282 lines
6.6 KiB
Plaintext
Executable File
282 lines
6.6 KiB
Plaintext
Executable File
dnl
|
|
dnl This file contains macros used in configure.ac.
|
|
dnl automake uses this file to generate aclocal.m4, which is used by autoconf.
|
|
dnl
|
|
|
|
dnl ### A macro to find the include directory, useful for cross-compiling.
|
|
AC_DEFUN([AC_INCLUDEDIR],
|
|
[AC_REQUIRE([AC_PROG_AWK])dnl
|
|
AC_SUBST(includedir)
|
|
AC_MSG_CHECKING(for primary include directory)
|
|
includedir=/usr/include
|
|
if test -n "$GCC"
|
|
then
|
|
>conftest.c
|
|
new_includedir=`
|
|
$CC -v -E conftest.c 2>&1 | $AWK '
|
|
/^End of search list/ { print last; exit }
|
|
{ last = [$]1 }
|
|
'
|
|
`
|
|
rm -f conftest.c
|
|
if test -n "$new_includedir" && test -d "$new_includedir"
|
|
then
|
|
includedir=$new_includedir
|
|
fi
|
|
fi
|
|
AC_MSG_RESULT($includedir)
|
|
])
|
|
|
|
dnl ### A macro to set gcc warning flags.
|
|
define(AC_WARNFLAGS,
|
|
[AC_SUBST(WARNFLAGS)
|
|
if test -z "$WARNFLAGS"
|
|
then
|
|
if test -n "$GCC"
|
|
then
|
|
# If we're using gcc we want warning flags.
|
|
WARNFLAGS=-Wall
|
|
fi
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine if we have a "MP" type procfs
|
|
AC_DEFUN([AC_MP_PROCFS],
|
|
[AC_MSG_CHECKING(for MP procfs)
|
|
AC_CACHE_VAL(ac_cv_mp_procfs,
|
|
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <sys/procfs.h>
|
|
|
|
main()
|
|
{
|
|
int pid;
|
|
char proc[32];
|
|
FILE *ctl;
|
|
FILE *status;
|
|
int cmd;
|
|
struct pstatus pstatus;
|
|
|
|
if ((pid = fork()) == 0) {
|
|
pause();
|
|
exit(0);
|
|
}
|
|
sprintf(proc, "/proc/%d/ctl", pid);
|
|
if ((ctl = fopen(proc, "w")) == NULL)
|
|
goto fail;
|
|
sprintf(proc, "/proc/%d/status", pid);
|
|
if ((status = fopen (proc, "r")) == NULL)
|
|
goto fail;
|
|
cmd = PCSTOP;
|
|
if (write (fileno (ctl), &cmd, sizeof cmd) < 0)
|
|
goto fail;
|
|
if (read (fileno (status), &pstatus, sizeof pstatus) < 0)
|
|
goto fail;
|
|
kill(pid, SIGKILL);
|
|
exit(0);
|
|
fail:
|
|
kill(pid, SIGKILL);
|
|
exit(1);
|
|
}
|
|
]])],[ac_cv_mp_procfs=yes],[ac_cv_mp_procfs=no],[
|
|
# Guess or punt.
|
|
case "$host_os" in
|
|
svr4.2*|svr5*)
|
|
ac_cv_mp_procfs=yes
|
|
;;
|
|
*)
|
|
ac_cv_mp_procfs=no
|
|
;;
|
|
esac
|
|
])])
|
|
AC_MSG_RESULT($ac_cv_mp_procfs)
|
|
if test "$ac_cv_mp_procfs" = yes
|
|
then
|
|
AC_DEFINE([HAVE_MP_PROCFS], 1,
|
|
[Define if you have a SVR4 MP type procfs.
|
|
I.E. /dev/xxx/ctl, /dev/xxx/status.
|
|
Also implies that you have the pr_lwp member in prstatus.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine if procfs is pollable.
|
|
AC_DEFUN([AC_POLLABLE_PROCFS],
|
|
[AC_MSG_CHECKING(for pollable procfs)
|
|
AC_CACHE_VAL(ac_cv_pollable_procfs,
|
|
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <sys/procfs.h>
|
|
#include <sys/stropts.h>
|
|
#include <poll.h>
|
|
|
|
#ifdef HAVE_MP_PROCFS
|
|
#define PIOCSTOP PCSTOP
|
|
#define POLLWANT POLLWRNORM
|
|
#define PROC "/proc/%d/ctl"
|
|
#define PROC_MODE "w"
|
|
int IOCTL (int fd, int cmd, int arg) {
|
|
return write (fd, &cmd, sizeof cmd);
|
|
}
|
|
#else
|
|
#define POLLWANT POLLPRI
|
|
#define PROC "/proc/%d"
|
|
#define PROC_MODE "r+"
|
|
#define IOCTL ioctl
|
|
#endif
|
|
|
|
main()
|
|
{
|
|
int pid;
|
|
char proc[32];
|
|
FILE *pfp;
|
|
struct pollfd pfd;
|
|
|
|
if ((pid = fork()) == 0) {
|
|
pause();
|
|
exit(0);
|
|
}
|
|
sprintf(proc, PROC, pid);
|
|
if ((pfp = fopen(proc, PROC_MODE)) == NULL)
|
|
goto fail;
|
|
if (IOCTL(fileno(pfp), PIOCSTOP, NULL) < 0)
|
|
goto fail;
|
|
pfd.fd = fileno(pfp);
|
|
pfd.events = POLLWANT;
|
|
if (poll(&pfd, 1, 0) < 0)
|
|
goto fail;
|
|
if (!(pfd.revents & POLLWANT))
|
|
goto fail;
|
|
kill(pid, SIGKILL);
|
|
exit(0);
|
|
fail:
|
|
kill(pid, SIGKILL);
|
|
exit(1);
|
|
}
|
|
]])],[ac_cv_pollable_procfs=yes],[ac_cv_pollable_procfs=no],[
|
|
# Guess or punt.
|
|
case "$host_os" in
|
|
solaris2*|irix5*|svr4.2uw*|svr5*)
|
|
ac_cv_pollable_procfs=yes
|
|
;;
|
|
*)
|
|
ac_cv_pollable_procfs=no
|
|
;;
|
|
esac
|
|
])])
|
|
AC_MSG_RESULT($ac_cv_pollable_procfs)
|
|
if test "$ac_cv_pollable_procfs" = yes
|
|
then
|
|
AC_DEFINE([HAVE_POLLABLE_PROCFS], 1,
|
|
[Define if you have SVR4 and the poll system call works on /proc files.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine if the prstatus structure has a pr_syscall member.
|
|
AC_DEFUN([AC_STRUCT_PR_SYSCALL],
|
|
[AC_MSG_CHECKING(for pr_syscall in struct prstatus)
|
|
AC_CACHE_VAL(ac_cv_struct_pr_syscall,
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/procfs.h>]], [[#ifdef HAVE_MP_PROCFS
|
|
pstatus_t s;
|
|
s.pr_lwp.pr_syscall
|
|
#else
|
|
prstatus_t s;
|
|
s.pr_syscall
|
|
#endif]])],[ac_cv_struct_pr_syscall=yes],[ac_cv_struct_pr_syscall=no])])
|
|
AC_MSG_RESULT($ac_cv_struct_pr_syscall)
|
|
if test "$ac_cv_struct_pr_syscall" = yes
|
|
then
|
|
AC_DEFINE([HAVE_PR_SYSCALL], 1,
|
|
[Define if the prstatus structure in sys/procfs.h has a pr_syscall member.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine whether stat64 is defined.
|
|
AC_DEFUN([AC_STAT64],
|
|
[AC_MSG_CHECKING(for stat64 in (asm|sys)/stat.h)
|
|
AC_CACHE_VAL(ac_cv_type_stat64,
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef LINUX
|
|
#include <linux/types.h>
|
|
#include <asm/stat.h>
|
|
#else
|
|
#include <sys/stat.h>
|
|
#endif]], [[struct stat64 st;]])],[ac_cv_type_stat64=yes],[ac_cv_type_stat64=no])])
|
|
AC_MSG_RESULT($ac_cv_type_stat64)
|
|
if test "$ac_cv_type_stat64" = yes
|
|
then
|
|
AC_DEFINE([HAVE_STAT64], 1,
|
|
[Define if stat64 is available in asm/stat.h.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine if off_t is a long long
|
|
AC_DEFUN([AC_OFF_T_IS_LONG_LONG],
|
|
[AC_MSG_CHECKING(for long long off_t)
|
|
AC_CACHE_VAL(ac_cv_have_long_long_off_t,
|
|
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
|
|
main () {
|
|
if (sizeof (off_t) == sizeof (long long) &&
|
|
sizeof (off_t) > sizeof (long))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
]])],[ac_cv_have_long_long_off_t=yes],[ac_cv_have_long_long_off_t=no],[# Should try to guess here
|
|
ac_cv_have_long_long_off_t=no
|
|
])])
|
|
AC_MSG_RESULT($ac_cv_have_long_long_off_t)
|
|
if test "$ac_cv_have_long_long_off_t" = yes
|
|
then
|
|
AC_DEFINE([HAVE_LONG_LONG_OFF_T], 1, [Define if off_t is a long long.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine if rlim_t is a long long
|
|
AC_DEFUN([AC_RLIM_T_IS_LONG_LONG],
|
|
[AC_MSG_CHECKING(for long long rlim_t)
|
|
AC_CACHE_VAL(ac_cv_have_long_long_rlim_t,
|
|
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
main () {
|
|
if (sizeof (rlim_t) == sizeof (long long) &&
|
|
sizeof (rlim_t) > sizeof (long))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
]])],[ac_cv_have_long_long_rlim_t=yes],[ac_cv_have_long_long_rlim_t=no],[# Should try to guess here
|
|
ac_cv_have_long_long_rlim_t=no
|
|
])])
|
|
AC_MSG_RESULT($ac_cv_have_long_long_rlim_t)
|
|
if test "$ac_cv_have_long_long_rlim_t" = yes
|
|
then
|
|
AC_DEFINE([HAVE_LONG_LONG_RLIM_T], 1, [Define if rlim_t is a long long.])
|
|
fi
|
|
])
|
|
|
|
dnl ### A macro to determine endianness of long long
|
|
AC_DEFUN([AC_LITTLE_ENDIAN_LONG_LONG],
|
|
[AC_MSG_CHECKING(for little endian long long)
|
|
AC_CACHE_VAL(ac_cv_have_little_endian_long_long,
|
|
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
|
int main () {
|
|
union {
|
|
long long ll;
|
|
long l [2];
|
|
} u;
|
|
u.ll = 0x12345678;
|
|
if (u.l[0] == 0x12345678)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
]])],[ac_cv_have_little_endian_long_long=yes],[ac_cv_have_little_endian_long_long=no],[# Should try to guess here
|
|
ac_cv_have_little_endian_long_long=no
|
|
])])
|
|
AC_MSG_RESULT($ac_cv_have_little_endian_long_long)
|
|
if test "$ac_cv_have_little_endian_long_long" = yes
|
|
then
|
|
AC_DEFINE([HAVE_LITTLE_ENDIAN_LONG_LONG], 1,
|
|
[Define if long long is little-endian.])
|
|
fi
|
|
])
|