source4/build/m4/rewrite.m4

   1 dnl Checks for programs.
   2 dnl Unique-to-Samba variables we'll be playing with.
   3
   4 AC_SUBST(SHLIBEXT)
   5 AC_SUBST(LDSHFLAGS)
   6 AC_SUBST(SONAMEFLAG)
   7 AC_SUBST(DYNEXP)
   8 AC_SUBST(PICFLAG)
   9
  10 AC_SYS_LARGEFILE
  11
  12 #
  13 # Config CPPFLAG settings for strange OS's that must be set
  14 # before other tests.
  15 #
  16 case "$host_os" in
  17 # Try to work out if this is the native HPUX compiler that uses the -Ae flag.
  18     *hpux*)
  19       AC_PROG_CC_FLAG(Ae)
  20       # mmap on HPUX is completely broken...
  21       AC_DEFINE(MMAP_BLACKLIST, 1, [Whether MMAP is broken])
  22       if test $ac_cv_prog_cc_Ae = yes; then
  23         CPPFLAGS="$CPPFLAGS -Ae"
  24       fi
  25     ;;
  26 #
  27 # VOS may need to have POSIX support and System V compatibility enabled.
  28 #
  29     *vos*)
  30           case "$CPPFLAGS" in
  31               *-D_POSIX_C_SOURCE*)
  32                 ;;
  33           *)
  34                 CPPFLAGS="$CPPFLAGS -D_POSIX_C_SOURCE=200112L"
  35                 AC_DEFINE(_POSIX_C_SOURCE, 200112L, [Whether to enable POSIX support])
  36                 ;;
  37           esac
  38           case "$CPPFLAGS" in
  39              *-D_SYSV*|*-D_SVID_SOURCE*)
  40                 ;;
  41              *)
  42                 CPPFLAGS="$CPPFLAGS -D_SYSV"
  43                 AC_DEFINE(_SYSV, 1, [Whether to enable System V compatibility])
  44           esac
  45     ;;
  46
  47 esac
  48
  49
  50 AC_HEADER_DIRENT
  51 AC_HEADER_TIME
  52 AC_HEADER_SYS_WAIT
  53 AC_CHECK_HEADERS(sys/select.h fcntl.h sys/fcntl.h sys/time.h stdarg.h)
  54 AC_CHECK_HEADERS(utime.h grp.h sys/id.h limits.h compat.h math.h)
  55 AC_CHECK_HEADERS(ctype.h sys/wait.h sys/resource.h sys/ioctl.h sys/ipc.h sys/mode.h)
  56 AC_CHECK_HEADERS(sys/mman.h sys/filio.h sys/priv.h sys/shm.h string.h strings.h stdlib.h)
  57 AC_CHECK_HEADERS(sys/fs/s5param.h sys/filsys.h termios.h termio.h)
  58 AC_CHECK_HEADERS(fnmatch.h pwd.h sys/termio.h sys/time.h)
  59 AC_CHECK_HEADERS(locale.h shadow.h)
  60 AC_CHECK_HEADERS(nss.h nss_common.h ns_api.h sys/security.h)
  61 AC_CHECK_HEADERS(sys/acl.h)
  62
  63 AC_CHECK_HEADERS(sys/capability.h)
  64
  65
  66 AC_TYPE_SIGNAL
  67 AC_TYPE_UID_T
  68 AC_TYPE_MODE_T
  69 AC_TYPE_OFF_T
  70 AC_TYPE_SIZE_T
  71 AC_TYPE_PID_T
  72 AC_STRUCT_ST_RDEV
  73 AC_DIRENT_D_OFF
  74 AC_CHECK_TYPE(ino_t,unsigned)
  75 AC_CHECK_TYPE(loff_t,off_t)
  76 AC_CHECK_TYPE(offset_t,loff_t)
  77 AC_CHECK_TYPES(long long)
  78
  79
  80 AC_CACHE_CHECK([for sig_atomic_t type],samba_cv_sig_atomic_t, [
  81     AC_TRY_COMPILE([
  82 #include <sys/types.h>
  83 #if STDC_HEADERS
  84 #include <stdlib.h>
  85 #include <stddef.h>
  86 #endif
  87 #include <signal.h>],[sig_atomic_t i = 0],
  88         samba_cv_sig_atomic_t=yes,samba_cv_sig_atomic_t=no)])
  89 if test x"$samba_cv_sig_atomic_t" = x"yes"; then
  90    AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type])
  91 fi
  92
  93 AC_FUNC_MEMCMP
  94
  95 AC_CHECK_FUNCS(setsid pipe crypt16 getauthuid)
  96 AC_CHECK_FUNCS(strftime sigprocmask sigblock sigaction)
  97 AC_CHECK_FUNCS(setgroups sysconf getpwanam srandom random srand rand usleep)
  98 AC_CHECK_FUNCS(backtrace setbuffer)
  99
 100 AC_SUBST(BLDSHARED)
 101 # Assume non-shared by default and override below
 102 BLDSHARED="false"
 103
 104 # these are the defaults, good for lots of systems
 105 DYNEXP=
 106 HOST_OS="$host_os"
 107 LDSHFLAGS="-shared"
 108 SONAMEFLAG=""
 109 SHLD="\${CC}"
 110 PICFLAG=""
 111 PICSUFFIX="po"
 112 SHLIBEXT="so"
 113
 114 AC_MSG_CHECKING([ability to build shared libraries])
 115
 116 # and these are for particular systems
 117 case "$host_os" in
 118         *linux*)   AC_DEFINE(LINUX,1,[Whether the host os is linux])
 119                 BLDSHARED="true"
 120                 LDSHFLAGS="-shared"
 121                 DYNEXP="-Wl,--export-dynamic"
 122                 PICFLAG="-fPIC"
 123                 SONAMEFLAG="-Wl,-soname="
 124                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 125                 ;;
 126         *solaris*) AC_DEFINE(SUNOS5,1,[Whether the host os is solaris])
 127                 BLDSHARED="true"
 128                 LDSHFLAGS="-G"
 129                 if test "${GCC}" = "yes"; then
 130                         PICFLAG="-fPIC"
 131                         if test "${ac_cv_prog_gnu_ld}" = "yes"; then
 132                                 DYNEXP="-Wl,-E"
 133                         fi
 134                 else
 135                         PICFLAG="-KPIC"
 136                         ## ${CFLAGS} added for building 64-bit shared
 137                         ## libs using Sun's Compiler
 138                         LDSHFLAGS="-G \${CFLAGS}"
 139                         PICSUFFIX="po.o"
 140                 fi
 141                 AC_DEFINE(STAT_ST_BLOCKSIZE,512,[The size of a block])
 142                 ;;
 143         *sunos*) AC_DEFINE(SUNOS4,1,[Whether the host os is sunos4])
 144                 BLDSHARED="true"
 145                 LDSHFLAGS="-G"
 146                 PICFLAG="-KPIC"   # Is this correct for SunOS
 147                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 148                 ;;
 149         *netbsd* | *freebsd*)  BLDSHARED="true"
 150                 LDSHFLAGS="-shared"
 151                 DYNEXP="-Wl,--export-dynamic"
 152                 PICFLAG="-fPIC -DPIC"
 153                 AC_DEFINE(STAT_ST_BLOCKSIZE,512,[The size of a block])
 154                 ;;
 155         *openbsd*)  BLDSHARED="true"
 156                 LDSHFLAGS="-shared"
 157                 DYNEXP="-Wl,-Bdynamic"
 158                 PICFLAG="-fPIC"
 159                 AC_DEFINE(STAT_ST_BLOCKSIZE,512,[The size of a block])
 160                 ;;
 161         *irix*) AC_DEFINE(IRIX,1,[Whether the host os is irix])
 162                 ATTEMPT_WRAP32_BUILD=yes
 163                 BLDSHARED="true"
 164                 LDSHFLAGS="-set_version sgi1.0 -shared"
 165                 SONAMEFLAG="-soname "
 166                 SHLD="\${LD}"
 167                 if test "${GCC}" = "yes"; then
 168                         PICFLAG="-fPIC"
 169                 else
 170                         PICFLAG="-KPIC"
 171                 fi
 172                 AC_DEFINE(STAT_ST_BLOCKSIZE,512,[The size of a block])
 173                 ;;
 174         *aix*) AC_DEFINE(AIX,1,[Whether the host os is aix])
 175                 BLDSHARED="true"
 176                 LDSHFLAGS="-Wl,-bexpall,-bM:SRE,-bnoentry,-berok"
 177                 DYNEXP="-Wl,-brtl,-bexpall,-bbigtoc"
 178                 PICFLAG="-O2"
 179                 if test "${GCC}" != "yes"; then
 180                         ## for funky AIX compiler using strncpy()
 181                         CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000"
 182                 fi
 183
 184                 AC_DEFINE(STAT_ST_BLOCKSIZE,DEV_BSIZE,[The size of a block])
 185                 ;;
 186         *hpux*) AC_DEFINE(HPUX,1,[Whether the host os is HPUX])
 187                 SHLIBEXT="sl"
 188                 # Use special PIC flags for the native HP-UX compiler.
 189                 if test $ac_cv_prog_cc_Ae = yes; then
 190                         BLDSHARED="true"
 191                         SHLD="/usr/bin/ld"
 192                         LDSHFLAGS="-B symbolic -b -z"
 193                         SONAMEFLAG="+h "
 194                         PICFLAG="+z"
 195                 fi
 196                 DYNEXP="-Wl,-E"
 197                 AC_DEFINE(STAT_ST_BLOCKSIZE,8192,[The size of a block])
 198                 ;;
 199         *qnx*) AC_DEFINE(QNX,1,[Whether the host os is qnx])
 200                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 201                 ;;
 202         *osf*) AC_DEFINE(OSF1,1,[Whether the host os is osf1])
 203                 BLDSHARED="true"
 204                 LDSHFLAGS="-shared"
 205                 SONAMEFLAG="-Wl,-soname,"
 206                 PICFLAG="-fPIC"
 207                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 208                 ;;
 209         *sco*) AC_DEFINE(SCO,1,[Whether the host os is sco unix])
 210                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 211                 ;;
 212         *unixware*) AC_DEFINE(UNIXWARE,1,[Whether the host os is unixware])
 213                 BLDSHARED="true"
 214                 LDSHFLAGS="-shared"
 215                 SONAMEFLAG="-Wl,-soname,"
 216                 PICFLAG="-KPIC"
 217                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 218                 ;;
 219         *next2*) AC_DEFINE(NEXT2,1,[Whether the host os is NeXT v2])
 220                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 221                 ;;
 222         *dgux*) AC_CHECK_PROG( ROFF, groff, [groff -etpsR -Tascii -man])
 223                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 224                 ;;
 225         *sysv4*) AC_DEFINE(SYSV,1,[Whether this is a system V system])
 226                 case "$host" in
 227                         *-univel-*)     if [ test "$GCC" != yes ]; then
 228                                         AC_DEFINE(HAVE_MEMSET,1,[Whether memset() is available])
 229                                 fi
 230                                 LDSHFLAGS="-G"
 231                                         DYNEXP="-Bexport"
 232                         ;;
 233                         *mips-sni-sysv4*) AC_DEFINE(RELIANTUNIX,1,[Whether the host os is reliantunix]);;
 234                 esac
 235                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 236                 ;;
 237
 238         *sysv5*) AC_DEFINE(SYSV,1,[Whether this is a system V system])
 239                 if [ test "$GCC" != yes ]; then
 240                         AC_DEFINE(HAVE_MEMSET,1,[Whether memset() is available])
 241                 fi
 242                 LDSHFLAGS="-G"
 243                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 244                 ;;
 245         *-vms)
 246                 BLDSHARED="false"
 247                 LDSHFLAGS=""
 248                 ;;
 249         *vos*) AC_DEFINE(STAT_ST_BLOCKSIZE,4096)
 250                 BLDSHARED="false"
 251                 LDSHFLAGS=""
 252                 ;;
 253         *)
 254                 AC_DEFINE(STAT_ST_BLOCKSIZE,512)
 255                 ;;
 256 esac
 257 AC_MSG_RESULT($BLDSHARED)
 258 AC_MSG_CHECKING([linker flags for shared libraries])
 259 AC_MSG_RESULT([$LDSHFLAGS])
 260 AC_MSG_CHECKING([compiler flags for position-independent code])
 261 AC_MSG_RESULT([$PICFLAGS])
 262
 263 #######################################################
 264 # test whether building a shared library actually works
 265 if test $BLDSHARED = true; then
 266 AC_CACHE_CHECK([whether building shared libraries actually works],
 267                [ac_cv_shlib_works],[
 268    ac_cv_shlib_works=no
 269    # try building a trivial shared library
 270    if test "$PICSUFFIX" = "po"; then
 271      $CC $CPPFLAGS $CFLAGS $PICFLAG -c -o shlib.po ${srcdir-.}/build/tests/shlib.c &&
 272        $CC $CPPFLAGS $CFLAGS `eval echo $LDSHFLAGS` -o shlib.so shlib.po &&
 273        ac_cv_shlib_works=yes
 274    else
 275      $CC $CPPFLAGS $CFLAGS $PICFLAG -c -o shlib.$PICSUFFIX ${srcdir-.}/build/tests/shlib.c &&
 276        mv shlib.$PICSUFFIX shlib.po &&
 277        $CC $CPPFLAGS $CFLAGS `eval echo $LDSHFLAGS` -o shlib.so shlib.po &&
 278        ac_cv_shlib_works=yes
 279    fi
 280    rm -f shlib.so shlib.po
 281 ])
 282 if test $ac_cv_shlib_works = no; then
 283    BLDSHARED=false
 284 fi
 285 fi
 286
 287 AC_CACHE_CHECK([for Linux kernel oplocks],samba_cv_HAVE_KERNEL_OPLOCKS_LINUX,[
 288 AC_TRY_RUN([
 289 #include <sys/types.h>
 290 #include <fcntl.h>
 291 #ifndef F_GETLEASE
 292 #define F_GETLEASE      1025
 293 #endif
 294 main() {
 295        int fd = open("/dev/null", O_RDONLY);
 296        return fcntl(fd, F_GETLEASE, 0) == -1;
 297 }
 298 ],
 299 samba_cv_HAVE_KERNEL_OPLOCKS_LINUX=yes,samba_cv_HAVE_KERNEL_OPLOCKS_LINUX=no,samba_cv_HAVE_KERNEL_OPLOCKS_LINUX=cross)])
 300 if test x"$samba_cv_HAVE_KERNEL_OPLOCKS_LINUX" = x"yes"; then
 301     AC_DEFINE(HAVE_KERNEL_OPLOCKS_LINUX,1,[Whether to use linux kernel oplocks])
 302 fi
 303
 304 AC_CACHE_CHECK([for kernel change notify support],samba_cv_HAVE_KERNEL_CHANGE_NOTIFY,[
 305 AC_TRY_RUN([
 306 #include <sys/types.h>
 307 #include <fcntl.h>
 308 #include <signal.h>
 309 #ifndef F_NOTIFY
 310 #define F_NOTIFY 1026
 311 #endif
 312 main() {
 313         exit(fcntl(open("/tmp", O_RDONLY), F_NOTIFY, 0) == -1 ?  1 : 0);
 314 }
 315 ],
 316 samba_cv_HAVE_KERNEL_CHANGE_NOTIFY=yes,samba_cv_HAVE_KERNEL_CHANGE_NOTIFY=no,samba_cv_HAVE_KERNEL_CHANGE_NOTIFY=cross)])
 317 if test x"$samba_cv_HAVE_KERNEL_CHANGE_NOTIFY" = x"yes"; then
 318     AC_DEFINE(HAVE_KERNEL_CHANGE_NOTIFY,1,[Whether kernel notifies changes])
 319 fi
 320
 321 AC_CACHE_CHECK([for kernel share modes],samba_cv_HAVE_KERNEL_SHARE_MODES,[
 322 AC_TRY_RUN([
 323 #include <sys/types.h>
 324 #include <fcntl.h>
 325 #include <signal.h>
 326 #include <sys/file.h>
 327 #ifndef LOCK_MAND
 328 #define LOCK_MAND       32
 329 #define LOCK_READ       64
 330 #endif
 331 main() {
 332         exit(flock(open("/dev/null", O_RDWR), LOCK_MAND|LOCK_READ) != 0);
 333 }
 334 ],
 335 samba_cv_HAVE_KERNEL_SHARE_MODES=yes,samba_cv_HAVE_KERNEL_SHARE_MODES=no,samba_cv_HAVE_KERNEL_SHARE_MODES=cross)])
 336 if test x"$samba_cv_HAVE_KERNEL_SHARE_MODES" = x"yes"; then
 337     AC_DEFINE(HAVE_KERNEL_SHARE_MODES,1,[Whether the kernel supports share modes])
 338 fi
 339
 340 AC_CACHE_CHECK([for IRIX kernel oplock type definitions],samba_cv_HAVE_KERNEL_OPLOCKS_IRIX,[
 341 AC_TRY_COMPILE([#include <sys/types.h>
 342 #include <fcntl.h>],
 343 [oplock_stat_t t; t.os_state = OP_REVOKE; t.os_dev = 1; t.os_ino = 1;],
 344 samba_cv_HAVE_KERNEL_OPLOCKS_IRIX=yes,samba_cv_HAVE_KERNEL_OPLOCKS_IRIX=no)])
 345 if test x"$samba_cv_HAVE_KERNEL_OPLOCKS_IRIX" = x"yes"; then
 346     AC_DEFINE(HAVE_KERNEL_OPLOCKS_IRIX,1,[Whether IRIX kernel oplock type definitions are available])
 347 fi
 348
 349
 350 AC_CACHE_CHECK([for ftruncate extend],samba_cv_HAVE_FTRUNCATE_EXTEND,[
 351 AC_TRY_RUN([#include "${srcdir-.}/build/tests/ftruncate.c"],
 352            samba_cv_HAVE_FTRUNCATE_EXTEND=yes,samba_cv_HAVE_FTRUNCATE_EXTEND=no,samba_cv_HAVE_FTRUNCATE_EXTEND=cross)])
 353 if test x"$samba_cv_HAVE_FTRUNCATE_EXTEND" = x"yes"; then
 354     AC_DEFINE(HAVE_FTRUNCATE_EXTEND,1,[Truncate extend])
 355 fi
 356
 357 AC_CACHE_CHECK([for sysconf(_SC_NGROUPS_MAX)],samba_cv_SYSCONF_SC_NGROUPS_MAX,[
 358 AC_TRY_RUN([#include <unistd.h>
 359 main() { exit(sysconf(_SC_NGROUPS_MAX) == -1 ? 1 : 0); }],
 360 samba_cv_SYSCONF_SC_NGROUPS_MAX=yes,samba_cv_SYSCONF_SC_NGROUPS_MAX=no,samba_cv_SYSCONF_SC_NGROUPS_MAX=cross)])
 361 if test x"$samba_cv_SYSCONF_SC_NGROUPS_MAX" = x"yes"; then
 362     AC_DEFINE(SYSCONF_SC_NGROUPS_MAX,1,[Whether sysconf(_SC_NGROUPS_MAX) is available])
 363 fi
 364
 365 AC_CACHE_CHECK([for working mmap],samba_cv_HAVE_MMAP,[
 366 AC_TRY_RUN([#include "${srcdir-.}/build/tests/shared_mmap.c"],
 367            samba_cv_HAVE_MMAP=yes,samba_cv_HAVE_MMAP=no,samba_cv_HAVE_MMAP=cross)])
 368 if test x"$samba_cv_HAVE_MMAP" = x"yes"; then
 369     AC_DEFINE(HAVE_MMAP,1,[Whether mmap works])
 370 fi
 371
 372 case "$host_os" in
 373 *linux*)
 374 AC_CACHE_CHECK([for broken RedHat 7.2 system header files],samba_cv_BROKEN_REDHAT_7_SYSTEM_HEADERS,[
 375 AC_TRY_COMPILE([
 376 #ifdef HAVE_SYS_VFS_H
 377 #include <sys/vfs.h>
 378 #endif
 379 #ifdef HAVE_SYS_CAPABILITY_H
 380 #include <sys/capability.h>
 381 #endif
 382 ],[int i;],
 383    samba_cv_BROKEN_REDHAT_7_SYSTEM_HEADERS=no,samba_cv_BROKEN_REDHAT_7_SYSTEM_HEADERS=yes)])
 384 if test x"$samba_cv_BROKEN_REDHAT_7_SYSTEM_HEADERS" = x"yes"; then
 385    AC_DEFINE(BROKEN_REDHAT_7_SYSTEM_HEADERS,1,[Broken RedHat 7.2 system header files])
 386 fi
 387 ;;
 388 esac
 389
 390 AC_CACHE_CHECK([for O_DIRECT flag to open(2)],samba_cv_HAVE_OPEN_O_DIRECT,[
 391 AC_TRY_COMPILE([
 392 #include <unistd.h>
 393 #ifdef HAVE_FCNTL_H
 394 #include <fcntl.h>
 395 #endif],
 396 [int fd = open("/dev/null", O_DIRECT);],
 397 samba_cv_HAVE_OPEN_O_DIRECT=yes,samba_cv_HAVE_OPEN_O_DIRECT=no)])
 398 if test x"$samba_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then
 399     AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT])
 400 fi