:
# Guess values for system-dependent variables and create `Makefile'.
# Copyright (C) 1991 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# Usage:
#configure [--srcdir=DIR] [--prefix=DIR] [--host=HOST] [--gas] [--nfp] [TARGET]
#All args except --srcdir=DIR, --prefix=DIR, and --exec_prefix=DIR are ignored.

# @(#)configure 1.26 92/04/10

trap 'rm -f conftest* core* uttest; exit 1' 1 2 3 15

# Uncomment out the next line if your sh aborts if an unset variable
# is referenced; some popular systems do not understand +u and most
# bourne shells should already have this set as the default...
#set +u

# Make sure we don't find the System V /etc/install.
PATH=`echo $PATH|sed '
s,^:,|,
s,:$,|,
s,:/usr/etc\([:|]\),\1,g
s,:/usr/etc$,,g
s,\([:|]\)/usr/etc:,\1,g
s,^/usr/etc:,,g
s,:/usr/sbin\([:|]\),\1,g
s,:/usr/sbin$,,g
s,\([:|]\)/usr/sbin:,\1,g
s,^/usr/sbin:,,g
s,:/etc\([:|]\),\1,g
s,:/etc$,,g
s,\([:|]\)/etc:,\1,g
s,^/etc:,,g
s,|,:,g'`

# A filename unique to this package, relative to the directory that
# configure is in, which we can look for to find out if srcdir is correct.
unique_file=src/update.c

# Default destination directory is /usr/local
# Binaries go in "bin", libraries in "lib", manual pages in "man".
prefix=/usr/local

for arg in $*; do
  # Handle --srcdir with a space before the argument.
  if [ x$next_srcdir = xyes ]; then srcdir=$arg; next_srcdir=
  # Handle --prefix with a space before the argument.
  elif [ x$next_prefix = xyes ]; then prefix=$arg; next_prefix=
  # Handle --exec_prefix with a space before the argument.
  elif [ x$next_exec_prefix = xyes ]; then exec_prefix=$arg; next_prefix=
  # Handle --host with a space before the argument.
  elif [ x$next_host = xyes ]; then next_host=
  else 
    case $arg in
     -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=* | --s=*)
	srcdir=`echo $arg | sed 's/^[-a-z]*=//'` ;;
     -srcdir | --srcdir | --srcdi | --srcd | --src | --sr | --s)
	next_srcdir=yes ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
	prefix=`echo $arg | sed 's/^[-a-z]*=//'` ;;
     -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
	next_prefix=yes ;;
     -exec_prefix=* | --exec_prefix=* | --exec_prefi=* | --exec_pref=* | --exec_pre=* | --exec_pr=* | --exec_p=* | --exec_=* | --exec=* | --exe=* | --ex=* | --e=*)
	exec_prefix=`echo $arg | sed 's/^[-a-z_]*=//'` ;;
     -exec_prefix | --exec_prefix | --exec_prefi | --exec_pref | --exec_pre | --exec_pr | --exec_p | --exec_ | --exec | --exe | --ex | --e)
	next_exec_prefix=yes ;;
     -host=* | --host=* | --hos=* | --ho=* | --h=*) ;;
     -host | --host | --hos | --ho | --h)
	next_host=yes ;;
     -gas | --gas | --ga | --g) ;;
     -nfp | --nfp | --nf | --n) ;;
     *) ;;
    esac
  fi
done

if [ -z "${exec_prefix}" ] ; then exec_prefix=${prefix} ; fi

vpsub='s@\$\([-./a-zA-Z0-9]*\)<@\1@g'
# Find the source files, if location was not specified.
if [ x$srcdir = x ]; then
  srcdirdefaulted=yes; srcdir=.
  if [ ! -r $unique_file ]; then srcdir=`pwd`/..; fi
fi
if [ $srcdir != . ]; then
  VPATH='VPATH = $(srcdir)'
  vpsub='s@\$\([-./a-zA-Z0-9]*\)<@\$<@g'
fi

if [ ! -r $srcdir/$unique_file ]; then
  if [ x$srcdirdefaulted = xyes ]; then
    echo "$0: Can not find sources in \`.' or \`..'." 1>&2
  else
    echo "$0: Can not find sources in \`${srcdir}'." 1>&2
  fi
  exit 1
fi

if grep '^#.*define.*MY_NDBM' ${srcdir}/src/config.h >/dev/null 2>/dev/null; then :
  CC1=gcc
  CC2=cc
else
  CC1=cc
  CC2=gcc
fi

if test "$RANDOM" = "$RANDOM"; then
  # Plain old Bourne shell.
  if test -z "$CC"; then
    echo checking for cc/gcc
    test -n "`$CC1 / 2>&1`" && CC="$CC1"
    if test -z "$CC"; then
      test -n "`$CC2 2>&1`" && CC="$CC2"
    fi
  fi

  echo checking for install
  if test -z "$INSTALL" && test -n "`install 2>&1`"; then
    INSTALL="install -c"
    INSTALLDATA="install -c -m 644"
  fi

  echo checking for ranlib
  test -z "$RANLIB" && test -n "`ranlib conftest 2>&1`" && RANLIB=ranlib
  rm -f conftest*

  echo checking for bison/yacc
  test -z "$YACC" && test -n "`bison 2>&1`" && YACC="bison -y"
else
  # ksh, bash or zsh.  ksh and zsh write "command not found" to stderr.
  if test -z "$CC"; then
    echo checking for cc/gcc
    type $CC1 && CC="$CC1"
    test -z "$CC" && type $CC2 && CC="$CC2"
  fi

  echo checking for install
  if test -z "$INSTALL" && type install; then
    INSTALL="install -c"
    INSTALLDATA="install -c -m 644"
  fi

  echo checking for ranlib
  test -z "$RANLIB" && type ranlib && RANLIB=ranlib

  echo checking for bison/yacc
  test -z "$YACC" && type bison && YACC="bison -y"
fi

CC=${CC-cc}
INSTALL=${INSTALL-cp}
INSTALLDATA=${INSTALLDATA-cp}
RANLIB=${RANLIB-echo}
YACC=${YACC-yacc}

rm -f conftest*
compile='$CC $DEFS $TDEFS conftest.c -o conftest $TLIBS $LIBS >/dev/null 2>&1'

# Check for various header files.

echo checking for Minix
if test -d /usr/include/minix; then
  DEFS="$DEFS -UUSG -D_POSIX_SOURCE -D_POSIX_1_SOURCE=2 -D_POSIX_C_SOURCE=2 -D_MINIX"
else
  echo checking for BSD string and memory functions
  echo "
#include <strings.h>
main() { exit(0); } t() { rindex(0, 0); bzero(0, 0); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
    else DEFS="$DEFS -DUSG"
  fi
  rm -f conftest*
fi

echo checking signal handler return type
echo "
#include <sys/types.h>
#include <signal.h>
void foo() { exit(0); }
main() { exit(0); } t() { signal(SIGINT, foo); kill(getpid(), SIGINT); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else DEFS="$DEFS -DSIGTYPE=int"
fi
rm -f conftest*

echo checking for directory library header
echo '
#include <sys/types.h>
#ifdef DIRENT
#include <dirent.h>
#ifdef direct
#undef direct
#endif
#define direct dirent
#else
#ifdef SYSNDIR
#include <sys/ndir.h>
#else
#ifdef NDIR
#include <ndir.h>
#else /* must be BSD */
#include <sys/dir.h>
#endif
#endif
#endif
main() { DIR *d = opendir(".");
	struct direct *e;
	while ((e = readdir(d)))
		if (strcmp(e->d_name, "conftestfile") == 0)
			exit(0);
	exit(1);
}' > conftest.c
> conftestfile
TDEFS=-DDIRENT
eval $compile
TDEFS=
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
  DEFS="$DEFS -DDIRENT"
else
  rm -f conftest
  TDEFS=-DDIRENT
  TLIBS=-ldir
  eval $compile 
  TDEFS=
  TLIBS=
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
    DEFS="$DEFS -DDIRENT"
    LIBS="-ldir $LIBS"
  else
    rm -f conftest
    TDEFS=-DSYSNDIR
    eval $compile
    TDEFS=
    if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
      DEFS="$DEFS -DSYSNDIR"
    else
      rm -f conftest
      TDEFS=-DSYSNDIR
      TLIBS=-lx
      eval $compile
      TDEFS=
      TLIBS=
      if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
	DEFS="$DEFS -DSYSNDIR"
	LIBS="$LIBS -lx"
      else
	rm -f conftest
	TDEFS=-DNDIR
	eval $compile
	TDEFS=
	if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
	  DEFS="$DEFS -DNDIR"
	else
	  eval $compile
	  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
	  else
	    echo >&2 "configure: opendir() is missing; cannot continue"
	    rm -f conftest*
	    exit 1
	  fi
	fi
      fi
    fi
  fi
fi
rm -f foo conftest*

echo checking for ANSI C header files
echo "#include <stddef.h>
#include <stdlib.h>
#include <string.h>
main() { exit(0); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
  DEFS="$DEFS -DSTDC_HEADERS"
fi
rm -f conftest*

echo checking for POSIX.1 header files
echo "#include <unistd.h>
main() {
#ifdef _POSIX_VERSION
exit(0);
#else
exit(1);
#endif
}" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
  DEFS="$DEFS -DPOSIX"
fi
rm -f conftest*

echo checking for uid_t in sys/types.h
echo "#include <sys/types.h>
main() { exit(0); } t() { uid_t x; }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  DEFS="$DEFS -Duid_t=int -Dgid_t=int"
fi
rm -f conftest*

echo checking for mode_t in sys/types.h
echo "#include <sys/types.h>
main() { exit(0); } t() { mode_t x; }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  DEFS="$DEFS -Dmode_t=int"
fi
rm -f conftest*

echo checking for size_t in sys/types.h
echo "#include <sys/types.h>
main() { exit(0); } t() { size_t x; }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  DEFS="$DEFS -Dsize_t=unsigned"
fi
rm -f conftest*

echo checking for unsigned characters
echo 'main() { char c = 255; exit(c < 0); }' > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
  DEFS="$DEFS -D__CHAR_UNSIGNED__"
fi
rm -f conftest*

echo checking whether time.h has struct tm
echo '#include <sys/types.h>
#include <time.h>
main() { struct tm *tp; exit(0); }' > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else DEFS="$DEFS -DTM_IN_SYS_TIME"
fi
rm -f conftest*

# Check whether various functions exist.

# Functions we provide replacements for.
for func in fnmatch getwd mkdir rename strdup
do
  echo checking for $func
  echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else LIBOBJS="$LIBOBJS ${func}.o"
  fi
  rm -f conftest*
done

func=gethostname
echo checking for $func
echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else LIBOBJS="$LIBOBJS hostname.o"
fi
rm -f conftest*

func=re_exec
echo checking for $func
echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else LIBOBJS="$LIBOBJS regex.o"
fi
rm -f conftest*

func=dup2
echo checking for $func
echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else LIBOBJS="$LIBOBJS dup2.o"
fi
rm -f conftest*

# Functions whose absence we work around.
for func in fchmod fsync ftime mkfifo putenv strerror setvbuf vfork vprintf
do
  echo checking for $func
  echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else DEFS="$DEFS -D`echo $func|tr '[a-z]' '[A-Z]'`_MISSING"
  fi
  rm -f conftest*
done

echo checking for timeb.h header file
echo '
#include <stdio.h>
#include <sys/types.h>
#ifdef TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif
#include <sys/timeb.h>
main() { exit(0); } t() { struct timeb tb; printf("%d", sizeof(tb)); }' > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  DEFS="$DEFS -DTIMEB_H_MISSING"
fi
rm -f conftest*

case "$DEFS" in
*VPRINTF_MISSING*)
  func=_doprnt
  echo checking for $func
  echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else DEFS="$DEFS -DDOPRNT_MISSING"
  fi
  rm -f conftest*
  ;;
esac

case "$DEFS" in
*FTIME_MISSING*)
  echo checking for timezone
  echo "main() { extern char *timezone(); printf(\"%s\",timezone(0,0)); exit(0); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
    DEFS="$DEFS -DHAVE_TIMEZONE"
  fi
  rm -f conftest* core*
  ;;
esac

case "$DEFS" in
*POSIX*)
  ;;
*)
  echo checking for BSD signals
  echo "
#include <signal.h>
main() { exit(0); } t() { sigvec(); sigblock(); }" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
    DEFS="$DEFS -DBSD_SIGNALS"
  fi
  rm -f conftest*
  ;;
esac

func=ftruncate
echo checking for $func
echo "main() { exit(0); } t() { ${func}(); }" > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  rm -f conftest*
  echo "
#include <sys/types.h>
#include <fcntl.h>
main() { exit(0); }
#if !defined(F_CHSIZE) && !defined(F_FREESP)
t() { chsize(); }
#endif
" > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
    LIBOBJS="$LIBOBJS ${func}.o"
  else DEFS="$DEFS -D`echo $func|tr '[a-z]' '[A-Z]'`_MISSING"
  fi
fi
rm -f conftest*

# Check other misc. things.

echo checking utime with null argument
rm -f uttest; > uttest
# Sequent interprets utime(file, 0) to mean use start of epoch.  Wrong.
echo '#include <sys/types.h>
#include <sys/stat.h>
main() {
struct stat s, t;
exit(!(stat ("uttest", &s) == 0 && utime("uttest", (long *)0) == 0
&& stat("uttest", &t) == 0 && t.st_mtime - s.st_mtime < 120));
}' > conftest.c
eval $compile
test -s conftest && (./conftest) >/dev/null 2>/dev/null || DEFS="$DEFS -DUTIME_NULL_MISSING"
rm -f conftest* core* uttest

case "$LIBOBJS" in
*rename.o*)
  LIBPROGS="$LIBPROGS mvdir"
  DEFS="$DEFS -DMVDIR="'\\"$(libdir)/mvdir\\"'
  ;;
esac

echo checking how to get alloca
echo '
#ifdef __GNUC__
#define alloca __builtin_alloca
#else
#ifdef sparc
#include <alloca.h>
#else
#ifdef _AIX
 #pragma alloca
#else
char *alloca ();
#endif
#endif
#endif
main() { char *p = (char *) alloca(1); exit(0); }' > conftest.c
eval $compile
if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
else
  # I've had some problems with this stuff.  If you need -lPW for some
  # reason, try uncommenting the lines below
  #  rm -f conftest*
  #  echo 'char *alloca();
  #main() { char *p = alloca(1); exit(0); }' > conftest.c
  #  eval $compile -lPW
  #  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then LIBS="$LIBS -lPW"
  #  else
  LIBOBJS="$LIBOBJS alloca.o"
  #  fi
fi
rm -f conftest*

if grep '^#.*define.*MY_NDBM' ${srcdir}/src/config.h >/dev/null 2>/dev/null; then :
else
  echo checking for ndbm support
  echo '#include <ndbm.h>
  main() { exit(0); } t() { dbm_open(0); dbm_close(0); }' > conftest.c
  eval $compile
  if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then :
  else
    TLIBS=-lgdbm
    eval $compile
    TLIBS=
    if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
      LIBS="$LIBS -lgdbm"
    else
      TDEFS="-I${prefix}/include"
      TLIBS="-L${prefix}/lib -lgdbm"
      eval $compile
      TDEFS=
      TLIBS=
      if test -s conftest && (./conftest) >/dev/null 2>/dev/null; then
        DEFS="$DEFS -I${prefix}/include"
        LIBS="$LIBS -L${prefix}/lib -lgdbm"
      else
        echo 'configure: Warning: you will likely have to install GNU dbm'
        echo '                    (including the <ndbm.h> header file)'
        echo '                    and re-run this configure script'
      fi
    fi
  fi
  rm -f conftest*
fi

echo checking for $CC -g -O combination
echo "main() { exit(0); }" > conftest.c
if test -n "`$CC -g -O -o conftest conftest.c 2>&1`"; then
  if test -n "`$CC -g -o conftest conftest.c 2>&1`"; then
    CDEBUG=
  else
    CDEBUG="-g"
  fi
else
  CDEBUG="-g -O"
fi
rm -f conftest*

trap 'rm -f Makefile lib/Makefile src/Makefile man/Makefile doc/Makefile examples/Makefile contrib/Makefile config.status conftest*; exit 1' 1 2 3 15

for dir in . lib src man doc examples contrib
do
  test -d $dir || mkdir $dir
  if test "$srcdir" = "."; then
    xsrcdir="."
    includeopt=
  else
    case $srcdir in
    /*)
      xsrcdir=$srcdir/$dir
      includeopt="-I$srcdir/lib"
      ;;
    *)
      xsrcdir=../$srcdir/$dir
      includeopt="-I../$srcdir/lib"
      ;;
    esac
    if test "$dir" = "."; then
      xsrcdir=$srcdir
    fi
  fi
  echo '# Generated automatically from Makefile.in by configure.' > $dir/Makefile
  sed -e "
$vpsub
s,@srcdir@,$xsrcdir,
s,@prefix@,$prefix,
s,@exec_prefix@,$exec_prefix,
s,@includeopt@,$includeopt,
s,@VPATH@,$VPATH,
s,@CC@,$CC,
s,@RANLIB@,$RANLIB,
s,@YACC@,$YACC,
s,@INSTALL@,$INSTALL,
s,@INSTALLDATA@,$INSTALLDATA,
s,@DEFS@,$DEFS,
s,@LIBS@,$LIBS,
s,@LIBPROGS@,$LIBPROGS,
s,@LIBOBJS@,$LIBOBJS,
s,@CDEBUG@,$CDEBUG,
" $srcdir/$dir/Makefile.in >> $dir/Makefile
done

echo "srcdir = $srcdir
prefix = $prefix
exec_prefix = $exec_prefix
includeopt = $includeopt
VPATH = $VPATH
CC = $CC
RANLIB = $RANLIB
YACC = $YACC
INSTALL = $INSTALL
INSTALLDATA = $INSTALLDATA
DEFS = $DEFS
LIBS = $LIBS
LIBPROGS = $LIBPROGS
LIBOBJS = $LIBOBJS
CDEBUG = $CDEBUG" > config.status