sim/m4/sim_ac_platform.m4

   1 dnl Copyright (C) 1997-2024 Free Software Foundation, Inc.
   2 dnl
   3 dnl This program is free software; you can redistribute it and/or modify
   4 dnl it under the terms of the GNU General Public License as published by
   5 dnl the Free Software Foundation; either version 3 of the License, or
   6 dnl (at your option) any later version.
   7 dnl
   8 dnl This program is distributed in the hope that it will be useful,
   9 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 dnl GNU General Public License for more details.
  12 dnl
  13 dnl You should have received a copy of the GNU General Public License
  14 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 dnl
  16 dnl Check for various platform settings.
  17 AC_DEFUN([SIM_AC_PLATFORM],
  18 [dnl
  19 dnl Check for common headers.
  20 dnl NB: You can assume C11 headers exist.
  21 dnl NB: We use gnulib from ../gnulib/, so we don't probe headers it provides.
  22 AC_CHECK_HEADERS_ONCE(m4_flatten([
  23   dlfcn.h
  24   fcntl.h
  25   fpu_control.h
  26   termios.h
  27   utime.h
  28   linux/if_tun.h
  29   linux/mii.h
  30   linux/types.h
  31   net/if.h
  32   netinet/in.h
  33   netinet/tcp.h
  34   sys/ioctl.h
  35   sys/mman.h
  36   sys/mount.h
  37   sys/param.h
  38   sys/resource.h
  39   sys/socket.h
  40   sys/statfs.h
  41   sys/termio.h
  42   sys/termios.h
  43   sys/types.h
  44   sys/vfs.h
  45 ]))
  46 AC_HEADER_DIRENT
  47
  48 dnl NB: We use gnulib from ../gnulib/, so we don't probe functions it provides.
  49 AC_CHECK_FUNCS_ONCE(m4_flatten([
  50   __setfpucw
  51   access
  52   aint
  53   anint
  54   cfgetispeed
  55   cfgetospeed
  56   cfsetispeed
  57   cfsetospeed
  58   chdir
  59   chmod
  60   dup
  61   dup2
  62   execv
  63   execve
  64   fcntl
  65   fork
  66   fstat
  67   fstatfs
  68   ftruncate
  69   getdirentries
  70   getegid
  71   geteuid
  72   getgid
  73   getpid
  74   getppid
  75   getrusage
  76   gettimeofday
  77   getuid
  78   ioctl
  79   kill
  80   link
  81   lseek
  82   lstat
  83   mkdir
  84   mmap
  85   munmap
  86   pipe
  87   posix_fallocate
  88   pread
  89   rmdir
  90   setregid
  91   setreuid
  92   setgid
  93   setuid
  94   sigaction
  95   sigprocmask
  96   sqrt
  97   stat
  98   strsignal
  99   symlink
 100   tcdrain
 101   tcflow
 102   tcflush
 103   tcgetattr
 104   tcgetpgrp
 105   tcsendbreak
 106   tcsetattr
 107   tcsetpgrp
 108   time
 109   truncate
 110   umask
 111   unlink
 112   utime
 113 ]))
 114
 115 AC_STRUCT_ST_BLKSIZE
 116 AC_STRUCT_ST_BLOCKS
 117 AC_STRUCT_ST_RDEV
 118 AC_STRUCT_TIMEZONE
 119
 120 AC_CHECK_MEMBERS([[struct stat.st_dev], [struct stat.st_ino],
 121 [struct stat.st_mode], [struct stat.st_nlink], [struct stat.st_uid],
 122 [struct stat.st_gid], [struct stat.st_rdev], [struct stat.st_size],
 123 [struct stat.st_blksize], [struct stat.st_blocks], [struct stat.st_atime],
 124 [struct stat.st_mtime], [struct stat.st_ctime]], [], [],
 125 [[#ifdef HAVE_SYS_TYPES_H
 126 #include <sys/types.h>
 127 #endif
 128 #include <sys/stat.h>]])
 129
 130 AC_CHECK_TYPES([__int128])
 131 AC_CHECK_TYPES(socklen_t, [], [],
 132 [#include <sys/types.h>
 133 #include <sys/socket.h>
 134 ])
 135
 136 AC_CHECK_SIZEOF([void *])
 137
 138 dnl Check for struct statfs.
 139 AC_CACHE_CHECK([for struct statfs],
 140   [sim_cv_struct_statfs],
 141   [AC_TRY_COMPILE([
 142 #include <sys/types.h>
 143 #ifdef HAVE_SYS_PARAM_H
 144 #include <sys/param.h>
 145 #endif
 146 #ifdef HAVE_SYS_MOUNT_H
 147 #include <sys/mount.h>
 148 #endif
 149 #ifdef HAVE_SYS_VFS_H
 150 #include <sys/vfs.h>
 151 #endif
 152 #ifdef HAVE_SYS_STATFS_H
 153 #include <sys/statfs.h>
 154 #endif], [
 155   struct statfs s;
 156 ], [sim_cv_struct_statfs="yes"], [sim_cv_struct_statfs="no"])])
 157 AS_IF([test x"sim_cv_struct_statfs" = x"yes"], [dnl
 158   AC_DEFINE(HAVE_STRUCT_STATFS, 1,
 159             [Define if struct statfs is defined in <sys/mount.h>])
 160 ])
 161
 162 dnl Some System V related checks.
 163 AC_CACHE_CHECK([if union semun defined],
 164   [sim_cv_has_union_semun],
 165   [AC_TRY_COMPILE([
 166 #include <sys/types.h>
 167 #include <sys/ipc.h>
 168 #include <sys/sem.h>], [
 169   union semun arg;
 170 ], [sim_cv_has_union_semun="yes"], [sim_cv_has_union_semun="no"])])
 171 AS_IF([test x"$sim_cv_has_union_semun" = x"yes"], [dnl
 172   AC_DEFINE(HAVE_UNION_SEMUN, 1,
 173             [Define if union semun is defined in <sys/sem.h>])
 174 ])
 175
 176 AC_CACHE_CHECK([whether System V semaphores are supported],
 177   [sim_cv_sysv_sem],
 178   [AC_TRY_COMPILE([
 179   #include <sys/types.h>
 180   #include <sys/ipc.h>
 181   #include <sys/sem.h>
 182 #ifndef HAVE_UNION_SEMUN
 183   union semun {
 184     int val;
 185     struct semid_ds *buf;
 186     ushort *array;
 187   };
 188 #endif], [
 189   union semun arg;
 190   int id = semget(IPC_PRIVATE, 1, IPC_CREAT|0400);
 191   if (id == -1)
 192     return 1;
 193   arg.val = 0; /* avoid implicit type cast to union */
 194   if (semctl(id, 0, IPC_RMID, arg) == -1)
 195     return 1;
 196 ], [sim_cv_sysv_sem="yes"], [sim_cv_sysv_sem="no"])])
 197 AS_IF([test x"$sim_cv_sysv_sem" = x"yes"], [dnl
 198   AC_DEFINE(HAVE_SYSV_SEM, 1, [Define if System V semaphores are supported])
 199 ])
 200
 201 AC_CACHE_CHECK([whether System V shared memory is supported],
 202   [sim_cv_sysv_shm],
 203   [AC_TRY_COMPILE([
 204 #include <sys/types.h>
 205 #include <sys/ipc.h>
 206 #include <sys/shm.h>], [
 207   int id = shmget(IPC_PRIVATE, 1, IPC_CREAT|0400);
 208   if (id == -1)
 209     return 1;
 210   if (shmctl(id, IPC_RMID, 0) == -1)
 211     return 1;
 212 ], [sim_cv_sysv_shm="yes"], [sim_cv_sysv_shm="no"])])
 213 AS_IF([test x"$sim_cv_sysv_shm" = x"yes"], [dnl
 214   AC_DEFINE(HAVE_SYSV_SHM, 1, [Define if System V shared memory is supported])
 215 ])
 216
 217 dnl Figure out what type of termio/termios support there is
 218 AC_CACHE_CHECK([for struct termios],
 219   [sim_cv_termios_struct],
 220   [AC_TRY_COMPILE([
 221 #include <sys/types.h>
 222 #include <sys/termios.h>], [
 223   static struct termios x;
 224   x.c_iflag = 0;
 225   x.c_oflag = 0;
 226   x.c_cflag = 0;
 227   x.c_lflag = 0;
 228   x.c_cc[NCCS] = 0;
 229 ], [sim_cv_termios_struct="yes"], [sim_cv_termios_struct="no"])])
 230 if test $sim_cv_termios_struct = yes; then
 231   AC_DEFINE([HAVE_TERMIOS_STRUCTURE], 1, [Define if struct termios exists.])
 232 fi
 233
 234 if test "$sim_cv_termios_struct" = "yes"; then
 235   AC_CACHE_VAL([sim_cv_termios_cline])
 236   AC_CHECK_MEMBER(
 237     [struct termios.c_line],
 238     [sim_cv_termios_cline="yes"],
 239     [sim_cv_termios_cline="no"], [
 240 #include <sys/types.h>
 241 #include <sys/termios.h>
 242 ])
 243   if test $sim_cv_termios_cline = yes; then
 244     AC_DEFINE([HAVE_TERMIOS_CLINE], 1, [Define if struct termios has c_line.])
 245   fi
 246 else
 247   sim_cv_termios_cline=no
 248 fi
 249
 250 if test "$sim_cv_termios_struct" != "yes"; then
 251   AC_CACHE_CHECK([for struct termio],
 252     [sim_cv_termio_struct],
 253     [AC_TRY_COMPILE([
 254 #include <sys/types.h>
 255 #include <sys/termio.h>], [
 256   static struct termio x;
 257   x.c_iflag = 0;
 258   x.c_oflag = 0;
 259   x.c_cflag = 0;
 260   x.c_lflag = 0;
 261   x.c_cc[NCC] = 0;
 262 ], [sim_cv_termio_struct="yes"], [sim_cv_termio_struct="no"])])
 263   if test $sim_cv_termio_struct = yes; then
 264     AC_DEFINE([HAVE_TERMIO_STRUCTURE], 1, [Define if struct termio exists.])
 265   fi
 266 else
 267   sim_cv_termio_struct=no
 268 fi
 269
 270 if test "$sim_cv_termio_struct" = "yes"; then
 271   AC_CACHE_VAL([sim_cv_termio_cline])
 272   AC_CHECK_MEMBER(
 273     [struct termio.c_line],
 274     [sim_cv_termio_cline="yes"],
 275     [sim_cv_termio_cline="no"], [
 276 #include <sys/types.h>
 277 #include <sys/termio.h>
 278 ])
 279   if test $sim_cv_termio_cline = yes; then
 280     AC_DEFINE([HAVE_TERMIO_CLINE], 1, [Define if struct termio has c_line.])
 281   fi
 282 else
 283   sim_cv_termio_cline=no
 284 fi
 285
 286 dnl Types used by common code
 287 AC_TYPE_GETGROUPS
 288 AC_TYPE_MODE_T
 289 AC_TYPE_OFF_T
 290 AC_TYPE_PID_T
 291 AC_TYPE_SIGNAL
 292 AC_TYPE_SIZE_T
 293 AC_TYPE_UID_T
 294
 295 LT_INIT
 296
 297 dnl Libraries.
 298 AC_SEARCH_LIBS([bind], [socket])
 299 AC_SEARCH_LIBS([gethostbyname], [nsl])
 300 AC_SEARCH_LIBS([fabs], [m])
 301 AC_SEARCH_LIBS([log2], [m])
 302
 303 AC_SEARCH_LIBS([dlopen], [dl])
 304 if test "${ac_cv_search_dlopen}" = "none required" || test "${ac_cv_lib_dl_dlopen}" = "yes"; then
 305   PKG_CHECK_MODULES(SDL, sdl2, [dnl
 306     SDL_CFLAGS="${SDL_CFLAGS} -DHAVE_SDL=2"
 307   ], [
 308     PKG_CHECK_MODULES(SDL, sdl, [dnl
 309       SDL_CFLAGS="${SDL_CFLAGS} -DHAVE_SDL=1"
 310     ], [:])
 311   ])
 312   dnl If we use SDL, we need dlopen support.
 313   AS_IF([test -n "$SDL_CFLAGS"], [dnl
 314     AS_IF([test "$ac_cv_search_dlopen" = no], [dnl
 315       AC_MSG_WARN([SDL support requires dlopen support])
 316     ])
 317   ])
 318 else
 319   SDL_CFLAGS=
 320 fi
 321 dnl We dlopen the libs at runtime, so never pass down SDL_LIBS.
 322 SDL_LIBS=
 323 AC_SUBST(SDL_CFLAGS)
 324
 325 dnl In the Cygwin environment, we need some additional flags.
 326 AC_CACHE_CHECK([for cygwin], sim_cv_os_cygwin,
 327 [AC_EGREP_CPP(lose, [
 328 #ifdef __CYGWIN__
 329 lose
 330 #endif],[sim_cv_os_cygwin=yes],[sim_cv_os_cygwin=no])])
 331
 332 dnl Keep in sync with gdb's configure.ac list.
 333 AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncurses],
 334   [TERMCAP_LIB=$ac_cv_search_tgetent], [TERMCAP_LIB=""])
 335 if test x$sim_cv_os_cygwin = xyes; then
 336   TERMCAP_LIB="${TERMCAP_LIB} -luser32"
 337 fi
 338 AC_SUBST(TERMCAP_LIB)
 339
 340 dnl We prefer the in-tree readline.  Top-level dependencies make sure
 341 dnl src/readline (if it's there) is configured before src/sim.
 342 if test -r ../readline/Makefile; then
 343   READLINE_LIB=../readline/readline/libreadline.a
 344   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 345 else
 346   AC_CHECK_LIB(readline, readline, READLINE_LIB=-lreadline,
 347                AC_ERROR([the required "readline" library is missing]), $TERMCAP_LIB)
 348   READLINE_CFLAGS=
 349 fi
 350 AC_SUBST(READLINE_LIB)
 351 AC_SUBST(READLINE_CFLAGS)
 352
 353 dnl Determine whether we have a known getopt prototype in unistd.h
 354 dnl to make sure that we have correct getopt declaration on
 355 dnl include/getopt.h.  The purpose of this is to sync with other Binutils
 356 dnl components and this logic is copied from ld/configure.ac.
 357 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
 358 AC_CACHE_VAL(sim_cv_decl_getopt_unistd_h,
 359 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
 360 sim_cv_decl_getopt_unistd_h=yes, sim_cv_decl_getopt_unistd_h=no)])
 361 AC_MSG_RESULT($sim_cv_decl_getopt_unistd_h)
 362 if test $sim_cv_decl_getopt_unistd_h = yes; then
 363   AC_DEFINE([HAVE_DECL_GETOPT], 1,
 364             [Is the prototype for getopt in <unistd.h> in the expected format?])
 365 fi
 366 ])