src/cf/linux-test4.m4

   1 AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
   2 AC_MSG_CHECKING(for linux/completion.h existance)
   3 save_CPPFLAGS="$CPPFLAGS"
   4 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
   5 AC_CACHE_VAL(ac_cv_linux_completion_h_exists,
   6 [
   7 AC_TRY_COMPILE(
   8 [#include <linux/completion.h>
   9 #include <linux/version.h>],
  10 [struct completion _c;
  11 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,8)
  12 lose
  13 #endif
  14 ],
  15 ac_cv_linux_completion_h_exists=yes,
  16 ac_cv_linux_completion_h_exists=no)])
  17 AC_MSG_RESULT($ac_cv_linux_completion_h_exists)
  18 CPPFLAGS="$save_CPPFLAGS"])
  19
  20
  21 AC_DEFUN([LINUX_DEFINES_FOR_EACH_PROCESS], [
  22 AC_MSG_CHECKING(for defined for_each_process)
  23 save_CPPFLAGS="$CPPFLAGS"
  24 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
  25 AC_CACHE_VAL(ac_cv_linux_defines_for_each_process,
  26 [
  27 AC_TRY_COMPILE(
  28 [#include <linux/sched.h>],
  29 [#ifndef for_each_process(p)
  30 #error for_each_process not defined
  31 #endif],
  32 ac_cv_linux_defines_for_each_process=yes,
  33 ac_cv_linux_defines_for_each_process=no)])
  34 AC_MSG_RESULT($ac_cv_linux_defines_for_each_process)
  35 CPPFLAGS="$save_CPPFLAGS"])
  36
  37
  38 AC_DEFUN([LINUX_DEFINES_PREV_TASK], [
  39 AC_MSG_CHECKING(for defined prev_task)
  40 save_CPPFLAGS="$CPPFLAGS"
  41 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
  42 AC_CACHE_VAL(ac_cv_linux_defines_prev_task,
  43 [
  44 AC_TRY_COMPILE(
  45 [#include <linux/sched.h>],
  46 [#ifndef prev_task(p)
  47 #error prev_task not defined
  48 #endif],
  49 ac_cv_linux_defines_prev_task=yes,
  50 ac_cv_linux_defines_prev_task=no)])
  51 AC_MSG_RESULT($ac_cv_linux_defines_prev_task)
  52 CPPFLAGS="$save_CPPFLAGS"])
  53
  54
  55 AC_DEFUN([LINUX_EXPORTS_INIT_MM], [
  56 AC_MSG_CHECKING(for exported init_mm)
  57 save_CPPFLAGS="$CPPFLAGS"
  58 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
  59 AC_CACHE_VAL(ac_cv_linux_exports_init_mm,
  60 [
  61 AC_TRY_COMPILE(
  62 [#include <linux/modversions.h>],
  63 [#ifndef __ver_init_mm
  64 #error init_mm not exported
  65 #endif],
  66 ac_cv_linux_exports_init_mm=yes,
  67 ac_cv_linux_exports_init_mm=no)])
  68 AC_MSG_RESULT($ac_cv_linux_exports_init_mm)
  69 CPPFLAGS="$save_CPPFLAGS"])
  70
  71
  72 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_ADDRESS], [
  73 AC_MSG_CHECKING(for exported kallsyms_address_to_symbol)
  74 save_CPPFLAGS="$CPPFLAGS"
  75 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
  76 AC_CACHE_VAL(ac_cv_linux_exports_kallsyms_address,
  77 [
  78 AC_TRY_COMPILE(
  79 [#include <linux/modversions.h>],
  80 [#ifndef __ver_kallsyms_address_to_symbol
  81 #error kallsyms_address_to_symbol not exported
  82 #endif],
  83 ac_cv_linux_exports_kallsyms_address=yes,
  84 ac_cv_linux_exports_kallsyms_address=no)])
  85 AC_MSG_RESULT($ac_cv_linux_exports_kallsyms_address)
  86 CPPFLAGS="$save_CPPFLAGS"])
  87
  88
  89 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_SYMBOL], [
  90 AC_MSG_CHECKING(for exported kallsyms_symbol_to_address)
  91 save_CPPFLAGS="$CPPFLAGS"
  92 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
  93 AC_CACHE_VAL(ac_cv_linux_exports_kallsyms_symbol,
  94 [
  95 AC_TRY_COMPILE(
  96 [#include <linux/modversions.h>],
  97 [#ifndef __ver_kallsyms_symbol_to_address
  98 #error kallsyms_symbol_to_address not exported
  99 #endif],
 100 ac_cv_linux_exports_kallsyms_symbol=yes,
 101 ac_cv_linux_exports_kallsyms_symbol=no)])
 102 AC_MSG_RESULT($ac_cv_linux_exports_kallsyms_symbol)
 103 CPPFLAGS="$save_CPPFLAGS"])
 104
 105
 106 AC_DEFUN([LINUX_EXPORTS_SYS_CALL_TABLE], [
 107 AC_MSG_CHECKING(for exported sys_call_table)
 108 save_CPPFLAGS="$CPPFLAGS"
 109 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 110 AC_CACHE_VAL(ac_cv_linux_exports_sys_call_table,
 111 [
 112 AC_TRY_COMPILE(
 113 [#include <linux/modversions.h>],
 114 [#ifndef __ver_sys_call_table
 115 #error sys_call_table not exported
 116 #endif],
 117 ac_cv_linux_exports_sys_call_table=yes,
 118 ac_cv_linux_exports_sys_call_table=no)])
 119 AC_MSG_RESULT($ac_cv_linux_exports_sys_call_table)
 120 CPPFLAGS="$save_CPPFLAGS"])
 121
 122
 123 AC_DEFUN([LINUX_EXPORTS_IA32_SYS_CALL_TABLE], [
 124 AC_MSG_CHECKING(for exported ia32_sys_call_table)
 125 save_CPPFLAGS="$CPPFLAGS"
 126 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 127 AC_CACHE_VAL(ac_cv_linux_exports_ia32_sys_call_table,
 128 [
 129 AC_TRY_COMPILE(
 130 [#include <linux/modversions.h>],
 131 [#ifndef __ver_ia32_sys_call_table
 132 #error ia32_sys_call_table not exported
 133 #endif],
 134 ac_cv_linux_exports_ia32_sys_call_table=yes,
 135 ac_cv_linux_exports_ia32_sys_call_table=no)])
 136 AC_MSG_RESULT($ac_cv_linux_exports_ia32_sys_call_table)
 137 CPPFLAGS="$save_CPPFLAGS"])
 138
 139
 140 AC_DEFUN([LINUX_EXPORTS_SYS_CHDIR], [
 141 AC_MSG_CHECKING(for exported sys_chdir)
 142 save_CPPFLAGS="$CPPFLAGS"
 143 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 144 AC_CACHE_VAL(ac_cv_linux_exports_sys_chdir,
 145 [
 146 AC_TRY_COMPILE(
 147 [#include <linux/modversions.h>],
 148 [#ifndef __ver_sys_chdir
 149 #error sys_chdir not exported
 150 #endif],
 151 ac_cv_linux_exports_sys_chdir=yes,
 152 ac_cv_linux_exports_sys_chdir=no)])
 153 AC_MSG_RESULT($ac_cv_linux_exports_sys_chdir)
 154 CPPFLAGS="$save_CPPFLAGS"])
 155
 156
 157 AC_DEFUN([LINUX_EXPORTS_SYS_CLOSE], [
 158 AC_MSG_CHECKING(for exported sys_close)
 159 save_CPPFLAGS="$CPPFLAGS"
 160 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 161 AC_CACHE_VAL(ac_cv_linux_exports_sys_close,
 162 [
 163 AC_TRY_COMPILE(
 164 [#include <linux/modversions.h>],
 165 [#ifndef __ver_sys_close
 166 #error sys_close not exported
 167 #endif],
 168 ac_cv_linux_exports_sys_close=yes,
 169 ac_cv_linux_exports_sys_close=no)])
 170 AC_MSG_RESULT($ac_cv_linux_exports_sys_close)
 171 CPPFLAGS="$save_CPPFLAGS"])
 172
 173
 174 AC_DEFUN([LINUX_EXPORTS_SYS_WAIT4], [
 175 AC_MSG_CHECKING(for exported sys_wait4)
 176 save_CPPFLAGS="$CPPFLAGS"
 177 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 178 AC_CACHE_VAL(ac_cv_linux_exports_sys_wait4,
 179 [
 180 AC_TRY_COMPILE(
 181 [#include <linux/modversions.h>],
 182 [#ifndef __ver_sys_wait4
 183 #error sys_wait4 not exported
 184 #endif],
 185 ac_cv_linux_exports_sys_wait4=yes,
 186 ac_cv_linux_exports_sys_wait4=no)])
 187 AC_MSG_RESULT($ac_cv_linux_exports_sys_wait4)
 188 CPPFLAGS="$save_CPPFLAGS"])
 189
 190
 191 AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
 192 AC_MSG_CHECKING(for exported tasklist_lock)
 193 save_CPPFLAGS="$CPPFLAGS"
 194 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 195 AC_CACHE_VAL(ac_cv_linux_exports_tasklist_lock,
 196 [
 197 AC_TRY_COMPILE(
 198 [#include <linux/modversions.h>],
 199 [#ifndef __ver_tasklist_lock
 200 #error tasklist_lock not exported
 201 #endif],
 202 ac_cv_linux_exports_tasklist_lock=yes,
 203 ac_cv_linux_exports_tasklist_lock=no)])
 204 AC_MSG_RESULT($ac_cv_linux_exports_tasklist_lock)
 205 CPPFLAGS="$save_CPPFLAGS"])
 206
 207
 208 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_CDEV], [
 209 AC_MSG_CHECKING(for i_cdev in struct inode)
 210 save_CPPFLAGS="$CPPFLAGS"
 211 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 212 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_cdev,
 213 [
 214 AC_TRY_COMPILE(
 215 [#include <linux/fs.h>],
 216 [struct inode _inode;
 217 printf("%d\n", _inode.i_cdev);],
 218 ac_cv_linux_fs_struct_inode_has_i_cdev=yes,
 219 ac_cv_linux_fs_struct_inode_has_i_cdev=no)])
 220 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_cdev)
 221 CPPFLAGS="$save_CPPFLAGS"])
 222
 223
 224 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_DEVICES], [
 225 AC_MSG_CHECKING(for i_devices in struct inode)
 226 save_CPPFLAGS="$CPPFLAGS"
 227 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 228 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_cdev,
 229 [
 230 AC_TRY_COMPILE(
 231 [#include <linux/fs.h>],
 232 [struct inode _inode;
 233 printf("%d\n", _inode.i_devices);],
 234 ac_cv_linux_fs_struct_inode_has_i_devices=yes,
 235 ac_cv_linux_fs_struct_inode_has_i_devices=no)])
 236 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_devices)
 237 CPPFLAGS="$save_CPPFLAGS"])
 238
 239
 240 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_DIRTY_DATA_BUFFERS], [
 241 AC_MSG_CHECKING(for i_dirty_data_buffers in struct inode)
 242 save_CPPFLAGS="$CPPFLAGS"
 243 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 244 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers,
 245 [
 246 AC_TRY_COMPILE(
 247 [#include <linux/fs.h>],
 248 [struct inode _inode;
 249 printf("%d\n", _inode.i_dirty_data_buffers);],
 250 ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers=yes,
 251 ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers=no)])
 252 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers)
 253 CPPFLAGS="$save_CPPFLAGS"])
 254
 255
 256 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_MAPPING_OVERLOAD], [
 257 AC_MSG_CHECKING(for i_mapping_overload in struct inode)
 258 save_CPPFLAGS="$CPPFLAGS"
 259 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 260 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_mapping_overload,
 261 [
 262 AC_TRY_COMPILE(
 263 [#include <linux/fs.h>],
 264 [struct inode _inode;
 265 printf("%d\n", _inode.i_mapping_overload);],
 266 ac_cv_linux_fs_struct_inode_has_i_mapping_overload=yes,
 267 ac_cv_linux_fs_struct_inode_has_i_mapping_overload=no)])
 268 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_mapping_overload)
 269 CPPFLAGS="$save_CPPFLAGS"])
 270
 271
 272 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_MMAP_SHARED], [
 273 AC_MSG_CHECKING(for i_mmap_shared in struct inode)
 274 save_CPPFLAGS="$CPPFLAGS"
 275 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 276 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_mmap_shared,
 277 [
 278 AC_TRY_COMPILE(
 279 [#include <linux/fs.h>],
 280 [struct inode _inode;
 281 printf("%d\n", _inode.i_mmap_shared);],
 282 ac_cv_linux_fs_struct_inode_has_i_mmap_shared=yes,
 283 ac_cv_linux_fs_struct_inode_has_i_mmap_shared=no)])
 284 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_mmap_shared)
 285 CPPFLAGS="$save_CPPFLAGS"])
 286
 287
 288 AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_SECURITY], [
 289 AC_MSG_CHECKING(for i_security in struct inode)
 290 save_CPPFLAGS="$CPPFLAGS"
 291 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 292 AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_security,
 293 [
 294 AC_TRY_COMPILE(
 295 [#include <linux/fs.h>],
 296 [struct inode _inode;
 297 printf("%d\n", _inode.i_security);],
 298 ac_cv_linux_fs_struct_inode_has_i_security=yes,
 299 ac_cv_linux_fs_struct_inode_has_i_security=no)])
 300 AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_security)
 301 CPPFLAGS="$save_CPPFLAGS"])
 302
 303
 304 AC_DEFUN([LINUX_RECALC_SIGPENDING_ARG_TYPE],[
 305 AC_MSG_CHECKING(for recalc_sigpending arg type)
 306 save_CPPFLAGS="$CPPFLAGS"
 307 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 308 AC_CACHE_VAL(ac_cv_linux_func_recalc_sigpending_takes_void,
 309 [
 310 AC_TRY_COMPILE(
 311 [#include <linux/sched.h>],
 312 [recalc_sigpending();],
 313 ac_cv_linux_func_recalc_sigpending_takes_void=yes,
 314 ac_cv_linux_func_recalc_sigpending_takes_void=no)])
 315 AC_MSG_RESULT($ac_cv_linux_func_recalc_sigpending_takes_void)
 316 CPPFLAGS="$save_CPPFLAGS"])
 317
 318
 319 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_PARENT], [
 320 AC_MSG_CHECKING(for parent in struct task_struct)
 321 save_CPPFLAGS="$CPPFLAGS"
 322 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 323 AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_parent,
 324 [
 325 AC_TRY_COMPILE(
 326 [#include <linux/sched.h>],
 327 [struct task_struct _tsk;
 328 printf("%d\n", _tsk.parent);],
 329 ac_cv_linux_sched_struct_task_struct_has_parent=yes,
 330 ac_cv_linux_sched_struct_task_struct_has_parent=no)])
 331 AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_parent)
 332 CPPFLAGS="$save_CPPFLAGS"])
 333
 334
 335 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT], [
 336 AC_MSG_CHECKING(for real_parent in struct task_struct)
 337 save_CPPFLAGS="$CPPFLAGS"
 338 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 339 AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_real_parent,
 340 [
 341 AC_TRY_COMPILE(
 342 [#include <linux/sched.h>],
 343 [struct task_struct _tsk;
 344 printf("%d\n", _tsk.real_parent);],
 345 ac_cv_linux_sched_struct_task_struct_has_real_parent=yes,
 346 ac_cv_linux_sched_struct_task_struct_has_real_parent=no)])
 347 AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_real_parent)
 348 CPPFLAGS="$save_CPPFLAGS"])
 349
 350
 351 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIG], [
 352 AC_MSG_CHECKING(for sig in struct task_struct)
 353 save_CPPFLAGS="$CPPFLAGS"
 354 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 355 AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sig,
 356 [
 357 AC_TRY_COMPILE(
 358 [#include <linux/sched.h>],
 359 [struct task_struct _tsk;
 360 printf("%d\n", _tsk.sig);],
 361 ac_cv_linux_sched_struct_task_struct_has_sig=yes,
 362 ac_cv_linux_sched_struct_task_struct_has_sig=no)])
 363 AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sig)
 364 CPPFLAGS="$save_CPPFLAGS"])
 365
 366 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK], [
 367 AC_MSG_CHECKING(for sigmask_lock in struct task_struct)
 368 save_CPPFLAGS="$CPPFLAGS"
 369 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 370 AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sigmask_lock,
 371 [
 372 AC_TRY_COMPILE(
 373 [#include <linux/sched.h>],
 374 [struct task_struct _tsk;
 375 printf("%d\n", _tsk.sigmask_lock);],
 376 ac_cv_linux_sched_struct_task_struct_has_sigmask_lock=yes,
 377 ac_cv_linux_sched_struct_task_struct_has_sigmask_lock=no)])
 378 AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sigmask_lock)
 379 CPPFLAGS="$save_CPPFLAGS"])
 380
 381 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGHAND], [
 382 AC_MSG_CHECKING(for sighand in struct task_struct)
 383 save_CPPFLAGS="$CPPFLAGS"
 384 CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
 385 AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sighand,
 386 [
 387 AC_TRY_COMPILE(
 388 [#include <linux/sched.h>],
 389 [struct task_struct _tsk;
 390 printf("%d\n", _tsk.sighand);],
 391 ac_cv_linux_sched_struct_task_struct_has_sighand=yes,
 392 ac_cv_linux_sched_struct_task_struct_has_sighand=no)])
 393 AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sighand)
 394 CPPFLAGS="$save_CPPFLAGS"])