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configure.ac
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dnl NTP top-level configure.ac -*- Autoconf -*-
dnl
m4_include([sntp/m4/version.m4])
AC_PREREQ([2.68])
AC_INIT(
[ntp],
[VERSION_NUMBER],
[https://bugs.ntp.org/],
[],
[https://www.ntp.org/]dnl
)
AC_CONFIG_MACRO_DIR([sntp/m4])
AC_CONFIG_AUX_DIR([sntp/libevent/build-aux])
AC_LANG([C])
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=20240218
# When the cache version of config.cache and configure do not
# match, NTP_CACHEVERSION will flush the cache.
NTP_CACHEVERSION([main], [$ntp_configure_cache_version])
AM_INIT_AUTOMAKE([1.15 foreign subdir-objects -Wall -Wno-gnu])
AM_SILENT_RULES([yes])
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
dnl the 'build' machine is where we run configure and compile
dnl the 'host' machine is where the resulting stuff runs.
AC_DEFINE_UNQUOTED([STR_SYSTEM], ["$host"],
[canonical system (cpu-vendor-os) of where we should run])
AC_CONFIG_HEADERS([config.h])
dnl AC_ARG_PROGRAM
AC_MSG_CHECKING([if we should enable build framework help])
AC_ARG_ENABLE(
[build-framework-help],
[AS_HELP_STRING(
[--enable-build-framework-help],
[+ enable build framework help]
)],
[ntp_ok=$enableval],
[ntp_ok=yes]
)
case "$ntp_ok" in
yes)
ntp_cv_build_framework_help=yes ;;
*) ntp_cv_build_framework_help=no ;;
esac
AC_MSG_RESULT([$ntp_ok])
ntp_atom_ok=${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
NTP_COMPILER
AC_PROG_YACC
dnl AC_PROG_CC_C_O # called by NTP_COMPILER
AX_C99_STRUCT_INIT
NTP_HARDEN([sntp])
NTP_VPATH_HACK dnl used by ntpd/Makefile.am libparse/Makefile.am
NTP_LOCINFO([sntp]) dnl takes over from NTP_BINDIR, in NTP_LIBNTP
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.
LT_INIT([disable-shared])
AC_SUBST([LIBTOOL_DEPS])
# NTP has (so far) been relying on leading-edge autogen, which
# means we need the appropriate corresponding libopts as well.
# Therefore, by default:
# - use the version of libopts we ship with
# - do not install it
# - build a static copy (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
enable_nls=no
LIBOPTS_CHECK_NOBUILD([sntp/libopts])
NTP_LIBEVENT_CHECK_NOBUILD([2], [sntp/libevent])
NTP_LIBNTP
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_PROG_LN_S
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=$ans
case "$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_CHECKING([for net-snmp-config path])
AC_MSG_RESULT([$PATH_NET_SNMP_CONFIG])
case "$PATH_NET_SNMP_CONFIG" in
/*) AC_CACHE_CHECK(
[for net-snmp version],
[ntp_cv_net_snmp_version],
[ntp_cv_net_snmp_version=`$PATH_NET_SNMP_CONFIG --version`]
)
;;
esac
case "$host" in
*-*-vxworks*)
ac_link="$ac_link $VX_KERNEL"
;;
esac
# HMS: a check for -lnsl used to be here - now being done in NTP_LIBNTP
AC_SEARCH_LIBS([openlog], [gen syslog])
# XXX library list will be in ac_cv_search_openlog
# LIBSECCOMP is off by default -- needs testing with all the features
# Please send bug reports to loganaden@gmail.com
AC_MSG_CHECKING([if we want to use libseccomp sandboxing (EXPERIMENTAL)])
AC_ARG_ENABLE(
[libseccomp],
[AS_HELP_STRING(
[--enable-libseccomp],
[EXPERIMENTAL: enable support for libseccomp sandboxing (default is no) ]
)],
[ntp_ok=$enableval],
[ntp_ok=no]
)
AC_MSG_RESULT([$ntp_ok])
case "$ntp_ok" in
yes)
AC_SEARCH_LIBS(
[seccomp_init],
[seccomp],
[AC_DEFINE([LIBSECCOMP], [1],
[Define to any value to include libseccomp sandboxing.])]
)
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/prctl.h>
#include <linux/seccomp.h>
int main(void)
{
int ret;
ret = prctl(PR_GET_SECCOMP, 0, 0, 0, 0);
if (ret < 0) {
switch (errno) {
case ENOSYS:
return 1;
case EINVAL:
return 1;
default:
return 1;
}
}
ret =
prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, NULL, 0, 0);
if (ret < 0) {
switch (errno) {
case EINVAL:
return 1;
case EFAULT:
return 0;
default:
return 1;
}
}
return 1;
}
]
, AC_DEFINE([KERN_SECCOMP], 1,
[Define to use libseccomp system call filtering.])
, []
)
;;
esac
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 "$host" in
*-*-*linux*) ;;
*-*-osf4*) ;;
*-*-osf5*) ;;
*)
# HMS: Make sure we check for -lrt for clock_* before this...
case "$ac_cv_search_clock_gettime" in
'') AC_MSG_FAILURE([Internal Error: Haven't looked for clock_gettime() yet!]) ;;
esac
AC_SEARCH_LIBS([sched_setscheduler], [rt posix4])
;;
esac
AC_CHECK_HEADERS([bstring.h sys/procctl.h])
AC_CHECK_HEADER(
[dns_sd.h],
[AC_SEARCH_LIBS(
[DNSServiceRegister],
[dns_sd],
[AC_DEFINE([HAVE_DNSREGISTRATION], [1],
[Use Rendezvous/DNS-SD registration])]
)]
)
AC_CHECK_HEADERS([fcntl.h fnmatch.h ieeefp.h inttypes.h kvm.h math.h])
AC_CHECK_HEADERS([memory.h netdb.h poll.h])
AC_CHECK_HEADERS([sgtty.h stdatomic.h])
AC_HEADER_STDBOOL
AC_CHECK_HEADERS([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 "$host" in
*-*-netbsd*)
;;
*)
AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h])
;;
esac
AC_CHECK_HEADERS([sys/stat.h sys/stream.h stropts.h sys/stropts.h sys/syssgi.h])
AC_CHECK_HEADERS([sys/systune.h sys/termios.h sys/tpro.h sys/wait.h])
AC_CHECK_FUNCS([waitpid])
case "$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 "$ac_cv_header_stdatomic_h" in
yes)
AC_CHECK_FUNCS([atomic_thread_fence])
AC_CACHE_CHECK(
[for atomic_thread_fence()],
[ntp_cv_func_atomic_thread_fence],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stdatomic.h>
]],
[[
atomic_thread_fence(memory_order_seq_cst);
]]
)],
[ntp_cv_func_atomic_thread_fence=yes],
[ntp_cv_func_atomic_thread_fence=no]
)]
)
;;
esac
case "$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="$LIBS"
LIBS=
AC_SEARCH_LIBS([nlist], [elf ld mld])
# XXX ac_cv_search_nlist will be 'none required', 'no', or '-l...'
AC_SEARCH_LIBS([kvm_open], [kvm]) dnl We already know about -lelf here...
# XXX ac_cv_search_kvm_open will be 'none required', 'no', or '-l...'
AC_CHECK_HEADERS([nlist.h sys/var.h])
case "$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="$saved_LIBS"
AS_UNSET([saved_LIBS])
esac
AC_CHECK_HEADERS([sys/proc.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
AC_CHECK_HEADERS([sys/resource.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
AC_CHECK_HEADERS([sys/shm.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_IPC_H
# include <sys/ipc.h>
#endif
])
AC_CHECK_HEADERS([sys/timex.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
NTP_AF_UNSPEC
AC_TYPE_SIGNAL
AC_TYPE_OFF_T
AC_STRUCT_TM dnl defines TM_IN_SYS_TIME used by refclock_parse.c
AC_CACHE_CHECK(
[for a fallback value for HZ],
[ntp_cv_default_hz],
[
ntp_cv_default_hz=100
case "$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 "$ntp_cv_struct_ntptimeval" in
yes)
AC_CHECK_MEMBERS(
[struct ntptimeval.time.tv_nsec],
[],
[],
[
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#else
# ifdef HAVE_TIME_H
# include <time.h>
# endif
#endif
#ifdef HAVE_SYS_TIMEX_H
# include <sys/timex.h>
#else
# ifdef HAVE_TIMEX_H
# include <timex.h>
# endif
#endif
]
)
esac
####
AC_CHECK_FUNCS([arc4random_buf])
####
saved_LIBS="$LIBS"
LIBS="$LIBS $LDADD_LIBNTP"
AC_CHECK_FUNCS([daemon])
# XXX if we keep everything in LIBS and also keep separate lists, this simplifies.
LIBS="$saved_LIBS"
AS_UNSET([saved_LIBS])
AC_CHECK_FUNCS(
[finite],
[],
[AC_CHECK_FUNCS(
[isfinite],
[],
[
AC_MSG_CHECKING([for isfinite with <math.h>])
_libs=$LIBS
# XXX
LIBS="$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 "$ans" in
yes)
AC_DEFINE([HAVE_ISFINITE], [1])
esac
]
)]
)
AC_CHECK_FUNCS([fnmatch getbootfile getuid getrusage nanosleep strsignal ]dnl
[strsignal closefrom getdtablesize])
# kvm_open() is only used by tickadj. Also see above.
case "$ac_cv_header_kvm_h" in
yes)
AC_CHECK_FUNCS([kvm_open])
;;
esac
case "$host" in
*-*-sco3.2v5.0.*)
# Just stubs. Sigh.
;;
*) AC_CHECK_FUNCS([mkstemp])
;;
esac
AC_CHECK_FUNCS([mktime])
case "$host" in
*-*-aix[[4-9]]*)
# XXX only verified thru AIX6.
# Just a stub. Sigh.
;;
*-*-irix[[45]]*)
# Just a stub in "old" Irix. Sigh.
;;
# In the belief that the fix for bug 1223 fixes mlockall() under linux...
# *-*-*linux*)
# # there, but more trouble than it is worth for now (resolver problems)
# ;;
*-*-qnx*)
# Apparently there but not working in QNX. Sigh?
;;
*-*-sco3.2v5.0.*)
# Just a stub. Sigh.
;;
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 rtprio])
NTP_FUNC_REALPATH
case "$host" in
*-*-aix[[4-9]]*)
# XXX only verified thru AIX6.
# Just a stub in AIX 4. Sigh.
;;
*-*-solaris2.5*)
# Just stubs in solaris2.5. Sigh.
;;
*) AC_CHECK_FUNCS([sched_setscheduler])
;;
esac
AC_CHECK_FUNCS([setlinebuf setpgid setpriority setsid setvbuf])
AC_CHECK_FUNCS([strdup strnlen memchr strerror setrlimit strchr])
case "$host" in
*-*-aix[[4-9]]*)
# XXX only verified thru AIX6.
# Just stubs. Sigh.
;;
*-*-netbsd1*)
# Just stubs. Sigh.
;;
*-*-netbsdelf1*)
# Just stubs. Sigh.
;;
*-*-openbsd*)
# Just stubs. Sigh.
;;
*)
AC_CHECK_FUNCS([timer_create])
;;
esac
NTP_RLIMIT_ITEMS
# 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],