libopts.m4

基于ntp协议的网络时间服务程序

dnl  -*- buffer-read-only: t -*- vi: set ro:
dnl 
dnl DO NOT EDIT THIS FILE   (libopts.m4)
dnl 
dnl It has been AutoGen-ed  Saturday May  5, 2007 at 12:02:37 PM PDT
dnl From the definitions    libopts.def
dnl and the template file   conftest.tpl
dnl
dnl do always before generated macros:
dnl
AC_DEFUN([INVOKE_LIBOPTS_MACROS_FIRST],[
[if test X${INVOKE_LIBOPTS_MACROS_FIRST_done} != Xyes ; then]
  # =================
  # AC_HEADER_STDC
  # =================
  AC_HEADER_STDC
  # =================
  # AC_HEADER_DIRENT
  # =================
  AC_HEADER_DIRENT
  
  # =================
  # AC_CHECK_HEADERS
  # =================
  AC_CHECK_HEADERS(dlfcn.h errno.h fcntl.h libgen.h memory.h netinet/in.h \
    setjmp.h sys/mman.h sys/param.h sys/poll.h sys/procset.h sys/select.h \
    sys/socket.h sys/stropts.h sys/time.h sys/un.h sys/wait.h unistd.h    \
    utime.h sysexits.h)
  
  # --------------------------------------------
  # Verify certain entries from AC_CHECK_HEADERS
  # --------------------------------------------
  [for f in sys_types sys_mman sys_param sys_stat sys_wait \
           string errno stdlib memory setjmp
  do eval as_ac_var=\${ac_cv_header_${f}_h+set}
     test "${as_ac_var}" = set] || \
       AC_MSG_ERROR([You must have ${f}.h on your system])
  done
  
  # ================================================
  # AC_CHECK_HEADERS: stdarg.h is present define HAVE_STDARG_H, otherwise
  # if varargs.h is present define HAVE_VARARGS_H.
  # ================================================
  AC_CHECK_HEADERS(stdarg.h varargs.h, break)
  [if test `eval echo '${'$as_ac_Header'}'` != yes; then]
    AC_MSG_ERROR([You must have stdarg.h or varargs.h on your system])
  fi
  
  # ================================================
  # Similarly for the string.h and strings.h headers
  # ================================================
  AC_CHECK_HEADERS(string.h strings.h, break)
  [if test `eval echo '${'$as_ac_Header'}'` != yes; then]
    AC_MSG_ERROR([You must have string.h or strings.h on your system])
  fi
  
  # =====================
  # ...and limits headers
  # =====================
  AC_CHECK_HEADERS(limits.h sys/limits.h values.h, break)
  [if test `eval echo '${'$as_ac_Header'}'` != yes; then]
    AC_MSG_ERROR([You must have one of limits.h, sys/limits.h or values.h])
  fi
  
  # ========================
  # ...and int types headers
  # ========================
  AC_CHECK_HEADERS(stdint.h inttypes.h, break)
  AC_CHECK_TYPES([int8_t, uint8_t, int16_t, uint16_t, int32_t, uint32_t,
     intptr_t, uint_t])
  
  # ====================
  # uintptr type & sizes
  # ====================
  AC_CHECK_TYPES([uintptr_t], ,
         [AC_DEFINE([uintptr_t], unsigned long,
                    [Alternate uintptr_t for systems without it.])])
  AC_CHECK_SIZEOF(char*, 4)
  AC_CHECK_SIZEOF(int,   4)
  AC_CHECK_SIZEOF(long,  4)
  AC_CHECK_SIZEOF(short, 2)
  
  # ----------------------------------------------------------------------
  # AC_CHECK_LIB for SVR4 libgen, and use it if it defines pathfind.
  # ----------------------------------------------------------------------
  AC_CHECK_LIB(gen, pathfind)
  AC_FUNC_VPRINTF
  AC_CHECK_FUNCS([mmap canonicalize_file_name snprintf strdup strchr strrchr])
[  INVOKE_LIBOPTS_MACROS_FIRST_done=yes
fi]])

dnl
dnl @synopsis  INVOKE_LIBOPTS_MACROS
dnl
dnl  This macro will invoke the AutoConf macros specified in libopts.def
dnl  that have not been disabled with "omit-invocation".
dnl
AC_DEFUN([LIBOPTS_WITH_REGEX_HEADER],[
  AC_ARG_WITH([regex-header],
    AC_HELP_STRING([--with-regex-header], [a reg expr header is specified]),
    [libopts_cv_with_regex_header=${with_regex_header}],
    AC_CACHE_CHECK([whether a reg expr header is specified], libopts_cv_with_regex_header,
      libopts_cv_with_regex_header=no)
  ) # end of AC_ARG_WITH

  if test "X${libopts_cv_with_regex_header}" != Xno
  then
    AC_DEFINE_UNQUOTED([REGEX_HEADER],[<${libopts_cv_with_regex_header}>])
  else
    AC_DEFINE([REGEX_HEADER],[<regex.h>],[name of regex header file])
  fi
  
]) # end of AC_DEFUN of LIBOPTS_WITH_REGEX_HEADER


AC_DEFUN([LIBOPTS_WITHLIB_REGEX],[
  AC_ARG_WITH([libregex],
    AC_HELP_STRING([--with-libregex], [libregex installation prefix]),
    [libopts_cv_with_libregex_root=${with_libregex}],
    AC_CACHE_CHECK([whether with-libregex was specified], libopts_cv_with_libregex_root,
      libopts_cv_with_libregex_root=no)
  ) # end of AC_ARG_WITH libregex

  if test "${with_libguile+set}" = set && \
     test "${withval}" = no
  then ## disabled by request
    libopts_cv_with_libregex_root=no
    libopts_cv_with_libregex_cflags=no
    libopts_cv_with_libregex_libs=no
  else

  AC_ARG_WITH([libregex-cflags],
    AC_HELP_STRING([--with-libregex-cflags], [libregex compile flags]),
    [libopts_cv_with_libregex_cflags=${with_regex_cflags}],
    AC_CACHE_CHECK([whether with-libregex-cflags was specified], libopts_cv_with_libregex_cflags,
      libopts_cv_with_libregex_cflags=no)
  ) # end of AC_ARG_WITH libregex-cflags

  AC_ARG_WITH([libregex-libs],
    AC_HELP_STRING([--with-libregex-libs], [libregex link command arguments]),
    [libopts_cv_with_libregex_libs=${with_regex_libs}],
    AC_CACHE_CHECK([whether with-libregex-libs was specified], libopts_cv_with_libregex_libs,
      libopts_cv_with_libregex_libs=no)
  ) # end of AC_ARG_WITH libregex-libs

  case "X${libopts_cv_with_libregex_cflags}" in
  Xyes|Xno|X )
    case "X${libopts_cv_with_libregex_root}" in
    Xyes|Xno|X ) libopts_cv_with_libregex_cflags=no ;;
    * )        libopts_cv_with_libregex_cflags=-I${libopts_cv_with_libregex_root}/include ;;
    esac
  esac
  case "X${libopts_cv_with_libregex_libs}" in
  Xyes|Xno|X )
    case "X${libopts_cv_with_libregex_root}" in
    Xyes|Xno|X ) libopts_cv_with_libregex_libs=no ;;
    * )        libopts_cv_with_libregex_libs="-L${libopts_cv_with_libregex_root}/lib -lregex";;
    esac
  esac
  libopts_save_CPPFLAGS="${CPPFLAGS}"
  libopts_save_LIBS="${LIBS}"
  fi ## disabled by request

  case "X${libopts_cv_with_libregex_cflags}" in
  Xyes|Xno|X )
    libopts_cv_with_libregex_cflags="" ;;
  * ) CPPFLAGS="${CPPFLAGS} ${libopts_cv_with_libregex_cflags}" ;;
  esac
  case "X${libopts_cv_with_libregex_libs}" in
  Xyes|Xno|X )
    libopts_cv_with_libregex_libs="" ;;
  * )
    LIBS="${LIBS} ${libopts_cv_with_libregex_libs}" ;;
  esac
  LIBREGEX_CFLAGS=""
  LIBREGEX_LIBS=""
  AC_MSG_CHECKING([whether libregex functions properly])
  AC_CACHE_VAL([libopts_cv_with_libregex],[
  AC_TRY_RUN([@%:@include <stdio.h>
@%:@include <stdlib.h>
@%:@include <sys/types.h>
@%:@include REGEX_HEADER
static regex_t re;
void comp_re( char const* pzPat ) {
  int res = regcomp( &re, pzPat, REG_EXTENDED|REG_ICASE|REG_NEWLINE );
  if (res == 0) return;
  exit( res ); }
int main() {
  regmatch_t m@<:@2@:>@;
  comp_re( "^.*\@S|@"   );
  comp_re( "()|no.*" );
  comp_re( "."       );
  if (regexec( &re, "X", 2, m, 0 ) != 0)  return 1;
  if ((m@<:@0@:>@.rm_so != 0) || (m@<:@0@:>@.rm_eo != 1)) {
    fputs( "error: regex -->.<-- did not match\n", stderr );
    return 1;
  }
  return 0; }],
    [libopts_cv_with_libregex=yes], [libopts_cv_with_libregex=no],
    [libopts_cv_with_libregex=no]) # end of AC_TRY_RUN 
  ]) # end of AC_CACHE_VAL for libopts_cv_with_libregex
  AC_MSG_RESULT([${libopts_cv_with_libregex}])

  if test "X${libopts_cv_with_libregex}" != Xno
  then
    AC_DEFINE([WITH_LIBREGEX],[1],
        [Define this if a working libregex can be found])
  else
    CPPFLAGS="${libopts_save_CPPFLAGS}"
    LIBS="${libopts_save_LIBS}"
  fi
  
]) # end of AC_DEFUN of LIBOPTS_WITHLIB_REGEX


AC_DEFUN([LIBOPTS_RUN_PATHFIND],[
  AC_MSG_CHECKING([whether pathfind(3) works])
  AC_CACHE_VAL([libopts_cv_run_pathfind],[
  AC_TRY_RUN([@%:@include <string.h>
@%:@include <stdlib.h>
int main (int argc, char** argv) {
   char* pz = pathfind( getenv( "PATH" ), "sh", "x" );
   return (pz == 0) ? 1 : 0;
}],
    [libopts_cv_run_pathfind=yes],[libopts_cv_run_pathfind=no],[libopts_cv_run_pathfind=no]
  ) # end of TRY_RUN
  ]) # end of AC_CACHE_VAL for libopts_cv_run_pathfind
  AC_MSG_RESULT([${libopts_cv_run_pathfind}])

  if test "X${libopts_cv_run_pathfind}" != Xno
  then
    AC_DEFINE([HAVE_PATHFIND],[1],
        [Define this if pathfind(3) works])
  fi
  
]) # end of AC_DEFUN of LIBOPTS_RUN_PATHFIND


AC_DEFUN([LIBOPTS_TEST_DEV_ZERO],[
  AC_MSG_CHECKING([whether /dev/zero is readable device])
  AC_CACHE_VAL([libopts_cv_test_dev_zero],[
    libopts_cv_test_dev_zero=`exec 2> /dev/null
dzero=\`ls -lL /dev/zero | egrep ^c......r\`
test -z "${dzero}" && exit 1
echo ${dzero}`
    if test $? -ne 0
    then libopts_cv_test_dev_zero=no
    elif test -z "$libopts_cv_test_dev_zero"
    then libopts_cv_test_dev_zero=no
    fi
  ]) # end of CACHE_VAL of libopts_cv_test_dev_zero
  AC_MSG_RESULT([${libopts_cv_test_dev_zero}])

  if test "X${libopts_cv_test_dev_zero}" != Xno
  then