aclocal.m4

linux 操作系统下对系统资源监控程序的编写

dnl aclocal.m4 generated automatically by aclocal 1.4-p6

dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.

dnl This is just copied m4s from need-declaration.m4 gnome-fileutils.m4
dnl gnome-supprt-checks.m4 and a little from gnome-libgtop-check.m4
dnl and finally libgtop-sysdeps.m4

dnl
dnl LIBGTOP_CHECK_TYPE
dnl
dnl Improved version of AC_CHECK_TYPE which takes into account
dnl that we need to #include some other header files on some
dnl systems to get some types.

dnl AC_LIBGTOP_CHECK_TYPE(TYPE, DEFAULT)
AC_DEFUN([AC_LIBGTOP_CHECK_TYPE],
[AC_REQUIRE([AC_HEADER_STDC])dnl
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(ac_cv_type_$1,
[AC_EGREP_CPP(dnl
changequote(<<,>>)dnl
<<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl
changequote([,]), [#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif

/* For Tru64 */
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
], ac_cv_type_$1=yes, ac_cv_type_$1=no)])dnl
AC_MSG_RESULT($ac_cv_type_$1)
if test $ac_cv_type_$1 = no; then
  AC_DEFINE($1, $2)
fi
])

dnl
dnl GNOME_LIBGTOP_TYPES
dnl
dnl some typechecks for libgtop.
dnl

AC_DEFUN([GNOME_LIBGTOP_TYPES],
[
        AC_CHECK_HEADERS(sys/bitypes.h)
])

dnl See whether we need a declaration for a function.
dnl GCC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES])
AC_DEFUN([GCC_NEED_DECLARATION],
[AC_MSG_CHECKING([whether $1 must be declared])
AC_CACHE_VAL(gcc_cv_decl_needed_$1,
[AC_TRY_COMPILE([
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
$2],
[char *(*pfn) = (char *(*)) $1],
eval "gcc_cv_decl_needed_$1=no", eval "gcc_cv_decl_needed_$1=yes")])
if eval "test \"`echo '$gcc_cv_decl_needed_'$1`\" = yes"; then
  AC_MSG_RESULT(yes)
  gcc_need_declarations="$gcc_need_declarations $1"
  gcc_tr_decl=NEED_DECLARATION_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
  AC_DEFINE_UNQUOTED($gcc_tr_decl)
else
  AC_MSG_RESULT(no)
fi
])dnl

dnl Check multiple functions to see whether each needs a declaration.
dnl GCC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES])
AC_DEFUN([GCC_NEED_DECLARATIONS],
[for ac_func in $1
do
GCC_NEED_DECLARATION($ac_func, $2)
done
]
)

dnl
dnl GNOME_FILEUTILS_CHECKS
dnl
dnl checks that are needed for the diskusage applet.
dnl

AC_DEFUN([GNOME_FILEUTILS_CHECKS],
[
AC_CHECK_HEADERS(fcntl.h sys/param.h sys/statfs.h sys/fstyp.h \
mnttab.h mntent.h sys/statvfs.h sys/vfs.h sys/mount.h \
sys/filsys.h sys/fs_types.h sys/fs/s5param.h)

AC_CHECK_FUNCS(bcopy endgrent endpwent fchdir ftime ftruncate \
getcwd getmntinfo gettimeofday isascii lchown \
listmntent memcpy mkfifo strchr strerror strrchr vprintf)

dnl Set some defaults when cross-compiling

if test x$cross_compiling = xyes ; then
        case "$host_os" in
        linux*)
          fu_cv_sys_mounted_getmntent1=yes
          fu_cv_sys_stat_statfs2_bsize=yes
          ;;
        sunos*)
          fu_cv_sys_stat_statfs4=yes
          ;;
        freebsd*)
          fu_cv_sys_stat_statfs2_bsize=yes
          ;;
        osf*)
          fu_cv_sys_stat_statfs3_osf1=yes
          ;;
        esac
fi

# Determine how to get the list of mounted filesystems.
list_mounted_fs=

# If the getmntent function is available but not in the standard library,
# make sure LIBS contains -lsun (on Irix4) or -lseq (on PTX).
AC_FUNC_GETMNTENT

# This test must precede the ones for getmntent because Unicos-9 is
# reported to have the getmntent function, but its support is incompatible
# with other getmntent implementations.

# NOTE: Normally, I wouldn't use a check for system type as I've done for
# `CRAY' below since that goes against the whole autoconf philosophy.  But
# I think there is too great a chance that some non-Cray system has a
# function named listmntent to risk the false positive.

if test -z "$list_mounted_fs"; then
# Cray UNICOS 9
AC_MSG_CHECKING([for listmntent of Cray/Unicos-9])
AC_CACHE_VAL(fu_cv_sys_mounted_cray_listmntent,
[fu_cv_sys_mounted_cray_listmntent=no
AC_EGREP_CPP(yes,
[#ifdef _CRAY
yes
#endif
], [test $ac_cv_func_listmntent = yes \
&& fu_cv_sys_mounted_cray_listmntent=yes]
)
]
)
AC_MSG_RESULT($fu_cv_sys_mounted_cray_listmntent)
if test $fu_cv_sys_mounted_cray_listmntent = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_LISTMNTENT)
fi
fi

if test $ac_cv_func_getmntent = yes; then

# This system has the getmntent function.
# Determine whether it's the one-argument variant or the two-argument one.

if test -z "$list_mounted_fs"; then
# 4.3BSD, SunOS, HP-UX, Dynix, Irix
AC_MSG_CHECKING([for one-argument getmntent function])
AC_CACHE_VAL(fu_cv_sys_mounted_getmntent1,
[test $ac_cv_header_mntent_h = yes \
&& fu_cv_sys_mounted_getmntent1=yes \
|| fu_cv_sys_mounted_getmntent1=no])
AC_MSG_RESULT($fu_cv_sys_mounted_getmntent1)
if test $fu_cv_sys_mounted_getmntent1 = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT1)
fi
fi

if test -z "$list_mounted_fs"; then
# SVR4
AC_MSG_CHECKING([for two-argument getmntent function])
AC_CACHE_VAL(fu_cv_sys_mounted_getmntent2,
[AC_EGREP_HEADER(getmntent, sys/mnttab.h,
fu_cv_sys_mounted_getmntent2=yes,
fu_cv_sys_mounted_getmntent2=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_getmntent2)
if test $fu_cv_sys_mounted_getmntent2 = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT2)
fi
fi

if test -z "$list_mounted_fs"; then
AC_MSG_ERROR([could not determine how to read list of mounted filesystems])
fi

fi

if test -z "$list_mounted_fs"; then
# DEC Alpha running OSF/1.
AC_MSG_CHECKING([for getfsstat function])
AC_CACHE_VAL(fu_cv_sys_mounted_getsstat,
[AC_TRY_LINK([
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/fs_types.h>],
[struct statfs *stats;
int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT); ],
fu_cv_sys_mounted_getsstat=yes,
fu_cv_sys_mounted_getsstat=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_getsstat)
if test $fu_cv_sys_mounted_getsstat = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETFSSTAT)
fi
fi

if test -z "$list_mounted_fs"; then
# AIX.
AC_MSG_CHECKING([for mntctl function and struct vmount])
AC_CACHE_VAL(fu_cv_sys_mounted_vmount,
[AC_TRY_CPP([#include <fshelp.h>],
fu_cv_sys_mounted_vmount=yes,
fu_cv_sys_mounted_vmount=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_vmount)
if test $fu_cv_sys_mounted_vmount = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_VMOUNT)
fi
fi

if test -z "$list_mounted_fs"; then
# SVR3
AC_MSG_CHECKING([for FIXME existence of three headers])
AC_CACHE_VAL(fu_cv_sys_mounted_fread_fstyp,
[AC_TRY_CPP([
#include <sys/statfs.h>
#include <sys/fstyp.h>
#include <mnttab.h>],
fu_cv_sys_mounted_fread_fstyp=yes,
fu_cv_sys_mounted_fread_fstyp=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_fread_fstyp)
if test $fu_cv_sys_mounted_fread_fstyp = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD_FSTYP)
fi
fi

if test -z "$list_mounted_fs"; then
# 4.4BSD and DEC OSF/1.
AC_MSG_CHECKING([for getmntinfo function])
AC_CACHE_VAL(fu_cv_sys_mounted_getmntinfo,
[
ok=
if test $ac_cv_func_getmntinfo = yes; then
AC_EGREP_HEADER(f_type;, sys/mount.h,
ok=yes)
fi
test -n "$ok" \
&& fu_cv_sys_mounted_getmntinfo=yes \
|| fu_cv_sys_mounted_getmntinfo=no
])
AC_MSG_RESULT($fu_cv_sys_mounted_getmntinfo)
if test $fu_cv_sys_mounted_getmntinfo = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTINFO)
fi
fi

# FIXME: add a test for netbsd-1.1 here

if test -z "$list_mounted_fs"; then
# Ultrix
AC_MSG_CHECKING([for getmnt function])
AC_CACHE_VAL(fu_cv_sys_mounted_getmnt,
[AC_TRY_CPP([
#include <sys/fs_types.h>
#include <sys/mount.h>],
fu_cv_sys_mounted_getmnt=yes,
fu_cv_sys_mounted_getmnt=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_getmnt)
if test $fu_cv_sys_mounted_getmnt = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNT)
fi
fi

if test -z "$list_mounted_fs"; then
# SVR2
AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab])
AC_CACHE_VAL(fu_cv_sys_mounted_fread,
[AC_TRY_CPP([#include <mnttab.h>],
fu_cv_sys_mounted_fread=yes,
fu_cv_sys_mounted_fread=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_fread)
if test $fu_cv_sys_mounted_fread = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD)
fi
fi

if test -z "$list_mounted_fs"; then
AC_MSG_ERROR([could not determine how to read list of mounted filesystems])
# FIXME -- no need to abort building the whole package
# Cannot build mountlist.c or anything that needs its functions
fi

AC_CHECKING(how to get filesystem space usage)
space=no

# Perform only the link test since it seems there are no variants of the
# statvfs function.  This check is more than just AC_CHECK_FUNCS(statvfs)
# because that got a false positive on SCO OSR5.  Adding the declaration
# of a `struct statvfs' causes this test to fail (as it should) on such
# systems.  That system is reported to work fine with STAT_STATFS4 which
# is what it gets when this test fails.
if test $space = no; then
# SVR4
AC_CACHE_CHECK([statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
[AC_TRY_LINK([#include <sys/types.h>
#include <sys/statvfs.h>],
[struct statvfs fsd; statvfs (0, &fsd);],
fu_cv_sys_stat_statvfs=yes,
fu_cv_sys_stat_statvfs=no)])
if test $fu_cv_sys_stat_statvfs = yes; then
space=yes
AC_DEFINE(STAT_STATVFS)
fi
fi

if test $space = no; then
# DEC Alpha running OSF/1
AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
[AC_TRY_RUN([
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
int main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
return (statfs (".", &fsd, sizeof (struct statfs)));
}],
fu_cv_sys_stat_statfs3_osf1=yes,
fu_cv_sys_stat_statfs3_osf1=no,
fu_cv_sys_stat_statfs3_osf1=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
space=yes
AC_DEFINE(STAT_STATFS3_OSF1)
fi
fi

if test $space = no; then
# AIX
AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
member (AIX, 4.3BSD)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
[AC_TRY_RUN([
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
int main ()
{
struct statfs fsd;
fsd.f_bsize = 0;
return (statfs (".", &fsd));
}],
fu_cv_sys_stat_statfs2_bsize=yes,
fu_cv_sys_stat_statfs2_bsize=no,
fu_cv_sys_stat_statfs2_bsize=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
if test $fu_cv_sys_stat_statfs2_bsize = yes; then