[ MARK configure.in ]

@dnl Process this file with autoconf to produce a configure script.
AC_INIT(eggdrop.conf)
AC_CONFIG_HEADER(config.h)

echo ""
echo "This is eggdrop's GNU configure script."
echo "It's going to run a bunch of strange tests to hopefully make"
echo "your compile work without much twiddling."
echo ""

AC_PROG_CC

dnl no cross-compiling!
dnl AC_C_CROSS  <- was merged into AC_PROG_CC

if test ! x${cross_compiling} = xno; then
  echo ""
  echo "This system does not appear to have a working C compiler."
  echo "A working C compiler is required to compile eggdrop."
  echo ""
  exit
fi

dnl Checks for programs.
AC_PROG_MAKE_SET
AC_CHECK_PROG(STRIP,strip,strip)
AC_CHECK_PROG(UNAME,uname,uname)

dnl 'nawk' is NOT compatable! dammit!
dnl no longer use awk for anything
dnl AC_CHECK_PROGS(AWK,awk gawk mawk)

AC_PROG_RANLIB

dnl stop putting -g in there!  @#$!#$%!
dnl also fix strength-reduce problem in gcc
CFLAGS="-O"
if test "x$CC" = "xgcc"; then
  CFLAGS="-O2 -fno-strength-reduce"
fi

dnl test the os and set the module linking settings
if test "x$STRIP" = "x"; then
  STRIP="touch"
fi
IRIX=no
NT=no
EGGEXEC=eggdrop
LINUX=no
BEL_MOD_CC="${CC}"
BEL_MOD_LD="${CC}"
BEL_MOD_STRIP="${STRIP}"
SHLIB_CC="${CC}"
SHLIB_LD="${CC}"
SHLIB_STRIP="${STRIP}"
AC_MSG_CHECKING(your OS)
system=`$UNAME`
case $system in
  Linux)
    CFLAGS="${CFLAGS} -Wall"
    AC_MSG_RESULT(Linux! rock the house!)
    SHLIB_LD="${CC} -shared"
    AC_DEFINE(MODULES_OK)
    LINUX=yes
    ;;
  FreeBSD)
    AC_MSG_RESULT(FreeBSD! enjoy!)
    SHLIB_CC="$CC -fpic"
    SHLIB_LD="ld -Bshareable -x"
    AC_DEFINE(MODULES_OK)
    ;;
  BSD/OS)
    if test x`uname -r | cut -d . -f 1` = "x3"; then
      AC_MSG_RESULT(BSD/OS 3! ok I spose)
      BEL_MOD_CC="shlicc"
      BEL_MOD_LD="shlicc"
      BEL_MOD_STRIP="${STRIP} -d"
      SHLIB_LD="shlicc -r"
      SHLIB_STRIP="touch"
      AC_DEFINE(MODULES_OK)
      AC_DEFINE(DLOPEN_MUST_BE_1)
    else
      AC_MSG_RESULT(BSD/OS 2! no modules for you)
    fi
    ;;
  SunOS)
    if test x`uname -r | cut -d . -f 1` = "x5"; then
      AC_MSG_RESULT(Solaris!)
      SHLIB_LD="/usr/ccs/bin/ld -G -z text"
    else
      AC_MSG_RESULT(SunOS 4 :/)
      SHLIB_LD="ld"
      SHLIB_STRIP="touch"
      AC_DEFINE(DLOPEN_MUST_BE_1)
    fi
    AC_DEFINE(MODULES_OK)
    SHLIB_CC="${CC} -fPIC"
    BEL_MOD_CC="${CC} -fPIC"
    ;;
  OSF1)
    AC_MSG_RESULT(OSF...)
    case `uname -r | cut -d . -f 1` in
      V*)
        AC_MSG_RESULT(Digital OSF)
	SHLIB_LD='ld -shared -expect_unresolved "*"'
	SHLIB_STRIP="touch"
        AC_DEFINE(MODULES_OK)
        ;;
      1.0|1.1|1.2)
        AC_MSG_RESULT(pre 1.3)
	SHLIB_LD='ld -R -export $@:'
        AC_DEFINE(MODULES_OK)
        ;;
      1.*)
        AC_MSG_RESULT(1.3+)
        SHLIB_CFL="$CC -fpic"
	SHLIB_LD='ld -shared'
        AC_DEFINE(MODULES_OK)
        ;;
      *)
        AC_MSG_RESULT(Some other weird OSF! No modules for you..)
	;;
    esac
    AC_DEFINE(STOP_UAC)
    ;;
  IRIX)
    AC_MSG_RESULT(you are cursed with IRIX)
    IRIX=yes
    STRIP=
    ;;
  CYGWIN32/NT)
    AC_MSG_RESULT(Windows NT -- enjoy the ride! Don't come asking us for help.)
    NT=yes
    STRIP=
    EGGEXEC=eggdrop.exe
    ;;
  *)
    AC_MSG_RESULT(Something unknown!!)
    AC_MSG_RESULT(If you get modules to work, be sure to let the devel team know HOW :)
    ;;
esac

dnl Check for Sun libraries.
if test ${IRIX} = yes; then
  echo Skipping library tests because they CONFUSE Irix.
else
  AC_CHECK_LIB(socket,socket)
  AC_CHECK_LIB(nsl,connect)
  AC_CHECK_LIB(dns,gethostbyname)
  if test x`${UNAME}` = "xSunOS"; then
    AC_MSG_CHECKING(for SunOS 4)
    if test x`uname -r | cut -d . -f 1` = "x5"; then
      AC_MSG_RESULT(Solaris -- yay)
    else
      AC_MSG_RESULT(SunOS -- sigh)
      dnl for suns without yp or something like that:
      AC_CHECK_LIB(dl,main)
    fi
  fi
fi

dnl crazy machines
AC_AIX
AC_ISC_POSIX
AC_MINIX

AC_C_BIGENDIAN
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(sys/time.h sys/select.h sys/rusage.h unistd.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_PID_T
AC_HEADER_TIME

dnl Checks for library functions.
AC_CHECK_FUNCS(rename getrusage getdtablesize srandom random sigaction)
AC_CHECK_FUNCS(sigemptyset vsprintf strcasecmp setpgid clock dlopen)
AC_CHECK_FUNCS(dprintf)

if test "${ac_cv_func_vsprintf}" = "no"; then
  echo ""
  echo "Your system does not have the sprintf/vsprintf libraries."
  echo "These are required to compile almost anything.  Sorry."
  echo ""
  exit
fi

dnl check how much space is left in filedb (infoset TCLINC
    fi
  fi

  # check in common places now
  AC_MSG_CHECKING(for tcl.h)
  if test "$TCLINC" = ""; then
    for check in /usr/local/include /usr/local/include/tcl /usr/local/pkgs/tcl/include /usr/include /usr/include/tcl $HOME $HOME/tcl $HOME/tcl/include;
    do
      if test -r $check/tcl.h; then
        if test "$TCLINC" != ""; then
          break
        fi
        AC_MSG_RESULT(found in $check/tcl.h)
        TCLINC=$check
        break
      fi
    done
  else
    AC_MSG_RESULT(found in $TCLINC/tcl.h)
  fi
 
  # had TCLLIB but not TCLINC?  so close... :(
  if test "$TCLINC" = ""; then
    AC_MSG_RESULT(not found)
    unset TCLLIB
    unset TCLLIBFN
  fi
fi

# done looking, now either TCLLIB & TCLINC are both set, or neither is set

if test "$TCLLIB" = ""; then
  echo ""
  echo "I can't find Tcl on this system."
  echo ""
  echo "Eggdrop now requires Tcl to compile.  If you already have Tcl"
  echo "installed on this system, and I just wasn't looking in the right"
  echo "place for it, set the environment variables TCLLIB and TCLINC so"
  echo "I will know where to find 'libtcl.a' (or 'libtcl.so') and 'tcl.h'"
  echo "(respectively).  Then run 'configure' again."
  echo ""
  echo "Read the README file if you don't know what Tcl is or how to get"
  echo "it and install it."
  echo ""
  exit 1
else
  AC_MSG_CHECKING(for Tcl version)
  tclver=`grep TCL_VERSION $TCLINC/tcl.h | grep "7.4" | wc -l`
  if test $tclver = 0; then
    tclver=`grep TCL_VERSION $TCLINC/tcl.h | grep "7.5" | wc -l`
    if test $tclver = 0; then
      tclver=`grep TCL_VERSION $TCLINC/tcl.h | grep "7.6" | wc -l`
      if test $tclver = 0; then
        tclver=`grep TCL_VERSION $TCLINC/tcl.h | grep "8.0" | wc -l`
        if test $tclver = 1; then
          AC_MSG_RESULT(8.0 found!)
          need_dl=1
        else
          AC_MSG_RESULT(hmm... unknown version)
        fi
      else
        AC_MSG_RESULT(7.6 found!)
        need_dl=1
      fi
    else
      AC_MSG_RESULT(7.5 found!)
      need_dl=1
    fi
  else      
    AC_MSG_RESULT(7.4 found)
    echo "   7.4 is kind of old; you may want to upgrade soon."
    need_dl=0
  fi

  if test $need_dl = 1 -a "${ac_cv_func_dlopen}" = "no"; then
    got_dl=0
    dnl some weird weird OS's put it here :/
    if test -r /usr/bin/libdl.so.1; then
      CFLAGS="$CFLAGS -L/usr/bin"
    fi
    AC_CHECK_LIB(dl,dlopen,got_dl=1)
    if test $got_dl = 0; then
      echo ""
      echo "In order to use versions of Tcl from 7.5 on, you must have"
      echo "the DL libraries somewhere on your system (-ldl)."
      echo ""
      if test "$LINUX" = "yes"; then
        echo "Since you are on a Linux system, this has a know problem,"
	if test -r /lib/libdl.so.1; then
	   echo "and you seem to have it, get your sys admin to make a"
	   echo "symbolic link from libdl.so to libdl.so.1 in lib"
	   echo ""	
	   exit 1
	fi
	echo "which you DONT seem to have... doh!"
	echo ""
      fi
      echo "We'll keep going anyway, you may get away with it..."
      echo "I *doubt* it tho.."
      echo ""
    else
      AC_DEFINE(HAVE_DLOPEN)
    fi
    LIBS="-ldl $LIBS"
  fi
  TCLLIBFNS=`basename $TCLLIBFN .a`
  TCLLIBFNS=`basename $TCLLIBFNS .so.1.0`
  TCLLIBFNS=`basename $TCLLIBFNS .so.1`
  TCLLIBFNS=`basename $TCLLIBFNS .so`
  if test $tclver = 1; then
    TCL_REQS="$TCLLIB/lib$TCLLIBFN"
    TCL_LIBS="-L$TCLLIB -l$TCLLIBFNS -lm"
  else
    AC_MSG_RESULT(7.3 or earlier -- sigh)
    TCL_REQS="libtcle.a"
    TCL_LIBS="-L. -ltcle -lm"
  fi
fi

AC_SUBST(TCLINC)
AC_SUBST(TCLLIB)
AC_SUBST(TCLLIBFN)
AC_SUBST(TCL_REQS)
AC_SUBST(TCL_LIBS)

# ---------- end of robey's tcl thingies

AC_SUBST(EGGEXEC)

AC_SUBST(SHLIB_LD)
AC_SUBST(SHLIB_CC)
AC_SUBST(SHLIB_STRIP)
AC_SUBST(BEL_MOD_LD)
AC_SUBST(BEL_MOD_CC)
AC_SUBST(BEL_MOD_STRIP)

AC_OUTPUT(Makefile lush.h)

# if you configure again, you must re-make everything.  tough shit.
make clean

echo ""
echo "Configure is done."
echo "Type 'make eggdrop' to create the non-module bot, and"
echo " 'make eggmod' for the module bot."
echo ""