]>
Commit | Line | Data |
---|---|---|
c9c0d073 BB |
1 | dnl # |
2 | dnl # Default ZFS kernel configuration | |
3 | dnl # | |
4 | AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ | |
5 | ZFS_AC_KERNEL | |
6 | ZFS_AC_SPL | |
319a99a3 | 7 | ZFS_AC_TEST_MODULE |
c9c0d073 BB |
8 | ZFS_AC_KERNEL_CONFIG |
9 | ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS | |
10 | ZFS_AC_KERNEL_TYPE_FMODE_T | |
11 | ZFS_AC_KERNEL_KOBJ_NAME_LEN | |
b5a28807 | 12 | ZFS_AC_KERNEL_3ARG_BLKDEV_GET |
45066d1f | 13 | ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH |
c9c0d073 BB |
14 | ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE |
15 | ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS | |
16 | ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE | |
2404b014 | 17 | ZFS_AC_KERNEL_BDEV_PHYSICAL_BLOCK_SIZE |
c9c0d073 | 18 | ZFS_AC_KERNEL_BIO_EMPTY_BARRIER |
2959d94a | 19 | ZFS_AC_KERNEL_BIO_FAILFAST |
f4af6bb7 BB |
20 | ZFS_AC_KERNEL_BIO_FAILFAST_DTD |
21 | ZFS_AC_KERNEL_REQ_FAILFAST_MASK | |
c9c0d073 | 22 | ZFS_AC_KERNEL_BIO_END_IO_T_ARGS |
675de5aa | 23 | ZFS_AC_KERNEL_BIO_RW_SYNC |
c9c0d073 | 24 | ZFS_AC_KERNEL_BIO_RW_SYNCIO |
675de5aa | 25 | ZFS_AC_KERNEL_REQ_SYNC |
c9c0d073 | 26 | ZFS_AC_KERNEL_BLK_END_REQUEST |
b18019d2 | 27 | ZFS_AC_KERNEL_BLK_QUEUE_FLUSH |
34037afe ED |
28 | ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS |
29 | ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS | |
30 | ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE | |
31 | ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT | |
32 | ZFS_AC_KERNEL_BLK_QUEUE_NONROT | |
30930fba | 33 | ZFS_AC_KERNEL_BLK_QUEUE_DISCARD |
c9c0d073 BB |
34 | ZFS_AC_KERNEL_BLK_FETCH_REQUEST |
35 | ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST | |
36 | ZFS_AC_KERNEL_BLK_RQ_BYTES | |
37 | ZFS_AC_KERNEL_BLK_RQ_POS | |
38 | ZFS_AC_KERNEL_BLK_RQ_SECTORS | |
39 | ZFS_AC_KERNEL_GET_DISK_RO | |
b5a28807 | 40 | ZFS_AC_KERNEL_GET_GENDISK |
c9c0d073 BB |
41 | ZFS_AC_KERNEL_RQ_IS_SYNC |
42 | ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT | |
ee5fd0bb | 43 | ZFS_AC_KERNEL_DISCARD_GRANULARITY |
777d4af8 | 44 | ZFS_AC_KERNEL_CONST_XATTR_HANDLER |
f9637c6c BB |
45 | ZFS_AC_KERNEL_XATTR_HANDLER_GET |
46 | ZFS_AC_KERNEL_XATTR_HANDLER_SET | |
47621f3d | 47 | ZFS_AC_KERNEL_SHOW_OPTIONS |
adcd70bd | 48 | ZFS_AC_KERNEL_FSYNC |
2c395def | 49 | ZFS_AC_KERNEL_EVICT_INODE |
8780c539 | 50 | ZFS_AC_KERNEL_DIRTY_INODE_WITH_FLAGS |
ab26409d BB |
51 | ZFS_AC_KERNEL_NR_CACHED_OBJECTS |
52 | ZFS_AC_KERNEL_FREE_CACHED_OBJECTS | |
cb2d1901 | 53 | ZFS_AC_KERNEL_FALLOCATE |
95f5c63b | 54 | ZFS_AC_KERNEL_MKDIR_UMODE_T |
8f195a90 | 55 | ZFS_AC_KERNEL_LOOKUP_NAMEIDATA |
558ef6d0 | 56 | ZFS_AC_KERNEL_CREATE_NAMEIDATA |
ea1fdf46 | 57 | ZFS_AC_KERNEL_TRUNCATE_RANGE |
ebe7e575 | 58 | ZFS_AC_KERNEL_AUTOMOUNT |
756c3e5a | 59 | ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE |
393b44c7 | 60 | ZFS_AC_KERNEL_COMMIT_METADATA |
739a1a82 | 61 | ZFS_AC_KERNEL_CLEAR_INODE |
bdf4328b | 62 | ZFS_AC_KERNEL_INSERT_INODE_LOCKED |
6a0936ba | 63 | ZFS_AC_KERNEL_D_MAKE_ROOT |
055656d4 | 64 | ZFS_AC_KERNEL_D_OBTAIN_ALIAS |
df554c14 | 65 | ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE |
b3129792 | 66 | ZFS_AC_KERNEL_TRUNCATE_SETSIZE |
5c03efc3 | 67 | ZFS_AC_KERNEL_6ARGS_SECURITY_INODE_INIT_SECURITY |
166dd49d | 68 | ZFS_AC_KERNEL_CALLBACK_SECURITY_INODE_INIT_SECURITY |
2cf7f52b | 69 | ZFS_AC_KERNEL_MOUNT_NODEV |
ab26409d | 70 | ZFS_AC_KERNEL_SHRINK |
76659dc1 | 71 | ZFS_AC_KERNEL_BDI |
5547c2f1 | 72 | ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER |
28eb9213 | 73 | ZFS_AC_KERNEL_SET_NLINK |
6d1d976b | 74 | ZFS_AC_KERNEL_ELEVATOR_CHANGE |
3c203610 | 75 | ZFS_AC_KERNEL_5ARG_SGET |
c9c0d073 | 76 | |
8366cd6a | 77 | AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ |
6283f55e | 78 | KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" |
8366cd6a | 79 | ]) |
6283f55e BB |
80 | AC_SUBST(KERNELMAKE_PARAMS) |
81 | ||
82 | ||
c9c0d073 BB |
83 | dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other |
84 | dnl # compiler options are added by the kernel build system. | |
8a7e1cee | 85 | KERNELCPPFLAGS="$KERNELCPPFLAGS $NO_UNUSED_BUT_SET_VARIABLE" |
c9c0d073 BB |
86 | KERNELCPPFLAGS="$KERNELCPPFLAGS -DHAVE_SPL -D_KERNEL" |
87 | KERNELCPPFLAGS="$KERNELCPPFLAGS -DTEXT_DOMAIN=\\\"zfs-linux-kernel\\\"" | |
c9c0d073 | 88 | |
c9c0d073 BB |
89 | AC_SUBST(KERNELCPPFLAGS) |
90 | ]) | |
91 | ||
92 | dnl # | |
93 | dnl # Detect name used for Module.symvers file in kernel | |
94 | dnl # | |
95 | AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ | |
96 | modpost=$LINUX/scripts/Makefile.modpost | |
97 | AC_MSG_CHECKING([kernel file name for module symbols]) | |
319a99a3 | 98 | AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ |
8366cd6a | 99 | AS_IF([grep -q Modules.symvers $modpost], [ |
c9c0d073 | 100 | LINUX_SYMBOLS=Modules.symvers |
8366cd6a | 101 | ], [ |
c9c0d073 | 102 | LINUX_SYMBOLS=Module.symvers |
8366cd6a | 103 | ]) |
a60b1c0a | 104 | |
8366cd6a | 105 | AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ |
a60b1c0a BB |
106 | AC_MSG_ERROR([ |
107 | *** Please make sure the kernel devel package for your distribution | |
108 | *** is installed. If your building with a custom kernel make sure the | |
109 | *** kernel is configured, built, and the '--with-linux=PATH' configure | |
110 | *** option refers to the location of the kernel source.]) | |
8366cd6a PS |
111 | ]) |
112 | ], [ | |
c9c0d073 | 113 | LINUX_SYMBOLS=NONE |
8366cd6a | 114 | ]) |
c9c0d073 BB |
115 | AC_MSG_RESULT($LINUX_SYMBOLS) |
116 | AC_SUBST(LINUX_SYMBOLS) | |
117 | ]) | |
118 | ||
119 | dnl # | |
120 | dnl # Detect the kernel to be built against | |
121 | dnl # | |
122 | AC_DEFUN([ZFS_AC_KERNEL], [ | |
123 | AC_ARG_WITH([linux], | |
124 | AS_HELP_STRING([--with-linux=PATH], | |
125 | [Path to kernel source]), | |
126 | [kernelsrc="$withval"]) | |
127 | ||
128 | AC_ARG_WITH(linux-obj, | |
129 | AS_HELP_STRING([--with-linux-obj=PATH], | |
130 | [Path to kernel build objects]), | |
131 | [kernelbuild="$withval"]) | |
132 | ||
133 | AC_MSG_CHECKING([kernel source directory]) | |
8366cd6a PS |
134 | AS_IF([test -z "$kernelsrc"], [ |
135 | AS_IF([test -e "/lib/modules/$(uname -r)/source"], [ | |
1b94c25c BB |
136 | headersdir="/lib/modules/$(uname -r)/source" |
137 | sourcelink=$(readlink -f "$headersdir") | |
8366cd6a | 138 | ], [test -e "/lib/modules/$(uname -r)/build"], [ |
1b94c25c | 139 | headersdir="/lib/modules/$(uname -r)/build" |
c9c0d073 | 140 | sourcelink=$(readlink -f "$headersdir") |
8366cd6a | 141 | ], [ |
c9c0d073 | 142 | sourcelink=$(ls -1d /usr/src/kernels/* \ |
8366cd6a | 143 | /usr/src/linux-* \ |
c9c0d073 | 144 | 2>/dev/null | grep -v obj | tail -1) |
8366cd6a | 145 | ]) |
c9c0d073 | 146 | |
8366cd6a | 147 | AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [ |
c9c0d073 | 148 | kernelsrc=`readlink -f ${sourcelink}` |
8366cd6a | 149 | ], [ |
56a517ae | 150 | kernelsrc="[Not found]" |
8366cd6a PS |
151 | ]) |
152 | ], [ | |
153 | AS_IF([test "$kernelsrc" = "NONE"], [ | |
c9c0d073 | 154 | kernsrcver=NONE |
8366cd6a PS |
155 | ]) |
156 | ]) | |
c9c0d073 BB |
157 | |
158 | AC_MSG_RESULT([$kernelsrc]) | |
56a517ae BB |
159 | AS_IF([test ! -d "$kernelsrc"], [ |
160 | AC_MSG_ERROR([ | |
161 | *** Please make sure the kernel devel package for your distribution | |
162 | *** is installed then try again. If that fails you can specify the | |
163 | *** location of the kernel source with the '--with-linux=PATH' option.]) | |
164 | ]) | |
165 | ||
c9c0d073 | 166 | AC_MSG_CHECKING([kernel build directory]) |
8366cd6a PS |
167 | AS_IF([test -z "$kernelbuild"], [ |
168 | AS_IF([test -e "/lib/modules/$(uname -r)/build"], [ | |
1b94c25c | 169 | kernelbuild=`readlink -f /lib/modules/$(uname -r)/build` |
8366cd6a | 170 | ], [test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}], [ |
c9c0d073 | 171 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} |
8366cd6a | 172 | ], [test -d ${kernelsrc}-obj/${target_cpu}/default], [ |
70574182 | 173 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default |
8366cd6a | 174 | ], [test -d `dirname ${kernelsrc}`/build-${target_cpu}], [ |
c9c0d073 | 175 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} |
8366cd6a | 176 | ], [ |
c9c0d073 | 177 | kernelbuild=${kernelsrc} |
8366cd6a PS |
178 | ]) |
179 | ]) | |
c9c0d073 BB |
180 | AC_MSG_RESULT([$kernelbuild]) |
181 | ||
182 | AC_MSG_CHECKING([kernel source version]) | |
183 | utsrelease1=$kernelbuild/include/linux/version.h | |
184 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
185 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
8366cd6a | 186 | AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1], [ |
c9c0d073 | 187 | utsrelease=linux/version.h |
8366cd6a | 188 | ], [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2], [ |
c9c0d073 | 189 | utsrelease=linux/utsrelease.h |
8366cd6a | 190 | ], [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3], [ |
c9c0d073 | 191 | utsrelease=generated/utsrelease.h |
8366cd6a | 192 | ]) |
c9c0d073 | 193 | |
8366cd6a | 194 | AS_IF([test "$utsrelease"], [ |
c9c0d073 BB |
195 | kernsrcver=`(echo "#include <$utsrelease>"; |
196 | echo "kernsrcver=UTS_RELEASE") | | |
197 | cpp -I $kernelbuild/include | | |
198 | grep "^kernsrcver=" | cut -d \" -f 2` | |
199 | ||
8366cd6a | 200 | AS_IF([test -z "$kernsrcver"], [ |
c9c0d073 BB |
201 | AC_MSG_RESULT([Not found]) |
202 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
8366cd6a PS |
203 | ]) |
204 | ], [ | |
c9c0d073 | 205 | AC_MSG_RESULT([Not found]) |
319a99a3 ED |
206 | if test "x$enable_linux_builtin" != xyes; then |
207 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) | |
208 | else | |
209 | AC_MSG_ERROR([ | |
210 | *** Cannot find UTS_RELEASE definition. | |
211 | *** Please run 'make prepare' inside the kernel source tree.]) | |
212 | fi | |
8366cd6a | 213 | ]) |
c9c0d073 BB |
214 | |
215 | AC_MSG_RESULT([$kernsrcver]) | |
216 | ||
217 | LINUX=${kernelsrc} | |
218 | LINUX_OBJ=${kernelbuild} | |
219 | LINUX_VERSION=${kernsrcver} | |
220 | ||
221 | AC_SUBST(LINUX) | |
222 | AC_SUBST(LINUX_OBJ) | |
223 | AC_SUBST(LINUX_VERSION) | |
224 | ||
225 | ZFS_AC_MODULE_SYMVERS | |
226 | ]) | |
227 | ||
228 | dnl # | |
229 | dnl # Detect name used for the additional SPL Module.symvers file. If one | |
230 | dnl # does not exist this is likely because the SPL has been configured | |
5085d558 PS |
231 | dnl # but not built. The '--with-spl-timeout' option can be passed |
232 | dnl # to pause here, waiting for the file to appear from a concurrently | |
233 | dnl # building SPL package. If the file does not appear in time, a good | |
234 | dnl # guess is made as to what this file will be named based on what it | |
235 | dnl # is named in the kernel build products. This file will first be | |
236 | dnl # used at link time so if the guess is wrong the build will fail | |
237 | dnl # then. This unfortunately means the ZFS package does not contain a | |
238 | dnl # reliable mechanism to detect symbols exported by the SPL at | |
239 | dnl # configure time. | |
c9c0d073 BB |
240 | dnl # |
241 | AC_DEFUN([ZFS_AC_SPL_MODULE_SYMVERS], [ | |
5085d558 PS |
242 | AC_ARG_WITH([spl-timeout], |
243 | AS_HELP_STRING([--with-spl-timeout=SECS], | |
244 | [Wait SECS for symvers file to appear @<:@default=0@:>@]), | |
245 | [timeout="$withval"], [timeout=0]) | |
246 | ||
c9c0d073 | 247 | AC_MSG_CHECKING([spl file name for module symbols]) |
5085d558 PS |
248 | SPL_SYMBOLS=NONE |
249 | ||
250 | while true; do | |
251 | AS_IF([test -r $SPL_OBJ/Module.symvers], [ | |
252 | SPL_SYMBOLS=Module.symvers | |
253 | ], [test -r $SPL_OBJ/Modules.symvers], [ | |
254 | SPL_SYMBOLS=Modules.symvers | |
255 | ], [test -r $SPL_OBJ/module/Module.symvers], [ | |
256 | SPL_SYMBOLS=Module.symvers | |
257 | ], [test -r $SPL_OBJ/module/Modules.symvers], [ | |
258 | SPL_SYMBOLS=Modules.symvers | |
259 | ]) | |
260 | ||
261 | AS_IF([test $SPL_SYMBOLS != NONE -o $timeout -le 0], [ | |
262 | break; | |
263 | ], [ | |
264 | sleep 1 | |
265 | timeout=$((timeout-1)) | |
266 | ]) | |
267 | done | |
268 | ||
269 | AS_IF([test "$SPL_SYMBOLS" = NONE], [ | |
c9c0d073 | 270 | SPL_SYMBOLS=$LINUX_SYMBOLS |
8366cd6a | 271 | ]) |
c9c0d073 BB |
272 | |
273 | AC_MSG_RESULT([$SPL_SYMBOLS]) | |
274 | AC_SUBST(SPL_SYMBOLS) | |
275 | ]) | |
276 | ||
277 | dnl # | |
278 | dnl # Detect the SPL module to be built against | |
279 | dnl # | |
280 | AC_DEFUN([ZFS_AC_SPL], [ | |
281 | AC_ARG_WITH([spl], | |
282 | AS_HELP_STRING([--with-spl=PATH], | |
283 | [Path to spl source]), | |
284 | [splsrc="$withval"]) | |
285 | ||
286 | AC_ARG_WITH([spl-obj], | |
287 | AS_HELP_STRING([--with-spl-obj=PATH], | |
288 | [Path to spl build objects]), | |
289 | [splbuild="$withval"]) | |
290 | ||
291 | ||
292 | AC_MSG_CHECKING([spl source directory]) | |
8366cd6a | 293 | AS_IF([test -z "$splsrc"], [ |
26e08952 PS |
294 | dnl # |
295 | dnl # Look in the standard development package location | |
296 | dnl # | |
c9c0d073 BB |
297 | sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \ |
298 | 2>/dev/null | tail -1` | |
299 | ||
26e08952 PS |
300 | dnl # |
301 | dnl # Look in the DKMS source location | |
302 | dnl # | |
303 | AS_IF([test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h], [ | |
304 | sourcelink=`ls -1d /var/lib/dkms/spl/*/build \ | |
305 | 2>/dev/null | tail -1` | |
306 | ]) | |
307 | ||
308 | dnl # | |
309 | dnl # Look in the parent directory | |
310 | dnl # | |
311 | AS_IF([test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h], [ | |
c9c0d073 | 312 | sourcelink=../spl |
8366cd6a | 313 | ]) |
c9c0d073 | 314 | |
074e7295 RY |
315 | dnl # |
316 | dnl # Look in the kernel directory | |
317 | dnl # | |
318 | AS_IF([test -z "$sourcelink" || test ! -e $sourcelink/spl_config.h], [ | |
319 | sourcelink="$LINUX" | |
320 | ]) | |
321 | ||
26e08952 | 322 | AS_IF([test -e $sourcelink/spl_config.h], [ |
c9c0d073 | 323 | splsrc=`readlink -f ${sourcelink}` |
8366cd6a | 324 | ], [ |
c9c0d073 BB |
325 | AC_MSG_RESULT([Not found]) |
326 | AC_MSG_ERROR([ | |
327 | *** Please make sure the spl devel package for your distribution | |
328 | *** is installed then try again. If that fails you can specify the | |
329 | *** location of the spl source with the '--with-spl=PATH' option.]) | |
8366cd6a PS |
330 | ]) |
331 | ], [ | |
332 | AS_IF([test "$splsrc" = "NONE"], [ | |
c9c0d073 BB |
333 | splbuild=NONE |
334 | splsrcver=NONE | |
8366cd6a PS |
335 | ]) |
336 | ]) | |
c9c0d073 BB |
337 | |
338 | AC_MSG_RESULT([$splsrc]) | |
339 | AC_MSG_CHECKING([spl build directory]) | |
8366cd6a | 340 | AS_IF([test -z "$splbuild"], [ |
6283f55e | 341 | splbuild=${splsrc} |
8366cd6a | 342 | ]) |
c9c0d073 BB |
343 | AC_MSG_RESULT([$splbuild]) |
344 | ||
345 | AC_MSG_CHECKING([spl source version]) | |
8366cd6a PS |
346 | AS_IF([test -r $splbuild/spl_config.h && |
347 | fgrep -q SPL_META_VERSION $splbuild/spl_config.h], [ | |
c9c0d073 BB |
348 | |
349 | splsrcver=`(echo "#include <spl_config.h>"; | |
b40a77ae | 350 | echo "splsrcver=SPL_META_VERSION-SPL_META_RELEASE") | |
5e612145 | 351 | cpp -I $splbuild | |
b40a77ae | 352 | grep "^splsrcver=" | tr -d \" | cut -d= -f2` |
8366cd6a | 353 | ]) |
c9c0d073 | 354 | |
8366cd6a | 355 | AS_IF([test -z "$splsrcver"], [ |
c9c0d073 BB |
356 | AC_MSG_RESULT([Not found]) |
357 | AC_MSG_ERROR([ | |
2984e0bb PS |
358 | *** Cannot determine the version of the spl source. |
359 | *** Please prepare the spl source before running this script]) | |
8366cd6a | 360 | ]) |
c9c0d073 BB |
361 | |
362 | AC_MSG_RESULT([$splsrcver]) | |
363 | ||
364 | SPL=${splsrc} | |
365 | SPL_OBJ=${splbuild} | |
366 | SPL_VERSION=${splsrcver} | |
367 | ||
368 | AC_SUBST(SPL) | |
369 | AC_SUBST(SPL_OBJ) | |
370 | AC_SUBST(SPL_VERSION) | |
371 | ||
372 | ZFS_AC_SPL_MODULE_SYMVERS | |
373 | ]) | |
374 | ||
319a99a3 ED |
375 | dnl # |
376 | dnl # Basic toolchain sanity check. | |
377 | dnl # | |
378 | AC_DEFUN([ZFS_AC_TEST_MODULE], | |
379 | [AC_MSG_CHECKING([whether modules can be built]) | |
380 | ZFS_LINUX_TRY_COMPILE([],[],[ | |
381 | AC_MSG_RESULT([yes]) | |
382 | ],[ | |
383 | AC_MSG_RESULT([no]) | |
384 | if test "x$enable_linux_builtin" != xyes; then | |
385 | AC_MSG_ERROR([*** Unable to build an empty module.]) | |
386 | else | |
387 | AC_MSG_ERROR([ | |
388 | *** Unable to build an empty module. | |
389 | *** Please run 'make scripts' inside the kernel source tree.]) | |
390 | fi | |
391 | ]) | |
392 | ]) | |
393 | ||
15805c77 BB |
394 | dnl # |
395 | dnl # Certain kernel build options are not supported. These must be | |
396 | dnl # detected at configure time and cause a build failure. Otherwise | |
397 | dnl # modules may be successfully built that behave incorrectly. | |
398 | dnl # | |
e5b85622 BB |
399 | AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [ |
400 | ||
401 | AS_IF([test "$ZFS_META_LICENSE" = GPL], [ | |
402 | AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1], | |
403 | [Define to 1 if licensed under the GPL]) | |
404 | ]) | |
405 | ||
e5b85622 BB |
406 | ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC |
407 | ]) | |
408 | ||
e5b85622 BB |
409 | dnl # |
410 | dnl # Check CONFIG_DEBUG_LOCK_ALLOC | |
411 | dnl # | |
412 | dnl # This is typically only set for debug kernels because it comes with | |
413 | dnl # a performance penalty. However, when it is set it maps the non-GPL | |
414 | dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol. | |
415 | dnl # This will cause a failure at link time which we'd rather know about | |
416 | dnl # at compile time. | |
417 | dnl # | |
418 | dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol | |
419 | dnl # with the upstream community we add a check to detect this case. | |
420 | dnl # | |
421 | AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [ | |
422 | ||
423 | ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [ | |
424 | AC_MSG_CHECKING([whether mutex_lock() is GPL-only]) | |
425 | tmp_flags="$EXTRA_KCFLAGS" | |
426 | ZFS_LINUX_TRY_COMPILE([ | |
427 | #include <linux/module.h> | |
428 | #include <linux/mutex.h> | |
429 | ||
430 | MODULE_LICENSE("$ZFS_META_LICENSE"); | |
431 | ],[ | |
432 | struct mutex lock; | |
433 | ||
434 | mutex_init(&lock); | |
435 | mutex_lock(&lock); | |
436 | mutex_unlock(&lock); | |
437 | ],[ | |
438 | AC_MSG_RESULT(no) | |
439 | ],[ | |
440 | AC_MSG_RESULT(yes) | |
441 | AC_MSG_ERROR([ | |
442 | *** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible | |
cac1f230 NB |
443 | *** with the CDDL license and will prevent the module linking stage |
444 | *** from succeeding. You must rebuild your kernel without this | |
445 | *** option enabled.]) | |
e5b85622 BB |
446 | ]) |
447 | EXTRA_KCFLAGS="$tmp_flags" | |
448 | ], []) | |
c9c0d073 BB |
449 | ]) |
450 | ||
451 | dnl # | |
452 | dnl # ZFS_LINUX_CONFTEST | |
453 | dnl # | |
454 | AC_DEFUN([ZFS_LINUX_CONFTEST], [ | |
455 | cat confdefs.h - <<_ACEOF >conftest.c | |
456 | $1 | |
457 | _ACEOF | |
458 | ]) | |
459 | ||
460 | dnl # | |
461 | dnl # ZFS_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
462 | dnl # | |
463 | m4_define([ZFS_LANG_PROGRAM], [ | |
464 | $1 | |
465 | int | |
466 | main (void) | |
467 | { | |
468 | dnl Do *not* indent the following line: there may be CPP directives. | |
469 | dnl Don't move the `;' right after for the same reason. | |
470 | $2 | |
471 | ; | |
472 | return 0; | |
473 | } | |
474 | ]) | |
475 | ||
476 | dnl # | |
477 | dnl # ZFS_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
478 | dnl # | |
479 | AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ | |
480 | m4_ifvaln([$1], [ZFS_LINUX_CONFTEST([$1])]) | |
fc88a6dd | 481 | rm -Rf build && mkdir -p build && touch build/conftest.mod.c |
c9c0d073 | 482 | echo "obj-m := conftest.o" >build/Makefile |
fc88a6dd ED |
483 | modpost_flag='' |
484 | test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage | |
c9c0d073 | 485 | AS_IF( |
fc88a6dd | 486 | [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])], |
c9c0d073 BB |
487 | [$4], |
488 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
489 | ) | |
490 | rm -Rf build | |
491 | ]) | |
492 | ||
493 | dnl # | |
494 | dnl # ZFS_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
495 | dnl # | |
496 | AC_DEFUN([ZFS_LINUX_TRY_COMPILE], | |
497 | [ZFS_LINUX_COMPILE_IFELSE( | |
498 | [AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])], | |
499 | [modules], | |
500 | [test -s build/conftest.o], | |
501 | [$3], [$4]) | |
502 | ]) | |
503 | ||
504 | dnl # | |
505 | dnl # ZFS_LINUX_CONFIG | |
506 | dnl # | |
507 | AC_DEFUN([ZFS_LINUX_CONFIG], | |
508 | [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1]) | |
509 | ZFS_LINUX_TRY_COMPILE([ | |
0da78696 | 510 | #include <linux/module.h> |
c9c0d073 BB |
511 | ],[ |
512 | #ifndef CONFIG_$1 | |
513 | #error CONFIG_$1 not #defined | |
514 | #endif | |
515 | ],[ | |
516 | AC_MSG_RESULT([yes]) | |
517 | $2 | |
518 | ],[ | |
519 | AC_MSG_RESULT([no]) | |
520 | $3 | |
521 | ]) | |
522 | ]) | |
523 | ||
524 | dnl # | |
525 | dnl # ZFS_CHECK_SYMBOL_EXPORT | |
526 | dnl # check symbol exported or not | |
527 | dnl # | |
70574182 | 528 | AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ |
c9c0d073 BB |
529 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
530 | $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null | |
531 | rc=$? | |
70574182 | 532 | if test $rc -ne 0; then |
c9c0d073 BB |
533 | export=0 |
534 | for file in $2; do | |
70574182 ED |
535 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
536 | "$LINUX/$file" 2>/dev/null | |
c9c0d073 | 537 | rc=$? |
70574182 | 538 | if test $rc -eq 0; then |
8366cd6a PS |
539 | export=1 |
540 | break; | |
70574182 | 541 | fi |
c9c0d073 | 542 | done |
70574182 | 543 | if test $export -eq 0; then : |
c9c0d073 | 544 | $4 |
70574182 | 545 | else : |
c9c0d073 | 546 | $3 |
70574182 ED |
547 | fi |
548 | else : | |
c9c0d073 | 549 | $3 |
70574182 ED |
550 | fi |
551 | ]) | |
552 | ||
553 | dnl # | |
554 | dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL | |
555 | dnl # like ZFS_LINUX_TRY_COMPILE, except ZFS_CHECK_SYMBOL_EXPORT | |
556 | dnl # is called if not compiling for builtin | |
557 | dnl # | |
558 | AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ | |
559 | ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) | |
560 | if test $rc -ne 0; then : | |
561 | $6 | |
562 | else | |
563 | if test "x$enable_linux_builtin" != xyes; then | |
564 | ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) | |
565 | fi | |
566 | if test $rc -ne 0; then : | |
567 | $6 | |
568 | else : | |
569 | $5 | |
570 | fi | |
571 | fi | |
c9c0d073 | 572 | ]) |