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_$1])
  38 ])
  39
  40 # AST_EXT_LIB_CHECK([package symbol name], [package library name], [function to check], [package header], [additional LIB data])
  41
  42 AC_DEFUN([AST_EXT_LIB_CHECK],
  43 [
  44 if test "${USE_$1}" != "no"; then
  45    pbxlibdir=""
  46    if test "x${$1_DIR}" != "x"; then
  47       if test -d ${$1_DIR}/lib; then
  48          pbxlibdir="-L${$1_DIR}/lib"
  49       else
  50          pbxlibdir="-L${$1_DIR}"
  51       fi
  52    fi
  53    AC_CHECK_LIB([$2], [$3], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], ${pbxlibdir} $5)
  54
  55    if test "${AST_$1_FOUND}" = "yes"; then
  56       $1_LIB="-l$2 $5"
  57       $1_HEADER_FOUND="1"
  58       if test "x${$1_DIR}" != "x"; then
  59          $1_LIB="${pbxlibdir} ${$1_LIB}"
  60          $1_INCLUDE="-I${$1_DIR}/include"
  61          if test "x$4" != "x" ; then
  62             AC_CHECK_HEADER([${$1_DIR}/include/$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0] )
  63          fi
  64       else
  65          if test "x$4" != "x" ; then
  66             AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0] )
  67          fi
  68       fi
  69       if test "x${$1_HEADER_FOUND}" = "x0" ; then
  70          if test ! -z "${$1_MANDATORY}" ;
  71          then
  72             AC_MSG_NOTICE([***])
  73             AC_MSG_NOTICE([*** It appears that you do not have the $2 development package installed.])
  74             AC_MSG_NOTICE([*** Please install it to include ${$1_DESCRIP} support, or re-run configure])
  75             AC_MSG_NOTICE([*** without explicitly specifying --with-${$1_OPTION}])
  76             exit 1
  77          fi
  78          $1_LIB=""
  79          $1_INCLUDE=""
  80          PBX_$1=0
  81       else
  82          PBX_$1=1
  83          AC_DEFINE_UNQUOTED([HAVE_$1], 1, [Define to indicate the ${$1_DESCRIP} library])
  84       fi
  85    elif test ! -z "${$1_MANDATORY}";
  86    then
  87       AC_MSG_NOTICE([***])
  88       AC_MSG_NOTICE([*** The ${$1_DESCRIP} installation on this system appears to be broken.])
  89       AC_MSG_NOTICE([*** Either correct the installation, or run configure])
  90       AC_MSG_NOTICE([*** without explicitly specifying --with-${$1_OPTION}])
  91       exit 1
  92    fi
  93 fi
  94 ])
  95
  96
  97 AC_DEFUN(
  98 [AST_CHECK_GNU_MAKE], [AC_CACHE_CHECK(for GNU make, GNU_MAKE,
  99    GNU_MAKE='Not Found' ;
 100    GNU_MAKE_VERSION_MAJOR=0 ;
 101    GNU_MAKE_VERSION_MINOR=0 ;
 102    for a in make gmake gnumake ; do
 103       if test -z "$a" ; then continue ; fi ;
 104       if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
 105          GNU_MAKE=$a ;
 106          GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
 107          GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
 108          break;
 109       fi
 110    done ;
 111 ) ;
 112 if test  "x$GNU_MAKE" = "xNot Found"  ; then
 113    AC_MSG_ERROR( *** Please install GNU make.  It is required to build Asterisk!)
 114    exit 1
 115 fi
 116 AC_SUBST([GNU_MAKE])
 117 ])
 118
 119
 120 AC_DEFUN(
 121 [AST_CHECK_PWLIB], [
 122 PWLIB_INCDIR=
 123 PWLIB_LIBDIR=
 124 if test "${PWLIBDIR:-unset}" != "unset" ; then
 125   AC_CHECK_FILE(${PWLIBDIR}/version.h, HAS_PWLIB=1, )
 126 fi
 127 if test "${HAS_PWLIB:-unset}" = "unset" ; then
 128   if test "${OPENH323DIR:-unset}" != "unset"; then
 129     AC_CHECK_FILE(${OPENH323DIR}/../pwlib/version.h, HAS_PWLIB=1, )
 130   fi
 131   if test "${HAS_PWLIB:-unset}" != "unset" ; then
 132     PWLIBDIR="${OPENH323DIR}/../pwlib"
 133   else
 134     AC_CHECK_FILE(${HOME}/pwlib/include/ptlib.h, HAS_PWLIB=1, )
 135     if test "${HAS_PWLIB:-unset}" != "unset" ; then
 136       PWLIBDIR="${HOME}/pwlib"
 137     else
 138       AC_CHECK_FILE(/usr/local/include/ptlib.h, HAS_PWLIB=1, )
 139       if test "${HAS_PWLIB:-unset}" != "unset" ; then
 140         AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/bin)
 141         if test "${PTLIB_CONFIG:-unset}" = "unset" ; then
 142           AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/local/share/pwlib/make)
 143         fi
 144         PWLIB_INCDIR="/usr/local/include"
 145         PWLIB_LIBDIR="/usr/local/lib"
 146       else
 147         AC_CHECK_FILE(/usr/include/ptlib.h, HAS_PWLIB=1, )
 148         if test "${HAS_PWLIB:-unset}" != "unset" ; then
 149           AC_PATH_PROG(PTLIB_CONFIG, ptlib-config, , /usr/share/pwlib/make)
 150           PWLIB_INCDIR="/usr/include"
 151           PWLIB_LIBDIR="/usr/lib"
 152         fi
 153       fi
 154     fi
 155   fi
 156 fi
 157
 158 #if test "${HAS_PWLIB:-unset}" = "unset" ; then
 159 #  echo "Cannot find pwlib - please install or set PWLIBDIR and try again"
 160 #  exit
 161 #fi
 162
 163 if test "${HAS_PWLIB:-unset}" != "unset" ; then
 164   if test "${PWLIBDIR:-unset}" = "unset" ; then
 165     if test "${PTLIB_CONFIG:-unset}" != "unset" ; then
 166       PWLIBDIR=`$PTLIB_CONFIG --prefix`
 167     else
 168       echo "Cannot find ptlib-config - please install and try again"
 169       exit
 170     fi
 171   fi
 172
 173   if test "x$PWLIBDIR" = "x/usr" -o "x$PWLIBDIR" = "x/usr/"; then
 174     PWLIBDIR="/usr/share/pwlib"
 175     PWLIB_INCDIR="/usr/include"
 176     PWLIB_LIBDIR="/usr/lib"
 177   fi
 178   if test "x$PWLIBDIR" = "x/usr/local" -o "x$PWLIBDIR" = "x/usr/"; then
 179     PWLIBDIR="/usr/local/share/pwlib"
 180     PWLIB_INCDIR="/usr/local/include"
 181     PWLIB_LIBDIR="/usr/local/lib"
 182   fi
 183
 184   if test "${PWLIB_INCDIR:-unset}" = "unset"; then
 185     PWLIB_INCDIR="${PWLIBDIR}/include"
 186   fi
 187   if test "${PWLIB_LIBDIR:-unset}" = "unset"; then
 188     PWLIB_LIBDIR="${PWLIBDIR}/lib"
 189   fi
 190
 191   AC_SUBST([PWLIBDIR])
 192   AC_SUBST([PWLIB_INCDIR])
 193   AC_SUBST([PWLIB_LIBDIR])
 194 fi
 195 ])
 196
 197
 198 AC_DEFUN(
 199 [AST_CHECK_OPENH323_PLATFORM], [
 200 PWLIB_OSTYPE=
 201 case "$host_os" in
 202   linux*)          PWLIB_OSTYPE=linux ;
 203                 ;;
 204   freebsd* )       PWLIB_OSTYPE=FreeBSD ;
 205                 ;;
 206   openbsd* )       PWLIB_OSTYPE=OpenBSD ;
 207                                    ENDLDLIBS="-lossaudio" ;
 208                 ;;
 209   netbsd* )        PWLIB_OSTYPE=NetBSD ;
 210                                    ENDLDLIBS="-lossaudio" ;
 211                 ;;
 212   solaris* | sunos* ) PWLIB_OSTYPE=solaris ;
 213                 ;;
 214   darwin* )            PWLIB_OSTYPE=Darwin ;
 215                 ;;
 216   beos*)           PWLIB_OSTYPE=beos ;
 217                    STDCCFLAGS="$STDCCFLAGS -D__BEOS__"
 218                 ;;
 219   cygwin*)         PWLIB_OSTYPE=cygwin ;
 220                 ;;
 221   mingw*)              PWLIB_OSTYPE=mingw ;
 222                            STDCCFLAGS="$STDCCFLAGS -mms-bitfields" ;
 223                            ENDLDLIBS="-lwinmm -lwsock32 -lsnmpapi -lmpr -lcomdlg32 -lgdi32 -lavicap32" ;
 224                 ;;
 225   * )                  PWLIB_OSTYPE="$host_os" ;
 226                            AC_MSG_WARN("OS $PWLIB_OSTYPE not recognized - proceed with caution!") ;
 227                 ;;
 228 esac
 229
 230 PWLIB_MACHTYPE=
 231 case "$host_cpu" in
 232    x86 | i686 | i586 | i486 | i386 ) PWLIB_MACHTYPE=x86
 233                    ;;
 234
 235    x86_64)         PWLIB_MACHTYPE=x86_64 ;
 236                    P_64BIT=1 ;
 237                    LIB64=1 ;
 238                    ;;
 239
 240    alpha | alphaev56 | alphaev6 | alphaev67 | alphaev7) PWLIB_MACHTYPE=alpha ;
 241                    P_64BIT=1 ;
 242                    ;;
 243
 244    sparc )         PWLIB_MACHTYPE=sparc ;
 245                    ;;
 246
 247    powerpc )       PWLIB_MACHTYPE=ppc ;
 248                    ;;
 249
 250    ppc )           PWLIB_MACHTYPE=ppc ;
 251                    ;;
 252
 253    powerpc64 )     PWLIB_MACHTYPE=ppc64 ;
 254                    P_64BIT=1 ;
 255                    LIB64=1 ;
 256                    ;;
 257
 258    ppc64 )         PWLIB_MACHTYPE=ppc64 ;
 259                    P_64BIT=1 ;
 260                    LIB64=1 ;
 261                    ;;
 262
 263    ia64)           PWLIB_MACHTYPE=ia64 ;
 264                    P_64BIT=1 ;
 265                    ;;
 266
 267    s390x)          PWLIB_MACHTYPE=s390x ;
 268                    P_64BIT=1 ;
 269                    LIB64=1 ;
 270                    ;;
 271
 272    s390)           PWLIB_MACHTYPE=s390 ;
 273                    ;;
 274
 275    * )             PWLIB_MACHTYPE="$host_cpu";
 276                    AC_MSG_WARN("CPU $PWLIB_MACHTYPE not recognized - proceed with caution!") ;;
 277 esac
 278
 279 PWLIB_PLATFORM="${PWLIB_OSTYPE}_${PWLIB_MACHTYPE}"
 280
 281 AC_SUBST([PWLIB_PLATFORM])
 282 ])
 283
 284
 285 AC_DEFUN(
 286 [AST_CHECK_OPENH323], [
 287 OPENH323_INCDIR=
 288 OPENH323_LIBDIR=
 289 if test "${OPENH323DIR:-unset}" != "unset" ; then
 290   AC_CHECK_FILE(${OPENH323DIR}/version.h, HAS_OPENH323=1, )
 291 fi
 292 if test "${HAS_OPENH323:-unset}" = "unset" ; then
 293   AC_CHECK_FILE(${PWLIBDIR}/../openh323/version.h, OPENH323DIR="${PWLIBDIR}/../openh323"; HAS_OPENH323=1, )
 294   if test "${HAS_OPENH323:-unset}" != "unset" ; then
 295     OPENH323DIR="${PWLIBDIR}/../openh323"
 296     AC_CHECK_FILE(${OPENH323DIR}/include/h323.h, , OPENH323_INCDIR="${PWLIB_INCDIR}/openh323"; OPENH323_LIBDIR="${PWLIB_LIBDIR}")
 297   else
 298     AC_CHECK_FILE(${HOME}/openh323/include/h323.h, HAS_OPENH323=1, )
 299     if test "${HAS_OPENH323:-unset}" != "unset" ; then
 300       OPENH323DIR="${HOME}/openh323"
 301     else
 302       AC_CHECK_FILE(/usr/local/include/openh323/h323.h, HAS_OPENH323=1, )
 303       if test "${HAS_OPENH323:-unset}" != "unset" ; then
 304         OPENH323DIR="/usr/local/share/openh323"
 305         OPENH323_INCDIR="/usr/local/include/openh323"
 306         OPENH323_LIBDIR="/usr/local/lib"
 307       else
 308         AC_CHECK_FILE(/usr/include/openh323/h323.h, HAS_OPENH323=1, )
 309         if test "${HAS_OPENH323:-unset}" != "unset" ; then
 310           OPENH323DIR="/usr/share/openh323"
 311           OPENH323_INCDIR="/usr/include/openh323"
 312           OPENH323_LIBDIR="/usr/lib"
 313         fi
 314       fi
 315     fi
 316   fi
 317 fi
 318
 319 if test "${HAS_OPENH323:-unset}" != "unset" ; then
 320   if test "${OPENH323_INCDIR:-unset}" = "unset"; then
 321     OPENH323_INCDIR="${OPENH323DIR}/include"
 322   fi
 323   if test "${OPENH323_LIBDIR:-unset}" = "unset"; then
 324     OPENH323_LIBDIR="${OPENH323DIR}/lib"
 325   fi
 326
 327   AC_SUBST([OPENH323DIR])
 328   AC_SUBST([OPENH323_INCDIR])
 329   AC_SUBST([OPENH323_LIBDIR])
 330 fi
 331 ])
 332
 333
 334 AC_DEFUN(
 335 [AST_CHECK_PWLIB_VERSION], [
 336         if test "${HAS_$2:-unset}" != "unset"; then
 337                 $2_VERSION=`grep "$2_VERSION" ${$2_INCDIR}/$3 | cut -f2 -d ' ' | sed -e 's/"//g'`
 338                 $2_MAJOR_VERSION=`echo ${$2_VERSION} | cut -f1 -d.`
 339                 $2_MINOR_VERSION=`echo ${$2_VERSION} | cut -f2 -d.`
 340                 $2_BUILD_NUMBER=`echo ${$2_VERSION} | cut -f3 -d.`
 341                 let $2_VER=${$2_MAJOR_VERSION}*10000+${$2_MINOR_VERSION}*100+${$2_BUILD_NUMBER}
 342                 let $2_REQ=$4*10000+$5*100+$6
 343
 344                 AC_MSG_CHECKING(if $1 version ${$2_VERSION} is compatible with chan_h323)
 345                 if test ${$2_VER} -lt ${$2_REQ}; then
 346                         AC_MSG_RESULT(no)
 347                         unset HAS_$2
 348                 else
 349                         AC_MSG_RESULT(yes)
 350                 fi
 351         fi
 352 ])
 353
 354
 355 AC_DEFUN(
 356 [AST_CHECK_PWLIB_BUILD], [
 357         if test "${HAS_$2:-unset}" != "unset"; then
 358            AC_MSG_CHECKING($1 installation validity)
 359
 360            saved_cppflags="${CPPFLAGS}"
 361            saved_libs="${LIBS}"
 362            LIBS="${LIBS} -L${$2_LIBDIR} -l${PLATFORM_$2} $7"
 363            CPPFLAGS="${CPPFLAGS} -I${$2_INCDIR} $6"
 364
 365            AC_LANG_PUSH([C++])
 366
 367            AC_LINK_IFELSE(
 368                 [AC_LANG_PROGRAM([$4],[$5])],
 369                 [       AC_MSG_RESULT(yes)
 370                         ac_cv_lib_$2="yes"
 371                 ],
 372                 [       AC_MSG_RESULT(no)
 373                         ac_cv_lib_$2="no"
 374                 ]
 375                 )
 376
 377            AC_LANG_POP([C++])
 378
 379            LIBS="${saved_libs}"
 380            CPPFLAGS="${saved_cppflags}"
 381
 382            if test "${ac_cv_lib_$2}" = "yes"; then
 383               if test "${$2_LIBDIR}" != "" -a "${$2_LIBDIR}" != "/usr/lib"; then
 384                  $2_LIB="-L${$2_LIBDIR} -l${PLATFORM_$2}"
 385               else
 386                  $2_LIB="-l${PLATFORM_$2}"
 387               fi
 388               if test "${$2_INCDIR}" != "" -a "${$2_INCDIR}" != "/usr/include"; then
 389                  $2_INCLUDE="-I${$2_INCDIR}"
 390               fi
 391                   PBX_$2=1
 392                   AC_DEFINE([HAVE_$2], 1, [$3])
 393            fi
 394         fi
 395 ])
 396
 397 AC_DEFUN(
 398 [AST_CHECK_OPENH323_BUILD], [
 399         if test "${HAS_OPENH323:-unset}" != "unset"; then
 400                 AC_MSG_CHECKING(OpenH323 build option)
 401                 OPENH323_SUFFIX=
 402                 files=`ls -l ${OPENH323_LIBDIR}/libh323_${PWLIB_PLATFORM}_*.so*`
 403                 libfile=
 404                 if test -n "$files"; then
 405                         for f in $files; do
 406                                 if test -f $f -a ! -L $f; then
 407                                         libfile=`basename $f`
 408                                         break;
 409                                 fi
 410                         done
 411                 fi
 412                 if test "${libfile:-unset}" != "unset"; then
 413                         OPENH323_SUFFIX=`eval "echo ${libfile} | sed -e 's/libh323_${PWLIB_PLATFORM}_\(@<:@^.@:>@*\)\..*/\1/'"`
 414                 fi
 415                 case "${OPENH323_SUFFIX}" in
 416                         n)
 417                                 OPENH323_BUILD="notrace";;
 418                         r)
 419                                 OPENH323_BUILD="opt";;
 420                         d)
 421                                 OPENH323_BUILD="debug";;
 422                         *)
 423                                 OPENH323_BUILD="notrace";;
 424                 esac
 425                 AC_MSG_RESULT(${OPENH323_BUILD})
 426
 427                 AC_SUBST([OPENH323_SUFFIX])
 428                 AC_SUBST([OPENH323_BUILD])
 429         fi
 430 ])
 431
 432
 433 # AST_FUNC_FORK
 434 # -------------
 435 AN_FUNCTION([fork],  [AST_FUNC_FORK])
 436 AN_FUNCTION([vfork], [AST_FUNC_FORK])
 437 AC_DEFUN([AST_FUNC_FORK],
 438 [AC_REQUIRE([AC_TYPE_PID_T])dnl
 439 AC_CHECK_HEADERS(vfork.h)
 440 AC_CHECK_FUNCS(fork vfork)
 441 if test "x$ac_cv_func_fork" = xyes; then
 442   _AST_FUNC_FORK
 443 else
 444   ac_cv_func_fork_works=$ac_cv_func_fork
 445 fi
 446 if test "x$ac_cv_func_fork_works" = xcross; then
 447   case $host in
 448     *-*-amigaos* | *-*-msdosdjgpp* | *-*-uclinux* )
 449       # Override, as these systems have only a dummy fork() stub
 450       ac_cv_func_fork_works=no
 451       ;;
 452     *)
 453       ac_cv_func_fork_works=yes
 454       ;;
 455   esac
 456   AC_MSG_WARN([result $ac_cv_func_fork_works guessed because of cross compilation])
 457 fi
 458 ac_cv_func_vfork_works=$ac_cv_func_vfork
 459 if test "x$ac_cv_func_vfork" = xyes; then
 460   _AC_FUNC_VFORK
 461 fi;
 462 if test "x$ac_cv_func_fork_works" = xcross; then
 463   ac_cv_func_vfork_works=$ac_cv_func_vfork
 464   AC_MSG_WARN([result $ac_cv_func_vfork_works guessed because of cross compilation])
 465 fi
 466
 467 if test "x$ac_cv_func_vfork_works" = xyes; then
 468   AC_DEFINE(HAVE_WORKING_VFORK, 1, [Define to 1 if `vfork' works.])
 469 else
 470   AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
 471 fi
 472 if test "x$ac_cv_func_fork_works" = xyes; then
 473   AC_DEFINE(HAVE_WORKING_FORK, 1, [Define to 1 if `fork' works.])
 474 fi
 475 ])# AST_FUNC_FORK
 476
 477
 478 # _AST_FUNC_FORK
 479 # -------------
 480 AC_DEFUN([_AST_FUNC_FORK],
 481   [AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
 482     [AC_RUN_IFELSE(
 483       [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 484         [
 485           /* By Ruediger Kuhlmann. */
 486           return fork () < 0;
 487         ])],
 488       [ac_cv_func_fork_works=yes],
 489       [ac_cv_func_fork_works=no],
 490       [ac_cv_func_fork_works=cross])])]
 491 )# _AST_FUNC_FORK
 492
 493 # AST_PROG_LD
 494 # ----------
 495 # find the pathname to the GNU or non-GNU linker
 496 AC_DEFUN([AST_PROG_LD],
 497 [AC_ARG_WITH([gnu-ld],
 498     [AC_HELP_STRING([--with-gnu-ld],
 499         [assume the C compiler uses GNU ld @<:@default=no@:>@])],
 500     [test "$withval" = no || with_gnu_ld=yes],
 501     [with_gnu_ld=no])
 502 AC_REQUIRE([AST_PROG_SED])dnl
 503 AC_REQUIRE([AC_PROG_CC])dnl
 504 AC_REQUIRE([AC_CANONICAL_HOST])dnl
 505 AC_REQUIRE([AC_CANONICAL_BUILD])dnl
 506 ac_prog=ld
 507 if test "$GCC" = yes; then
 508   # Check if gcc -print-prog-name=ld gives a path.
 509   AC_MSG_CHECKING([for ld used by $CC])
 510   case $host in
 511   *-*-mingw*)
 512     # gcc leaves a trailing carriage return which upsets mingw
 513     ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
 514   *)
 515     ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
 516   esac
 517   case $ac_prog in
 518     # Accept absolute paths.
 519     [[\\/]]* | ?:[[\\/]]*)
 520       re_direlt='/[[^/]][[^/]]*/\.\./'
 521       # Canonicalize the pathname of ld
 522       ac_prog=`echo $ac_prog| $SED 's%\\\\%/%g'`
 523       while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
 524         ac_prog=`echo $ac_prog| $SED "s%$re_direlt%/%"`
 525       done
 526       test -z "$LD" && LD="$ac_prog"
 527       ;;
 528   "")
 529     # If it fails, then pretend we aren't using GCC.
 530     ac_prog=ld
 531     ;;
 532   *)
 533     # If it is relative, then search for the first ld in PATH.
 534     with_gnu_ld=unknown
 535     ;;
 536   esac
 537 elif test "$with_gnu_ld" = yes; then
 538   AC_MSG_CHECKING([for GNU ld])
 539 else
 540   AC_MSG_CHECKING([for non-GNU ld])
 541 fi
 542 AC_CACHE_VAL(lt_cv_path_LD,
 543 [if test -z "$LD"; then
 544   lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
 545   for ac_dir in $PATH; do
 546     IFS="$lt_save_ifs"
 547     test -z "$ac_dir" && ac_dir=.
 548     if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
 549       lt_cv_path_LD="$ac_dir/$ac_prog"
 550       # Check to see if the program is GNU ld.  I'd rather use --version,
 551       # but apparently some variants of GNU ld only accept -v.
 552       # Break only if it was the GNU/non-GNU ld that we prefer.
 553       case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
 554       *GNU* | *'with BFD'*)
 555         test "$with_gnu_ld" != no && break
 556         ;;
 557       *)
 558         test "$with_gnu_ld" != yes && break
 559         ;;
 560       esac
 561     fi
 562   done
 563   IFS="$lt_save_ifs"
 564 else
 565   lt_cv_path_LD="$LD" # Let the user override the test with a path.
 566 fi])
 567 LD="$lt_cv_path_LD"
 568 if test -n "$LD"; then
 569   AC_MSG_RESULT($LD)
 570 else
 571   AC_MSG_RESULT(no)
 572 fi
 573 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
 574 AST_PROG_LD_GNU
 575 ])# AST_PROG_LD
 576
 577
 578 # AST_PROG_LD_GNU
 579 # --------------
 580 AC_DEFUN([AST_PROG_LD_GNU],
 581 [AC_REQUIRE([AST_PROG_EGREP])dnl
 582 AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
 583 [# I'd rather use --version here, but apparently some GNU lds only accept -v.
 584 case `$LD -v 2>&1 </dev/null` in
 585 *GNU* | *'with BFD'*)
 586   lt_cv_prog_gnu_ld=yes
 587   ;;
 588 *)
 589   lt_cv_prog_gnu_ld=no
 590   ;;
 591 esac])
 592 with_gnu_ld=$lt_cv_prog_gnu_ld
 593 ])# AST_PROG_LD_GNU
 594
 595 # AST_PROG_EGREP
 596 # -------------
 597 m4_ifndef([AST_PROG_EGREP], [AC_DEFUN([AST_PROG_EGREP],
 598 [AC_CACHE_CHECK([for egrep], [ac_cv_prog_egrep],
 599    [if echo a | (grep -E '(a|b)') >/dev/null 2>&1
 600     then ac_cv_prog_egrep='grep -E'
 601     else ac_cv_prog_egrep='egrep'
 602     fi])
 603  EGREP=$ac_cv_prog_egrep
 604  AC_SUBST([EGREP])
 605 ])]) # AST_PROG_EGREP
 606
 607 # AST_PROG_SED
 608 # -----------
 609 # Check for a fully functional sed program that truncates
 610 # as few characters as possible.  Prefer GNU sed if found.
 611 AC_DEFUN([AST_PROG_SED],
 612 [AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
 613     [dnl ac_script should not contain more than 99 commands (for HP-UX sed),
 614      dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
 615      ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
 616      for ac_i in 1 2 3 4 5 6 7; do
 617        ac_script="$ac_script$as_nl$ac_script"
 618      done
 619      echo "$ac_script" | sed 99q >conftest.sed
 620      $as_unset ac_script || ac_script=
 621      _AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
 622         [_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
 623                 ["$ac_path_SED" -f conftest.sed])])])
 624  SED="$ac_cv_path_SED"
 625  AC_SUBST([SED])dnl
 626  rm -f conftest.sed
 627 ])# AST_PROG_SED
 628