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#serial 2
dnl From Jim Meyering.
dnl
dnl This is not pretty. I've just taken the autoconf code and wrapped
dnl it in an AC_DEFUN.
dnl
dnl CAUTION: This is very fragile. It relies on several checks that
dnl are still in fileutils' configure.in:
dnl FIXME: add AC_REQUIRE uses to pull in all definitions required
dnl for all uses of $ac_cv_func_* and $ac_cv_header_* variables below.
dnl
AC_DEFUN(jm_LIST_MOUNTED_FILESYSTEMS,
[
# Determine how to get the list of mounted filesystems.
list_mounted_fs=
# If the getmntent function is available but not in the standard library,
# make sure LIBS contains -lsun (on Irix4) or -lseq (on PTX).
AC_FUNC_GETMNTENT
# This test must precede the ones for getmntent because Unicos-9 is
# reported to have the getmntent function, but its support is incompatible
# with other getmntent implementations.
# NOTE: Normally, I wouldn't use a check for system type as I've done for
# `CRAY' below since that goes against the whole autoconf philosophy. But
# I think there is too great a chance that some non-Cray system has a
# function named listmntent to risk the false positive.
if test -z "$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, 1,
[Define if there is a function named listmntent that can be used to
list all mounted filesystems. (UNICOS)])
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 $fu_cv_sys_mounted_getmntent1 = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT1, 1,
[Define if there is a function named getmntent for reading the list
of mounted filesystems, and that function takes a single argument.
(4.3BSD, SunOS, HP-UX, Dynix, Irix)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_getmntent2 = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT2, 1,
[Define if there is a function named getmntent for reading the list of
mounted filesystems, and that function takes two arguments. (SVR4)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_getsstat = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETFSSTAT, 1,
[Define if there is a function named getfsstat for reading the
list of mounted filesystems. (DEC Alpha running OSF/1)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_vmount = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_VMOUNT, 1,
[Define if there is a function named mntctl that can be used to read
the list of mounted filesystems, and there is a system header file
that declares \`struct vmount.' (AIX)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_fread_fstyp = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD_FSTYP, 1,
[Define if (like SVR2) there is no specific function for reading the
list of mounted filesystems, and your system has these header files:
<sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_getmntinfo = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTINFO, 1,
[Define if there is a function named getmntinfo for reading the
list of mounted filesystems. (4.4BSD)])
fi
fi
# FIXME: add a test for netbsd-1.1 here
if test -z "$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 $fu_cv_sys_mounted_getmnt = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNT, 1,
[Define if there is a function named getmnt for reading the list of
mounted filesystems. (Ultrix)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_fread = yes; then
list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD, 1,
[Define if there is no specific function for reading the list of
mounted filesystems. fread will be used to read /etc/mnttab. (SVR2) ])
fi
fi
if test -z "$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
# Can't build mountlist.c or anything that needs its functions
fi
])
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