macros/netatalk.m4

   1 dnl Kitchen sink for configuration macros
   2
   3 dnl Whether to enable developer build
   4 AC_DEFUN([AC_DEVELOPER], [
   5     AC_MSG_CHECKING([whether to enable developer build])
   6     AC_ARG_ENABLE(
   7         developer,
   8         AS_HELP_STRING([--enable-developer], [whether to enable developer build (ABI checking)]),
   9         enable_dev=$enableval,
  10         enable_dev=no
  11     )
  12     AC_MSG_RESULT([$enable_dev])
  13     AM_CONDITIONAL(DEVELOPER, test x"$enable_dev" = x"yes")
  14 ])
  15
  16 dnl Whether to disable bundled libevent
  17 AC_DEFUN([AC_NETATALK_LIBEVENT], [
  18     AC_MSG_CHECKING([whether to use bundled libevent])
  19     AC_ARG_WITH(
  20         libevent,
  21         [AS_HELP_STRING([--with-libevent],[whether to use the bundled libevent (default: yes)])],
  22         use_bundled_libevent=$withval,
  23         use_bundled_libevent=yes
  24     )
  25     AC_ARG_WITH(
  26         libevent-header,
  27         [AS_HELP_STRING([--with-libevent-header],[path to libevent header files])],
  28         [use_bundled_libevent=no; LIBEVENT_CFLAGS=-I$withval]
  29     )
  30     AC_ARG_WITH(
  31         libevent-lib,
  32         [AS_HELP_STRING([--with-libevent-lib],[path to libevent library])],
  33         [use_bundled_libevent=no; LIBEVENT_LDFLAGS=-L$withval]
  34     )
  35     if test x"$LIBEVENT_CFLAGS" = x"-Iyes" -o x"$LIBEVENT_LDFLAGS" = x"-Lyes" ; then
  36         AC_MSG_ERROR([--with-libevent requires a path])
  37     fi
  38     AC_MSG_RESULT([$use_bundled_libevent])
  39     AC_CONFIG_SUBDIRS([libevent])
  40     AC_SUBST(LIBEVENT_CFLAGS)
  41     AC_SUBST(LIBEVENT_LDFLAGS)
  42     AM_CONDITIONAL(USE_BUILTIN_LIBEVENT, test x"$use_bundled_libevent" = x"yes")
  43 ])
  44
  45 dnl Filesystem Hierarchy Standard (FHS) compatibility
  46 AC_DEFUN([AC_NETATALK_FHS], [
  47 AC_MSG_CHECKING([whether to use Filesystem Hierarchy Standard (FHS) compatibility])
  48 AC_ARG_ENABLE(fhs,
  49         [  --enable-fhs            use Filesystem Hierarchy Standard (FHS) compatibility],[
  50         if test "$enableval" = "yes"; then
  51                 bindir="/bin"
  52                 sbindir="/sbin"
  53                 sysconfdir="/etc"
  54                 libdir="/lib"
  55                 localstatedir="/var"
  56                 mandir="/usr/share/man"
  57                 uams_path="${libdir}/netatalk"
  58                 PKGCONFDIR="${sysconfdir}"
  59                 SERVERTEXT="${localstatedir}/netatalk/msg"
  60                 use_pam_so=yes
  61                 AC_DEFINE(FHS_COMPATIBILITY, 1, [Define if you want compatibily with the FHS])
  62                 AC_MSG_RESULT([yes])
  63         else
  64                 AC_MSG_RESULT([no])
  65         fi
  66         ],[
  67                 AC_MSG_RESULT([no])
  68         ]
  69 )])
  70
  71 dnl 64bit platform check
  72 AC_DEFUN([AC_NETATALK_64BIT_LIBS], [
  73 AC_MSG_CHECKING([whether to check for 64bit libraries])
  74 # Test if the compiler is in 64bit mode
  75 echo 'int i;' > conftest.$ac_ext
  76 atalk_cv_cc_64bit_output=no
  77 if AC_TRY_EVAL(ac_compile); then
  78     case `/usr/bin/file conftest.$ac_objext` in
  79     *"ELF 64"*)
  80       atalk_cv_cc_64bit_output=yes
  81       ;;
  82     esac
  83 fi
  84 rm -rf conftest*
  85
  86 case $host_cpu:$atalk_cv_cc_64bit_output in
  87 powerpc64:yes | s390x:yes | sparc*:yes | x86_64:yes | i386:yes)
  88     case $target_os in
  89     solaris2*)
  90         AC_MSG_RESULT([yes])
  91         atalk_libname="lib/64"
  92         ;;
  93     *bsd* | dragonfly*)
  94         AC_MSG_RESULT([no])
  95         atalk_libname="lib"
  96         ;;
  97     *)
  98         AC_MSG_RESULT([yes])
  99         atalk_libname="lib64"
 100         ;;
 101     esac
 102     ;;
 103 *:*)
 104     AC_MSG_RESULT([no])
 105     atalk_libname="lib"
 106     ;;
 107 esac
 108 ])
 109
 110 dnl Check for optional admin group support
 111 AC_DEFUN([AC_NETATALK_ADMIN_GROUP], [
 112     netatalk_cv_admin_group=yes
 113     AC_MSG_CHECKING([for administrative group support])
 114     AC_ARG_ENABLE(admin-group,
 115             [  --disable-admin-group   disable admin group],[
 116             if test x"$enableval" = x"no"; then
 117                          AC_DEFINE(ADMIN_GRP, 0, [Define if the admin group should be enabled])
 118                          netatalk_cv_admin_group=no
 119                          AC_MSG_RESULT([no])
 120                 else
 121                          AC_DEFINE(ADMIN_GRP, 1, [Define if the admin group should be enabled])
 122                          AC_MSG_RESULT([yes])
 123             fi],[
 124                 AC_DEFINE(ADMIN_GRP, 1, [Define if the admin group should be enabled])
 125                 AC_MSG_RESULT([yes])
 126         ])
 127 ])
 128
 129 dnl Check for optional cracklib support
 130 AC_DEFUN([AC_NETATALK_CRACKLIB], [
 131 netatalk_cv_with_cracklib=no
 132 AC_ARG_WITH(cracklib,
 133         [  --with-cracklib[[=DICT]]  enable/set location of cracklib dictionary [[no]]],[
 134         if test "x$withval" != "xno" ; then
 135                 cracklib="$withval"
 136                 AC_CHECK_LIB(crack, main, [
 137                         AC_DEFINE(USE_CRACKLIB, 1, [Define if cracklib should be used])
 138                         LIBS="$LIBS -lcrack"
 139                         if test "$cracklib" = "yes"; then
 140                                 cracklib="/usr/$atalk_libname/cracklib_dict"
 141                         fi
 142                         AC_DEFINE_UNQUOTED(_PATH_CRACKLIB, "$cracklib",
 143                                 [path to cracklib dictionary])
 144                         AC_MSG_RESULT([setting cracklib dictionary to $cracklib])
 145                         netatalk_cv_with_cracklib=yes
 146                         ],[
 147                         AC_MSG_ERROR([cracklib not found!])
 148                         ]
 149                 )
 150         fi
 151         ]
 152 )
 153 AC_MSG_CHECKING([for cracklib support])
 154 AC_MSG_RESULT([$netatalk_cv_with_cracklib])
 155 ])
 156
 157 dnl Check whether to enable debug code
 158 AC_DEFUN([AC_NETATALK_DEBUG], [
 159 AC_MSG_CHECKING([whether to enable verbose debug code])
 160 AC_ARG_ENABLE(debug,
 161         [  --enable-debug          enable verbose debug code],[
 162         if test "$enableval" != "no"; then
 163                 if test "$enableval" = "yes"; then
 164                         AC_DEFINE(DEBUG, 1, [Define if verbose debugging information should be included])
 165                 else
 166                         AC_DEFINE_UNQUOTED(DEBUG, $enableval, [Define if verbose debugging information should be included])
 167                 fi
 168                 AC_MSG_RESULT([yes])
 169         else
 170                 AC_MSG_RESULT([no])
 171         AC_DEFINE(NDEBUG, 1, [Disable assertions])
 172         fi
 173         ],[
 174                 AC_MSG_RESULT([no])
 175         AC_DEFINE(NDEBUG, 1, [Disable assertions])
 176         ]
 177 )
 178 ])
 179
 180 dnl Check whethe to disable tickle SIGALARM stuff, which eases debugging
 181 AC_DEFUN([AC_NETATALK_DEBUGGING], [
 182 AC_MSG_CHECKING([whether to enable debugging with debuggers])
 183 AC_ARG_ENABLE(debugging,
 184         [  --enable-debugging      disable SIGALRM timers and DSI tickles (eg for debugging with gdb/dbx/...)],[
 185         if test "$enableval" != "no"; then
 186                 if test "$enableval" = "yes"; then
 187                         AC_DEFINE(DEBUGGING, 1, [Define if you want to disable SIGALRM timers and DSI tickles])
 188                 else
 189                         AC_DEFINE_UNQUOTED(DEBUGGING, $enableval, [Define if you want to disable SIGALRM timers and DSI tickles])
 190                 fi
 191                 AC_MSG_RESULT([yes])
 192         else
 193                 AC_MSG_RESULT([no])
 194         fi
 195         ],[
 196                 AC_MSG_RESULT([no])
 197         ]
 198 )
 199
 200 ])
 201
 202 dnl Check for optional shadow password support
 203 AC_DEFUN([AC_NETATALK_SHADOW], [
 204 netatalk_cv_use_shadowpw=no
 205 AC_ARG_WITH(shadow,
 206         [  --with-shadow           enable shadow password support [[auto]]],
 207         [netatalk_cv_use_shadowpw="$withval"],
 208         [netatalk_cv_use_shadowpw=auto]
 209 )
 210
 211 if test "x$netatalk_cv_use_shadowpw" != "xno"; then
 212     AC_CHECK_HEADER([shadow.h])
 213     if test x"$ac_cv_header_shadow_h" = x"yes"; then
 214         netatalk_cv_use_shadowpw=yes
 215         AC_DEFINE(SHADOWPW, 1, [Define if shadow passwords should be used])
 216     else
 217       if test "x$shadowpw" = "xyes"; then
 218         AC_MSG_ERROR([shadow support not available])
 219       else
 220         netatalk_cv_use_shadowpw=no
 221       fi
 222     fi
 223 fi
 224
 225 AC_MSG_CHECKING([whether shadow support should be enabled])
 226 if test "x$netatalk_cv_use_shadowpw" = "xyes"; then
 227         AC_MSG_RESULT([yes])
 228 else
 229         AC_MSG_RESULT([no])
 230 fi
 231 ])
 232
 233 dnl Check for optional valid-shell-check support
 234 AC_DEFUN([AC_NETATALK_SHELL_CHECK], [
 235 netatalk_cv_use_shellcheck=yes
 236 AC_MSG_CHECKING([whether checking for a valid shell should be enabled])
 237 AC_ARG_ENABLE(shell-check,
 238         [  --disable-shell-check   disable checking for a valid shell],[
 239         if test "$enableval" = "no"; then
 240                 AC_DEFINE(DISABLE_SHELLCHECK, 1, [Define if shell check should be disabled])
 241                 AC_MSG_RESULT([no])
 242                 netatalk_cv_use_shellcheck=no
 243         else
 244                 AC_MSG_RESULT([yes])
 245         fi
 246         ],[
 247                 AC_MSG_RESULT([yes])
 248         ]
 249 )
 250 ])
 251
 252 dnl Check for optional sysv initscript install
 253 AC_DEFUN([AC_NETATALK_INIT_STYLE], [
 254     AC_ARG_WITH(init-style,
 255                 [  --with-init-style       use OS specific init config [[redhat-sysv|redhat-systemd|suse-sysv|suse-systemd|gentoo|netbsd|debian|solaris|systemd]]],
 256                 init_style="$withval", init_style=none
 257     )
 258     case "$init_style" in
 259     "redhat")
 260             AC_MSG_ERROR([--with-init-style=redhat is obsoleted. Use redhat-sysv or redhat-systemd.])
 261         ;;
 262     "redhat-sysv")
 263             AC_MSG_RESULT([enabling redhat-style sysv initscript support])
 264             ;;
 265     "redhat-systemd")
 266             AC_MSG_RESULT([enabling redhat-style systemd support])
 267             ;;
 268     "suse")
 269             AC_MSG_ERROR([--with-init-style=suse is obsoleted. Use suse-sysv or suse-systemd.])
 270         ;;
 271     "suse-sysv")
 272             AC_MSG_RESULT([enabling suse-style sysv initscript support])
 273             ;;
 274     "suse-systemd")
 275             AC_MSG_RESULT([enabling suse-style systemd support (>=openSUSE12.1)])
 276             ;;
 277     "gentoo")
 278             AC_MSG_RESULT([enabling gentoo-style initscript support])
 279         ;;
 280     "netbsd")
 281             AC_MSG_RESULT([enabling netbsd-style initscript support])
 282         ;;
 283     "debian")
 284             AC_MSG_RESULT([enabling debian-style initscript support])
 285         ;;
 286     "solaris")
 287             AC_MSG_RESULT([enabling solaris-style SMF support])
 288         ;;
 289     "systemd")
 290             AC_MSG_RESULT([enabling general systemd support])
 291         ;;
 292     "none")
 293             AC_MSG_RESULT([disabling init-style support])
 294         ;;
 295     *)
 296             AC_MSG_ERROR([illegal init-style])
 297         ;;
 298     esac
 299     AM_CONDITIONAL(USE_NETBSD, test x$init_style = xnetbsd)
 300     AM_CONDITIONAL(USE_REDHAT_SYSV, test x$init_style = xredhat-sysv)
 301     AM_CONDITIONAL(USE_SUSE_SYSV, test x$init_style = xsuse-sysv)
 302     AM_CONDITIONAL(USE_SOLARIS, test x$init_style = xsolaris)
 303     AM_CONDITIONAL(USE_GENTOO, test x$init_style = xgentoo)
 304     AM_CONDITIONAL(USE_DEBIAN, test x$init_style = xdebian)
 305     AM_CONDITIONAL(USE_SYSTEMD, test x$init_style = xsystemd || test x$init_style = xredhat-systemd || test x$init_style = xsuse-systemd)
 306     AM_CONDITIONAL(USE_UNDEF, test x$init_style = xnone)
 307
 308 ])
 309
 310 dnl OS specific configuration
 311 AC_DEFUN([AC_NETATALK_OS_SPECIFIC], [
 312 case "$host_os" in
 313         *aix*)                          this_os=aix ;;
 314         *freebsd*)                      this_os=freebsd ;;
 315         *hpux11*)                       this_os=hpux11 ;;
 316         *irix*)                         this_os=irix ;;
 317         *linux*)                        this_os=linux ;;
 318         *osx*)                          this_os=macosx ;;
 319         *darwin*)                       this_os=macosx ;;
 320         *netbsd*)                       this_os=netbsd ;;
 321         *openbsd*)                      this_os=openbsd ;;
 322         *osf*)                          this_os=tru64 ;;
 323         *solaris*)                      this_os=solaris ;;
 324 esac
 325
 326 case "$host_cpu" in
 327         i386|i486|i586|i686|k7)         this_cpu=x86 ;;
 328         alpha)                                          this_cpu=alpha ;;
 329         mips)                                           this_cpu=mips ;;
 330         powerpc|ppc)                            this_cpu=ppc ;;
 331 esac
 332
 333 dnl --------------------- GNU source
 334 case "$this_os" in
 335         linux)  AC_DEFINE(_GNU_SOURCE, 1, [Whether to use GNU libc extensions])
 336         ;;
 337      kfreebsd-gnu) AC_DEFINE(_GNU_SOURCE, 1, [Whether to use GNU libc extensions])
 338         ;;
 339 esac
 340
 341 dnl --------------------- operating system specific flags (port from sys/*)
 342
 343 dnl ----- FreeBSD specific -----
 344 if test x"$this_os" = "xfreebsd"; then
 345         AC_MSG_RESULT([ * FreeBSD specific configuration])
 346         AC_DEFINE(BSD4_4, 1, [BSD compatiblity macro])
 347         AC_DEFINE(FREEBSD, 1, [Define if OS is FreeBSD])
 348     AC_DEFINE(OPEN_NOFOLLOW_ERRNO, EMLINK, errno returned by open with O_NOFOLLOW)
 349 fi
 350
 351 dnl ----- GNU/kFreeBSD specific -----
 352 if test x"$this_os" = "xkfreebsd-gnu"; then
 353         AC_MSG_RESULT([ * GNU/kFreeBSD specific configuration])
 354         AC_DEFINE(BSD4_4, 1, [BSD compatiblity macro])
 355         AC_DEFINE(FREEBSD, 1, [Define if OS is FreeBSD])
 356     AC_DEFINE(OPEN_NOFOLLOW_ERRNO, EMLINK, errno returned by open with O_NOFOLLOW)
 357 fi
 358
 359 dnl ----- Linux specific -----
 360 if test x"$this_os" = "xlinux"; then
 361         AC_MSG_RESULT([ * Linux specific configuration])
 362
 363         dnl ----- check if we need the quotactl wrapper
 364     AC_CHECK_HEADERS(linux/dqblk_xfs.h,,
 365                 [AC_CHECK_HEADERS(linux/xqm.h linux/xfs_fs.h)
 366                 AC_CHECK_HEADERS(xfs/libxfs.h xfs/xqm.h xfs/xfs_fs.h)]
 367         )
 368
 369
 370         dnl ----- as far as I can tell, dbtob always does the wrong thing
 371         dnl ----- on every single version of linux I've ever played with.
 372         dnl ----- see etc/afpd/quota.c
 373         AC_DEFINE(HAVE_BROKEN_DBTOB, 1, [Define if dbtob is broken])
 374
 375         need_dash_r=no
 376 fi
 377
 378 dnl ----- NetBSD specific -----
 379 if test x"$this_os" = "xnetbsd"; then
 380         AC_MSG_RESULT([ * NetBSD specific configuration])
 381         AC_DEFINE(BSD4_4, 1, [BSD compatiblity macro])
 382         AC_DEFINE(NETBSD, 1, [Define if OS is NetBSD])
 383     AC_DEFINE(OPEN_NOFOLLOW_ERRNO, EFTYPE, errno returned by open with O_NOFOLLOW)
 384
 385         CFLAGS="-I\$(top_srcdir)/sys/netbsd $CFLAGS"
 386         need_dash_r=yes
 387
 388         dnl ----- NetBSD does not have crypt.h, uses unistd.h -----
 389         AC_DEFINE(UAM_DHX, 1, [Define if the DHX UAM modules should be compiled])
 390 fi
 391
 392 dnl ----- OpenBSD specific -----
 393 if test x"$this_os" = "xopenbsd"; then
 394         AC_MSG_RESULT([ * OpenBSD specific configuration])
 395     AC_DEFINE(BSD4_4, 1, [BSD compatiblity macro])
 396         dnl ----- OpenBSD does not have crypt.h, uses unistd.h -----
 397         AC_DEFINE(UAM_DHX, 1, [Define if the DHX UAM modules should be compiled])
 398 fi
 399
 400 dnl ----- Solaris specific -----
 401 if test x"$this_os" = "xsolaris"; then
 402         AC_MSG_RESULT([ * Solaris specific configuration])
 403         AC_DEFINE(__svr4__, 1, [Solaris compatibility macro])
 404         AC_DEFINE(_ISOC9X_SOURCE, 1, [Compatibility macro])
 405         AC_DEFINE(NO_STRUCT_TM_GMTOFF, 1, [Define if the gmtoff member of struct tm is not available])
 406         AC_DEFINE(SOLARIS, 1, [Solaris compatibility macro])
 407     AC_DEFINE(_XOPEN_SOURCE, 600, [Solaris compilation environment])
 408     AC_DEFINE(__EXTENSIONS__,  1, [Solaris compilation environment])
 409         CFLAGS="-I\$(top_srcdir)/sys/generic $CFLAGS"
 410         need_dash_r=yes
 411         init_style=solaris
 412
 413         solaris_module=no
 414         AC_MSG_CHECKING([if we can build Solaris kernel module])
 415         if test -x /usr/ccs/bin/ld && test x"$netatalk_cv_ddp_enabled" = x"yes" ; then
 416                 solaris_module=yes
 417         fi
 418         AC_MSG_RESULT([$solaris_module])
 419
 420         COMPILE_64BIT_KMODULE=no
 421         KCFLAGS=""
 422         KLDFLAGS=""
 423         COMPILE_KERNEL_GCC=no
 424
 425         if test "$solaris_module" = "yes"; then
 426            dnl Solaris kernel module stuff
 427            AC_MSG_CHECKING([if we have to build a 64bit kernel module])
 428
 429            # check for isainfo, if not found it has to be a 32 bit kernel (<=2.6)
 430            if test -x /usr/bin/isainfo; then
 431                 # check for 64 bit platform
 432                 if isainfo -kv | grep '^64-bit'; then
 433                         COMPILE_64BIT_KMODULE=yes
 434                 fi
 435            fi
 436
 437            AC_MSG_RESULT([$COMPILE_64BIT_KMODULE])
 438
 439            if test "${GCC}" = yes; then
 440                 COMPILE_KERNEL_GCC=yes
 441                 if test "$COMPILE_64BIT_KMODULE" = yes; then
 442
 443                         AC_MSG_CHECKING([if we can build a 64bit kernel module])
 444
 445                         case `$CC --version 2>/dev/null` in
 446                         [[12]].* | 3.0.*)
 447                                 COMPILE_64BIT_KMODULE=no
 448                                 COMPILE_KERNEL_GCC=no
 449                                 solaris_module=no;;
 450                         *)
 451                                 # use for 64 bit
 452                                 KCFLAGS="-m64"
 453                                 #KLDFLAGS="-melf64_sparc"
 454                                 KLDFLAGS="-64";;
 455                         esac
 456
 457                         AC_MSG_RESULT([$COMPILE_64BIT_KMODULE])
 458
 459                 else
 460                         KCFLAGS=""
 461                         KLDFLAGS=""
 462                 fi
 463                 KCFLAGS="$KCFLAGS -D_KERNEL -Wall -Wstrict-prototypes"
 464            else
 465                 if test "$COMPILE_64BIT_KMODULE" = yes; then
 466                 # use Sun CC (for a 64-bit kernel, uncomment " -xarch=v9 -xregs=no%appl ")
 467                         KCFLAGS="-xarch=v9 -xregs=no%appl"
 468                         KLDFLAGS="-64"
 469                 else
 470                         KCFLAGS=""
 471                         KLDFLAGS=""
 472                 fi
 473                 KCFLAGS="-D_KERNEL $KCFLAGS -mno-app-regs -munaligned-doubles -fpcc-struct-return"
 474            fi
 475
 476            AC_CACHE_CHECK([for timeout_id_t],netatalk_cv_HAVE_TIMEOUT_ID_T,[
 477            AC_LINK_IFELSE([AC_LANG_PROGRAM([[\
 478 #include <sys/stream.h>
 479 #include <sys/ddi.h>]], [[\
 480 timeout_id_t dummy;
 481 ]])],[netatalk_cv_HAVE_TIMEOUT_ID_T=yes],[netatalk_cv_HAVE_TIMEOUT_ID_T=no])])
 482
 483            AC_DEFINE(HAVE_TIMEOUT_ID_T, test x"$netatalk_cv_HAVE_TIMEOUT_ID" = x"yes", [define for timeout_id_t])
 484         fi
 485
 486         AC_SUBST(COMPILE_KERNEL_GCC)
 487         AC_SUBST(COMPILE_64BIT_KMODULE)
 488         AC_SUBST(KCFLAGS)
 489         AC_SUBST(KLDFLAGS)
 490 fi
 491
 492 dnl Whether to run ldconfig after installing libraries
 493 AC_PATH_PROG(NETA_LDCONFIG, ldconfig, , [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/bin$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/usr/bin])
 494 echo NETA_LDCONFIG = $NETA_LDCONFIG
 495 AM_CONDITIONAL(RUN_LDCONFIG, test x"$this_os" = x"linux" -a x"$NETA_LDCONFIG" != x"")
 496 ])
 497
 498 dnl Check for building PGP UAM module
 499 AC_DEFUN([AC_NETATALK_PGP_UAM], [
 500 AC_MSG_CHECKING([whether the PGP UAM should be build])
 501 AC_ARG_ENABLE(pgp-uam,
 502         [  --enable-pgp-uam        enable build of PGP UAM module],[
 503         if test "$enableval" = "yes"; then
 504                 if test "x$neta_cv_have_openssl" = "xyes"; then
 505                         AC_DEFINE(UAM_PGP, 1, [Define if the PGP UAM module should be compiled])
 506                         compile_pgp=yes
 507                         AC_MSG_RESULT([yes])
 508                 else
 509                         AC_MSG_RESULT([no])
 510                 fi
 511         fi
 512         ],[
 513                 AC_MSG_RESULT([no])
 514         ]
 515 )
 516 ])
 517
 518 dnl Check for building Kerberos V UAM module
 519 AC_DEFUN([AC_NETATALK_KRB5_UAM], [
 520 netatalk_cv_build_krb5_uam=no
 521 AC_ARG_ENABLE(krbV-uam,
 522         [  --enable-krbV-uam       enable build of Kerberos V UAM module],
 523         [
 524                 if test x"$enableval" = x"yes"; then
 525                         NETATALK_GSSAPI_CHECK([
 526                                 netatalk_cv_build_krb5_uam=yes
 527                         ],[
 528                                 AC_MSG_ERROR([need GSSAPI to build Kerberos V UAM])
 529                         ])
 530                 fi
 531         ]
 532
 533 )
 534
 535 AC_MSG_CHECKING([whether Kerberos V UAM should be build])
 536 if test x"$netatalk_cv_build_krb5_uam" = x"yes"; then
 537         AC_MSG_RESULT([yes])
 538 else
 539         AC_MSG_RESULT([no])
 540 fi
 541 AM_CONDITIONAL(USE_GSSAPI, test x"$netatalk_cv_build_krb5_uam" = x"yes")
 542 ])
 543
 544 dnl Check if we can directly use Kerberos 5 API, used for reading keytabs
 545 dnl and automatically construction DirectoryService names from that, instead
 546 dnl of requiring special configuration in afp.conf
 547 AC_DEFUN([AC_NETATALK_KERBEROS], [
 548 AC_MSG_CHECKING([for Kerberos 5 (necessary for GetSrvrInfo:DirectoryNames support)])
 549 AC_ARG_WITH([kerberos],
 550     [AS_HELP_STRING([--with-kerberos], [Kerberos 5 support (default=auto)])],
 551     [],
 552     [with_kerberos=auto])
 553 AC_MSG_RESULT($with_kerberos)
 554
 555 if test x"$with_kerberos" != x"no"; then
 556    have_krb5_header="no"
 557    AC_CHECK_HEADERS([krb5/krb5.h krb5.h], [have_krb5_header="yes"; break])
 558    if test x"$have_krb5_header" = x"no" && test x"$with_kerberos" != x"auto"; then
 559       AC_MSG_FAILURE([--with-kerberos was given, but no headers found])
 560    fi
 561
 562    AC_PATH_PROG([KRB5_CONFIG], [krb5-config])
 563    AC_MSG_CHECKING([for krb5-config])
 564    if test -x "$KRB5_CONFIG"; then
 565       AC_MSG_RESULT([$KRB5_CONFIG])
 566       KRB5_CFLAGS="`$KRB5_CONFIG --cflags krb5`"
 567       KRB5_LIBS="`$KRB5_CONFIG --libs krb5`"
 568       AC_SUBST(KRB5_CFLAGS)
 569       AC_SUBST(KRB5_LIBS)
 570       with_kerberos="yes"
 571    else
 572       AC_MSG_RESULT([not found])
 573       if test x"$with_kerberos" != x"auto"; then
 574          AC_MSG_FAILURE([--with-kerberos was given, but krb5-config could not be found])
 575       fi
 576    fi
 577 fi
 578
 579 if test x"$with_kerberos" = x"yes"; then
 580    AC_DEFINE([HAVE_KERBEROS], [1], [Define if Kerberos 5 is available])
 581 fi
 582
 583 dnl Check for krb5_free_unparsed_name and krb5_free_error_message
 584 save_CFLAGS="$CFLAGS"
 585 save_LIBS="$LIBS"
 586 CFLAGS="$KRB5_CFLAGS"
 587 LIBS="$KRB5_LIBS"
 588 AC_CHECK_FUNCS([krb5_free_unparsed_name krb5_free_error_message])
 589 CFLAGS="$save_CFLAGS"
 590 LIBS="$save_LIBS"
 591 ])
 592
 593 dnl Check for overwrite the config files or not
 594 AC_DEFUN([AC_NETATALK_OVERWRITE_CONFIG], [
 595 AC_MSG_CHECKING([whether configuration files should be overwritten])
 596 AC_ARG_ENABLE(overwrite,
 597         [  --enable-overwrite      overwrite configuration files during installation],
 598         [OVERWRITE_CONFIG="${enable_overwrite}"],
 599         [OVERWRITE_CONFIG="no"]
 600 )
 601 AC_MSG_RESULT([$OVERWRITE_CONFIG])
 602 AC_SUBST(OVERWRITE_CONFIG)
 603 ])
 604
 605 dnl Check for LDAP support, for client-side ACL visibility
 606 AC_DEFUN([AC_NETATALK_LDAP], [
 607 AC_MSG_CHECKING(for LDAP (necessary for client-side ACL visibility))
 608 AC_ARG_WITH(ldap,
 609     [AS_HELP_STRING([--with-ldap],
 610         [LDAP support (default=auto)])],
 611         netatalk_cv_ldap=$withval,
 612         netatalk_cv_ldap=auto
 613         )
 614 AC_MSG_RESULT($netatalk_cv_ldap)
 615
 616 save_CFLAGS="$CFLAGS"
 617 save_LDFLAGS="$LDFLAGS"
 618 save_LIBS="$LIBS"
 619 CFLAGS=""
 620 LDFLAGS=""
 621 LIBS=""
 622 LDAP_CFLAGS=""
 623 LDAP_LDFLAGS=""
 624 LDAP_LIBS=""
 625
 626 if test x"$netatalk_cv_ldap" != x"no" ; then
 627    if test x"$netatalk_cv_ldap" != x"yes" -a x"$netatalk_cv_ldap" != x"auto"; then
 628        CFLAGS="-I$netatalk_cv_ldap/include"
 629        LDFLAGS="-L$netatalk_cv_ldap/lib"
 630    fi
 631         AC_CHECK_HEADER([ldap.h], netatalk_cv_ldap=yes,
 632         [ if test x"$netatalk_cv_ldap" = x"yes" ; then
 633             AC_MSG_ERROR([Missing LDAP headers])
 634         fi
 635                 netatalk_cv_ldap=no
 636         ])
 637         AC_CHECK_LIB(ldap, ldap_init, netatalk_cv_ldap=yes,
 638         [ if test x"$netatalk_cv_ldap" = x"yes" ; then
 639             AC_MSG_ERROR([Missing LDAP library])
 640         fi
 641                 netatalk_cv_ldap=no
 642         ])
 643 fi
 644
 645 if test x"$netatalk_cv_ldap" = x"yes"; then
 646     LDAP_CFLAGS="$CFLAGS"
 647     LDAP_LDFLAGS="$LDFLAGS"
 648     LDAP_LIBS="-lldap"
 649         AC_DEFINE(HAVE_LDAP,1,[Whether LDAP is available])
 650 fi
 651
 652 AC_SUBST(LDAP_CFLAGS)
 653 AC_SUBST(LDAP_LDFLAGS)
 654 AC_SUBST(LDAP_LIBS)
 655 CFLAGS="$save_CFLAGS"
 656 LDLFLAGS="$save_LDLFLAGS"
 657 LIBS="$save_LIBS"
 658 ])
 659
 660 dnl Check for ACL support
 661 AC_DEFUN([AC_NETATALK_ACL], [
 662 AC_MSG_CHECKING(whether to support ACLs)
 663 AC_ARG_WITH(acls,
 664     [AS_HELP_STRING([--with-acls],
 665         [Include ACL support (default=auto)])],
 666     [ case "$withval" in
 667       yes|no)
 668           with_acl_support="$withval"
 669                   ;;
 670       *)
 671           with_acl_support=auto
 672           ;;
 673       esac ],
 674     [with_acl_support=auto])
 675 AC_MSG_RESULT($with_acl_support)
 676
 677 if test x"$with_acl_support" = x"no"; then
 678         AC_MSG_RESULT(Disabling ACL support)
 679         AC_DEFINE(HAVE_NO_ACLS,1,[Whether no ACLs support should be built in])
 680 else
 681     with_acl_support=yes
 682 fi
 683
 684 if test x"$with_acl_support" = x"yes" ; then
 685         AC_MSG_NOTICE(checking whether ACL support is available:)
 686         case "$host_os" in
 687         *sysv5*)
 688                 AC_MSG_NOTICE(Using UnixWare ACLs)
 689                 AC_DEFINE(HAVE_UNIXWARE_ACLS,1,[Whether UnixWare ACLs are available])
 690                 ;;
 691         *solaris*)
 692                 AC_MSG_NOTICE(Using solaris ACLs)
 693                 AC_DEFINE(HAVE_SOLARIS_ACLS,1,[Whether solaris ACLs are available])
 694                 ACL_LIBS="$ACL_LIBS -lsec"
 695                 ;;
 696         *hpux*)
 697                 AC_MSG_NOTICE(Using HPUX ACLs)
 698                 AC_DEFINE(HAVE_HPUX_ACLS,1,[Whether HPUX ACLs are available])
 699                 ;;
 700         *irix*)
 701                 AC_MSG_NOTICE(Using IRIX ACLs)
 702                 AC_DEFINE(HAVE_IRIX_ACLS,1,[Whether IRIX ACLs are available])
 703                 ;;
 704         *aix*)
 705                 AC_MSG_NOTICE(Using AIX ACLs)
 706                 AC_DEFINE(HAVE_AIX_ACLS,1,[Whether AIX ACLs are available])
 707                 ;;
 708         *osf*)
 709                 AC_MSG_NOTICE(Using Tru64 ACLs)
 710                 AC_DEFINE(HAVE_TRU64_ACLS,1,[Whether Tru64 ACLs are available])
 711                 ACL_LIBS="$ACL_LIBS -lpacl"
 712                 ;;
 713         *darwin*)
 714                 AC_MSG_NOTICE(ACLs on Darwin currently not supported)
 715                 AC_DEFINE(HAVE_NO_ACLS,1,[Whether no ACLs support is available])
 716                 ;;
 717         *)
 718                 AC_CHECK_LIB(acl,acl_get_file,[ACL_LIBS="$ACL_LIBS -lacl"])
 719                 case "$host_os" in
 720                 *linux*)
 721                         AC_CHECK_LIB(attr,getxattr,[ACL_LIBS="$ACL_LIBS -lattr"])
 722                         ;;
 723                 esac
 724                 AC_CACHE_CHECK([for POSIX ACL support],netatalk_cv_HAVE_POSIX_ACLS,[
 725                         acl_LIBS=$LIBS
 726                         LIBS="$LIBS $ACL_LIBS"
 727                         AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 728                                 #include <sys/types.h>
 729                                 #include <sys/acl.h>
 730                         ]], [[
 731                                 acl_t acl;
 732                                 int entry_id;
 733                                 acl_entry_t *entry_p;
 734                                 return acl_get_entry(acl, entry_id, entry_p);
 735                         ]])],[netatalk_cv_HAVE_POSIX_ACLS=yes],[netatalk_cv_HAVE_POSIX_ACLS=no
 736                 with_acl_support=no])
 737                         LIBS=$acl_LIBS
 738                 ])
 739                 if test x"$netatalk_cv_HAVE_POSIX_ACLS" = x"yes"; then
 740                         AC_MSG_NOTICE(Using POSIX ACLs)
 741                         AC_DEFINE(HAVE_POSIX_ACLS,1,[Whether POSIX ACLs are available])
 742                         AC_CACHE_CHECK([for acl_get_perm_np],netatalk_cv_HAVE_ACL_GET_PERM_NP,[
 743                                 acl_LIBS=$LIBS
 744                                 LIBS="$LIBS $ACL_LIBS"
 745                                 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 746                                         #include <sys/types.h>
 747                                         #include <sys/acl.h>
 748                                 ]], [[
 749                                         acl_permset_t permset_d;
 750                                         acl_perm_t perm;
 751                                         return acl_get_perm_np(permset_d, perm);
 752                                 ]])],[netatalk_cv_HAVE_ACL_GET_PERM_NP=yes],[netatalk_cv_HAVE_ACL_GET_PERM_NP=no])
 753                                 LIBS=$acl_LIBS
 754                         ])
 755                         if test x"$netatalk_cv_HAVE_ACL_GET_PERM_NP" = x"yes"; then
 756                                 AC_DEFINE(HAVE_ACL_GET_PERM_NP,1,[Whether acl_get_perm_np() is available])
 757                         fi
 758
 759
 760                        AC_CACHE_CHECK([for acl_from_mode], netatalk_cv_HAVE_ACL_FROM_MODE,[
 761                                acl_LIBS=$LIBS
 762                                LIBS="$LIBS $ACL_LIBS"
 763                 AC_CHECK_FUNCS(acl_from_mode,
 764                                [netatalk_cv_HAVE_ACL_FROM_MODE=yes],
 765                                [netatalk_cv_HAVE_ACL_FROM_MODE=no])
 766                                LIBS=$acl_LIBS
 767                        ])
 768                        if test x"netatalk_cv_HAVE_ACL_FROM_MODE" = x"yes"; then
 769                                AC_DEFINE(HAVE_ACL_FROM_MODE,1,[Whether acl_from_mode() is available])
 770                        fi
 771
 772                 else
 773                         AC_MSG_NOTICE(ACL support is not avaliable)
 774                         AC_DEFINE(HAVE_NO_ACLS,1,[Whether no ACLs support is available])
 775                 fi
 776                 ;;
 777     esac
 778 fi
 779
 780 if test x"$with_acl_support" = x"yes" ; then
 781    AC_CHECK_HEADERS([acl/libacl.h])
 782     AC_DEFINE(HAVE_ACLS,1,[Whether ACLs support is available])
 783     AC_SUBST(ACL_LIBS)
 784 fi
 785 ])
 786
 787 dnl Check for Extended Attributes support
 788 AC_DEFUN([AC_NETATALK_EXTENDED_ATTRIBUTES], [
 789 neta_cv_eas="ad"
 790 neta_cv_eas_sys_found=no
 791 neta_cv_eas_sys_not_found=no
 792
 793 AC_CHECK_HEADERS(sys/attributes.h attr/xattr.h sys/xattr.h sys/extattr.h sys/uio.h sys/ea.h)
 794
 795 case "$this_os" in
 796
 797   *osf*)
 798         AC_SEARCH_LIBS(getproplist, [proplist])
 799         AC_CHECK_FUNCS([getproplist fgetproplist setproplist fsetproplist],
 800                    [neta_cv_eas_sys_found=yes],
 801                    [neta_cv_eas_sys_not_found=yes])
 802         AC_CHECK_FUNCS([delproplist fdelproplist add_proplist_entry get_proplist_entry],,
 803                    [neta_cv_eas_sys_not_found=yes])
 804         AC_CHECK_FUNCS([sizeof_proplist_entry],,
 805                    [neta_cv_eas_sys_not_found=yes])
 806   ;;
 807
 808   *solaris*)
 809         AC_CHECK_FUNCS([attropen],
 810                    [neta_cv_eas_sys_found=yes; AC_DEFINE(HAVE_EAFD, 1, [extattr API has full fledged fds for EAs])],
 811                    [neta_cv_eas_sys_not_found=yes])
 812   ;;
 813
 814   'freebsd')
 815     AC_CHECK_FUNCS([extattr_delete_fd extattr_delete_file extattr_delete_link],
 816                    [neta_cv_eas_sys_found=yes],
 817                    [neta_cv_eas_sys_not_found=yes])
 818     AC_CHECK_FUNCS([extattr_get_fd extattr_get_file extattr_get_link],,
 819                    [neta_cv_eas_sys_not_found=yes])
 820     AC_CHECK_FUNCS([extattr_list_fd extattr_list_file extattr_list_link],,
 821                    [neta_cv_eas_sys_not_found=yes])
 822     AC_CHECK_FUNCS([extattr_set_fd extattr_set_file extattr_set_link],,
 823                    [neta_cv_eas_sys_not_found=yes])
 824   ;;
 825
 826   *freebsd4* | *dragonfly* )
 827     AC_DEFINE(BROKEN_EXTATTR, 1, [Does extattr API work])
 828   ;;
 829
 830   *)
 831         AC_SEARCH_LIBS(getxattr, [attr])
 832
 833     if test "x$neta_cv_eas_sys_found" != "xyes" ; then
 834        AC_CHECK_FUNCS([getxattr lgetxattr fgetxattr listxattr llistxattr],
 835                       [neta_cv_eas_sys_found=yes],
 836                       [neta_cv_eas_sys_not_found=yes])
 837            AC_CHECK_FUNCS([flistxattr removexattr lremovexattr fremovexattr],,
 838                       [neta_cv_eas_sys_not_found=yes])
 839            AC_CHECK_FUNCS([setxattr lsetxattr fsetxattr],,
 840                       [neta_cv_eas_sys_not_found=yes])
 841     fi
 842
 843     if test "x$neta_cv_eas_sys_found" != "xyes" ; then
 844            AC_CHECK_FUNCS([getea fgetea lgetea listea flistea llistea],
 845                       [neta_cv_eas_sys_found=yes],
 846                       [neta_cv_eas_sys_not_found=yes])
 847            AC_CHECK_FUNCS([removeea fremoveea lremoveea setea fsetea lsetea],,
 848                       [neta_cv_eas_sys_not_found=yes])
 849     fi
 850
 851     if test "x$neta_cv_eas_sys_found" != "xyes" ; then
 852            AC_CHECK_FUNCS([attr_get attr_list attr_set attr_remove],,
 853                       [neta_cv_eas_sys_not_found=yes])
 854        AC_CHECK_FUNCS([attr_getf attr_listf attr_setf attr_removef],,
 855                       [neta_cv_eas_sys_not_found=yes])
 856     fi
 857   ;;
 858 esac
 859
 860 # Do xattr functions take additional options like on Darwin?
 861 if test x"$ac_cv_func_getxattr" = x"yes" ; then
 862         AC_CACHE_CHECK([whether xattr interface takes additional options], smb_attr_cv_xattr_add_opt, [
 863                 old_LIBS=$LIBS
 864                 LIBS="$LIBS $ACL_LIBS"
 865                 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 866                         #include <sys/types.h>
 867                         #if HAVE_ATTR_XATTR_H
 868                         #include <attr/xattr.h>
 869                         #elif HAVE_SYS_XATTR_H
 870                         #include <sys/xattr.h>
 871                         #endif
 872                 ]], [[
 873                         getxattr(0, 0, 0, 0, 0, 0);
 874                 ]])],[smb_attr_cv_xattr_add_opt=yes],[smb_attr_cv_xattr_add_opt=no;LIBS=$old_LIBS])
 875         ])
 876         if test x"$smb_attr_cv_xattr_add_opt" = x"yes"; then
 877                 AC_DEFINE(XATTR_ADD_OPT, 1, [xattr functions have additional options])
 878         fi
 879 fi
 880
 881 if test "x$neta_cv_eas_sys_found" = "xyes" ; then
 882    if test "x$neta_cv_eas_sys_not_found" != "xyes" ; then
 883       neta_cv_eas="$neta_cv_eas | sys"
 884    fi
 885 fi
 886 AC_DEFINE_UNQUOTED(EA_MODULES,["$neta_cv_eas"],[Available Extended Attributes modules])
 887 ])
 888
 889 dnl Check for libsmbsharemodes from Samba for Samba/Netatalk access/deny/share modes interop
 890 dnl Defines "neta_cv_have_smbshmd" to "yes" or "no"
 891 dnl AC_SUBST's "SMB_SHAREMODES_CFLAGS" and "SMB_SHAREMODES_LDFLAGS"
 892 dnl AM_CONDITIONAL's "USE_SMB_SHAREMODES"
 893 AC_DEFUN([AC_NETATALK_SMB_SHAREMODES], [
 894     neta_cv_have_smbshmd=no
 895     AC_ARG_WITH(smbsharemodes-lib,
 896                 [  --with-smbsharemodes-lib=PATH        PATH to libsmbsharemodes lib from Samba],
 897                 [SMB_SHAREMODES_LDFLAGS="-L$withval -lsmbsharemodes"]
 898     )
 899     AC_ARG_WITH(smbsharemodes-include,
 900                 [  --with-smbsharemodes-include=PATH    PATH to libsmbsharemodes header from Samba],
 901                 [SMB_SHAREMODES_CFLAGS="-I$withval"]
 902     )
 903     AC_ARG_WITH(smbsharemodes,
 904                 [AS_HELP_STRING([--with-smbsharemodes],[Samba interop (default is yes)])],
 905                 [use_smbsharemodes=$withval],
 906                 [use_smbsharemodes=yes]
 907     )
 908
 909     if test x"$use_smbsharemodes" = x"yes" ; then
 910         AC_MSG_CHECKING([whether to enable Samba/Netatalk access/deny/share-modes interop])
 911
 912         saved_CFLAGS="$CFLAGS"
 913         saved_LDFLAGS="$LDFLAGS"
 914         CFLAGS="$SMB_SHAREMODES_CFLAGS $CFLAGS"
 915         LDFLAGS="$SMB_SHAREMODES_LDFLAGS $LDFLAGS"
 916
 917         AC_LINK_IFELSE(
 918             [#include <unistd.h>
 919              #include <stdio.h>
 920              #include <sys/time.h>
 921              #include <time.h>
 922              #include <stdint.h>
 923              /* From messages.h */
 924              struct server_id {
 925                  pid_t pid;
 926              };
 927              #include "smb_share_modes.h"
 928              int main(void) { (void)smb_share_mode_db_open(""); return 0;}],
 929             [neta_cv_have_smbshmd=yes]
 930         )
 931
 932         AC_MSG_RESULT($neta_cv_have_smbshmd)
 933         AC_SUBST(SMB_SHAREMODES_CFLAGS, [$SMB_SHAREMODES_CFLAGS])
 934         AC_SUBST(SMB_SHAREMODES_LDFLAGS, [$SMB_SHAREMODES_LDFLAGS])
 935         CFLAGS="$saved_CFLAGS"
 936         LDFLAGS="$saved_LDFLAGS"
 937     fi
 938
 939     AM_CONDITIONAL(USE_SMB_SHAREMODES, test x"$neta_cv_have_smbshmd" = x"yes")
 940 ])
 941
 942 dnl ------ Check for sendfile() --------
 943 AC_DEFUN([AC_NETATALK_SENDFILE], [
 944 netatalk_cv_search_sendfile=yes
 945 AC_ARG_ENABLE(sendfile,
 946     [  --disable-sendfile       disable sendfile syscall],
 947     [if test x"$enableval" = x"no"; then
 948             netatalk_cv_search_sendfile=no
 949         fi]
 950 )
 951
 952 if test x"$netatalk_cv_search_sendfile" = x"yes"; then
 953    case "$host_os" in
 954    *linux*)
 955         AC_DEFINE(SENDFILE_FLAVOR_LINUX,1,[Whether linux sendfile() API is available])
 956         AC_CHECK_FUNC([sendfile], [netatalk_cv_HAVE_SENDFILE=yes])
 957         ;;
 958
 959     *solaris*)
 960         AC_DEFINE(SENDFILE_FLAVOR_SOLARIS, 1, [Solaris sendfile()])
 961         AC_SEARCH_LIBS(sendfile, sendfile)
 962         AC_CHECK_FUNC([sendfile], [netatalk_cv_HAVE_SENDFILE=yes])
 963         AC_CHECK_FUNCS([sendfilev])
 964         ;;
 965
 966     *freebsd*)
 967         AC_DEFINE(SENDFILE_FLAVOR_BSD, 1, [Define if the sendfile() function uses BSD semantics])
 968         AC_CHECK_FUNC([sendfile], [netatalk_cv_HAVE_SENDFILE=yes])
 969         ;;
 970
 971     *)
 972         ;;
 973
 974     esac
 975
 976     if test x"$netatalk_cv_HAVE_SENDFILE" = x"yes"; then
 977         AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() should be used])
 978     fi
 979 fi
 980 ])
 981
 982 dnl --------------------- Check if realpath() takes NULL
 983 AC_DEFUN([AC_NETATALK_REALPATH], [
 984 AC_CACHE_CHECK([if the realpath function allows a NULL argument],
 985     neta_cv_REALPATH_TAKES_NULL, [
 986         AC_RUN_IFELSE([AC_LANG_SOURCE([[
 987             #include <stdio.h>
 988             #include <limits.h>
 989             #include <signal.h>
 990
 991             void exit_on_core(int ignored) {
 992                  exit(1);
 993             }
 994
 995             main() {
 996                 char *newpath;
 997                 signal(SIGSEGV, exit_on_core);
 998                 newpath = realpath("/tmp", NULL);
 999                 exit((newpath != NULL) ? 0 : 1);
1000             }]])],[neta_cv_REALPATH_TAKES_NULL=yes],[neta_cv_REALPATH_TAKES_NULL=no],[neta_cv_REALPATH_TAKES_NULL=cross
1001         ])
1002     ]
1003 )
1004
1005 if test x"$neta_cv_REALPATH_TAKES_NULL" = x"yes"; then
1006     AC_DEFINE(REALPATH_TAKES_NULL,1,[Whether the realpath function allows NULL])
1007 fi
1008 ])