/
configure.ac
4208 lines (3915 loc) · 85 KB
/
configure.ac
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dnl NTP top-level configure.ac -*- Autoconf -*-
dnl
m4_include([sntp/m4/version.m4])
AC_PREREQ([2.61])
AC_INIT(
[ntp],
[VERSION_NUMBER],
[http://bugs.ntp.org./],
[],
[http://www.ntp.org./]dnl
)
AC_CONFIG_MACRO_DIR([sntp/m4])
AC_CONFIG_AUX_DIR([sntp/libevent/build-aux])
AC_PRESERVE_HELP_ORDER
# Bump ntp_configure_cache_version for each change to configure.ac or
# .m4 files which invalidates cached values from previous configure
# runs.
#
# If the change affects cache variables used only by the main NTP
# configure.ac, then only its version number should be bumped, while
# the subdir configure.ac version numbers should be unchanged. The
# same is true for a test/variable that is used only by one subdir
# being changed incompatibly; only that subdir's cache version needs
# bumping.
#
# If a change affects variables shared by all NTP configure scripts,
# please bump the version numbers of each. If you are not sure, the
# safe choice is to bump all on any cache-invalidating change.
#
# In order to avoid the risk of version stamp collision between -stable
# and -dev branches, do not simply increment the version, instead use
# the date YYYYMMDD optionally with -HHMM if there is more than one
# bump in a day.
ntp_configure_cache_version=20120806
# When the cache version of config.cache and configure do not
# match, NTP_CACHEVERSION will flush the cache.
NTP_CACHEVERSION([main], [$ntp_configure_cache_version])
AM_INIT_AUTOMAKE([1.10 foreign -Wall -Wno-gnu])
dnl AM_SILENT_RULES req. automake 1.11. [yes] defaults V=0
m4_ifdef(
[AM_SILENT_RULES],
[AM_SILENT_RULES([yes])]
)
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
dnl the 'build' machine is where we run configure and compile
dnl the 'host' machine is where the resulting stuff runs.
AC_DEFINE_UNQUOTED([STR_SYSTEM], ["$host"],
[canonical system (cpu-vendor-os) of where we should run])
AM_CONFIG_HEADER([config.h])
dnl AC_ARG_PROGRAM
ntp_atom_ok=${ntp_atom_ok=no}
ntp_oncore_ok=${ntp_oncore_ok=no}
ntp_parse_ok=${ntp_parse_ok=no}
ntp_ripe_ncc_ok=${ntp_parse_ok=no}
ntp_jupiter_ok=${ntp_jupiter_ok=no}
NTP_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_YACC
AC_PROG_CC_C_O
NTP_VPATH_HACK dnl used only by ntpd/Makefile.am
NTP_LOCINFO([sntp]) dnl takes over from NTP_BINDIR, in NTP_LIBNTP
dnl AM_PROG_AR req. automake 1.12
m4_ifdef(
[AM_PROG_AR],
[AM_PROG_AR]
)
# So far, the only shared library we might use is libopts.
# It's a small library - we might as well use a static version of it.
AC_DISABLE_SHARED
AC_PROG_LIBTOOL
AC_SUBST([LIBTOOL_DEPS])
# NTP has (so far) been relying on leading-edge autogen.
# Therefore, by default:
# - use the version we ship with
# - do not install it
# - build a static copy (AC_DISABLE_SHARED - done earlier)
case "${enable_local_libopts+set}" in
set) ;;
*) enable_local_libopts=yes ;;
esac
case "${enable_libopts_install+set}" in
set) ;;
*) enable_libopts_install=no ;;
esac
LIBOPTS_CHECK_NOBUILD([sntp/libopts])
NTP_ENABLE_LOCAL_LIBEVENT
NTP_LIBNTP
AC_MSG_CHECKING([for deprecated --with-arlib])
AC_ARG_WITH([arlib],
AS_HELP_STRING([--with-arlib], [- deprecated, arlib not distributed]),
[ans=$withval], [ans=no])
AC_MSG_RESULT([$ans])
case "$ans" in
yes)
AC_MSG_WARN([Please do not use --with-arlib, arlib is no longer included. In the future, --with-arlib will not be recognized.])
;;
esac
dnl we need to check for cross compile tools for vxWorks here
AC_PROG_AWK
AS_UNSET([ac_cv_prog_AWK])
AC_SUBST([AWK]) dnl scripts/ntpver.in
AC_PROG_MAKE_SET
AC_SUBST([CFLAGS])
AC_SUBST([LDFLAGS])
AC_PROG_LN_S
AC_ISC_POSIX
AC_PATH_PROG([PATH_PERL], [perl])
dnl Saving cached hardcoded paths rather than searching $PATH during a
dnl cached configure run is an optimization not worth the the cost of
dnl preventing newly-installed tools from being found. Short-circuit
dnl the caching after the tests so preset overrides still work.
AS_UNSET([ac_cv_path_PATH_PERL])
AC_PATH_PROG([PATH_TEST], [test])
AS_UNSET([ac_cv_path_PATH_TEST])
test -z "$CONFIG_SHELL" && CONFIG_SHELL=/bin/sh
AC_SUBST([CONFIG_SHELL]) dnl for scripts #!/path/to/sh
AC_ARG_WITH(
[net-snmp-config],
[AS_HELP_STRING(
[--with-net-snmp-config],
[+ =net-snmp-config]
)],
[ans=$withval],
[ans=yes]
)
case "$ans" in
no)
;;
yes)
ans=net-snmp-config
;;
/*)
;;
*/*)
AC_MSG_ERROR([--with-net-snmp-config takes either a name or an absolute path])
;;
*)
;;
esac
PROG_NET_SNMP_CONFIG=$ans
AC_MSG_CHECKING([for net-snmp-config path])
case "$PROG_NET_SNMP_CONFIG" in
no) ;;
/*)
PATH_NET_SNMP_CONFIG=$PROG_NET_SNMP_CONFIG
;;
*)
AC_PATH_PROG([PATH_NET_SNMP_CONFIG], [$PROG_NET_SNMP_CONFIG])
AS_UNSET([ac_cv_path_PATH_NET_SNMP_CONFIG])
;;
esac
AC_MSG_RESULT([$PATH_NET_SNMP_CONFIG])
case "$host" in
*-*-vxworks*)
ac_link="$ac_link $VX_KERNEL"
;;
esac
# HMS: a check for -lnsl used to be here - now being done in NTP_LIBNTP
AC_SEARCH_LIBS([openlog], [gen syslog])
NTP_FACILITYNAMES
dnl Digital UNIX V4.0 and Solaris 7 have POSIX.1c functions in -lrt
dnl Solaris 2.6 only has -lposix4; in Solaris 7, this is a symlink to -lrt,
dnl so only use one of them. Linux (glibc-2.1.2 and -2.2.2, at least)
dnl does Strange Things with extra processes using the Posix-compatibility
dnl real-time library, so we don't want to use it.
dnl
dnl 081118 Harlan got tired of looking for a way to get the sched*()
dnl functions to link OK with either cc or gcc.
case "$host" in
*-*-*linux*) ;;
*-*-osf4*) ;;
*-*-osf5*) ;;
*)
# HMS: Make sure we check for -lrt for clock_* before this...
AC_CHECK_LIB([rt], [sched_setscheduler], [],
[AC_CHECK_LIB([posix4], [sched_setscheduler])])
;;
esac
AC_CHECK_HEADERS([bstring.h])
AC_CHECK_HEADER(
[dns_sd.h],
[AC_CHECK_LIB(
[dns_sd],
[DNSServiceRegister],
[AC_DEFINE([HAVE_DNSREGISTRATION], [1],
[Use Rendezvous/DNS-SD registration])]
)]
)
case "$ac_cv_lib_dns_sd_DNSServiceRegister" in
yes)
LIBS="-ldns_sd $LIBS"
esac
AC_CHECK_HEADERS([fcntl.h ieeefp.h inttypes.h kvm.h math.h])
AC_CHECK_HEADERS([memory.h netdb.h poll.h])
AC_CHECK_HEADERS([sgtty.h stdlib.h string.h termio.h])
AC_CHECK_HEADERS([termios.h timepps.h timex.h unistd.h])
case "$host" in
*-*-aix*)
AC_CHECK_HEADERS([utmpx.h])
case "$ac_cv_header_utmpx_h" in
yes)
;;
*)
AC_CHECK_HEADERS([utmp.h])
;;
esac
;;
*)
AC_CHECK_HEADERS([utmp.h utmpx.h])
;;
esac
#
# On Suns only (so far) getpass() truncates the typed password to 8
# characters, but getpassphrase() allows up to 257. Most systems'
# getpass() does not truncate, at least not so as to affect ntpq and
# ntpdc password prompts.
#
# So check for getpassphrase(), but only on Sun operating systems.
#
case "$host" in
*-*-sunos*|*-*-solaris*)
AC_CHECK_FUNCS([getpassphrase])
esac
AC_CHECK_HEADERS([net/if6.h])
AC_CHECK_HEADERS([net/route.h], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
])
AC_CHECK_HEADERS([netinfo/ni.h])
case "$ac_cv_header_netinfo_ni_h" in
yes)
AC_DEFINE([HAVE_NETINFO], [1], [NetInfo support?])
esac
AC_CHECK_HEADERS([sun/audioio.h sys/audioio.h sys/file.h])
case "$host" in
*-*-sunos4*)
;;
*)
AC_CHECK_HEADERS([sys/ioctl.h])
;;
esac
AC_CHECK_HEADERS([sys/ipc.h sys/lock.h sys/mman.h])
# HMS: Check sys/proc.h and sys/resource.h after some others
AC_CHECK_HEADERS([sys/modem.h sys/ppsclock.h sys/ppstime.h sched.h])
case "$ac_cv_header_sched_h" in
yes)
;;
*)
AC_CHECK_HEADERS([sys/sched.h])
;;
esac
# HMS: Check sys/shm.h after some others
AC_CHECK_HEADERS([sys/select.h sys/signal.h sys/sockio.h])
# HMS: Checked sys/socket.h earlier
case "$host" in
*-*-netbsd*)
;;
*)
AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h])
;;
esac
AC_CHECK_HEADERS([sys/stat.h sys/stream.h stropts.h sys/stropts.h sys/syssgi.h])
AC_CHECK_HEADERS([sys/systune.h sys/termios.h sys/tpro.h sys/wait.h])
case "$host" in
*-convex-*)
AC_CHECK_HEADERS([/sys/sync/queue.h /sys/sync/sema.h])
;;
*-*-bsdi*)
AC_CHECK_HEADERS([machine/inline.h sys/pcl720.h sys/i8253.h])
;;
esac
case "$host" in
*-*-solaris2.6)
# Broken...
;;
*)
AC_CHECK_FUNCS([ntp_adjtime ntp_gettime])
;;
esac
case "$host" in
*-*-*linux*)
case "$ac_cv_func_ntp_gettime" in
yes)
;;
*)
AC_CHECK_FUNCS([__ntp_gettime])
case "$ac_cv_func___ntp_gettime" in
yes)
AC_DEFINE([ntp_gettime], [__ntp_gettime], [deviant])
AC_DEFINE([HAVE_NTP_GETTIME], [1], [via __ntp_gettime])
esac
;;
esac
AC_CHECK_FUNCS([adjtimex])
case "$ac_cv_func_adjtimex" in
yes)
AC_DEFINE([ntp_adjtime], [adjtimex], [deviant])
AC_DEFINE([HAVE_NTP_ADJTIME], [1], [via adjtimex])
have_adjtimex=1
;;
*)
AC_CHECK_FUNCS([__adjtimex])
case "$ac_cv_func___adjtimex" in
yes)
AC_DEFINE([ntp_adjtime], [__adjtimex], [deviant])
AC_DEFINE([HAVE_NTP_ADJTIME], [1], [via __adjtimex])
AC_DEFINE([adjtimex], [__adjtimex], [deviant])
AC_DEFINE([HAVE_ADJTIMEX], [1], [via __adjtimex])
have_adjtimex=1
esac
;;
esac
esac
case "$have_adjtimex" in
'')
# nlist stuff is only needed for tickadj.
saved_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS([nlist], [elf ld mld])
AC_SEARCH_LIBS([kvm_open], [kvm]) dnl We already know about -lelf here...
AC_CHECK_HEADERS([nlist.h sys/var.h])
case "$ac_cv_header_nlist_h" in
yes)
AC_DEFINE([NLIST_STRUCT], [1], [nlist stuff])
AC_CACHE_CHECK(
[for n_un in struct nlist],
[ntp_cv_struct_nlist_n_un],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <nlist.h>
]],
[[
struct nlist n;
n.n_un.n_name = 0;
]]
)]
[ntp_cv_struct_nlist_n_un=yes],
[ntp_cv_struct_nlist_n_un=no]
)]
)
case "$ntp_cv_struct_nlist_n_un" in
yes)
AC_DEFINE([NLIST_NAME_UNION], [1],
[does struct nlist use a name union?])
esac
esac
AC_SUBST([LDADD_NLIST])
LDADD_NLIST="$LIBS"
LIBS="$saved_LIBS"
AS_UNSET([saved_LIBS])
esac
AC_CHECK_HEADERS([sys/proc.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
AC_CHECK_HEADERS([sys/resource.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
AC_CHECK_HEADERS([sys/shm.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_IPC_H
# include <sys/ipc.h>
#endif
])
AC_CHECK_HEADERS([sys/timex.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
AC_TYPE_SIGNAL
AC_TYPE_OFF_T
AC_STRUCT_TM dnl defines TM_IN_SYS_TIME used by refclock_parse.c
AC_CACHE_CHECK(
[for a fallback value for HZ],
[ntp_cv_default_hz],
[
ntp_cv_default_hz=100
case "$host" in
alpha*-dec-osf4*|alpha*-dec-osf5*)
ntp_cv_default_hz=1024
;;
mips-dec-ultrix4*)
ntp_cv_default_hz=256
;;
esac
]
)
AC_DEFINE_UNQUOTED([DEFAULT_HZ], [$ntp_cv_default_hz],
[What is the fallback value for HZ?])
AC_CACHE_CHECK(
[if we need to override the system's value for HZ],
[ntp_cv_override_hz],
[
ntp_cv_override_hz=no
case "$host" in
alpha*-dec-osf4*|alpha*-dec-osf5*)
ntp_cv_override_hz=yes
;;
mips-dec-ultrix4*)
ntp_cv_override_hz=yes
;;
*-*-freebsd*)
ntp_cv_override_hz=yes
;;
*-*-sunos4*)
ntp_cv_override_hz=yes
;;
*-*-kfreebsd*)
ntp_cv_override_hz=yes
;;
esac
]
)
case "$ntp_cv_override_hz" in
yes)
AC_DEFINE([OVERRIDE_HZ], [1],
[Do we need to override the system's idea of HZ?])
esac
dnl AC_CACHE_CHECK(ut_host in struct utmp, ac_cv_func_ut_host_in_utmp,
dnl [AC_TRY_LINK([#include <sys/types.h>
dnl #include <utmp.h>], [struct utmp ut; ut.ut_host;],
dnl ac_cv_func_ut_host_in_utmp=yes, ac_cv_func_ut_host_in_utmp=no)])
dnl if test $su_cv_func_ut_host_in_utmp = yes; then
dnl AC_DEFINE(HAVE_UT_HOST)
dnl fi
dnl AC_MSG_CHECKING(if we can get the system boot time)
dnl AC_CACHE_VAL(su_cv_have_boot_time,
dnl [AC_EGREP_CPP(yes,
dnl [#ifdef HAVE_UTMPX_H
dnl #include <utmpx.h>
dnl #else
dnl #include <utmp.h>
dnl #endif
dnl #ifdef BOOT_TIME
dnl yes
dnl #endif
dnl ], su_cv_have_boot_time=yes, su_cv_have_boot_time=no)])
dnl AC_MSG_RESULT($su_cv_have_boot_time)
AC_CACHE_CHECK(
[for struct rt_msghdr],
[ntp_cv_struct_rt_msghdr],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/route.h>
]],
[[
struct rt_msghdr p;
]]
)],
[ntp_cv_struct_rt_msghdr=yes],
[ntp_cv_struct_rt_msghdr=no]
)]
)
AC_CACHE_CHECK(
[for struct rtattr],
[ntp_cv_rtattr],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stddef.h>
#include <sys/socket.h>
#include <linux/rtnetlink.h>
]],
[[
struct rtattr p;
]]
)],
[ntp_cv_rtattr=yes],
[ntp_cv_rtattr=no]
)]
)
case "$ntp_cv_struct_rt_msghdr$ntp_cv_rtattr" in
*yes*)
AC_DEFINE([HAS_ROUTING_SOCKET], [1],
[Do we have a routing socket (rt_msghdr or rtattr)?])
case "$ntp_cv_rtattr" in
yes)
AC_DEFINE([HAVE_RTNETLINK], [1],
[Do we have Linux routing socket?])
esac
esac
AC_CACHE_CHECK(
[struct sigaction for sa_sigaction],
[ntp_cv_struct_sigaction_has_sa_sigaction],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <signal.h>
]],
[[
struct sigaction act;
act.sa_sigaction = 0;
]]
)],
[ntp_cv_struct_sigaction_has_sa_sigaction=yes],
[ntp_cv_struct_sigaction_has_sa_sigaction=no]
)]
)
case "$ntp_cv_struct_sigaction_has_sa_sigaction" in
yes)
AC_DEFINE([HAVE_SA_SIGACTION_IN_STRUCT_SIGACTION], [1], [Obvious])
esac
AC_CACHE_CHECK(
[for struct ppsclockev],
[ntp_cv_struct_ppsclockev],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_TERMIOS_H
# include <sys/termios.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_PPSCLOCK_H
# include <sys/ppsclock.h>
#endif
]],
[[
extern struct ppsclockev *pce;
return pce->serial;
]]
)],
[ntp_cv_struct_ppsclockev=yes],
[ntp_cv_struct_ppsclockev=no]
)]
)
case "$ntp_cv_struct_ppsclockev" in
yes)
AC_DEFINE([HAVE_STRUCT_PPSCLOCKEV], [1],
[Does a system header define struct ppsclockev?])
esac
case "$ac_cv_header_machine_soundcard_h$ac_cv_header_sys_soundcard_h" in
*yes*)
AC_CACHE_CHECK(
[for struct snd_size],
[ntp_cv_struct_snd_size],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_MACHINE_SOUNDCARD_H
# include <machine/soundcard.h>
#endif
#ifdef HAVE_SYS_SOUNDCARD_H
# include <sys/soundcard.h>
#endif
]],
[[
extern struct snd_size *ss;
return ss->rec_size;
]]
)],
[ntp_cv_struct_snd_size=yes],
[ntp_cv_struct_snd_size=no]
)]
)
case "$ntp_cv_struct_snd_size" in
yes)
AC_DEFINE([HAVE_STRUCT_SND_SIZE], [1],
[Do we have struct snd_size?])
esac
esac
AC_CACHE_CHECK(
[struct clockinfo for hz],
[ntp_cv_struct_clockinfo_has_hz],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/time.h>
]],
[[
extern struct clockinfo *pc;
return pc->hz;
]]
)],
[ntp_cv_struct_clockinfo_has_hz=yes],
[ntp_cv_struct_clockinfo_has_hz=no]
)]
)
case "$ntp_cv_struct_clockinfo_has_hz" in
yes)
AC_DEFINE([HAVE_HZ_IN_STRUCT_CLOCKINFO], [1], [Obvious])
esac
AC_CACHE_CHECK(
[struct clockinfo for tickadj],
[ntp_cv_struct_clockinfo_has_hz],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/time.h>
]],
[[
extern struct clockinfo *pc;
return pc->tickadj;
]]
)],
[ntp_cv_struct_clockinfo_has_hz=yes],
[ntp_cv_struct_clockinfo_has_hz=no]
)]
)
case "$ntp_cv_struct_clockinfo_has_hz" in
yes)
AC_DEFINE([HAVE_TICKADJ_IN_STRUCT_CLOCKINFO], [1], [Obvious])
esac
case "$ntp_cv_struct_ntptimeval" in
yes)
AC_CHECK_MEMBERS(
[struct ntptimeval.time.tv_nsec],
[],
[],
[
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#else
# ifdef HAVE_TIME_H
# include <time.h>
# endif
#endif
#ifdef HAVE_SYS_TIMEX_H
# include <sys/timex.h>
#else
# ifdef HAVE_TIMEX_H
# include <timex.h>
# endif
#endif
]
)
esac
####
saved_LIBS="$LIBS"
LIBS="$LIBS $LDADD_LIBNTP"
AC_CHECK_FUNCS([daemon])
LIBS="$saved_LIBS"
AS_UNSET([saved_LIBS])
AC_CHECK_FUNCS(
[finite],
[],
[AC_CHECK_FUNCS(
[isfinite],
[],
[
AC_MSG_CHECKING([for isfinite with <math.h>])
_libs=$LIBS
LIBS="$LIBS -lm"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <math.h>
]],
[[
float f = 0.0;
isfinite(f);
]]
)],
[ans=yes],
[ans=no]
)
LIBS=$_libs
AC_MSG_RESULT([$ans])
case "$ans" in
yes)
AC_DEFINE([HAVE_ISFINITE], [1])
esac
]
)]
)
AC_CHECK_FUNCS([getbootfile getuid getrusage nanosleep strsignal])
# kvm_open() is only used by tickadj. Also see above.
case "$ac_cv_header_kvm_h" in
yes)
AC_CHECK_FUNCS([kvm_open])
;;
esac
case "$host" in
*-*-sco3.2v5.0.*)
# Just stubs. Idiots.
;;
*) AC_CHECK_FUNCS([mkstemp])
;;
esac
AC_CHECK_FUNCS([mktime])
case "$host" in
*-*-aix[[456]]*)
# Just a stub. Idiots.
;;
*-*-irix[[45]]*)
# Just a stub in "old" Irix. Idiots.
;;
*-*-*linux*)
# there, but more trouble than it is worth for now (resolver problems)
;;
*-*-qnx*)
# Apparently there but not working in QNX. Idiots?
;;
*-*-sco3.2v5.0.*)
# Just a stub. Idiots.
;;
alpha*-dec-osf4*|alpha*-dec-osf5*)
# mlockall is there, as a #define calling memlk via <sys/mman.h>
# Not easy to test for - cheat.
AC_CHECK_FUNCS([memlk], [ac_cv_func_mlockall=yes])
AC_CHECK_FUNCS([mlockall])
;;
*) AC_CHECK_FUNCS([mlockall])
;;
esac
AC_CHECK_FUNCS([nice plock pututline pututxline readlink recvmsg rtprio])
case "$host" in
*-*-aix[[456]]*)
# Just a stub in AIX 4. Idiots.
;;
*-*-solaris2.5*)
# Just stubs in solaris2.5. Idiots.
;;
*) AC_CHECK_FUNCS([sched_setscheduler])
;;
esac
AC_CHECK_FUNCS([setlinebuf setpgid setpriority setsid setvbuf])
AC_CHECK_FUNCS([strdup strerror setrlimit strchr])
case "$host" in
*-*-aix[[456]]*)
# Just stubs. Idiots.
;;
*-*-netbsd1*)
# Just stubs. Idiots.
;;
*-*-netbsdelf1*)
# Just stubs. Idiots.
;;
*-*-openbsd*)
# Just stubs. Idiots.
;;
*)
AC_CHECK_FUNCS([timer_create])
;;
esac
# some OSes prefer _exit() in forked children to exit()
AC_CHECK_FUNCS([_exit])
ntp_worker_child_exit=exit
case "$ac_cv_func__exit::$host_os" in
yes::netbsd*)
ntp_worker_child_exit=_exit
;;
yes::openbsd*)
ntp_worker_child_exit=_exit
;;
esac
AC_DEFINE_UNQUOTED([WORKER_CHILD_EXIT], [$ntp_worker_child_exit],
[routine worker child proc uses to exit.])
AC_CHECK_FUNCS([umask uname updwtmp updwtmpx])
###
# http://bugs.ntp.org/737
case "$ac_cv_func_recvmsg" in
yes)
AC_CACHE_CHECK(
[if we need extra help to define struct iovec],
[ntp_cv_struct_iovec_help],
[
compiled=no
for ntp_cv_struct_iovec_help in '0' '1'; do
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#if $ntp_cv_struct_iovec_help
# include <sys/uio.h>
#endif
]],
[[
void foo(void) {
ssize_t x;
int s = 0;
struct iovec iov;
struct msghdr mh;
int flags = 0;
mh.msg_iov = &iov;
x = recvmsg(s, &mh, flags);
}
]]
)],
[compiled=yes ; break 1],
[]
)
done
case "$compiled" in
no)
ntp_cv_struct_iovec_help=0
esac
AS_UNSET([compiled])
]
)
case "$ntp_cv_struct_iovec_help" in
1)
AC_DEFINE([HAVE_SYS_UIO_H], [1],
[Use sys/uio.h for struct iovec help])
esac
esac
AC_CACHE_CHECK(
[number of arguments taken by setpgrp()],
[ntp_cv_func_setpgrp_nargs],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
]],
[[
setpgrp(0, 0);
]]
)],
[ntp_cv_func_setpgrp_nargs=2],
[ntp_cv_func_setpgrp_nargs=0]
)]
)
case "$ntp_cv_func_setpgrp_nargs" in
0)
AC_DEFINE([HAVE_SETPGRP_0], [1],
[define if setpgrp takes 0 arguments])
esac
AC_CACHE_CHECK(
[if we need to declare 'errno'],
[ntp_cv_decl_errno],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif
]],
[[
errno = 0;
]]
)],
[ntp_cv_decl_errno=no],
[ntp_cv_decl_errno=yes]
)]
)
case "$ntp_cv_decl_errno" in
yes)
AC_DEFINE([DECL_ERRNO], [1], [Declare errno?])
esac
dnl (prr) aix 4.3 defines h_errno as (*(int *)h_errno_which()) for
dnl MT purposes. This makes the line "extern int h_errno" choke
dnl the compiler. Hopefully adding !defined(h_errno) fixes this
dnl without breaking any other platforms.
dnl
AC_CACHE_CHECK(
[if we may declare 'h_errno'],
[ntp_cv_decl_h_errno],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
]],
[[
extern int h_errno;
]]
)],
[ntp_cv_decl_h_errno=yes],
[ntp_cv_decl_h_errno=no]
)]
)
case "$ntp_cv_decl_h_errno" in
yes)
AC_DEFINE([DECL_H_ERRNO], [1], [Declare h_errno?])
esac
AC_CACHE_CHECK(
[if declaring 'syscall()' is ok],
[ntp_cv_decl_syscall],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
]],
[[
extern int syscall (int, ...);
]]
)]
[ntp_cv_decl_syscall=yes],
[ntp_cv_decl_syscall=no]
)]
)
case "$ntp_cv_decl_syscall" in
yes)