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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 | |
17 | ZFS_AC_KERNEL_BIO_EMPTY_BARRIER | |
2959d94a | 18 | ZFS_AC_KERNEL_BIO_FAILFAST |
f4af6bb7 BB |
19 | ZFS_AC_KERNEL_BIO_FAILFAST_DTD |
20 | ZFS_AC_KERNEL_REQ_FAILFAST_MASK | |
c9c0d073 | 21 | ZFS_AC_KERNEL_BIO_END_IO_T_ARGS |
675de5aa | 22 | ZFS_AC_KERNEL_BIO_RW_SYNC |
c9c0d073 | 23 | ZFS_AC_KERNEL_BIO_RW_SYNCIO |
675de5aa | 24 | ZFS_AC_KERNEL_REQ_SYNC |
c9c0d073 | 25 | ZFS_AC_KERNEL_BLK_END_REQUEST |
b18019d2 | 26 | ZFS_AC_KERNEL_BLK_QUEUE_FLUSH |
34037afe ED |
27 | ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS |
28 | ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS | |
29 | ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE | |
30 | ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT | |
31 | ZFS_AC_KERNEL_BLK_QUEUE_NONROT | |
30930fba | 32 | ZFS_AC_KERNEL_BLK_QUEUE_DISCARD |
c9c0d073 BB |
33 | ZFS_AC_KERNEL_BLK_FETCH_REQUEST |
34 | ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST | |
35 | ZFS_AC_KERNEL_BLK_RQ_BYTES | |
36 | ZFS_AC_KERNEL_BLK_RQ_POS | |
37 | ZFS_AC_KERNEL_BLK_RQ_SECTORS | |
38 | ZFS_AC_KERNEL_GET_DISK_RO | |
b5a28807 | 39 | ZFS_AC_KERNEL_GET_GENDISK |
c9c0d073 BB |
40 | ZFS_AC_KERNEL_RQ_IS_SYNC |
41 | ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT | |
777d4af8 | 42 | ZFS_AC_KERNEL_CONST_XATTR_HANDLER |
f9637c6c BB |
43 | ZFS_AC_KERNEL_XATTR_HANDLER_GET |
44 | ZFS_AC_KERNEL_XATTR_HANDLER_SET | |
47621f3d | 45 | ZFS_AC_KERNEL_SHOW_OPTIONS |
adcd70bd | 46 | ZFS_AC_KERNEL_FSYNC |
2c395def | 47 | ZFS_AC_KERNEL_EVICT_INODE |
ab26409d BB |
48 | ZFS_AC_KERNEL_NR_CACHED_OBJECTS |
49 | ZFS_AC_KERNEL_FREE_CACHED_OBJECTS | |
cb2d1901 | 50 | ZFS_AC_KERNEL_FALLOCATE |
ea1fdf46 | 51 | ZFS_AC_KERNEL_TRUNCATE_RANGE |
b39d3b9f | 52 | ZFS_AC_KERNEL_CREATE_UMODE_T |
ebe7e575 | 53 | ZFS_AC_KERNEL_AUTOMOUNT |
756c3e5a | 54 | ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE |
739a1a82 | 55 | ZFS_AC_KERNEL_CLEAR_INODE |
bdf4328b | 56 | ZFS_AC_KERNEL_INSERT_INODE_LOCKED |
6a0936ba | 57 | ZFS_AC_KERNEL_D_MAKE_ROOT |
055656d4 | 58 | ZFS_AC_KERNEL_D_OBTAIN_ALIAS |
df554c14 | 59 | ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE |
b3129792 | 60 | ZFS_AC_KERNEL_TRUNCATE_SETSIZE |
5c03efc3 | 61 | ZFS_AC_KERNEL_6ARGS_SECURITY_INODE_INIT_SECURITY |
166dd49d | 62 | ZFS_AC_KERNEL_CALLBACK_SECURITY_INODE_INIT_SECURITY |
2cf7f52b | 63 | ZFS_AC_KERNEL_MOUNT_NODEV |
ab26409d | 64 | ZFS_AC_KERNEL_SHRINK |
76659dc1 | 65 | ZFS_AC_KERNEL_BDI |
5547c2f1 | 66 | ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER |
28eb9213 | 67 | ZFS_AC_KERNEL_SET_NLINK |
c9c0d073 | 68 | |
8366cd6a | 69 | AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ |
6283f55e | 70 | KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" |
8366cd6a | 71 | ]) |
6283f55e BB |
72 | AC_SUBST(KERNELMAKE_PARAMS) |
73 | ||
74 | ||
c9c0d073 BB |
75 | dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other |
76 | dnl # compiler options are added by the kernel build system. | |
8a7e1cee | 77 | KERNELCPPFLAGS="$KERNELCPPFLAGS $NO_UNUSED_BUT_SET_VARIABLE" |
c9c0d073 BB |
78 | KERNELCPPFLAGS="$KERNELCPPFLAGS -DHAVE_SPL -D_KERNEL" |
79 | KERNELCPPFLAGS="$KERNELCPPFLAGS -DTEXT_DOMAIN=\\\"zfs-linux-kernel\\\"" | |
c9c0d073 | 80 | |
c9c0d073 BB |
81 | AC_SUBST(KERNELCPPFLAGS) |
82 | ]) | |
83 | ||
84 | dnl # | |
85 | dnl # Detect name used for Module.symvers file in kernel | |
86 | dnl # | |
87 | AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ | |
88 | modpost=$LINUX/scripts/Makefile.modpost | |
89 | AC_MSG_CHECKING([kernel file name for module symbols]) | |
319a99a3 | 90 | AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ |
8366cd6a | 91 | AS_IF([grep -q Modules.symvers $modpost], [ |
c9c0d073 | 92 | LINUX_SYMBOLS=Modules.symvers |
8366cd6a | 93 | ], [ |
c9c0d073 | 94 | LINUX_SYMBOLS=Module.symvers |
8366cd6a | 95 | ]) |
a60b1c0a | 96 | |
8366cd6a | 97 | AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ |
a60b1c0a BB |
98 | AC_MSG_ERROR([ |
99 | *** Please make sure the kernel devel package for your distribution | |
100 | *** is installed. If your building with a custom kernel make sure the | |
101 | *** kernel is configured, built, and the '--with-linux=PATH' configure | |
102 | *** option refers to the location of the kernel source.]) | |
8366cd6a PS |
103 | ]) |
104 | ], [ | |
c9c0d073 | 105 | LINUX_SYMBOLS=NONE |
8366cd6a | 106 | ]) |
c9c0d073 BB |
107 | AC_MSG_RESULT($LINUX_SYMBOLS) |
108 | AC_SUBST(LINUX_SYMBOLS) | |
109 | ]) | |
110 | ||
111 | dnl # | |
112 | dnl # Detect the kernel to be built against | |
113 | dnl # | |
114 | AC_DEFUN([ZFS_AC_KERNEL], [ | |
115 | AC_ARG_WITH([linux], | |
116 | AS_HELP_STRING([--with-linux=PATH], | |
117 | [Path to kernel source]), | |
118 | [kernelsrc="$withval"]) | |
119 | ||
120 | AC_ARG_WITH(linux-obj, | |
121 | AS_HELP_STRING([--with-linux-obj=PATH], | |
122 | [Path to kernel build objects]), | |
123 | [kernelbuild="$withval"]) | |
124 | ||
125 | AC_MSG_CHECKING([kernel source directory]) | |
8366cd6a PS |
126 | AS_IF([test -z "$kernelsrc"], [ |
127 | AS_IF([test -e "/lib/modules/$(uname -r)/source"], [ | |
1b94c25c BB |
128 | headersdir="/lib/modules/$(uname -r)/source" |
129 | sourcelink=$(readlink -f "$headersdir") | |
8366cd6a | 130 | ], [test -e "/lib/modules/$(uname -r)/build"], [ |
1b94c25c | 131 | headersdir="/lib/modules/$(uname -r)/build" |
c9c0d073 | 132 | sourcelink=$(readlink -f "$headersdir") |
8366cd6a | 133 | ], [ |
c9c0d073 | 134 | sourcelink=$(ls -1d /usr/src/kernels/* \ |
8366cd6a | 135 | /usr/src/linux-* \ |
c9c0d073 | 136 | 2>/dev/null | grep -v obj | tail -1) |
8366cd6a | 137 | ]) |
c9c0d073 | 138 | |
8366cd6a | 139 | AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [ |
c9c0d073 | 140 | kernelsrc=`readlink -f ${sourcelink}` |
8366cd6a | 141 | ], [ |
c9c0d073 BB |
142 | AC_MSG_RESULT([Not found]) |
143 | AC_MSG_ERROR([ | |
144 | *** Please make sure the kernel devel package for your distribution | |
145 | *** is installed then try again. If that fails you can specify the | |
146 | *** location of the kernel source with the '--with-linux=PATH' option.]) | |
8366cd6a PS |
147 | ]) |
148 | ], [ | |
149 | AS_IF([test "$kernelsrc" = "NONE"], [ | |
c9c0d073 | 150 | kernsrcver=NONE |
8366cd6a PS |
151 | ]) |
152 | ]) | |
c9c0d073 BB |
153 | |
154 | AC_MSG_RESULT([$kernelsrc]) | |
155 | AC_MSG_CHECKING([kernel build directory]) | |
8366cd6a PS |
156 | AS_IF([test -z "$kernelbuild"], [ |
157 | AS_IF([test -e "/lib/modules/$(uname -r)/build"], [ | |
1b94c25c | 158 | kernelbuild=`readlink -f /lib/modules/$(uname -r)/build` |
8366cd6a | 159 | ], [test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}], [ |
c9c0d073 | 160 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} |
8366cd6a | 161 | ], [test -d ${kernelsrc}-obj/${target_cpu}/default], [ |
70574182 | 162 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default |
8366cd6a | 163 | ], [test -d `dirname ${kernelsrc}`/build-${target_cpu}], [ |
c9c0d073 | 164 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} |
8366cd6a | 165 | ], [ |
c9c0d073 | 166 | kernelbuild=${kernelsrc} |
8366cd6a PS |
167 | ]) |
168 | ]) | |
c9c0d073 BB |
169 | AC_MSG_RESULT([$kernelbuild]) |
170 | ||
171 | AC_MSG_CHECKING([kernel source version]) | |
172 | utsrelease1=$kernelbuild/include/linux/version.h | |
173 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
174 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
8366cd6a | 175 | AS_IF([test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1], [ |
c9c0d073 | 176 | utsrelease=linux/version.h |
8366cd6a | 177 | ], [test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2], [ |
c9c0d073 | 178 | utsrelease=linux/utsrelease.h |
8366cd6a | 179 | ], [test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3], [ |
c9c0d073 | 180 | utsrelease=generated/utsrelease.h |
8366cd6a | 181 | ]) |
c9c0d073 | 182 | |
8366cd6a | 183 | AS_IF([test "$utsrelease"], [ |
c9c0d073 BB |
184 | kernsrcver=`(echo "#include <$utsrelease>"; |
185 | echo "kernsrcver=UTS_RELEASE") | | |
186 | cpp -I $kernelbuild/include | | |
187 | grep "^kernsrcver=" | cut -d \" -f 2` | |
188 | ||
8366cd6a | 189 | AS_IF([test -z "$kernsrcver"], [ |
c9c0d073 BB |
190 | AC_MSG_RESULT([Not found]) |
191 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
8366cd6a PS |
192 | ]) |
193 | ], [ | |
c9c0d073 | 194 | AC_MSG_RESULT([Not found]) |
319a99a3 ED |
195 | if test "x$enable_linux_builtin" != xyes; then |
196 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) | |
197 | else | |
198 | AC_MSG_ERROR([ | |
199 | *** Cannot find UTS_RELEASE definition. | |
200 | *** Please run 'make prepare' inside the kernel source tree.]) | |
201 | fi | |
8366cd6a | 202 | ]) |
c9c0d073 BB |
203 | |
204 | AC_MSG_RESULT([$kernsrcver]) | |
205 | ||
206 | LINUX=${kernelsrc} | |
207 | LINUX_OBJ=${kernelbuild} | |
208 | LINUX_VERSION=${kernsrcver} | |
209 | ||
210 | AC_SUBST(LINUX) | |
211 | AC_SUBST(LINUX_OBJ) | |
212 | AC_SUBST(LINUX_VERSION) | |
213 | ||
214 | ZFS_AC_MODULE_SYMVERS | |
215 | ]) | |
216 | ||
217 | dnl # | |
218 | dnl # Detect name used for the additional SPL Module.symvers file. If one | |
219 | dnl # does not exist this is likely because the SPL has been configured | |
220 | dnl # but not built. To allow recursive builds a good guess is made as to | |
221 | dnl # what this file will be named based on what it is named in the kernel | |
222 | dnl # build products. This file will first be used at link time so if | |
223 | dnl # the guess is wrong the build will fail then. This unfortunately | |
224 | dnl # means the ZFS package does not contain a reliable mechanism to | |
225 | dnl # detect symbols exported by the SPL at configure time. | |
226 | dnl # | |
227 | AC_DEFUN([ZFS_AC_SPL_MODULE_SYMVERS], [ | |
228 | AC_MSG_CHECKING([spl file name for module symbols]) | |
8366cd6a | 229 | AS_IF([test -r $SPL_OBJ/Module.symvers], [ |
c9c0d073 | 230 | SPL_SYMBOLS=Module.symvers |
8366cd6a | 231 | ], [test -r $SPL_OBJ/Modules.symvers], [ |
c9c0d073 | 232 | SPL_SYMBOLS=Modules.symvers |
8366cd6a | 233 | ], [test -r $SPL_OBJ/module/Module.symvers], [ |
6283f55e | 234 | SPL_SYMBOLS=Module.symvers |
8366cd6a | 235 | ], [test -r $SPL_OBJ/module/Modules.symvers], [ |
6283f55e | 236 | SPL_SYMBOLS=Modules.symvers |
8366cd6a | 237 | ], [ |
c9c0d073 | 238 | SPL_SYMBOLS=$LINUX_SYMBOLS |
8366cd6a | 239 | ]) |
c9c0d073 BB |
240 | |
241 | AC_MSG_RESULT([$SPL_SYMBOLS]) | |
242 | AC_SUBST(SPL_SYMBOLS) | |
243 | ]) | |
244 | ||
245 | dnl # | |
246 | dnl # Detect the SPL module to be built against | |
247 | dnl # | |
248 | AC_DEFUN([ZFS_AC_SPL], [ | |
249 | AC_ARG_WITH([spl], | |
250 | AS_HELP_STRING([--with-spl=PATH], | |
251 | [Path to spl source]), | |
252 | [splsrc="$withval"]) | |
253 | ||
254 | AC_ARG_WITH([spl-obj], | |
255 | AS_HELP_STRING([--with-spl-obj=PATH], | |
256 | [Path to spl build objects]), | |
257 | [splbuild="$withval"]) | |
258 | ||
259 | ||
260 | AC_MSG_CHECKING([spl source directory]) | |
8366cd6a | 261 | AS_IF([test -z "$splsrc"], [ |
c9c0d073 BB |
262 | sourcelink=`ls -1d /usr/src/spl-*/${LINUX_VERSION} \ |
263 | 2>/dev/null | tail -1` | |
264 | ||
8366cd6a | 265 | AS_IF([test -z "$sourcelink" || test ! -e $sourcelink], [ |
c9c0d073 | 266 | sourcelink=../spl |
8366cd6a | 267 | ]) |
c9c0d073 | 268 | |
8366cd6a | 269 | AS_IF([test -e $sourcelink], [ |
c9c0d073 | 270 | splsrc=`readlink -f ${sourcelink}` |
8366cd6a | 271 | ], [ |
c9c0d073 BB |
272 | AC_MSG_RESULT([Not found]) |
273 | AC_MSG_ERROR([ | |
274 | *** Please make sure the spl devel package for your distribution | |
275 | *** is installed then try again. If that fails you can specify the | |
276 | *** location of the spl source with the '--with-spl=PATH' option.]) | |
8366cd6a PS |
277 | ]) |
278 | ], [ | |
279 | AS_IF([test "$splsrc" = "NONE"], [ | |
c9c0d073 BB |
280 | splbuild=NONE |
281 | splsrcver=NONE | |
8366cd6a PS |
282 | ]) |
283 | ]) | |
c9c0d073 BB |
284 | |
285 | AC_MSG_RESULT([$splsrc]) | |
286 | AC_MSG_CHECKING([spl build directory]) | |
8366cd6a | 287 | AS_IF([test -z "$splbuild"], [ |
6283f55e | 288 | splbuild=${splsrc} |
8366cd6a | 289 | ]) |
c9c0d073 BB |
290 | AC_MSG_RESULT([$splbuild]) |
291 | ||
292 | AC_MSG_CHECKING([spl source version]) | |
8366cd6a PS |
293 | AS_IF([test -r $splbuild/spl_config.h && |
294 | fgrep -q SPL_META_VERSION $splbuild/spl_config.h], [ | |
c9c0d073 BB |
295 | |
296 | splsrcver=`(echo "#include <spl_config.h>"; | |
b40a77ae | 297 | echo "splsrcver=SPL_META_VERSION-SPL_META_RELEASE") | |
5e612145 | 298 | cpp -I $splbuild | |
b40a77ae | 299 | grep "^splsrcver=" | tr -d \" | cut -d= -f2` |
8366cd6a | 300 | ]) |
c9c0d073 | 301 | |
8366cd6a | 302 | AS_IF([test -z "$splsrcver"], [ |
c9c0d073 BB |
303 | AC_MSG_RESULT([Not found]) |
304 | AC_MSG_ERROR([ | |
2984e0bb PS |
305 | *** Cannot determine the version of the spl source. |
306 | *** Please prepare the spl source before running this script]) | |
8366cd6a | 307 | ]) |
c9c0d073 BB |
308 | |
309 | AC_MSG_RESULT([$splsrcver]) | |
310 | ||
311 | SPL=${splsrc} | |
312 | SPL_OBJ=${splbuild} | |
313 | SPL_VERSION=${splsrcver} | |
314 | ||
315 | AC_SUBST(SPL) | |
316 | AC_SUBST(SPL_OBJ) | |
317 | AC_SUBST(SPL_VERSION) | |
318 | ||
319 | ZFS_AC_SPL_MODULE_SYMVERS | |
320 | ]) | |
321 | ||
319a99a3 ED |
322 | dnl # |
323 | dnl # Basic toolchain sanity check. | |
324 | dnl # | |
325 | AC_DEFUN([ZFS_AC_TEST_MODULE], | |
326 | [AC_MSG_CHECKING([whether modules can be built]) | |
327 | ZFS_LINUX_TRY_COMPILE([],[],[ | |
328 | AC_MSG_RESULT([yes]) | |
329 | ],[ | |
330 | AC_MSG_RESULT([no]) | |
331 | if test "x$enable_linux_builtin" != xyes; then | |
332 | AC_MSG_ERROR([*** Unable to build an empty module.]) | |
333 | else | |
334 | AC_MSG_ERROR([ | |
335 | *** Unable to build an empty module. | |
336 | *** Please run 'make scripts' inside the kernel source tree.]) | |
337 | fi | |
338 | ]) | |
339 | ]) | |
340 | ||
15805c77 BB |
341 | dnl # |
342 | dnl # Certain kernel build options are not supported. These must be | |
343 | dnl # detected at configure time and cause a build failure. Otherwise | |
344 | dnl # modules may be successfully built that behave incorrectly. | |
345 | dnl # | |
e5b85622 BB |
346 | AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [ |
347 | ||
348 | AS_IF([test "$ZFS_META_LICENSE" = GPL], [ | |
349 | AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1], | |
350 | [Define to 1 if licensed under the GPL]) | |
351 | ]) | |
352 | ||
353 | ZFS_AC_KERNEL_CONFIG_PREEMPT | |
354 | ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC | |
355 | ]) | |
356 | ||
c9c0d073 | 357 | dnl # |
e5b85622 | 358 | dnl # Check CONFIG_PREEMPT |
c9c0d073 | 359 | dnl # |
e5b85622 BB |
360 | dnl # Premptible kernels will be supported in the future. But at the |
361 | dnl # moment there are a few places in the code which need to be updated | |
362 | dnl # to accomidate them. Until that work occurs we should detect this | |
363 | dnl # at configure time and fail with a sensible message. Otherwise, | |
364 | dnl # people will be able to build successfully, however they will have | |
365 | dnl # stability problems. See https://github.com/zfsonlinux/zfs/issues/83 | |
c9c0d073 | 366 | dnl # |
e5b85622 | 367 | AC_DEFUN([ZFS_AC_KERNEL_CONFIG_PREEMPT], [ |
c9c0d073 | 368 | |
15805c77 BB |
369 | ZFS_LINUX_CONFIG([PREEMPT], |
370 | AC_MSG_ERROR([ | |
2984e0bb PS |
371 | *** Kernel built with CONFIG_PREEMPT which is not supported. |
372 | *** You must rebuild your kernel without this option.]), []) | |
e5b85622 | 373 | ]) |
15805c77 | 374 | |
e5b85622 BB |
375 | dnl # |
376 | dnl # Check CONFIG_DEBUG_LOCK_ALLOC | |
377 | dnl # | |
378 | dnl # This is typically only set for debug kernels because it comes with | |
379 | dnl # a performance penalty. However, when it is set it maps the non-GPL | |
380 | dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol. | |
381 | dnl # This will cause a failure at link time which we'd rather know about | |
382 | dnl # at compile time. | |
383 | dnl # | |
384 | dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol | |
385 | dnl # with the upstream community we add a check to detect this case. | |
386 | dnl # | |
387 | AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [ | |
388 | ||
389 | ZFS_LINUX_CONFIG([DEBUG_LOCK_ALLOC], [ | |
390 | AC_MSG_CHECKING([whether mutex_lock() is GPL-only]) | |
391 | tmp_flags="$EXTRA_KCFLAGS" | |
392 | ZFS_LINUX_TRY_COMPILE([ | |
393 | #include <linux/module.h> | |
394 | #include <linux/mutex.h> | |
395 | ||
396 | MODULE_LICENSE("$ZFS_META_LICENSE"); | |
397 | ],[ | |
398 | struct mutex lock; | |
399 | ||
400 | mutex_init(&lock); | |
401 | mutex_lock(&lock); | |
402 | mutex_unlock(&lock); | |
403 | ],[ | |
404 | AC_MSG_RESULT(no) | |
405 | ],[ | |
406 | AC_MSG_RESULT(yes) | |
407 | AC_MSG_ERROR([ | |
408 | *** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible | |
cac1f230 NB |
409 | *** with the CDDL license and will prevent the module linking stage |
410 | *** from succeeding. You must rebuild your kernel without this | |
411 | *** option enabled.]) | |
e5b85622 BB |
412 | ]) |
413 | EXTRA_KCFLAGS="$tmp_flags" | |
414 | ], []) | |
c9c0d073 BB |
415 | ]) |
416 | ||
417 | dnl # | |
418 | dnl # ZFS_LINUX_CONFTEST | |
419 | dnl # | |
420 | AC_DEFUN([ZFS_LINUX_CONFTEST], [ | |
421 | cat confdefs.h - <<_ACEOF >conftest.c | |
422 | $1 | |
423 | _ACEOF | |
424 | ]) | |
425 | ||
426 | dnl # | |
427 | dnl # ZFS_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
428 | dnl # | |
429 | m4_define([ZFS_LANG_PROGRAM], [ | |
430 | $1 | |
431 | int | |
432 | main (void) | |
433 | { | |
434 | dnl Do *not* indent the following line: there may be CPP directives. | |
435 | dnl Don't move the `;' right after for the same reason. | |
436 | $2 | |
437 | ; | |
438 | return 0; | |
439 | } | |
440 | ]) | |
441 | ||
442 | dnl # | |
443 | dnl # ZFS_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
444 | dnl # | |
445 | AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ | |
446 | m4_ifvaln([$1], [ZFS_LINUX_CONFTEST([$1])]) | |
fc88a6dd | 447 | rm -Rf build && mkdir -p build && touch build/conftest.mod.c |
c9c0d073 | 448 | echo "obj-m := conftest.o" >build/Makefile |
fc88a6dd ED |
449 | modpost_flag='' |
450 | test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage | |
c9c0d073 | 451 | AS_IF( |
fc88a6dd | 452 | [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 |
453 | [$4], |
454 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
455 | ) | |
456 | rm -Rf build | |
457 | ]) | |
458 | ||
459 | dnl # | |
460 | dnl # ZFS_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
461 | dnl # | |
462 | AC_DEFUN([ZFS_LINUX_TRY_COMPILE], | |
463 | [ZFS_LINUX_COMPILE_IFELSE( | |
464 | [AC_LANG_SOURCE([ZFS_LANG_PROGRAM([[$1]], [[$2]])])], | |
465 | [modules], | |
466 | [test -s build/conftest.o], | |
467 | [$3], [$4]) | |
468 | ]) | |
469 | ||
470 | dnl # | |
471 | dnl # ZFS_LINUX_CONFIG | |
472 | dnl # | |
473 | AC_DEFUN([ZFS_LINUX_CONFIG], | |
474 | [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1]) | |
475 | ZFS_LINUX_TRY_COMPILE([ | |
0da78696 | 476 | #include <linux/module.h> |
c9c0d073 BB |
477 | ],[ |
478 | #ifndef CONFIG_$1 | |
479 | #error CONFIG_$1 not #defined | |
480 | #endif | |
481 | ],[ | |
482 | AC_MSG_RESULT([yes]) | |
483 | $2 | |
484 | ],[ | |
485 | AC_MSG_RESULT([no]) | |
486 | $3 | |
487 | ]) | |
488 | ]) | |
489 | ||
490 | dnl # | |
491 | dnl # ZFS_CHECK_SYMBOL_EXPORT | |
492 | dnl # check symbol exported or not | |
493 | dnl # | |
70574182 | 494 | AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ |
c9c0d073 BB |
495 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
496 | $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null | |
497 | rc=$? | |
70574182 | 498 | if test $rc -ne 0; then |
c9c0d073 BB |
499 | export=0 |
500 | for file in $2; do | |
70574182 ED |
501 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
502 | "$LINUX/$file" 2>/dev/null | |
c9c0d073 | 503 | rc=$? |
70574182 | 504 | if test $rc -eq 0; then |
8366cd6a PS |
505 | export=1 |
506 | break; | |
70574182 | 507 | fi |
c9c0d073 | 508 | done |
70574182 | 509 | if test $export -eq 0; then : |
c9c0d073 | 510 | $4 |
70574182 | 511 | else : |
c9c0d073 | 512 | $3 |
70574182 ED |
513 | fi |
514 | else : | |
c9c0d073 | 515 | $3 |
70574182 ED |
516 | fi |
517 | ]) | |
518 | ||
519 | dnl # | |
520 | dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL | |
521 | dnl # like ZFS_LINUX_TRY_COMPILE, except ZFS_CHECK_SYMBOL_EXPORT | |
522 | dnl # is called if not compiling for builtin | |
523 | dnl # | |
524 | AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ | |
525 | ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) | |
526 | if test $rc -ne 0; then : | |
527 | $6 | |
528 | else | |
529 | if test "x$enable_linux_builtin" != xyes; then | |
530 | ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) | |
531 | fi | |
532 | if test $rc -ne 0; then : | |
533 | $6 | |
534 | else : | |
535 | $5 | |
536 | fi | |
537 | fi | |
c9c0d073 | 538 | ]) |