# Configure template for GNU tar.
# Copyright (C) 1991, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
# Process this file with autoconf to produce a configure script.

AC_INIT(src/tar.c)
AM_CONFIG_HEADER(config.h)
AC_PREREQ(2.12)
AM_INIT_AUTOMAKE(tar, 1.12)
AC_DEFINE(_GNU_SOURCE)
ALL_LINGUAS="de fr it ko nl no pl pt sl sv"

fp_PROG_ECHO
test $fp_cv_prog_echo_nonl = no \
  && echo 2>&1 "WARNING: \`echo' not powerful enough for \`make check'"
AC_PROG_CC
AC_PROG_GCC_TRADITIONAL
AC_AIX
AC_MINIX
AC_PROG_RANLIB
AC_PROG_YACC

AC_ISC_POSIX
AM_C_PROTOTYPES
AC_C_CONST
AC_C_INLINE
AC_CHECK_SIZEOF(unsigned long, 4)
AC_CHECK_SIZEOF(long long, 0)

AC_CHECK_HEADERS(fcntl.h limits.h linux/fd.h memory.h net/errno.h poll.h \
sgtty.h string.h stropts.h \
sys/buf.h sys/device.h sys/gentape.h sys/inet.h sys/io/trioctl.h sys/ioccom.h \
sys/mtio.h sys/param.h sys/tprintf.h sys/tape.h sys/time.h sys/timeb.h \
sys/wait.h unistd.h)

# It seems that that many machines where <utime.h> seems to be
# broken just require something like -D_XXX_SOURCE, where XXX might
# be POSIX, POSIX_C, ALL, HPUX or whatever, depending on the machine.

AC_CACHE_CHECK(for utime.h, tar_cv_header_utime_h,
  [AC_TRY_COMPILE([
#include <sys/types.h>
#include <utime.h>], [struct utimbuf foo],
  tar_cv_header_utime_h=yes, tar_cv_header_utime_h=no)])
test $tar_cv_header_utime_h = yes && AC_DEFINE(HAVE_UTIME_H)

if test $ac_cv_header_sys_mtio_h = yes; then
  AC_CACHE_CHECK(for remote tape header files, tar_cv_header_rmt,
    [AC_TRY_CPP([
#if HAVE_SGTTY_H
# include <sgtty.h>
#endif
#include <sys/socket.h>],
    tar_cv_header_rmt=yes, tar_cv_header_rmt=no)])
  test $tar_cv_header_rmt = yes && RMT=rmt
  AC_SUBST(RMT)
fi

AC_CACHE_CHECK(for getgrgid declaration, tar_cv_header_getgrgid,
  [AC_EGREP_HEADER(getgrgid, grp.h,
  tar_cv_header_getgrgid=yes, tar_cv_header_getgrgid=no)])
test $tar_cv_header_getgrgid = yes && AC_DEFINE(HAVE_GETGRGID)

AC_CACHE_CHECK(for getpwuid declaration, tar_cv_header_getpwuid,
  [AC_EGREP_HEADER(getpwuid, pwd.h,
  tar_cv_header_getpwuid=yes, tar_cv_header_getpwuid=no)])
test $tar_cv_header_getpwuid = yes && AC_DEFINE(HAVE_GETPWUID)

AC_CACHE_CHECK(which ioctl field to test for reversed bytes,
  tar_cv_header_mtio_check_field,
  [AC_EGREP_HEADER(mt_model, sys/mtio.h,
  tar_cv_header_mtio_check_field=mt_model,
  tar_cv_header_mtio_check_field=mt_type)])
AC_DEFINE_UNQUOTED(MTIO_CHECK_FIELD, $tar_cv_header_mtio_check_field)

AC_HEADER_DIRENT
AC_HEADER_MAJOR
AC_HEADER_STAT
AC_HEADER_STDC
AC_HEADER_TIME
AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_UID_T

AC_CHECK_FUNCS(fsync ftime getcwd isascii lchown mkfifo nap napms poll \
select strerror strstr usleep)

AC_CACHE_CHECK(for mknod, tar_cv_func_mknod,
  [AC_TRY_LINK([
#include <sys/types.h>
#include <sys/stat.h>],
  [mknod (0, 0, 0)],
  tar_cv_func_mknod=yes, tar_cv_func_mknod=no)])
test $tar_cv_func_mknod = yes && AC_DEFINE(HAVE_MKNOD)

# Whenever both -lsocket and -lnsl are needed, it seems to be always the
# case that gethostbyname requires -lnsl.  So, check -lnsl first, for it
# to be in LIBS before the setsockopt checks are performed.  *However*,
# on SINIX-N 5.43, this is false, and gethostent seems to be a better
# candidate. So, let's use it below instead of gethostbyname, and see.

AC_CHECK_FUNC(gethostent)
if test $ac_cv_func_gethostent = no; then
  AC_CHECK_LIB(nsl, gethostent)
fi
AC_CHECK_FUNC(setsockopt)
if test $ac_cv_func_setsockopt = no; then
  AC_CHECK_LIB(socket, setsockopt)
fi

AC_FUNC_ALLOCA
AC_FUNC_FNMATCH
test $ac_cv_func_fnmatch_works = yes || LIBOBJS="$LIBOBJS fnmatch.o"
AC_FUNC_VPRINTF
AC_REPLACE_FUNCS(basename dirname execlp ftruncate memset mkdir rename rmdir)
test "$ac_cv_func_strstr" = yes || LIBOBJS="$LIBOBJS strstr.o"

# The 3-argument open happens to go along with the O_* defines, which
# are easier to check for.

AC_CACHE_CHECK(for 3-argument open, tar_cv_func_open3,
  [AC_TRY_COMPILE([
#if HAVE_FCNTL_H
# include <fcntl.h>
#else
# include <sys/file.h>
#endif],
  [int x = O_RDONLY],
  tar_cv_func_open3=yes, tar_cv_func_open3=no)])
if test $tar_cv_func_open3 = no; then
  AC_DEFINE(EMUL_OPEN3)
fi

# `union wait' is preferrably avoided.  We merely assume below
# that if `int pid;' fails, `union wait pid;' would have worked.
# Directly trying `union wait pid;' is seeking for trouble, as
# some POSIX systems are offering compatibility hacks generating
# ugly diagnostics.  Also, on some systems, WEXITSTATUS exists,
# but fails when called on `union wait' variables.

AC_CACHE_CHECK(for union wait, tar_cv_header_union_wait,
  [AC_TRY_COMPILE([
#include <sys/types.h>
#if HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif],
  [int status; int pid; pid = wait (&status);],
  tar_cv_header_union_wait=no, tar_cv_header_union_wait=yes)])
test $tar_cv_header_union_wait = yes && AC_DEFINE(HAVE_UNION_WAIT)

AC_CACHE_CHECK(for remote shell, tar_cv_path_RSH,
  [if test -n "$RSH"; then
    tar_cv_path_RSH=$RSH
  else
    tar_cv_path_RSH=no
    for ac_file in /usr/ucb/rsh /usr/bin/remsh /usr/bin/rsh /usr/bsd/rsh \
  	/usr/bin/nsh /usr/bin/rcmd
    do
      if test -f $ac_file; then
        tar_cv_path_RSH=$ac_file
        break
      fi
    done
  fi])
if test $tar_cv_path_RSH = no; then
  AC_CHECK_HEADERS(netdb.h)
else
  AC_DEFINE_UNQUOTED(REMOTE_SHELL, "$tar_cv_path_RSH")
fi

AC_MSG_CHECKING(for default archive)

if test -z "$DEFAULT_ARCHIVE"; then
  DEFAULT_ARCHIVE=-
else
  if test -z "`ls $DEFAULT_ARCHIVE 2>/dev/null`"; then
    AC_MSG_WARN(DEFAULT_ARCHIVE \`$DEFAULT_ARCHIVE' not found on this system)
  fi
  # FIXME: Look for DEFTAPE in <sys/mtio.h>.
  # FIXME: Let DEVICE_PREFIX be configured from the environment.
  # FIXME: Rearrange, here.
  case $DEFAULT_ARCHIVE in
changequote(, )dnl
    *[0-7][lmh])
      device_prefix=`echo $DEFAULT_ARCHIVE | sed 's/[0-7][lmh]$//'`
changequote([, ])dnl
      AC_DEFINE_UNQUOTED(DEVICE_PREFIX, "$device_prefix")
      AC_DEFINE(DENSITY_LETTER)
      ;;
changequote(, )dnl
    *[0-7])
      device_prefix=`echo $DEFAULT_ARCHIVE | sed 's/[0-7]$//'`
changequote([, ])dnl
      AC_DEFINE_UNQUOTED(DEVICE_PREFIX, "$device_prefix")
      ;;
  esac
fi
AC_DEFINE_UNQUOTED(DEFAULT_ARCHIVE, "$DEFAULT_ARCHIVE")
AC_MSG_RESULT($DEFAULT_ARCHIVE)

AC_MSG_CHECKING(for default blocking)
DEFAULT_BLOCKING=${DEFAULT_BLOCKING-20}
AC_DEFINE_UNQUOTED(DEFAULT_BLOCKING, $DEFAULT_BLOCKING)
AC_MSG_RESULT($DEFAULT_BLOCKING)

fp_WITH_INCLUDED_MALLOC
AM_WITH_DMALLOC

AM_GNU_GETTEXT
AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl)

AC_OUTPUT([Makefile doc/Makefile intl/Makefile lib/Makefile po/Makefile.in \
scripts/Makefile src/Makefile tests/Makefile tests/preset],
[sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile])