acinclude.m4

   1 # AST_GCC_ATTRIBUTE([attribute name])
   2
   3 AC_DEFUN([AST_GCC_ATTRIBUTE],
   4 [
   5 AC_MSG_CHECKING(for compiler 'attribute $1' support)
   6 AC_COMPILE_IFELSE(
   7         AC_LANG_PROGRAM([static int __attribute__(($1)) test(void) {}],
   8                         []),
   9         AC_MSG_RESULT(yes)
  10         AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
  11         AC_MSG_RESULT(no))
  12 ])
  13
  14 # AST_EXT_LIB_SETUP([package symbol name], [package friendly name], [package option name], [additional help text])
  15
  16 AC_DEFUN([AST_EXT_LIB_SETUP],
  17 [
  18 $1_DESCRIP="$2"
  19 $1_OPTION="$3"
  20 AC_ARG_WITH([$3], AC_HELP_STRING([--with-$3=PATH],[use $2 files in PATH $4]),[
  21 case ${withval} in
  22      n|no)
  23      USE_$1=no
  24      ;;
  25      y|ye|yes)
  26      $1_MANDATORY="yes"
  27      ;;
  28      *)
  29      $1_DIR="${withval}"
  30      $1_MANDATORY="yes"
  31      ;;
  32 esac
  33 ])
  34 PBX_$1=0
  35 AC_SUBST([$1_LIB])
  36 AC_SUBST([$1_INCLUDE])
  37 AC_SUBST([PBX_$1])
  38 ])
  39
  40 # Check for existence of a given package ($1), looking up a function
  41 # in a library, or, if no function is supplied, only check for the
  42 # existence of the header files.
  43 # Only check if PBX_$1 != 1, and set PBX_$1=1 and HAVE_$1 if found.
  44 # Should be called after AST_EXT_LIB_SETUP($1, ...)
  45
  46 # AST_EXT_LIB_CHECK([package symbol name], [package library name], [function to check], [package header], [additional LIB data])
  47
  48 AC_DEFUN([AST_EXT_LIB_CHECK],
  49 [
  50 if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
  51    pbxlibdir=""
  52    if test "x${$1_DIR}" != "x"; then
  53       if test -d ${$1_DIR}/lib; then
  54          pbxlibdir="-L${$1_DIR}/lib"
  55       else
  56          pbxlibdir="-L${$1_DIR}"
  57       fi
  58    fi
  59    pbxfuncname="$3"
  60    if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
  61       AST_$1_FOUND=yes
  62    else
  63       AC_CHECK_LIB([$2], [${pbxfuncname}], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], ${pbxlibdir} $5)
  64    fi
  65
  66    if test "${AST_$1_FOUND}" = "yes"; then
  67       $1_LIB="-l$2 $5"
  68       $1_HEADER_FOUND="1"
  69       if test "x${$1_DIR}" != "x"; then
  70          $1_LIB="${pbxlibdir} ${$1_LIB}"
  71          $1_INCLUDE="-I${$1_DIR}/include"
  72          if test "x$4" != "x" ; then
  73             AC_CHECK_HEADER([${$1_DIR}/include/$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0] )
  74          fi
  75       else
  76          if test "x$4" != "x" ; then
  77             AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0] )
  78          fi
  79       fi
  80       if test "x${$1_HEADER_FOUND}" = "x0" ; then
  81          if test ! -z "${$1_MANDATORY}" ;
  82          then
  83             AC_MSG_NOTICE( ***)
  84             AC_MSG_NOTICE( *** It appears that you do not have the $2 development package installed.)
  85             AC_MSG_NOTICE( *** Please install it to include ${$1_DESCRIP} support, or re-run configure)
  86             AC_MSG_NOTICE( *** without explicitly specifying --with-${$1_OPTION})
  87             exit 1
  88          fi
  89          $1_LIB=""
  90          $1_INCLUDE=""
  91       else
  92          if test "x${pbxfuncname}" = "x" ; then         # only checking headers -> no library
  93             $1_LIB=""
  94          fi
  95          PBX_$1=1
  96          AC_DEFINE_UNQUOTED([HAVE_$1], 1, [Define to indicate the ${$1_DESCRIP} library])
  97       fi
  98    elif test ! -z "${$1_MANDATORY}";
  99    then
 100       AC_MSG_NOTICE(***)
 101       AC_MSG_NOTICE(*** The ${$1_DESCRIP} installation on this system appears to be broken.)
 102       AC_MSG_NOTICE(*** Either correct the installation, or run configure)
 103       AC_MSG_NOTICE(*** without explicitly specifying --with-${$1_OPTION})
 104       exit 1
 105    fi
 106 fi
 107 ])
 108
 109
 110 AC_DEFUN(
 111 [AST_CHECK_GNU_MAKE], [AC_CACHE_CHECK(for GNU make, GNU_MAKE,
 112    GNU_MAKE='Not Found' ;
 113    GNU_MAKE_VERSION_MAJOR=0 ;
 114    GNU_MAKE_VERSION_MINOR=0 ;
 115    for a in make gmake gnumake ; do
 116       if test -z "$a" ; then continue ; fi ;
 117       if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
 118          GNU_MAKE=$a ;
 119          GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
 120          GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
 121          break;
 122       fi
 123    done ;
 124 ) ;
 125 if test  "x$GNU_MAKE" = "xNot Found"  ; then
 126    AC_MSG_ERROR( *** Please install GNU make.  It is required to build Asterisk!)
 127    exit 1
 128 fi
 129 AC_SUBST([GNU_MAKE])
 130 ])
 131
 132
 133 AC_DEFUN(
 134 [AST_CHECK_PWLIB], [
 135 PWLIB_INCDIR=
 136 PWLIB_LIBDIR=
 137 if test "${PWLIBDIR:-unset}" != "unset" ; then
 138   AC_CHECK_FILE(${PWLIBDIR}/version.h, HAS_PWLIB=1, )
 139 fi
 140 if test "${HAS_PWLIB:-unset}" = "unset" ; then
 141   if test "${OPENH323DIR:-unset}" != "unset"; then
 142     AC_CHECK_FILE(${OPENH323DIR}/../pwlib/version.h, HAS_PWLIB=1, )
 143   fi
 144   if test "${HAS_PWLIB:-unset}" != "unset" ; then
 145     PWLIBDIR="${OPENH323DIR}/../pwlib"
 146   else
 147     AC_CHECK_FILE(${HOME}/pwlib/include/ptlib.h, HAS_PWLIB=1, )
 148     if test "${HAS_PWLIB:-unset}" != "unset" ; then
 149       PWLIBDIR="${HOME}/pwlib"
 150     else
 151       AC_CHECK_FILE(/usr/local/include/ptlib.h, HAS_PWLIB=1, )
 152       if test "${HAS_PWLIB:-unset}" != "unset" ; then
 153         AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/bin)
 154         if test "${PTLIB_CONFIG:-unset}" = "unset" ; then
 155           AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/share/pwlib/make)
 156         fi
 157         PWLIB_INCDIR="/usr/local/include"
 158         if test "x$LIB64" != "x"; then
 159           PWLIB_LIBDIR="/usr/local/lib64"
 160         else
 161           PWLIB_LIBDIR="/usr/local/lib"
 162         fi
 163       else
 164         AC_CHECK_FILE(/usr/include/ptlib.h, HAS_PWLIB=1, )
 165         if test "${HAS_PWLIB:-unset}" != "unset" ; then
 166           AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/share/pwlib/make)
 167           PWLIB_INCDIR="/usr/include"
 168           if test "x$LIB64" != "x"; then
 169                 PWLIB_LIBDIR="/usr/lib64"
 170           else
 171                 PWLIB_LIBDIR="/usr/lib"
 172               fi
 173         fi
 174       fi
 175     fi
 176   fi
 177 fi
 178
 179 #if test "${HAS_PWLIB:-unset}" = "unset" ; then
 180 #  echo "Cannot find pwlib - please install or set PWLIBDIR and try again"
 181 #  exit
 182 #fi
 183
 184 if test "${HAS_PWLIB:-unset}" != "unset" ; then
 185   if test "${PWLIBDIR:-unset}" = "unset" ; then
 186     if test "${PTLIB_CONFIG:-unset}" != "unset" ; then
 187       PWLIBDIR=`$PTLIB_CONFIG --prefix`
 188     else
 189       echo "Cannot find ptlib-config - please install and try again"
 190       exit
 191     fi
 192   fi
 193
 194   if test "x$PWLIBDIR" = "x/usr" -o "x$PWLIBDIR" = "x/usr/"; then
 195     PWLIBDIR="/usr/share/pwlib"
 196     PWLIB_INCDIR="/usr/include"
 197     if test "x$LIB64" != "x"; then
 198       PWLIB_LIBDIR="/usr/lib64"
 199     else
 200       PWLIB_LIBDIR="/usr/lib"
 201     fi
 202   fi
 203   if test "x$PWLIBDIR" = "x/usr/local" -o "x$PWLIBDIR" = "x/usr/"; then
 204     PWLIBDIR="/usr/local/share/pwlib"
 205     PWLIB_INCDIR="/usr/local/include"
 206     if test "x$LIB64" != "x"; then
 207       PWLIB_LIBDIR="/usr/local/lib64"
 208     else
 209       PWLIB_LIBDIR="/usr/local/lib"
 210     fi
 211   fi
 212
 213   if test "${PWLIB_INCDIR:-unset}" = "unset"; then
 214     PWLIB_INCDIR="${PWLIBDIR}/include"
 215   fi
 216   if test "${PWLIB_LIBDIR:-unset}" = "unset"; then
 217     PWLIB_LIBDIR="${PWLIBDIR}/lib"
 218   fi
 219
 220   AC_SUBST([PWLIBDIR])
 221   AC_SUBST([PWLIB_INCDIR])
 222   AC_SUBST([PWLIB_LIBDIR])
 223 fi
 224 ])
 225
 226
 227 AC_DEFUN(
 228 [AST_CHECK_OPENH323_PLATFORM], [
 229 PWLIB_OSTYPE=
 230 case "$host_os" in
 231   linux*)          PWLIB_OSTYPE=linux ;
 232                 ;;
 233   freebsd* )       PWLIB_OSTYPE=FreeBSD ;
 234                 ;;
 235   openbsd* )       PWLIB_OSTYPE=OpenBSD ;
 236                                    ENDLDLIBS="-lossaudio" ;
 237                 ;;
 238   netbsd* )        PWLIB_OSTYPE=NetBSD ;
 239                                    ENDLDLIBS="-lossaudio" ;
 240                 ;;
 241   solaris* | sunos* ) PWLIB_OSTYPE=solaris ;
 242                 ;;
 243   darwin* )            PWLIB_OSTYPE=Darwin ;
 244                 ;;
 245   beos*)           PWLIB_OSTYPE=beos ;
 246                    STDCCFLAGS="$STDCCFLAGS -D__BEOS__"
 247                 ;;
 248   cygwin*)         PWLIB_OSTYPE=cygwin ;
 249                 ;;
 250   mingw*)              PWLIB_OSTYPE=mingw ;
 251                            STDCCFLAGS="$STDCCFLAGS -mms-bitfields" ;
 252                            ENDLDLIBS="-lwinmm -lwsock32 -lsnmpapi -lmpr -lcomdlg32 -lgdi32 -lavicap32" ;
 253                 ;;
 254   * )                  PWLIB_OSTYPE="$host_os" ;
 255                            AC_MSG_WARN("OS $PWLIB_OSTYPE not recognized - proceed with caution!") ;
 256                 ;;
 257 esac
 258
 259 PWLIB_MACHTYPE=
 260 case "$host_cpu" in
 261    x86 | i686 | i586 | i486 | i386 ) PWLIB_MACHTYPE=x86
 262                    ;;
 263
 264    x86_64)         PWLIB_MACHTYPE=x86_64 ;
 265                    P_64BIT=1 ;
 266                    LIB64=1 ;
 267                    ;;
 268
 269    alpha | alphaev56 | alphaev6 | alphaev67 | alphaev7) PWLIB_MACHTYPE=alpha ;
 270                    P_64BIT=1 ;
 271                    ;;
 272
 273    sparc )         PWLIB_MACHTYPE=sparc ;
 274                    ;;
 275
 276    powerpc )       PWLIB_MACHTYPE=ppc ;
 277                    ;;
 278
 279    ppc )           PWLIB_MACHTYPE=ppc ;
 280                    ;;
 281
 282    powerpc64 )     PWLIB_MACHTYPE=ppc64 ;
 283                    P_64BIT=1 ;
 284                    LIB64=1 ;
 285                    ;;
 286
 287    ppc64 )         PWLIB_MACHTYPE=ppc64 ;
 288                    P_64BIT=1 ;
 289                    LIB64=1 ;
 290                    ;;
 291
 292    ia64)           PWLIB_MACHTYPE=ia64 ;
 293                    P_64BIT=1 ;
 294                    ;;
 295
 296    s390x)          PWLIB_MACHTYPE=s390x ;
 297                    P_64BIT=1 ;
 298                    LIB64=1 ;
 299                    ;;
 300
 301    s390)           PWLIB_MACHTYPE=s390 ;
 302                    ;;
 303
 304    * )             PWLIB_MACHTYPE="$host_cpu";
 305                    AC_MSG_WARN("CPU $PWLIB_MACHTYPE not recognized - proceed with caution!") ;;
 306 esac
 307
 308 PWLIB_PLATFORM="${PWLIB_OSTYPE}_${PWLIB_MACHTYPE}"
 309
 310 AC_SUBST([PWLIB_PLATFORM])
 311 ])
 312
 313
 314 AC_DEFUN(
 315 [AST_CHECK_OPENH323], [
 316 OPENH323_INCDIR=
 317 OPENH323_LIBDIR=
 318 if test "${OPENH323DIR:-unset}" != "unset" ; then
 319   AC_CHECK_FILE(${OPENH323DIR}/version.h, HAS_OPENH323=1, )
 320 fi
 321 if test "${HAS_OPENH323:-unset}" = "unset" ; then
 322   AC_CHECK_FILE(${PWLIBDIR}/../openh323/version.h, OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1, )
 323   if test "${HAS_OPENH323:-unset}" != "unset" ; then
 324     OPENH323DIR="${PWLIBDIR}/../openh323"
 325     AC_CHECK_FILE(${OPENH323DIR}/include/h323.h, , OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}")
 326   else
 327     AC_CHECK_FILE(${HOME}/openh323/include/h323.h, HAS_OPENH323=1, )
 328     if test "${HAS_OPENH323:-unset}" != "unset" ; then
 329       OPENH323DIR="${HOME}/openh323"
 330     else
 331       AC_CHECK_FILE(/usr/local/include/openh323/h323.h, HAS_OPENH323=1, )
 332       if test "${HAS_OPENH323:-unset}" != "unset" ; then
 333         OPENH323DIR="/usr/local/share/openh323"
 334         OPENH323_INCDIR="/usr/local/include/openh323"
 335         if test "x$LIB64" != "x"; then
 336           OPENH323_LIBDIR="/usr/local/lib64"
 337         else
 338           OPENH323_LIBDIR="/usr/local/lib"
 339         fi
 340       else
 341         AC_CHECK_FILE(/usr/include/openh323/h323.h, HAS_OPENH323=1, )
 342         if test "${HAS_OPENH323:-unset}" != "unset" ; then
 343           OPENH323DIR="/usr/share/openh323"
 344           OPENH323_INCDIR="/usr/include/openh323"
 345           if test "x$LIB64" != "x"; then
 346             OPENH323_LIBDIR="/usr/lib64"
 347           else
 348             OPENH323_LIBDIR="/usr/lib"
 349           fi
 350         fi
 351       fi
 352     fi
 353   fi
 354 fi
 355
 356 if test "${HAS_OPENH323:-unset}" != "unset" ; then
 357   if test "${OPENH323_INCDIR:-unset}" = "unset"; then
 358     OPENH323_INCDIR="${OPENH323DIR}/include"
 359   fi
 360   if test "${OPENH323_LIBDIR:-unset}" = "unset"; then
 361     OPENH323_LIBDIR="${OPENH323DIR}/lib"
 362   fi
 363
 364   AC_SUBST([OPENH323DIR])
 365   AC_SUBST([OPENH323_INCDIR])
 366   AC_SUBST([OPENH323_LIBDIR])
 367 fi
 368 ])
 369
 370
 371 AC_DEFUN(
 372 [AST_CHECK_PWLIB_VERSION], [
 373         if test "${HAS_$2:-unset}" != "unset"; then
 374                 $2_VERSION=`grep "$2_VERSION" ${$2_INCDIR}/$3 | cut -f2 -d ' ' | sed -e 's/"//g'`
 375                 $2_MAJOR_VERSION=`echo ${$2_VERSION} | cut -f1 -d.`
 376                 $2_MINOR_VERSION=`echo ${$2_VERSION} | cut -f2 -d.`
 377                 $2_BUILD_NUMBER=`echo ${$2_VERSION} | cut -f3 -d.`
 378                 let $2_VER=${$2_MAJOR_VERSION}*10000+${$2_MINOR_VERSION}*100+${$2_BUILD_NUMBER}
 379                 let $2_REQ=$4*10000+$5*100+$6
 380
 381                 AC_MSG_CHECKING(if $1 version ${$2_VERSION} is compatible with chan_h323)
 382                 if test ${$2_VER} -lt ${$2_REQ}; then
 383                         AC_MSG_RESULT(no)
 384                         unset HAS_$2
 385                 else
 386                         AC_MSG_RESULT(yes)
 387                 fi
 388         fi
 389 ])
 390
 391
 392 AC_DEFUN(
 393 [AST_CHECK_PWLIB_BUILD], [
 394         if test "${HAS_$2:-unset}" != "unset"; then
 395            AC_MSG_CHECKING($1 installation validity)
 396
 397            saved_cppflags="${CPPFLAGS}"
 398            saved_libs="${LIBS}"
 399            LIBS="${LIBS} -L${$2_LIBDIR} -l${PLATFORM_$2} $7"
 400            CPPFLAGS="${CPPFLAGS} -I${$2_INCDIR} $6"
 401
 402            AC_LANG_PUSH([C++])
 403
 404            AC_LINK_IFELSE(
 405                 [AC_LANG_PROGRAM([$4],[$5])],
 406                 [       AC_MSG_RESULT(yes)
 407                         ac_cv_lib_$2="yes"
 408                 ],
 409                 [       AC_MSG_RESULT(no)
 410                         ac_cv_lib_$2="no"
 411                 ]
 412                 )
 413
 414            AC_LANG_POP([C++])
 415
 416            LIBS="${saved_libs}"
 417            CPPFLAGS="${saved_cppflags}"
 418
 419            if test "${ac_cv_lib_$2}" = "yes"; then
 420               if test "${$2_LIBDIR}" != "" -a "${$2_LIBDIR}" != "/usr/lib"; then
 421                  $2_LIB="-L${$2_LIBDIR} -l${PLATFORM_$2}"
 422               else
 423                  $2_LIB="-l${PLATFORM_$2}"
 424               fi
 425               if test "${$2_INCDIR}" != "" -a "${$2_INCDIR}" != "/usr/include"; then
 426                  $2_INCLUDE="-I${$2_INCDIR}"
 427               fi
 428                   PBX_$2=1
 429                   AC_DEFINE([HAVE_$2], 1, [$3])
 430            fi
 431         fi
 432 ])
 433
 434 AC_DEFUN(
 435 [AST_CHECK_OPENH323_BUILD], [
 436         if test "${HAS_OPENH323:-unset}" != "unset"; then
 437                 AC_MSG_CHECKING(OpenH323 build option)
 438                 OPENH323_SUFFIX=
 439                 files=`ls -l ${OPENH323_LIBDIR}/libh323_${PWLIB_PLATFORM}_*.so*`
 440                 libfile=
 441                 if test -n "$files"; then
 442                         for f in $files; do
 443                                 if test -f $f -a ! -L $f; then
 444                                         libfile=`basename $f`
 445                                         break;
 446                                 fi
 447                         done
 448                 fi
 449                 if test "${libfile:-unset}" != "unset"; then
 450                         OPENH323_SUFFIX=`eval "echo ${libfile} | sed -e 's/libh323_${PWLIB_PLATFORM}_\(@<:@^.@:>@*\)\..*/\1/'"`
 451                 fi
 452                 case "${OPENH323_SUFFIX}" in
 453                         n)
 454                                 OPENH323_BUILD="notrace";;
 455                         r)
 456                                 OPENH323_BUILD="opt";;
 457                         d)
 458                                 OPENH323_BUILD="debug";;
 459                         *)
 460                                 OPENH323_BUILD="notrace";;
 461                 esac
 462                 AC_MSG_RESULT(${OPENH323_BUILD})
 463
 464                 AC_SUBST([OPENH323_SUFFIX])
 465                 AC_SUBST([OPENH323_BUILD])
 466         fi
 467 ])
 468
 469
 470 # AST_FUNC_FORK
 471 # -------------
 472 AN_FUNCTION([fork],  [AST_FUNC_FORK])
 473 AN_FUNCTION([vfork], [AST_FUNC_FORK])
 474 AC_DEFUN([AST_FUNC_FORK],
 475 [AC_REQUIRE([AC_TYPE_PID_T])dnl
 476 AC_CHECK_HEADERS(vfork.h)
 477 AC_CHECK_FUNCS(fork vfork)
 478 if test "x$ac_cv_func_fork" = xyes; then
 479   _AST_FUNC_FORK
 480 else
 481   ac_cv_func_fork_works=$ac_cv_func_fork
 482 fi
 483 if test "x$ac_cv_func_fork_works" = xcross; then
 484   case $host in
 485     *-*-amigaos* | *-*-msdosdjgpp* | *-*-uclinux* )
 486       # Override, as these systems have only a dummy fork() stub
 487       ac_cv_func_fork_works=no
 488       ;;
 489     *)
 490       ac_cv_func_fork_works=yes
 491       ;;
 492   esac
 493   AC_MSG_WARN([result $ac_cv_func_fork_works guessed because of cross compilation])
 494 fi
 495 ac_cv_func_vfork_works=$ac_cv_func_vfork
 496 if test "x$ac_cv_func_vfork" = xyes; then
 497   _AC_FUNC_VFORK
 498 fi;
 499 if test "x$ac_cv_func_fork_works" = xcross; then
 500   ac_cv_func_vfork_works=$ac_cv_func_vfork
 501   AC_MSG_WARN([result $ac_cv_func_vfork_works guessed because of cross compilation])
 502 fi
 503
 504 if test "x$ac_cv_func_vfork_works" = xyes; then
 505   AC_DEFINE(HAVE_WORKING_VFORK, 1, [Define to 1 if `vfork' works.])
 506 else
 507   AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
 508 fi
 509 if test "x$ac_cv_func_fork_works" = xyes; then
 510   AC_DEFINE(HAVE_WORKING_FORK, 1, [Define to 1 if `fork' works.])
 511 fi
 512 ])# AST_FUNC_FORK
 513
 514
 515 # _AST_FUNC_FORK
 516 # -------------
 517 AC_DEFUN([_AST_FUNC_FORK],
 518   [AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
 519     [AC_RUN_IFELSE(
 520       [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 521         [
 522           /* By Ruediger Kuhlmann. */
 523           return fork () < 0;
 524         ])],
 525       [ac_cv_func_fork_works=yes],
 526       [ac_cv_func_fork_works=no],
 527       [ac_cv_func_fork_works=cross])])]
 528 )# _AST_FUNC_FORK