dnl Process this file with autoconf to produce a configure script. -*-m4-*-
AC_INIT(src/stty.c)
AM_CONFIG_HEADER(config.h)
AC_PREREQ(2.13)               dnl Minimum Autoconf version required.
AC_CANONICAL_HOST

AM_INIT_AUTOMAKE([sh-utils], [2.0])

# Enable GNU extensions.
# Define this here, not in acconfig's @TOP@ section, since definitions
# in the latter don't make it into the configure-time tests.
AC_DEFINE([_GNU_SOURCE])

ALL_LINGUAS="cs de el es fr it nl no pl pt pt_BR ru sk sv zh"

jm_PERL
AC_SUBST(OPTIONAL_BIN_PROGS)
AC_SUBST(OPTIONAL_BIN_ZCRIPTS)
AC_SUBST(MAN)
AC_PROG_CC
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL
AC_PROG_RANLIB
AC_PROG_YACC
AC_AIX
AC_MINIX

dnl This test must come as early as possible after the compiler configuration
dnl tests, because the choice of the file model can (in principle) affect
dnl whether functions and headers are available, whether they work, etc.
AC_SYS_LARGEFILE

dnl This test must precede tests of compiler characteristics like
dnl that for the inline keyword, since it may change the degree to
dnl which the compiler supports such features.
AM_C_PROTOTYPES

AC_CHECK_FUNCS(uname,
	OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS uname" MAN="$MAN uname.1")
AC_CHECK_FUNCS(chroot,
	OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS chroot" MAN="$MAN chroot.1")
AC_CHECK_FUNCS(gethostid,
	OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS hostid" MAN="$MAN hostid.1")
AC_C_CONST
AC_HEADER_STDC
AC_C_BIGENDIAN

AC_STRUCT_TM
AC_HEADER_TIME
AC_STRUCT_TIMEZONE
AC_HEADER_STAT

jm_CHECK_ALL_TYPES

dnl Add any libraries as early as possible.
dnl In particular, inet_ntoa needs -lnsl at least on Solaris5.5.1,
dnl so we have to add -lnsl to LIBS before checking for that function.
AC_SEARCH_LIBS(gethostbyname, [inet nsl])

jm_MACROS

dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])

dnl These come from -lnsl on Solaris5.5.1.
AC_CHECK_FUNCS(gethostbyname gethostbyaddr inet_ntoa)

AC_CHECK_FUNCS(bcopy endgrent endpwent ftime getcwd \
               gettimeofday \
               isascii localeconv memcpy mempcpy sethostname \
               strchr strrchr strerror sysinfo tzset)

AC_MSG_CHECKING(whether localtime caches TZ)
AC_CACHE_VAL(utils_cv_localtime_cache,
[if test x$ac_cv_func_tzset = xyes; then
AC_TRY_RUN([#include <time.h>
#if STDC_HEADERS
# include <stdlib.h>
#endif
extern char **environ;
unset_TZ ()
{
  char **from, **to;
  for (to = from = environ; (*to = *from); from++)
    if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
      to++;
}
main()
{
  time_t now = time ((time_t *) 0);
  int hour_GMT0, hour_unset;
  if (putenv ("TZ=GMT0") != 0)
    exit (1);
  hour_GMT0 = localtime (&now)->tm_hour;
  unset_TZ ();
  hour_unset = localtime (&now)->tm_hour;
  if (putenv ("TZ=PST8") != 0)
    exit (1);
  if (localtime (&now)->tm_hour == hour_GMT0)
    exit (1);
  unset_TZ ();
  if (localtime (&now)->tm_hour != hour_unset)
    exit (1);
  exit (0);
}], utils_cv_localtime_cache=no, utils_cv_localtime_cache=yes,
[# If we have tzset, assume the worst when cross-compiling.
utils_cv_localtime_cache=yes])
else
	# If we lack tzset, report that localtime does not cache TZ,
	# since we can't invalidate the cache if we don't have tzset.
	utils_cv_localtime_cache=no
fi])dnl
AC_MSG_RESULT($utils_cv_localtime_cache)
if test $utils_cv_localtime_cache = yes; then
  AC_DEFINE(LOCALTIME_CACHE)
fi

# SCO-ODT-3.0 is reported to need -los to link programs using initgroups
AC_CHECK_FUNCS(initgroups)
if test $ac_cv_func_initgroups = no; then
  AC_CHECK_LIB(os, initgroups)
fi

AC_CHECK_FUNCS(syslog)
if test $ac_cv_func_syslog = no; then
  # syslog is not in the default libraries.  See if it's in some other.
  for lib in bsd socket inet; do
    AC_CHECK_LIB($lib, syslog, [AC_DEFINE(HAVE_SYSLOG)
      LIBS="$LIBS -l$lib"; break])
  done
fi

AC_CHECK_HEADERS(arpa/inet.h fcntl.h float.h limits.h netdb.h \
		 netinet/in.h stdlib.h string.h sys/param.h \
		 sys/socket.h sys/systeminfo.h sys/time.h sys/timeb.h \
		 syslog.h unistd.h paths.h termios.h)

AC_REPLACE_FUNCS(gethostname getusershell memcpy memset)
AC_REPLACE_FUNCS(stime strcspn stpcpy strstr strtol strtoul)

jm_FUNC_GROUP_MEMBER

jm_FUNC_PUTENV
AM_FUNC_ERROR_AT_LINE
jm_FUNC_GNU_STRFTIME
jm_FUNC_MKTIME

jm_FUNC_GETGROUPS
test -n "$GETGROUPS_LIB" && LIBS="$GETGROUPS_LIB $LIBS"

AC_FUNC_VPRINTF
AC_FUNC_ALLOCA

AC_MSG_CHECKING(for 3-argument setpriority function)
AC_CACHE_VAL(utils_cv_func_setpriority,
[AC_TRY_LINK([#include <sys/time.h>
#include <sys/resource.h>],
[setpriority(0, 0, 0);],
utils_cv_func_setpriority=yes, utils_cv_func_setpriority=no)])
AC_MSG_RESULT($utils_cv_func_setpriority)
if test $utils_cv_func_setpriority = yes; then
  OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS nice"
  OPTIONAL_BIN_ZCRIPTS="$OPTIONAL_BIN_ZCRIPTS nohup"
  MAN="$MAN nice.1 nohup.1"
else
  AC_MSG_CHECKING(for nice function)
  AC_CACHE_VAL(utils_cv_func_nice,
  [AC_TRY_LINK([], nice();,
  utils_cv_func_nice=yes, utils_cv_func_nice=no)])
  AC_MSG_RESULT($utils_cv_func_nice)
  if test $utils_cv_func_nice = yes; then
    AC_DEFINE(NICE_PRIORITY)
    OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS nice"
    OPTIONAL_BIN_ZCRIPTS="$OPTIONAL_BIN_ZCRIPTS nohup"
    MAN="$MAN nice.1 nohup.1"
  fi
fi

dnl For lib/readutmp.c.
AC_CHECK_FUNCS(utmpname)

AC_MSG_CHECKING(ut_host in struct utmp)
AC_CACHE_VAL(su_cv_func_ut_host_in_utmp,
[AC_TRY_LINK([#include <sys/types.h>
#include <utmp.h>], [struct utmp ut; ut.ut_host;],
su_cv_func_ut_host_in_utmp=yes, su_cv_func_ut_host_in_utmp=no)])
AC_MSG_RESULT($su_cv_func_ut_host_in_utmp)
if test $su_cv_func_ut_host_in_utmp = yes; then
  have_ut_host=1
  AC_DEFINE(HAVE_UT_HOST)
fi

if test -z "$have_ut_host"; then
  AC_MSG_CHECKING(ut_host in struct utmpx)
  AC_CACHE_VAL(su_cv_func_ut_host_in_utmpx,
  [AC_TRY_LINK([#include <sys/types.h>
#include <utmpx.h>], [struct utmpx ut; ut.ut_host;],
  su_cv_func_ut_host_in_utmpx=yes, su_cv_func_ut_host_in_utmpx=no)])
  AC_MSG_RESULT($su_cv_func_ut_host_in_utmpx)
  if test $su_cv_func_ut_host_in_utmpx = yes; then
    AC_DEFINE(HAVE_UTMPX_H)
    AC_DEFINE(HAVE_UT_HOST)
  fi
fi

AC_MSG_CHECKING(if we can get the system boot time)
AC_CACHE_VAL(su_cv_have_boot_time,
[AC_EGREP_CPP(yes,
[#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#else
#include <utmp.h>
#endif
#ifdef BOOT_TIME
yes
#endif
], su_cv_have_boot_time=yes, su_cv_have_boot_time=no)])
AC_MSG_RESULT($su_cv_have_boot_time)
if test X$su_cv_have_boot_time = Xyes
then
  OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS uptime"
fi

AM_FUNC_GETLOADAVG

jm_SYS_PROC_UPTIME

AM_SYS_POSIX_TERMIOS
jm_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL

if test $am_cv_sys_posix_termios = yes; then
  OPTIONAL_BIN_PROGS="$OPTIONAL_BIN_PROGS stty" MAN="$MAN stty.1"

  AC_MSG_CHECKING(whether termios.h needs _XOPEN_SOURCE)
  AC_CACHE_VAL(su_cv_sys_termios_needs_xopen_source,
  [AC_EGREP_CPP(yes, [#include <termios.h>
#ifdef IUCLC
yes
#endif], su_cv_sys_termios_needs_xopen_source=no,
   AC_EGREP_CPP(yes, [#define _XOPEN_SOURCE
#include <termios.h>
#ifdef IUCLC
yes
#endif], su_cv_sys_termios_needs_xopen_source=yes,
   su_cv_sys_termios_needs_xopen_source=no))])
  AC_MSG_RESULT($su_cv_sys_termios_needs_xopen_source)
  test $su_cv_sys_termios_needs_xopen_source = yes &&
    AC_DEFINE(TERMIOS_NEEDS_XOPEN_SOURCE)

  AC_MSG_CHECKING(c_line in struct termios)
  AC_CACHE_VAL(su_cv_sys_c_line_in_termios,
  [AC_TRY_LINK([#if TERMIOS_NEEDS_XOPEN_SOURCE
#define _XOPEN_SOURCE
#endif
#include <sys/types.h>
#include <termios.h>],
	      [struct termios t; t.c_line;],
	      su_cv_sys_c_line_in_termios=yes,
	      su_cv_sys_c_line_in_termios=no)])
  AC_MSG_RESULT($su_cv_sys_c_line_in_termios)
  test $su_cv_sys_c_line_in_termios = yes && AC_DEFINE(HAVE_C_LINE)
fi

jm_WINSIZE_IN_PTEM
jm_HEADER_TIOCGWINSZ_IN_TERMIOS_H
if test $jm_cv_sys_tiocgwinsz_needs_termios_h = no && \
   test $jm_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
  AC_MSG_CHECKING(TIOCGWINSZ in sys/pty.h)
  AC_CACHE_VAL(su_cv_sys_tiocgwinsz_in_sys_pty_h,
  [AC_TRY_LINK([#include <sys/types.h>
#ifdef WINSIZE_IN_PTEM
# include <sys/stream.h>
# include <sys/ptem.h>
#endif
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/pty.h>],
	      [int x = TIOCGWINSZ;],
	      su_cv_sys_tiocgwinsz_in_sys_pty_h=yes,
	      su_cv_sys_tiocgwinsz_in_sys_pty_h=no)])
  AC_MSG_RESULT($su_cv_sys_tiocgwinsz_in_sys_pty_h)

  test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
      && AC_DEFINE(GWINSZ_IN_SYS_PTY, 1,
                   [Define if your system defines TIOCGWINSZ in sys/pty.h.])
fi

# Some programs need to link with -lm.  printf does if it uses
# lib/strtod.c which uses pow.  And seq uses the math functions,
# floor, modf, rint.  And factor uses sqrt.

AC_SUBST(SEQ_LIBM)
# Chances are that seq will always need to link with -lm.
# If anyone finds a system for which -lm is not required to link seq,
# please send mail to the bug-reporting address and someone will add
# the appropriate tests.
SEQ_LIBM=-lm

# Save a copy of $LIBS and add $FLOOR_LIBM before these tests
# Check for these math functions used by seq.
ac_su_saved_lib="$LIBS"
LIBS="$LIBS -lm"
AC_CHECK_FUNCS(floor modf rint)
LIBS="$ac_su_saved_lib"

AM_FUNC_STRTOD
AC_SUBST(POW_LIBM)
test $am_cv_func_strtod_needs_libm = yes && POW_LIBM=-lm

AC_SUBST(SQRT_LIBM)
AC_CHECK_FUNCS(sqrt)
if test $ac_cv_func_sqrt = no; then
  AC_CHECK_LIB(m, sqrt, [SQRT_LIBM=-lm])
fi

# The -lsun library is required for YP support on Irix-4.0.5 systems.
# m88k/svr3 DolphinOS systems using YP need -lypsec for id.
AC_SEARCH_LIBS(yp_match, [sun ypsec])

# SysV needs -lsec, older versions of Linux need -lshadow for shadow passwords.
AC_SEARCH_LIBS(getspnam, [shadow sec])

AC_EGREP_HEADER(sp_pwdp, shadow.h,
		AC_CHECK_FUNC(getspnam, AC_DEFINE(HAVE_SHADOW_H)))

# SCO-ODT-3.0 is reported to need -lufc for crypt.
# NetBSD needs -lcrypt for crypt.
ac_su_saved_lib="$LIBS"
AC_SEARCH_LIBS(crypt, [ufc crypt], [LIB_CRYPT="$ac_cv_search_crypt"])
LIBS="$ac_su_saved_lib"
AC_SUBST(LIB_CRYPT)

AM_GNU_GETTEXT

# This is necessary so that .o files in LIBOBJS are also built via
# the ANSI2KNR-filtering rules.
LIBOBJS=`echo $LIBOBJS|sed 's/\.o /\$U.o /g;s/\.o$/\$U.o/'`

AC_OUTPUT([Makefile
	   doc/Makefile
	   intl/Makefile
	   lib/Makefile
	   man/Makefile
	   m4/Makefile
	   po/Makefile.in
	   src/Makefile
	   tests/Makefile
	   tests/basename/Makefile
	   tests/date/Makefile
	   tests/factor/Makefile
	   tests/seq/Makefile
	   tests/stty/Makefile
	   tests/test/Makefile
	  ])