#!/bin/sh

# Defaults

PREFIX=/usr/local

SYSCONFDIR="$PREFIX/etc/prosody"

DATADIR="$PREFIX/var/lib/prosody"

LUA_SUFFIX=""

LUA_DIR="/usr"

LUA_BINDIR="/usr/bin"

LUA_INCDIR="/usr/include"

LUA_LIBDIR="/usr/lib"

IDN_LIB=idn

ICU_FLAGS="-licui18n -licudata -licuuc"

OPENSSL_LIB=crypto

CC=gcc

CXX=g++

LD=gcc

RUNWITH=lua

EXCERTS=yes

CFLAGS="-fPIC -Wall"

LDFLAGS="-shared"

IDN_LIBRARY=idn

# Help

show_help() {

cat <<EOF

Configure Prosody prior to building.

--help                      This help.

--ostype=OS                 Use one of the OS presets.

                            May be one of: debian, macosx, linux, freebsd

--prefix=DIR                Prefix where Prosody should be installed.

                            Default is $PREFIX

--sysconfdir=DIR            Location where the config file should be installed.

                            Default is \$PREFIX/etc/prosody

--datadir=DIR               Location where the server data should be stored.

                            Default is \$PREFIX/var/lib/prosody

--lua-suffix=SUFFIX         Versioning suffix to use in Lua filenames.

                            Default is "$LUA_SUFFIX" (lua$LUA_SUFFIX...)

--with-lua=PREFIX           Use Lua from given prefix.

                            Default is $LUA_DIR

--runwith=BINARY            What Lua binary to set as runtime environment.

                            Default is $RUNWITH

--with-lua-include=DIR      You can also specify Lua's includes dir.

                            Default is \$LUA_DIR/include

--with-lua-lib=DIR          You can also specify Lua's libraries dir.

                            Default is \$LUA_DIR/lib

--with-idn=LIB              The name of the IDN library to link with.

                            Default is $IDN_LIB

--idn-library=(idn|icu)     Select library to use for IDNA functionality.

                            idn: use GNU libidn (default)

                            icu: use ICU from IBM

--with-ssl=LIB              The name of the SSL to link with.

                            Default is $OPENSSL_LIB

--cflags=FLAGS              Flags to pass to the compiler

                            Default is $CFLAGS

--ldflags=FLAGS             Flags to pass to the linker

                            Default is $LDFLAGS

--c-compiler=CC             The C compiler to use when building modules.

                            Default is $CC

--linker=CC                 The linker to use when building modules.

                            Default is $LD

--require-config            Will cause Prosody to refuse to run when

                            it fails to find a configuration file

--no-example-certs          Disables generation of example certificates.

EOF

}

while [ "$1" ]

do

   value="`echo $1 | sed 's/[^=]*=\(.*\)/\1/'`"

   if echo "$value" | grep -q "~"

   then

      echo

      echo '*WARNING*: the "~" sign is not expanded in flags.'

      echo 'If you mean the home directory, use $HOME instead.'

      echo

   fi

   case "$1" in

   --help)

      show_help

      exit 0

      ;;

   --prefix=*)

      PREFIX="$value"

      PREFIX_SET=yes

      ;;

   --sysconfdir=*)

      SYSCONFDIR="$value"

      SYSCONFDIR_SET=yes

      ;;

   --ostype=*)

      OSTYPE="$value"

      OSTYPE_SET=yes

      if [ "$OSTYPE" = "debian" ]

      then LUA_SUFFIX="5.1";

	LUA_SUFFIX_SET=yes

	RUNWITH="lua5.1"

	LUA_INCDIR=/usr/include/lua5.1;

	LUA_INCDIR_SET=yes

	CFLAGS="$CFLAGS -D_GNU_SOURCE"

	fi

	if [ "$OSTYPE" = "macosx" ]

	then LUA_INCDIR=/usr/local/include;

	LUA_INCDIR_SET=yes

	LUA_LIBDIR=/usr/local/lib

	LUA_LIBDIR_SET=yes

	LDFLAGS="-bundle -undefined dynamic_lookup"

	fi

        if [ "$OSTYPE" = "linux" ]

        then LUA_INCDIR=/usr/local/include;

        LUA_INCDIR_SET=yes

        LUA_LIBDIR=/usr/local/lib

        LUA_LIBDIR_SET=yes

        CFLAGS="-Wall -fPIC"

        CFLAGS="$CFLAGS -D_GNU_SOURCE"

        LDFLAGS="-shared"

        fi

        if [ "$OSTYPE" = "freebsd" -o "$OSTYPE" = "openbsd" ]

        then LUA_INCDIR="/usr/local/include/lua51"

        LUA_INCDIR_SET=yes

        CFLAGS="-Wall -fPIC -I/usr/local/include"

        LDFLAGS="-I/usr/local/include -L/usr/local/lib -shared"

        LUA_SUFFIX="-5.1"

        LUA_SUFFIX_SET=yes

        LUA_DIR=/usr/local

        LUA_DIR_SET=yes

        fi

        if [ "$OSTYPE" = "openbsd" ]

        then LUA_INCDIR="/usr/local/include";

        fi

      ;;

   --datadir=*)

   	DATADIR="$value"

   	DATADIR_SET=yes

      ;;

   --require-config)

      REQUIRE_CONFIG=yes

      ;;

   --lua-suffix=*)

      LUA_SUFFIX="$value"

      LUA_SUFFIX_SET=yes

      ;;

   --with-lua=*)

      LUA_DIR="$value"

      LUA_DIR_SET=yes

      ;;

   --with-lua-include=*)

      LUA_INCDIR="$value"

      LUA_INCDIR_SET=yes

      ;;

   --with-lua-lib=*)

      LUA_LIBDIR="$value" LUA_LIBDIR_SET=yes

      ;;

   --with-idn=*)

      IDN_LIB="$value"

      ;;

	--idn-library=*)

		IDN_LIBRARY="$value"

		;;

   --with-ssl=*)

      OPENSSL_LIB="$value"

      ;;

   --cflags=*)

      CFLAGS="$value"

      ;;

   --ldflags=*)

      LDFLAGS="$value"

      ;;

   --c-compiler=*)

      CC="$value"

      ;;

   --linker=*)

      LD="$value"

      ;;

   --runwith=*)

      RUNWITH="$value"

      ;;

    --no-example-certs)

      EXCERTS=

      ;;

   *)

      echo "Error: Unknown flag: $1"

      exit 1

      ;;

   esac

   shift

done

if [ "$PREFIX_SET" = "yes" -a ! "$SYSCONFDIR_SET" = "yes" ]

then

   if [ "$PREFIX" = "/usr" ]

   then SYSCONFDIR=/etc/prosody

   else SYSCONFDIR=$PREFIX/etc/prosody

   fi

fi

if [ "$PREFIX_SET" = "yes" -a ! "$DATADIR_SET" = "yes" ]

then

   if [ "$PREFIX" = "/usr" ]

   then DATADIR=/var/lib/prosody

   else DATADIR=$PREFIX/var/lib/prosody

   fi

fi

find_program() {

   path="$PATH"

   item="`echo "$path" | sed 's/\([^:]*\):.*/\1/'`"

   path="`echo "$path" | sed -n 's/[^:]*::*\(.*\)/\1/p'`"

   found="no"

   while [ "$item" ]

   do

      if [ -e "$item/$1" ]

      then

         found="yes"

         break

      fi

      item="`echo "$path" | sed 's/\([^:]*\):.*/\1/'`"

      path="`echo "$path" | sed -n 's/[^:]*::*\(.*\)/\1/p'`"

   done

   if [ "$found" = "yes" ]

   then

      echo "$item"

   else

      echo ""

   fi

}

if [ "$LUA_SUFFIX_SET" != "yes" ]

then

   for suffix in "5.1" "51" ""

   do

      LUA_SUFFIX="$suffix"

      if [ "$LUA_DIR_SET" = "yes" ]

      then

         if [ -e "$LUA_DIR/bin/lua$suffix" ]

         then

            find_lua="$LUA_DIR"

         fi

      else

         find_lua=`find_program lua$suffix`

      fi

      if [ "$find_lua" ]

      then

         echo "Lua interpreter found: $find_lua/lua$suffix..."

         break

      fi

   done

fi

if ! [ "$LUA_DIR_SET" = "yes" ]

then

   echo -n "Looking for Lua... "

   if [ ! "$find_lua" ]

   then

      find_lua=`find_program lua$LUA_SUFFIX`

      echo "lua$LUA_SUFFIX found in \$PATH: $find_lua"

   fi

   if [ "$find_lua" ]

   then

      LUA_DIR=`dirname $find_lua`

      LUA_BINDIR="$find_lua"

   else

      echo "lua$LUA_SUFFIX not found in \$PATH."

      echo "You may want to use the flags --with-lua and/or --lua-suffix. See --help."

      exit 1

   fi

fi

if ! [ "$LUA_INCDIR_SET" = "yes" ]

then

   LUA_INCDIR="$LUA_DIR/include"

fi

if ! [ "$LUA_LIBDIR_SET" = "yes" ]

then

   LUA_LIBDIR="$LUA_DIR/lib"

fi

if [ "$LUA_DIR_SET" = "yes" ]

then

   LUA_BINDIR="$LUA_DIR/bin"

fi

if [ "$IDN_LIBRARY" = "icu" ]

then

	IDNA_LIBS="$ICU_FLAGS"

	CFLAGS="$CFLAGS -DUSE_STRINGPREP_ICU"

fi

if [ "$IDN_LIBRARY" = "idn" ] 

then

	IDNA_LIBS="-l$IDN_LIB"

fi

echo -n "Checking Lua includes... "

lua_h="$LUA_INCDIR/lua.h"

if [ -e "$lua_h" ]

then

   echo "lua.h found in $lua_h"

else

   echo "lua.h not found (looked in $lua_h)"

   echo "You may want to use the flag --with-lua-include. See --help."

   exit 1

fi

find_helper() {

   explanation="$1"

   shift

   tried="$*"

   while [ "$1" ]

   do

      found=`find_program "$1"`

      if [ "$found" ]

      then

         echo "$1 found at $found"

         HELPER=$1

         return

      fi

      shift

   done

   echo "Could not find a $explanation. Tried: $tried."

   echo "Make sure one of them is installed and available in your PATH."

   exit 1

}

# Write config

echo "Writing configuration..."

echo

cat <<EOF > config.unix

# This file was automatically generated by the configure script.

# Run "./configure --help" for details.

PREFIX=$PREFIX

SYSCONFDIR=$SYSCONFDIR

DATADIR=$DATADIR

LUA_SUFFIX=$LUA_SUFFIX

LUA_DIR=$LUA_DIR

LUA_INCDIR=$LUA_INCDIR

LUA_LIBDIR=$LUA_LIBDIR

LUA_BINDIR=$LUA_BINDIR

REQUIRE_CONFIG=$REQUIRE_CONFIG

IDN_LIB=$IDN_LIB

IDNA_LIBS=$IDNA_LIBS

OPENSSL_LIB=$OPENSSL_LIB

CFLAGS=$CFLAGS

LDFLAGS=$LDFLAGS

CC=$CC

CXX=$CXX

LD=$LD

RUNWITH=$RUNWITH

EXCERTS=$EXCERTS

EOF

echo "Installation prefix: $PREFIX"

echo "Prosody configuration directory: $SYSCONFDIR"

echo "Using Lua from: $LUA_DIR"

make clean > /dev/null 2> /dev/null

echo

echo "Done. You can now run 'make' to build."

echo