dnl Process this file with autoconf to produce a configure script.
AC_INIT(eggdrop.conf.dist)
ac_default_prefix=\${HOME}/eggdrop
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 crazy machines
AC_AIX
AC_ISC_POSIX
AC_MINIX
dnl no cross-compiling!

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)

AC_PROG_RANLIB

dnl stop putting -g in there!  @#$!#$%!
if test "x${CFLAGS}" = "x"
then
  CFLAGS="-O"
  if test "x$CC" = "xgcc"
  then
    CFLAGS="-O2"
  fi
else
  CFLAGS=${CFLAGS}
fi

dnl cp checks
AC_MSG_CHECKING(whether cp takes -f)
ac_file1=beldin1
ac_file2=beldin2
ac_cp="cp -f $ac_file1 $ac_file2"

cat > $ac_file1 <<EOF
Beldin is a llama.  :P
EOF
if { (eval echo configure: \"$ac_cp\") 1>&5; (eval $ac_cp) 2>&5; } && test -s $ac_file2; then
  AC_MSG_RESULT(yes)
  ac_cv_prog_cp_f=yes
  CP1="cp -f"
  CP2="cp -rf"
  CP3="cp -pf"
else
  AC_MSG_RESULT(no)
  ac_cv_prog_cp_f=no
  CP1="cp"
  CP2="cp -r"
  CP3="cp -p"
fi
rm -f $ac_file1 $ac_file2

dnl test the os and set the module linking settings
if test "x$STRIP" = "x"
then
  STRIP="touch"
fi
IRIX=no
NT=no
EGGEXEC=eggdrop
LINUX=no
need_dl=1
DEFAULT_MAKE=eggdrop
BEL_MOD_CC="${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`
DLOPEN_1=1
case $system in
  Linux)
    CFLAGS="$CFLAGS -Wall"
    AC_MSG_RESULT(Linux! The choice of the GNU generation)
    SHLIB_LD="${CC} -shared -nostartfiles"
    BEL_MOD_LD="${CC}"
    AC_DEFINE(MODULES_OK)
    LINUX=yes
    DLOPEN_1=
    ;;
  BSD/OS)
    if test x`uname -r | cut -d . -f 1` = "x2"
    then
      AC_MSG_RESULT(BSD/OS 2! statically linked modules are the only choice)
      need_dl=0
      DEFAULT_MAKE=static
    else
      AC_MSG_RESULT(BSD/OS 3+! ok I spose)
      BEL_MOD_CC="shlicc"
      BEL_MOD_LD="shlicc"
      BEL_MOD_STRIP="${STRIP} -d"
      SHLIB_LD="shlicc -r"
      SHLIB_STRIP="touch"
      AC_DEFINE(MODULES_OK)
    fi
    AC_CHECK_PROG(GMAKE,gmake,gmake)
    if test "x$GMAKE" = "x"
    then
      echo ""
      echo "Yoicks! you have BSD/OS & you dont have 'gmake', you may"
      echo "not be able to compile the bot successfully :("
      echo ""
    fi
    ;;
  *BSD)
    AC_MSG_RESULT(FreeBSD/NetBSD/OpenBSD - choose your poison)
    SHLIB_CC="$CC -fpic"
    SHLIB_LD="ld -Bshareable -x"
    AC_DEFINE(MODULES_OK)
    DLOPEN_1=
    ;;
  SunOS)
    if test x`uname -r | cut -d . -f 1` = "x5"
    then
      AC_MSG_RESULT(Solaris!)
      SHLIB_LD="/usr/ccs/bin/ld -G -z text"
    else
      AC_MSG_RESULT(SunOS 4 :/)
      SHLIB_LD="ld"
      SHLIB_STRIP="touch"
    fi
    AC_DEFINE(MODULES_OK)
    SHLIB_CC="${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 $@:'
	AC_DEFINE(OSF1_HACKS)
	AC_DEFINE(MODULES_OK)
	;;
      1.*)
	AC_MSG_RESULT(1.3+)
	SHLIB_CFL="$CC -fpic"
	SHLIB_LD='ld -shared'
	AC_DEFINE(OSF1_HACKS)
	AC_DEFINE(MODULES_OK)
	;;
      *)
	AC_MSG_RESULT(Some other weird OSF! No modules for you..)
	need_dl=0
	DEFAULT_MAKE=static
	;;
    esac
    AC_DEFINE(STOP_UAC)
    ;;
  HP-UX)
    AC_MSG_RESULT(HP-UX, just shoot yourself now)
    AC_CHECK_LIB(dld,shl_load)
    AC_DEFINE(MODULES_OK)
    AC_DEFINE(HPUX_HACKS)
    if test x`uname -r | cut -d . -f 2` = "x10"
    then
       AC_DEFINE(HPUX10_HACKS)
    fi
    BEL_MOD_LD="gcc -Wl,-E"
    SHLIB_CC="gcc -fPIC"
    SHLIB_LD="ld -b"
    need_dl=0
    ;;
  IRIX64)
    echo "$ac_t""you are cursed with IRIX" 1>&6
    IRIX=yes 
    STRIP=   
    need_dl=0
    DEFAULT_MAKE=static
    ;;
  IRIX)
    AC_MSG_RESULT(you are cursed with IRIX)
    IRIX=yes
    STRIP=
    need_dl=0
    DEFAULT_MAKE=static
    ;;
  *)
    if test -r /mach
    then
      AC_MSG_RESULT(NeXT...We are borg, you will be assimilated)
      AC_MSG_RESULT(break out the static modules, it's all you'll ever get :P)
      AC_MSG_RESULT(Hiya DK :P)
      AC_DEFINE(BORGCUBES)
    else
      AC_MSG_RESULT(Something unknown!!)
      AC_MSG_RESULT(If you get dynamic modules to work, be sure to let the devel team know HOW :)
    fi
    need_dl=0
    DEFAULT_MAKE=static
    ;;
esac

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

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 stdarg.h dlfcn.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 bzero uname vsnprintf)

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

if test "${ac_cv_header_stdc}" = "no"
then
  echo ""
  echo "Your system must support ANSI C Header files."
  echo "These are required for the language support. Sorry."
  exit
fi

dnl check how much space is left in filedb (informational purposes)
AC_MSG_CHECKING(space left in file database struct)
cat >abacab.c <<'EOF'
#include <stdio.h>
#include <sys/time.h>
#include "src/mod/filesys.mod/files.h"
main() {
  fprintf(stderr,"%d/%d",512-sizeof(struct filler),sizeof(filedb));
}
EOF
${CC} -o abacab abacab.c
FILEDB_SPACE=`./abacab`
AC_MSG_RESULT($FILEDB_SPACE bytes)
rm -f abacab abacab.o abacab.c
echo "   (standard is currently 48/512 bytes)"

dnl where is tcl?  is it here?

# ---------- begin robey's tcl thingies

dnl oohh new configure --variables for those with multiple tcl libs
AC_CHECK_PROG(BASENAME,basename,basename)
AC_CHECK_PROG(DIRNAME,dirname,dirname)
if test $BASENAME = "" || test $DIRNAME = ""
then
  echo ack...no basename or dirname, we cant configure tcl without em.
  exit 1
fi

AC_ARG_WITH(tcllib, [  --with-tcllib=PATH      full path to tcl library], tcllibname=$withval)
AC_ARG_WITH(tclinc, [  --with-tclinc=PATH      full path to tcl header], tclincname=$withval)

if test -r "$tcllibname"
then
  TCLLIB=`$DIRNAME $tcllibname`
  TCLLIBFN=`$BASENAME $tcllibname | cut -c4-`
  echo "using tcllib $TCLLIB/lib$TCLLIBFN"
else

 libnames="tcl.so tcl.so.1\
	tcl8.2.so tcl8.2.so.1 tcl82.so.1.0 tcl82.so.1\
	tcl8.1.so tcl8.1.so.1 tcl81.so.1.0 tcl81.so.1\
	tcl8.0.so tcl8.0.so.1 tcl80.so.1.0 tcl80.so.1\
	tcl7.6.so tcl7.6.so.1 tcl76.so.1.0 tcl76.so.1\
	tcl7.5.so tcl7.5.so.1 tcl75.so.1.0 tcl75.so.1\
	tcl.a\
	tcl8.2.a tcl82.a\
	tcl8.1.a tcl81.a\
	tcl8.0.a tcl80.a\
	tcl7.6.a tcl76.a\
	tcl7.5.a tcl75.a\
	tcl7.4.a tcl74.a"

 # look for libtcl: if TCLLIB is set, check there first
 if test "$TCLLIB" != ""
 then
   TCLLIBFN=notfound
   for checkfn in $libnames
   do
     if test -r $TCLLIB/lib$checkfn
     then
       if test $TCLLIBFN = notfound
       then
	 TCLLIBFN=$checkfn
       fi
     fi
   done
   if test $TCLLIBFN = notfound
   then
     echo "Environment variable TCLLIB is set, but incorrect."
     unset TCLLIB
   fi
 fi

 # check in common places now
 AC_MSG_CHECKING(for libtcl)
 if test "$TCLLIB" = ""
 then
   for checkfn in $libnames
   do
     if test "$TCLLIB" = ""
     then
       for check in /usr/local/lib /usr/local/lib/tcl /usr/local/pkgs/tcl/lib /usr/lib /usr/i486-linuxaout/lib $HOME/lib $HOME/tcl $HOME/tcl/lib $HOME /lib
       do
	 if test -r $check/lib$checkfn
         then
	   if test "$TCLLIB" = ""
           then
	     AC_MSG_RESULT(found in $check/lib$checkfn)
	     TCLLIB=$check
	     TCLLIBFN=$checkfn
	   fi
	 fi
       done
     fi
   done
 else
   AC_MSG_RESULT(found in $TCLLIB/lib$TCLLIBFN)
 fi

fi # option

# give up if they don't even have that
if test "$TCLLIB" = ""
then
  AC_MSG_RESULT(not found)
fi

# now look for pesky $TCLINCFN file
if test -r "$tclincname"
then
  TCLINC=`$DIRNAME $tclincname`
  TCLINCFN=`$BASENAME $tclincname`
  echo "using TCL header $TCLINC/$TCLINCFN"
else
  TCLINCFN=tcl.h
  if test "$TCLINC" != ""
  then
    if test ! -r $TCLINC/$TCLINCFN
    then
      echo "Environment variable TCLINC is set, but incorrect."
      unset TCLINC
    fi
  fi

  # check in common places now
  AC_MSG_CHECKING(for $TCLINCFN)
  if test "$TCLINC" = ""
  then
    for check in /usr/local/include /usr/local/include/tcl /usr/local/pkgs/tcl/include /usr/include /usr/include/tcl $HOME/include $HOME/tcl $HOME/tcl/include $HOME
    do
      if test -r $check/$TCLINCFN
      then
	if test "$TCLINC" != ""
        then
	  break
	fi
	AC_MSG_RESULT(found in $check/$TCLINCFN)
	TCLINC=$check
	break
      fi
    done
    # freebsd hack
    if test "$TCLINC" = ""
    then
      for ver in 8.2 8.1 8.0 7.6 7.5 7.4
      do
	if test -r /usr/local/include/tcl$ver/$TCLINCFN
        then
	  if test "$TCLINC" != ""
          then
	    break
	  fi
	  AC_MSG_RESULT(found in /usr/local/include/tcl$ver/$TCLINCFN)
	  TCLINC=/usr/local/include/tcl$ver
	  break
	fi
      done
    fi
  else
    AC_MSG_RESULT(found in $TCLINC/$TCLINCFN)
  fi

  # had TCLLIB but not TCLINC?  so close... :(
  if test "$TCLINC" = ""
  then
    AC_MSG_RESULT(not found)
    unset TCLLIB
    unset TCLLIBFN
  fi
fi # option

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

if test "$TCLLIB" = ""
then
  echo ""
  echo "I can't find Tcl on this system."
  echo ""
  echo "Eggdrop now requires Tcl to compile.  If you already have Tcl"
  echo "installed on this system, and I just wasn't looking in the right"
  echo "place for it, set the environment variables TCLLIB and TCLINC so"
  echo "I will know where to find 'libtcl.a' (or 'libtcl.so') and '$TCLINCFN'"
  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
  echo Checking $TCLINC directory for tcl version
  AC_MSG_CHECKING(for Tcl version)
  tclver=`grep TCL_VERSION $TCLINC/$TCLINCFN | grep "7.5" | wc -l`
  if test $tclver = 0; then
    tclver=`grep TCL_VERSION $TCLINC/$TCLINCFN | grep "7.6" | wc -l`
    if test $tclver = 0; then
      tclver=`grep TCL_VERSION $TCLINC/$TCLINCFN | grep "8.0" | wc -l`
      if test $tclver = 0; then
	tclver=`grep TCL_VERSION $TCLINC/$TCLINCFN | grep "8.1" | wc -l`
	if test $tclver = 0; then
	  tclver=`grep TCL_VERSION $TCLINC/$TCLINCFN | grep "8.2" | wc -l`
	  if test $tclver = 1; then
	    AC_MSG_RESULT(8.2 found)	
	  else
	    AC_MSG_RESULT(hmm... unknown version)
          fi
	else
	  AC_MSG_RESULT(8.1 found)
	fi
      else
	AC_MSG_RESULT(8.0 found!)
      fi
    else
      AC_MSG_RESULT(7.6 found!)
    fi
  else      
    AC_MSG_RESULT(7.5 found)
  fi
fi # option 

  if test $need_dl = 1 -a "${ac_cv_func_dlopen}" = "no"
  then
    if test "$LINUX" = "yes"
    then
      echo "Since you are on a Linux system, this has a known problem,"
      if test -r /lib/libdl.so.1
      then
	echo "and you seem to have it, I know a kludge for it,"
	echo "so we'll do that..."
	echo ""
	AC_DEFINE(HAVE_DLOPEN)
	LIBS="/lib/libdl.so.1 $LIBS"
	got_dl=1
      else 
	echo "which you DONT seem to have... doh!"
	echo "perhaps you may still have the stuff lying around somewhere"
	echo "if you work out where it is, add it to your XLIBS= lines"
	echo "and #define HAVE_DLOPEN in config.h"
	echo ""
	echo "we'll proceed on anyways, but you probably won't be able"
	echo "to 'make eggdrop' but you might be able to make the"
	echo "static bot (I'll default your make to this version)."
	DEFAULT_MAKE=static
      fi
    else 
      echo "You don't seem to have libdl anywhere I can find it, this will"
      echo "prevent you from doing dynamic modules, I'll set your default"
      echo "make to static linking."
      DEFAULT_MAKE=static
    fi
  fi

  TCLLIBFNS=`basename $TCLLIBFN .a`
  TCLLIBFNS=`basename $TCLLIBFNS .so.1.2`
  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
    echo ""
    echo "You're tcl version is way too old - Version 7.4 or earlier"
    echo "I suggest you download and complie a more recent version"
    echo "The most reliable current version is 8.2b1"
    echo ""
    exit 1
  fi

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

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

if test ! "x$GMAKE" = "x"
then
  SET_MAKE="MAKE=gmake"
fi

if test -z "$DEST"
then
  DEST=\${prefix}
fi

AC_SUBST(DEST)
AC_SUBST(CP1)
AC_SUBST(CP2)
AC_SUBST(CP3)
AC_SUBST(EGGEXEC)
AC_SUBST(CC)
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_SUBST(DLFLAGS)
AC_SUBST(DEFAULT_MAKE)

AC_OUTPUT(Makefile lush.h)

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

echo ""
echo "Configure is done."
echo ""
echo "If your bot will be on Dalnet, or a network that uses their server"
echo "code, please edit the Makefile and remove \"-DRFC_COMPLIANT\" from"
echo "the \"CFLGS=\" line."
echo ""
echo "Type 'make' to create the bot"
echo ""