------
303 AC_ARG_WITH([linux-config],
304 [AC_HELP_STRING([--with-linux-config=path],
305 [set path to Linux .conf (default=$LINUX_OBJ/.config)])],
306 [LB_ARG_CANON_PATH([linux-config], [LINUX_CONFIG])],
307 [LINUX_CONFIG=$LINUX_OBJ/.config])
309 # -------- check if .config exists --
310 LB_CHECK_FILE([$LINUX_CONFIG], [],
313 Kernel config could not be found.
316 AC_SUBST(LINUX_CONFIG)
318 LB_CHECK_FILE([/boot/kernel.h],
319 [KERNEL_SOURCE_HEADER='/boot/kernel.h'],
320 [LB_CHECK_FILE([/var/adm/running-kernel.h],
321 [KERNEL_SOURCE_HEADER='/var/adm/running-kernel.h'])])
323 AC_ARG_WITH([kernel-source-header],
324 AC_HELP_STRING([--with-kernel-source-header=path],
325 [Use a different kernel version header.]),
326 [LB_ARG_CANON_PATH([kernel-source-header], [KERNEL_SOURCE_HEADER])])
328 # ----------- make dep run? ------------------
329 # at 2.6.19 # $LINUX/include/linux/config.h is removed
330 # and at more old has only one line include <autoconf.h>
332 LB_CHECK_FILE([$LINUX_OBJ/include/generated/autoconf.h],
333 [AUTOCONF_HDIR=generated],
334 [LB_CHECK_FILE([$LINUX_OBJ/include/linux/autoconf.h],
335 [AUTOCONF_HDIR=linux],
336 [AC_MSG_ERROR([Run make config in $LINUX.])])])
337 AC_SUBST(AUTOCONF_HDIR)
339 LB_CHECK_FILE([$LINUX_OBJ/include/linux/version.h],
340 [VERSION_HDIR=linux],
341 [LB_CHECK_FILE([$LINUX_OBJ/include/generated/uapi/linux/version.h],
342 [VERSION_HDIR=generated/uapi/linux],
343 [AC_MSG_ERROR([Run make config in $LINUX.])])])
344 AC_SUBST(VERSION_HDIR)
346 # ----------- kconfig.h exists ---------------
347 # kernel 3.1, $LINUX/include/linux/kconfig.h is added
348 # see kernel commit 2a11c8ea20bf850b3a2c60db8c2e7497d28aba99
350 LB_CHECK_FILE([$LINUX/include/linux/kconfig.h],
351 [CONFIG_INCLUDE=$LINUX/include/linux/kconfig.h],
352 [CONFIG_INCLUDE=include/$AUTOCONF_HDIR/autoconf.h])
353 AC_SUBST(CONFIG_INCLUDE)
355 # ------------ rhconfig.h includes runtime-generated bits --
356 # RedHat kernel-source checks
358 # we know this exists after the check above. if the user
359 # tarred up the tree and ran make dep etc. in it, then
360 # version.h gets overwritten with a standard linux one.
362 AS_IF([grep rhconfig $LINUX_OBJ/include/$VERSION_HDIR/version.h >/dev/null], [
363 # This is a clean kernel-source tree, we need to
364 # enable extensive workarounds to get this to build modules
365 LB_CHECK_FILE([$KERNEL_SOURCE_HEADER], [
366 AS_IF([test $KERNEL_SOURCE_HEADER = '/boot/kernel.h'],
369 Using /boot/kernel.h from RUNNING kernel.
371 If this is not what you want, use --with-kernel-source-header.
372 Consult build/README.kernel-source for details.
377 $KERNEL_SOURCE_HEADER not found.
379 Consult build/README.kernel-source for details.
382 EXTRA_KCFLAGS="-include $KERNEL_SOURCE_HEADER $EXTRA_KCFLAGS"
385 # this is needed before we can build modules
388 # --- check that we can build modules at all
389 LB_CHECK_COMPILE([that modules can be built at all], build_modules,
393 Kernel modules cannot be built. Consult config.log for details.
395 If you are trying to build with a kernel-source rpm,
396 consult build/README.kernel-source
401 ]) # end of LB_LINUX_PATH
406 # after 2.6.28 CONFIG_KMOD is removed, and only CONFIG_MODULES remains
407 # so we test if request_module is implemented or not
408 AC_DEFUN([LC_MODULE_LOADING], [
409 AC_CACHE_CHECK([if Linux kernel module loading is possible], lb_cv_module_loading, [
411 #include <linux/kmod.h>
413 int myretval=ENOSYS ;
416 $makerule LUSTRE_KERNEL_TEST=conftest.i
418 grep request_module build/conftest.i |dnl
419 grep -v `grep "int myretval=" build/conftest.i |dnl
420 cut -d= -f2 | cut -d" " -f1`dnl
422 ], [lb_cv_module_loading="yes"], [lb_cv_module_loading="no"])
424 AS_IF([test "$lb_cv_module_loading" = yes],
425 [AC_DEFINE(HAVE_MODULE_LOADING_SUPPORT, 1,
426 [kernel module loading is possible])],
429 Kernel module loading support is highly recommended.
440 AC_DEFUN([LB_PROG_LINUX], [
444 LB_CHECK_CONFIG([MODULES], [], [
447 module support is required to build Lustre kernel modules.
451 LB_CHECK_CONFIG([MODVERSIONS])
453 LB_CHECK_CONFIG([KALLSYMS], [], [
456 Lustre requires that CONFIG_KALLSYMS is enabled in your kernel.
467 # Determine if the target is a dpkg system or rpm
469 AC_DEFUN([LB_USES_DPKG], [
470 AC_CACHE_CHECK([if this distro uses dpkg], lb_cv_uses_dpkg, [
472 AS_CASE([$(which dpkg 2>/dev/null)],[*/dpkg], [lb_cv_uses_dpkg="yes"])
474 uses_dpkg=$lb_cv_uses_dpkg
480 # check symbol exported or not
482 # $2 - file(s) for find.
486 # 2.6 based kernels - put modversion info into $LINUX/Module.modvers or check
488 AC_DEFUN([LB_CHECK_EXPORT], [
489 AS_VAR_PUSHDEF([lb_export], [lb_cv_export_$1])dnl
490 AC_CACHE_CHECK([if Linux kernel exports '$1'], lb_export, [
491 AS_VAR_SET([lb_export], [no])
492 AS_IF([grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX_OBJ/$SYMVERFILE 2>/dev/null],
493 [AS_VAR_SET([lb_export], [yes])],
495 AS_IF([grep -q -E "EXPORT_SYMBOL.*\($1\)" "$LINUX/$file" 2>/dev/null], [
496 AS_VAR_SET([lb_export], [yes])
501 AS_VAR_IF([lb_export], [yes], [$3], [$4])[]dnl
502 AS_VAR_POPDEF([lb_export])dnl
508 # check if a given config option is defined
513 AC_DEFUN([LB_CHECK_CONFIG], [
514 LB_CHECK_COMPILE([if Linux kernel was built with CONFIG_$1],
516 #include <$AUTOCONF_HDIR/autoconf.h>
519 #error CONFIG_$1 not #defined
527 # check if a given config option is builtin or as module
528 # $1 - CONFIG_<name> or CONFIG_<name>_MODULE
532 AC_DEFUN([LB_CHECK_CONFIG_IM], [
533 LB_CHECK_COMPILE([if Linux kernel was built with CONFIG_$1 in or as module],
535 #include <$AUTOCONF_HDIR/autoconf.h>
537 #if !(defined(CONFIG_$1) || defined(CONFIG_$1_MODULE))
538 #error CONFIG_$1 and CONFIG_$1_MODULE not #defined
541 ]) # LB_CHECK_CONFIG_IM
544 # these are like AC_TRY_COMPILE, but try to build modules against the
545 # kernel, inside the build directory
549 # LB_LANG_PROGRAM(C)([PROLOGUE], [BODY])
550 # --------------------------------------
552 m4_define([LB_LANG_PROGRAM],
554 #include <linux/kernel.h>
555 #include <linux/module.h>
557 #if defined(NEED_LOCKDEP_IS_HELD_DISCARD_CONST) \
558 && defined(CONFIG_LOCKDEP) \
559 && defined(lockdep_is_held)
560 #undef lockdep_is_held
561 #define lockdep_is_held(lock) \
562 lock_is_held((struct lockdep_map *)&(lock)->dep_map)
569 dnl Do *not* indent the following line: there may be CPP directives.
570 dnl Don't move the `;' right after for the same reason.
575 MODULE_LICENSE("GPL");])
578 # LB_LINUX_COMPILE_IFELSE
580 # like AC_COMPILE_IFELSE
582 # $1 - AC_LANG_SOURCE()
588 AC_DEFUN([LB_LINUX_COMPILE_IFELSE],
589 [m4_ifvaln([$1], [AC_LANG_CONFTEST([AC_LANG_SOURCE([$1])])])dnl
590 rm -f build/conftest.o build/conftest.mod.c build/conftest.ko
591 SUBARCH=$(echo $target_cpu | sed -e 's/powerpc.*/powerpc/' -e 's/ppc.*/powerpc/' -e 's/x86_64/x86/' -e 's/i.86/x86/' -e 's/k1om/x86/' -e 's/aarch64.*/arm64/' -e 's/armv7.*/arm/')
592 AS_IF([AC_TRY_COMMAND(cp conftest.c build && make -d [$2] LDFLAGS= ${LD:+LD="$LD"} CC="$CC" -f $PWD/build/Makefile LUSTRE_LINUX_CONFIG=$LINUX_CONFIG LINUXINCLUDE="$EXTRA_CHECK_INCLUDE -I$LINUX/arch/$SUBARCH/include -Iinclude -Iarch/$SUBARCH/include/generated -I$LINUX/include -Iinclude2 -I$LINUX/include/uapi -Iinclude/generated -I$LINUX/arch/$SUBARCH/include/uapi -Iarch/$SUBARCH/include/generated/uapi -I$LINUX/include/uapi -Iinclude/generated/uapi ${SPL_OBJ:+-include $SPL_OBJ/spl_config.h} ${ZFS_OBJ:+-include $ZFS_OBJ/zfs_config.h} ${SPL:+-I$SPL/include } ${ZFS:+-I$ZFS -I$ZFS/include -I${SPL:-$ZFS/include/spl}} -include $CONFIG_INCLUDE" KBUILD_EXTRA_SYMBOLS="${ZFS_OBJ:+$ZFS_OBJ/Module.symvers} $KBUILD_EXTRA_SYMBOLS" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $MODULE_TARGET=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
594 [_AC_MSG_LOG_CONFTEST
595 m4_ifvaln([$5],[$5])dnl])
596 rm -f build/conftest.o build/conftest.mod.c build/conftest.mod.o build/conftest.ko m4_ifval([$1], [build/conftest.c conftest.c])[]dnl
600 # LB_LINUX_TRY_COMPILE
602 # like AC_TRY_COMPILE
604 AC_DEFUN([LB_LINUX_TRY_COMPILE], [
605 LB_LINUX_COMPILE_IFELSE(
606 [AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])],
607 [modules], [test -s build/conftest.o],
614 # like LB_LINUX_TRY_COMPILE, but with different arguments
616 AC_DEFUN([LB_LINUX_TRY_MAKE], [
617 LB_LINUX_COMPILE_IFELSE(
618 [AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])],
619 [$3], [$4], [$5], [$6])
624 # $1 - checking message
631 AC_DEFUN([LB_CHECK_COMPILE], [
632 AS_VAR_PUSHDEF([lb_compile], [lb_cv_compile_$2])dnl
633 AC_CACHE_CHECK([$1], lb_compile, [
634 LB_LINUX_TRY_COMPILE([$3], [$4],
635 [AS_VAR_SET([lb_compile], [yes])],
636 [AS_VAR_SET([lb_compile], [no])])
638 AS_VAR_IF([lb_compile], [yes], [$5], [$6])[]dnl
639 AS_VAR_POPDEF([lb_compile])dnl
640 ]) # LB_CHECK_COMPILE
643 # LB_CHECK_LINUX_HEADER
645 # Like AC_CHECK_HEADER but checks for a kernel-space header
647 m4_define([LB_CHECK_LINUX_HEADER], [
648 AS_VAR_PUSHDEF([lb_header], [lb_cv_header_$1])dnl
649 AC_CACHE_CHECK([for $1], lb_header, [
650 LB_LINUX_COMPILE_IFELSE([LB_LANG_PROGRAM([@%:@include <$1>])],
651 [modules], [test -s build/conftest.o],
652 [AS_VAR_SET([lb_header], [yes])],
653 [AS_VAR_SET([lb_header], [no])])
655 AS_VAR_IF([lb_header], [yes], [$2], [$3])[]dnl
656 AS_VAR_POPDEF([lb_header])dnl
657 ]) # LB_CHECK_LINUX_HEADER
659 # ------------------------------------------------------------------------------
660 # Support 2 stage: parallel compile then checked test results
661 # Heavily inspired by OpenZFS
663 AC_DEFUN([LB2_LINUX_CONFTEST_C], [
664 test -d ${TEST_DIR}/$2 || mkdir -p ${TEST_DIR}/$2
665 cat confdefs.h - <<_EOF >${TEST_DIR}/$2/$2.c
671 # LB2_LINUX_CONFTEST_MAKEFILE
673 # $1 - *unique* test case name
674 # $2 - additional build flags (ccflags)
675 # $3 - external kernel includes for lnet o2ib|gni
677 AC_DEFUN([LB2_LINUX_CONFTEST_MAKEFILE], [
678 test -d ${TEST_DIR} || mkdir -p ${TEST_DIR}
679 test -d ${TEST_DIR}/$1 || mkdir -p ${TEST_DIR}/$1
681 file=${TEST_DIR}/$1/Makefile
685 # Example command line to manually build source
686 # make modules -C $LINUX_OBJ $ARCH_UM M=${TEST_DIR}/$1
695 LINUXINCLUDE = $EXT_INCLUDE
696 LINUXINCLUDE += -I$LINUX/arch/$SUBARCH/include
697 LINUXINCLUDE += -Iinclude -Iarch/$SUBARCH/include/generated
698 LINUXINCLUDE += -I$LINUX/include
699 LINUXINCLUDE += -Iinclude2
700 LINUXINCLUDE += -I$LINUX/include/uapi
701 LINUXINCLUDE += -Iinclude/generated
702 LINUXINCLUDE += -I$LINUX/arch/$SUBARCH/include/uapi
703 LINUXINCLUDE += -Iarch/$SUBARCH/include/generated/uapi
704 LINUXINCLUDE += -I$LINUX/include/uapi -Iinclude/generated/uapi
706 LINUXINCLUDE += -include \$(SOBJ)/spl_config.h
709 LINUXINCLUDE += -include \$(ZOBJ)/zfs_config.h
712 LINUXINCLUDE += -I\$(SINC)/include
715 LINUXINCLUDE += -I\$(ZINC) -I\$(ZINC)/include
717 LINUXINCLUDE += -I\$(SINC)
719 LINUXINCLUDE += -I\$(ZINC)/include/spl
722 LINUXINCLUDE += -include $CONFIG_INCLUDE
723 KBUILD_EXTRA_SYMBOLS=${ZFS_OBJ:+$ZFS_OBJ/Module.symvers}
725 ccflags-y := -Werror-implicit-function-declaration
728 # Additional custom CFLAGS as requested.
729 m4_ifval($2, [echo "ccflags-y += $2" >>$file], [])
732 echo "obj-m := $1.o" >>$file
733 echo "obj-m += $1/" >>${TEST_DIR}/Makefile
745 # Used internally by LB2_LINUX_TEST_COMPILE
747 AC_DEFUN([LB2_LINUX_COMPILE], [
749 KBUILD_MODPOST_NOFINAL="yes"
750 make modules -k -j$TEST_JOBS -C $LINUX_OBJ $ARCH_UM
751 M=$1 >$1/build.log 2>&1])
752 AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4])
756 # LB2_LINUX_TEST_COMPILE
758 # Perform a full compile excluding the final modpost phase.
762 AC_DEFUN([LB2_LINUX_TEST_COMPILE], [
763 LB2_LINUX_COMPILE([$2], [test -f $2/build.log], [
764 mv $2/Makefile $2/Makefile.compile.$1
765 mv $2/build.log $2/build.log.$1
768 *** Unable to compile test source to determine kernel interfaces.])
773 # Perform the compilation of the test cases in two phases.
775 # Phase 1) attempt to build the object files for all of the tests
776 # defined by the LB2_LINUX_TEST_SRC macro.
778 # Phase 2) disable all tests which failed the initial compilation.
780 # This allows us efficiently build the test cases in parallel while
781 # remaining resilient to build failures which are expected when
782 # detecting the available kernel interfaces.
784 # The maximum allowed parallelism can be controlled by setting the
785 # TEST_JOBS environment variable which defaults to $(nproc).
787 AC_DEFUN([LB2_LINUX_TEST_COMPILE_ALL], [
788 # Phase 1 - Compilation only, final linking is skipped.
789 LB2_LINUX_TEST_COMPILE([$1], [${TEST_DIR}])
791 for dir in $(awk '/^obj-m/ { print [$]3 }' \
792 ${TEST_DIR}/Makefile.compile.$1); do
794 AS_IF([test -f ${TEST_DIR}/$name/$name.o], [
795 touch ${TEST_DIR}/$name/$name.ko
807 # $5 - external include paths
809 # NOTICE as all of the test cases are compiled in parallel tests may not
810 # depend on the results other tests.
811 # Each test needs resolve any external dependencies at the time the program
812 # source is generated.
814 AC_DEFUN([LB2_LINUX_TEST_SRC], [
815 LB2_LINUX_CONFTEST_C([LB_LANG_PROGRAM([[$2]], [[$3]])], [$1_pc])
816 LB2_LINUX_CONFTEST_MAKEFILE([$1_pc], [$4], [$5])
820 # LB2_LINUX_TEST_RESULT
822 # $1 - *unique* name matching the LB2_LINUX_TEST_SRC macro
823 # $2 - run on success (valid .ko generated)
824 # $3 - run on failure (unable to compile)
826 AC_DEFUN([LB2_LINUX_TEST_RESULT], [
827 AS_IF([test -d ${TEST_DIR}/$1_pc], [
828 AS_IF([test -f ${TEST_DIR}/$1_pc/$1_pc.ko], [$2], [$3])
831 *** No matching source for the "$1" test, check that
832 *** both the test source and result macros refer to the same name.