Re: bug report

[Akim Demaille]

Please, report this to the package maintainers, as it's a configure.ac
problem.  The Autoconf 2.57 doc says:

      Previous versions of Autoconf merely checked whether the header was
   accepted by the preprocessor.  This was changed because the old test was
   inappropriate for typical uses.  Headers are typically used to compile,
   not merely to preprocess, and the old behavior sometimes accepted
   headers that clashed at compile-time.  If you need to check whether a
   header is preprocessable, you can use `AC_PREPROC_IFELSE' (*note
   Running the Preprocessor::).
   
      This scheme, which improves the robustness of the test, also requires
   that you make sure that headers that must be included before the
   HEADER-FILE be part of the INCLUDES, (*note Default Includes::).  If
   looking for `bar.h', which requires that `foo.h' be included before if
   it exists, we suggest the following scheme:
   
   
   AC_CHECK_HEADERS([foo.h])
   AC_CHECK_HEADERS([bar.h], [], [],
   [#if HAVE_FOO_H
   # include <foo.h>
   # endif
   ])

Thanks!

| freebsd# pwd
| /ntp/ntp-4.1.73
| freebsd# ./configure
| checking build system type... i386-unknown-freebsd4.6
| checking host system type... i386-unknown-freebsd4.6
| checking target system type... i386-unknown-freebsd4.6
| checking for a BSD-compatible install... /usr/bin/install -c
| checking whether build environment is sane... yes
| checking for gawk... no
| checking for mawk... no
| checking for nawk... nawk
| checking whether make sets $(MAKE)... yes
| checking for style of include used by make... GNU
| checking for gcc... gcc
| checking for C compiler default output... a.out
| checking whether the C compiler works... yes
| checking whether we are cross compiling... no
| checking for suffix of executables...
| checking for suffix of object files... o
| checking whether we are using the GNU C compiler... yes
| checking whether gcc accepts -g... yes
| checking for gcc option to accept ANSI C... none needed
| checking dependency style of gcc... gcc
| checking how to run the C preprocessor... gcc -E
| checking for egrep... grep -E
| checking for AIX... no
| checking for ANSI C header files... yes
| checking for sys/types.h... yes
| checking for sys/stat.h... yes
| checking for stdlib.h... yes
| checking for string.h... yes
| checking for memory.h... yes
| checking for strings.h... yes
| checking for inttypes.h... yes
| checking for stdint.h... no
| checking for unistd.h... yes
| checking minix/config.h usability... no
| checking minix/config.h presence... no
| checking for minix/config.h... no
| checking for gcc... (cached) gcc
| checking whether we are using the GNU C compiler... (cached) yes
| checking whether gcc accepts -g... (cached) yes
| checking for gcc option to accept ANSI C... (cached) none needed
| checking dependency style of gcc... (cached) gcc
| checking how to run the C preprocessor... gcc -E
| checking if we should use /dev/clockctl... no
| checking sys/clockctl.h usability... no
| checking sys/clockctl.h presence... no
| checking for sys/clockctl.h... no
| checking for gawk... (cached) nawk
| checking whether make sets $(MAKE)... (cached) yes
| checking whether gcc -pipe works... yes
| checking whether ln -s works... yes
| checking whether gcc needs -traditional... no
| checking for working volatile... yes
| checking for library containing strerror... none required
| checking for ranlib... ranlib
| checking for sh... /bin/sh
| checking for perl... /usr/bin/perl
| checking for a BSD-compatible install... /usr/bin/install -c
| checking for nlist in -lelf... no
| checking for main in -lkvm... yes
| checking for nlist in -lld... no
| checking for nlist in -lmld... no
| checking for gethostent... yes
| checking for openlog... yes
| checking readline/history.h usability... yes
| checking readline/history.h presence... yes
| checking for readline/history.h... yes
| checking readline/readline.h usability... yes
| checking readline/readline.h presence... yes
| checking for readline/readline.h... yes
| checking for readline in -lreadline... yes
| checking for sched_setscheduler in -lrt... no
| checking for sched_setscheduler in -lposix4... no
| checking for setsockopt... yes
| checking for ANSI C header files... (cached) yes
| checking bstring.h usability... no
| checking bstring.h presence... no
| checking for bstring.h... no
| checking errno.h usability... yes
| checking errno.h presence... yes
| checking for errno.h... yes
| checking fcntl.h usability... yes
| checking fcntl.h presence... yes
| checking for fcntl.h... yes
| checking ieeefp.h usability... yes
| checking ieeefp.h presence... yes
| checking for ieeefp.h... yes
| checking math.h usability... yes
| checking math.h presence... yes
| checking for math.h... yes
| checking for memory.h... (cached) yes
| checking netdb.h usability... yes
| checking netdb.h presence... yes
| checking for netdb.h... yes
| checking poll.h usability... yes
| checking poll.h presence... yes
| checking for poll.h... yes
| checking sched.h usability... yes
| checking sched.h presence... yes
| checking for sched.h... yes
| checking sgtty.h usability... yes
| checking sgtty.h presence... yes
| checking for sgtty.h... yes
| checking for stdlib.h... (cached) yes
| checking for string.h... (cached) yes
| checking termio.h usability... no
| checking termio.h presence... no
| checking for termio.h... no
| checking termios.h usability... yes
| checking termios.h presence... yes
| checking for termios.h... yes
| checking timepps.h usability... no
| checking timepps.h presence... no
| checking for timepps.h... no
| checking timex.h usability... no
| checking timex.h presence... no
| checking for timex.h... no
| checking for unistd.h... (cached) yes
| checking utmp.h usability... yes
| checking utmp.h presence... yes
| checking for utmp.h... yes
| checking utmpx.h usability... no
| checking utmpx.h presence... no
| checking for utmpx.h... no
| checking arpa/nameser.h usability... yes
| checking arpa/nameser.h presence... yes
| checking for arpa/nameser.h... yes
| checking net/if.h usability... no
| checking net/if.h presence... yes
| configure: WARNING: net/if.h: present but cannot be compiled
| configure: WARNING: net/if.h: check for missing prerequisite headers?
| configure: WARNING: net/if.h: proceeding with the preprocessor's result
| configure: WARNING:     ## ------------------------------------ ##
| configure: WARNING:     ## Report this to address@hidden ##
| configure: WARNING:     ## ------------------------------------ ##
| checking for net/if.h... yes
| checking netinet/in_system.h usability... no
| checking netinet/in_system.h presence... no
| checking for netinet/in_system.h... no
| checking netinet/in_systm.h usability... yes
| checking netinet/in_systm.h presence... yes
| checking for netinet/in_systm.h... yes
| checking netinet/in.h usability... yes
| checking netinet/in.h presence... yes
| checking for netinet/in.h... yes
| checking netinet/ip.h usability... no
| checking netinet/ip.h presence... yes
| configure: WARNING: netinet/ip.h: present but cannot be compiled
| configure: WARNING: netinet/ip.h: check for missing prerequisite headers?
| configure: WARNING: netinet/ip.h: proceeding with the preprocessor's
| result
| configure: WARNING:     ## ------------------------------------ ##
| configure: WARNING:     ## Report this to address@hidden ##
| configure: WARNING:     ## ------------------------------------ ##
| checking for netinet/ip.h... yes
| checking netinfo/ni.h usability... no
| checking netinfo/ni.h presence... no
| checking for netinfo/ni.h... no
| checking sun/audioio.h usability... no
| checking sun/audioio.h presence... no
| checking for sun/audioio.h... no
| checking sys/audioio.h usability... no
| checking sys/audioio.h presence... no
| checking for sys/audioio.h... no
| checking sys/clkdefs.h usability... no
| checking sys/clkdefs.h presence... no
| checking for sys/clkdefs.h... no
| checking sys/file.h usability... yes
| checking sys/file.h presence... yes
| checking for sys/file.h... yes
| checking sys/ioctl.h usability... yes
| checking sys/ioctl.h presence... yes
| checking for sys/ioctl.h... yes
| checking sys/lock.h usability... yes
| checking sys/lock.h presence... yes
| checking for sys/lock.h... yes
| checking sys/mman.h usability... yes
| checking sys/mman.h presence... yes
| checking for sys/mman.h... yes
| checking sys/modem.h usability... no
| checking sys/modem.h presence... no
| checking for sys/modem.h... no
| checking sys/param.h usability... yes
| checking sys/param.h presence... yes
| checking for sys/param.h... yes
| checking sys/ppsclock.h usability... no
| checking sys/ppsclock.h presence... no
| checking for sys/ppsclock.h... no
| checking sys/ppstime.h usability... no
| checking sys/ppstime.h presence... no
| checking for sys/ppstime.h... no
| checking sys/proc.h usability... no
| checking sys/proc.h presence... yes
| configure: WARNING: sys/proc.h: present but cannot be compiled
| configure: WARNING: sys/proc.h: check for missing prerequisite headers?
| configure: WARNING: sys/proc.h: proceeding with the preprocessor's result
| configure: WARNING:     ## ------------------------------------ ##
| configure: WARNING:     ## Report this to address@hidden ##
| configure: WARNING:     ## ------------------------------------ ##
| checking for sys/proc.h... yes
| checking sys/resource.h usability... yes
| checking sys/resource.h presence... yes
| checking for sys/resource.h... yes
| checking sys/sched.h usability... no
| checking sys/sched.h presence... no
| checking for sys/sched.h... no
| checking sys/select.h usability... yes
| checking sys/select.h presence... yes
| checking for sys/select.h... yes
| checking sys/signal.h usability... yes
| checking sys/signal.h presence... yes
| checking for sys/signal.h... yes
| checking sys/sockio.h usability... yes
| checking sys/sockio.h presence... yes
| checking for sys/sockio.h... yes
| checking machine/soundcard.h usability... yes
| checking machine/soundcard.h presence... yes
| checking for machine/soundcard.h... yes
| checking sys/soundcard.h usability... yes
| checking sys/soundcard.h presence... yes
| checking for sys/soundcard.h... yes
| checking for sys/stat.h... (cached) yes
| checking sys/stream.h usability... no
| checking sys/stream.h presence... no
| checking for sys/stream.h... no
| checking sys/stropts.h usability... no
| checking sys/stropts.h presence... no
| checking for sys/stropts.h... no
| checking sys/sysctl.h usability... yes
| checking sys/sysctl.h presence... yes
| checking for sys/sysctl.h... yes
| checking sys/syssgi.h usability... no
| checking sys/syssgi.h presence... no
| checking for sys/syssgi.h... no
| checking sys/systune.h usability... no
| checking sys/systune.h presence... no
| checking for sys/systune.h... no
| checking sys/termios.h usability... yes
| checking sys/termios.h presence... yes
| checking for sys/termios.h... yes
| checking sys/time.h usability... yes
| checking sys/time.h presence... yes
| checking for sys/time.h... yes
| checking for sys/signal.h... (cached) yes
| checking sys/timepps.h usability... yes
| checking sys/timepps.h presence... yes
| checking for sys/timepps.h... yes
| checking sys/timers.h usability... yes
| checking sys/timers.h presence... yes
| checking for sys/timers.h... yes
| checking sys/timex.h usability... yes
| checking sys/timex.h presence... yes
| checking for sys/timex.h... yes
| checking sys/tpro.h usability... no
| checking sys/tpro.h presence... no
| checking for sys/tpro.h... no
| checking for sys/types.h... (cached) yes
| checking sys/wait.h usability... yes
| checking sys/wait.h presence... yes
| checking for sys/wait.h... yes
| checking whether time.h and sys/time.h may both be included... yes
| checking nlist.h usability... yes
| checking nlist.h presence... yes
| checking for nlist.h... yes
| checking for n_un in struct nlist... no
| checking for resolv.h... no
| checking for basic volatile support... (cached) yes
| checking for gcc option to accept ANSI C... none needed
| checking for function prototypes... yes
| checking for ANSI C header files... (cached) yes
| checking for string.h... (cached) yes
| checking if C compiler permits function prototypes... yes
| checking for an ANSI C-conforming const... yes
| checking whether byte ordering is bigendian... no
| checking return type of signal handlers... void
| checking for off_t... yes
| checking for size_t... yes
| checking for time_t... yes
| checking whether struct tm is in sys/time.h or time.h... time.h
| checking for u_int8_t... yes
| checking for u_int64_t... yes
| checking for a fallback value for HZ... 100
| checking if we need to override the system's value for HZ... yes
| checking struct sigaction for sa_sigaction... yes
| checking for struct ppsclockev... no
| checking struct sockaddr for sa_len... yes
| checking for struct snd_size... yes
| checking struct clockinfo for hz... yes
| checking struct clockinfo for tickadj... yes
| checking for struct timespec... yes
| checking for struct ntptimeval... yes
| checking for struct ntptimeval.time.tv_nsec... yes
| checking for inline... inline
| checking whether char is unsigned... no
| checking for signed char... yes
| checking size of signed char... 1
| checking for int... yes
| checking size of int... 4
| checking for long... yes
| checking size of long... 4
| checking for s_char... no
| checking for uid_t in sys/types.h... yes
| checking for clock_gettime... yes
| checking for clock_settime... yes
| checking for daemon... yes
| checking for finite... no
| checking for isfinite... no
| checking for isfinite with <math.h>... no
| checking for getbootfile... yes
| checking for getclock... no
| checking for getdtablesize... yes
| checking for getrusage... yes
| checking for gettimeofday... yes
| checking for getuid... yes
| checking for hstrerror... yes
| checking for K_open... no
| checking for kvm_open... yes
| checking for memcpy... yes
| checking for memmove... yes
| checking for memset... yes
| checking for mkstemp... yes
| checking for mktime... yes
| checking for mlockall... no
| checking for mrand48... yes
| checking for srand48... yes
| checking for nice... yes
| checking for nlist... yes
| checking for ntp_adjtime... yes
| checking for ntp_gettime... yes
| checking for plock... no
| checking for pututline... no
| checking for pututxline... no
| checking for readlink... yes
| checking for rtprio... yes
| checking for sched_setscheduler... yes
| checking for setlinebuf... yes
| checking for setpgid... yes
| checking for setpriority... yes
| checking for setsid... yes
| checking for settimeofday... yes
| checking for setvbuf... yes
| checking for sigaction... yes
| checking for sigvec... yes
| checking for sigset... no
| checking for sigsuspend... yes
| checking for stime... no
| checking for strchr... yes
| checking for sysconf... yes
| checking for sysctl... yes
| checking for snprintf... yes
| checking for strdup... yes
| checking for strerror... yes
| checking for strstr... yes
| checking for timegm... yes
| checking for timer_create... no
| checking for timer_settime... no
| checking for umask... yes
| checking for uname... yes
| checking for updwtmp... no
| checking for updwtmpx... no
| checking for vsprintf... yes
| checking number of arguments to gettimeofday()... 2
| checking number of arguments taken by setpgrp()... 2
| checking argument pointer type of qsort()'s compare function and base...
| void
| checking if we need to declare 'errno'... no
| checking if we may declare 'h_errno'... yes
| checking if declaring 'char *sys_errlist[]' is ok... no
| checking if declaring 'syscall()' is ok... yes
| checking if we need extra room for SO_RCVBUF... no
| checking if we will open the broadcast socket... yes
| checking if we want the HPUX version of FindConfig()... no
| checking if process groups are set with -pid... no
| checking if we need a ctty for F_SETOWN... yes
| checking if we'll use clock_settime or settimeofday or stime...
| clock_settime()
| checking if we have a losing syscall()... no
| checking for Streams/TLI... no
| checking for SIGIO... yes
| checking if we want to use signalled IO... no
| checking for SIGPOLL... no
| checking for SIGSYS... yes
| checking if we can use SIGPOLL for UDP I/O... no
| checking if we can use SIGPOLL for TTY I/O... no
| checking if nlist() values might require extra indirection... no
| checking for a minimum recommended value of tickadj... no
| checking if the TTY code permits PARENB and IGNPAR... yes
| checking if we're including debugging code... yes
| checking for a the number of minutes in a DST adjustment... 60
| checking if we have the tty_clk line discipline/streams module...
| checking for the ppsclock streams module... no
| checking for kernel multicast support... yes
| checking availability of ntp_{adj,get}time()... libc
| checking if sys/timex.h has STA_FLL... yes
| checking if we have kernel PLL support... yes
| checking if SIOCGIFCONF returns buffer size in the buffer... no
| checking ioctl TIOCGPPSEV... no
| checking ioctl TIOCSPPS... no
| checking ioctl CIOGETEV... no
| checking linux/serial.h usability... no
| checking linux/serial.h presence... no
| checking for linux/serial.h... no
| checking ioctl TIOCGSERIAL... no
| checking SHMEM_STATUS support... yes
| checking Datum/Bancomm bc635/VME interface... no
| checking TrueTime GPS receiver/VME interface... no
| checking for PCL720 clock support... no
| checking for SHM clock attached thru shared memory... no
| checking for default inclusion of all suitable non-PARSE clocks... yes
| checking if we have support for PARSE clocks... yes
| checking if we have support for audio clocks... yes
| checking ACTS modem service... yes
| checking Arbiter 1088A/B GPS receiver... yes
| checking Arcron MSF receiver... yes
| checking Austron 2200A/2201A GPS receiver... yes
| checking ATOM PPS interface... yes
| checking Chrono-log K-series WWVB receiver... yes
| checking CHU modem/decoder... yes
| checking CHU audio/decoder... yes
| checking Datum Programmable Time System... yes
| checking Dumb generic hh:mm:ss local clock... yes
| checking Forum Graphic GPS... yes
| checking Heath GC-1000 WWV/WWVH receiver... yes
| checking for hopf serial clock device... yes
| checking for hopf PCI clock 6039... yes
| checking HP 58503A GPS receiver... yes
| checking IRIG audio decoder... yes
| checking for JJY receiver... yes
| checking Rockwell Jupiter GPS receiver... no
| checking Leitch CSD 5300 Master Clock System Driver... yes
| checking local clock reference... yes
| checking EES M201 MSF receiver... yes
| checking Magnavox MX4200 GPS receiver... no
| checking for NeoClock4X receiver... yes
| checking NMEA GPS receiver... yes
| checking for ONCORE Motorola VP/UT Oncore GPS... yes
| checking for Palisade clock... yes
| checking Conrad parallel port radio clock... yes
| checking PST/Traconex 1020 WWV/WWVH receiver... yes
| checking PTB modem service... yes
| checking RIPENCC specific Trimble driver... no
| checking Spectracom 8170/Netclock/2 WWVB receiver... yes
| checking KSI/Odetics TPRO/S GPS receiver/IRIG interface... no
| checking TRAK 8810 GPS receiver... yes
| checking Kinemetrics/TrueTime receivers... yes
| checking TrueTime 560 IRIG-B decoder... no
| checking Ultralink M320 WWVB receiver... yes
| checking USNO modem service... yes
| checking WWV receiver... yes
| checking for Zyfer receiver... yes
| checking for default inclusion of all suitable PARSE clocks... no
| checking Diem Computime Radio Clock... no
| checking ELV/DCF7000 clock... no
| checking HOPF 6021 clock... no
| checking Meinberg clocks... no
| checking DCF77 raw time code... no
| checking RCC 8000 clock... no
| checking Schmid DCF77 clock... no
| checking Trimble GPS receiver/TAIP protocol... no
| checking Trimble GPS receiver/TSIP protocol... no
| checking WHARTON 400A Series clock... no
| checking VARITEXT clock... no
| checking if we need to make and use the parse libraries... no
| checking for openssl library directory... /usr/lib
| checking for openssl include directory... /usr/include
| checking for EVP_md2... yes
| checking for EVP_mdc2... yes
| checking for the level of crypto support... openssl
| checking if we want to compile with ElectricFence... no
| checking if we want to try SNTP... no
| checking if we can make dcf parse utilities... no
| checking if we can build kernel streams modules for parse... no
| checking if we need basic refclock support... yes
| checking if we want HP-UX adjtimed support... no
| checking if we want QNX adjtime support... no
| checking if we can read kmem... yes
| checking if adjtime is accurate... no
| checking the name of 'tick' in the kernel... _tick
| checking for the units of 'tick'... usec
| checking the name of 'tickadj' in the kernel... _tickadj
| checking for the units of 'tickadj'... usec
| checking half-heartedly for 'dosynctodr' in the kernel... _dosynctodr
| checking half-heartedly for 'noprintf' in the kernel... _noprintf
| checking for a default value for 'tick'... 1000000L/hz
| checking for a default value for 'tickadj'... 500/hz
| checking if we want and can make the ntptime utility... yes
| checking if we want and can make the tickadj utility... (cached) yes
| checking if we want and can make the timetrim utility... no
| checking if we want to build the NTPD simulator... no
| checking if we want UDP wildcard delivery... yes
| checking if we should always slew the time... no
| checking if we should step and slew the time... no
| checking if ntpdate should step the time... no
| checking if we should sync TODR clock every hour... no
| checking if we should avoid kernel FLL bug... no
| checking if we should use the IRIG sawtooth filter... no
| configure: creating ./config.status
| config.status: creating Makefile
| config.status: creating ElectricFence/Makefile
| config.status: creating adjtimed/Makefile
| config.status: creating clockstuff/Makefile
| config.status: creating include/Makefile
| config.status: creating kernel/Makefile
| config.status: creating kernel/sys/Makefile
| config.status: creating libntp/Makefile
| config.status: creating libparse/Makefile
| config.status: creating ntpd/Makefile
| config.status: creating ntpdate/Makefile
| config.status: creating ntpdc/Makefile
| config.status: creating ntpq/Makefile
| config.status: creating ntptrace/Makefile
| config.status: creating parseutil/Makefile
| config.status: creating scripts/Makefile
| config.status: creating scripts/calc_tickadj
| config.status: creating scripts/checktime
| config.status: creating scripts/freq_adj
| config.status: creating scripts/mkver
| config.status: creating scripts/ntp-wait
| config.status: creating scripts/ntpsweep
| config.status: creating scripts/ntptrace
| config.status: creating scripts/ntpver
| config.status: creating scripts/plot_summary
| config.status: creating scripts/summary
| config.status: creating util/Makefile
| config.status: creating config.h
| config.status: executing depfiles commands