--- libtorrent-rasterbar-0.14.6/configure.in.wiget	2009-11-14 13:39:06.000000000 +0100
+++ libtorrent-rasterbar-0.14.6/configure.in	2009-11-14 13:44:58.000000000 +0100
@@ -185,7 +185,7 @@ AC_ARG_WITH(
 # this works around a bug in asio in boost-1.39
 # see: https://svn.boost.org/trac/boost/ticket/3095
 AC_DEFINE(BOOST_ASIO_HASH_MAP_BUCKETS,1021,)
-COMPILETIME_OPTIONS+="-DBOOST_ASIO_HASH_MAP_BUCKETS=1021 "
+COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DBOOST_ASIO_HASH_MAP_BUCKETS=1021 "
 
 dnl Check the value for the --with-logging switch
 AC_MSG_CHECKING([what form of logging to use])
@@ -196,12 +196,12 @@ case "$logging" in
 	"default")
 		AC_MSG_RESULT(default)
 		AC_DEFINE(TORRENT_LOGGING,,[define to use some logging])
-		COMPILETIME_OPTIONS+="-DTORRENT_LOGGING "
+		COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_LOGGING "
 		;;
 	"verbose")
 		AC_MSG_RESULT(verbose)
 		AC_DEFINE(TORRENT_VERBOSE_LOGGING,,[define to use verbose logging])
-		COMPILETIME_OPTIONS+="-DTORRENT_VERBOSE_LOGGING "
+		COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_VERBOSE_LOGGING "
 		;;
 	*)
 		AC_MSG_RESULT()
@@ -225,12 +225,12 @@ case "$dht" in
 	"off")
 		AC_MSG_RESULT(off)
 		AC_DEFINE(TORRENT_DISABLE_DHT,,[define not to use DHT support])
-		COMPILETIME_OPTIONS+="-DTORRENT_DISABLE_DHT "
+		COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_DISABLE_DHT "
 		;;
 	"logging")
 		AC_MSG_RESULT(logging)
 		AC_DEFINE(TORRENT_DHT_VERBOSE_LOGGING,,[define to use DHT support with extra logging])
-		COMPILETIME_OPTIONS+="-DTORRENT_DHT_VERBOSE_LOGGING "
+		COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_DHT_VERBOSE_LOGGING "
 		;;
 	*)
 		AC_MSG_RESULT()
@@ -254,13 +254,13 @@ case "$encryption" in
                AC_MSG_RESULT(on)
                CHECK_SSL()
                AC_DEFINE(TORRENT_USE_OPENSSL,,[define to use openssl with libtorrent-rasterbar])
-               COMPILETIME_OPTIONS+="-DTORRENT_USE_OPENSSL "
+               COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_USE_OPENSSL "
 
                ;;
        "off")
                AC_MSG_RESULT(off)
                AC_DEFINE(TORRENT_DISABLE_ENCRYPTION,,[define not to use encryption support])
-               COMPILETIME_OPTIONS+="-DTORRENT_DISABLE_ENCRYPTION "
+               COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_DISABLE_ENCRYPTION "
                ;;
        *)
                AC_MSG_RESULT()
@@ -476,11 +476,11 @@ esac
 dnl Set some defines if we are building a shared library
 if [[ "x$enable_shared" == "xyes" ]]; then
 	AC_DEFINE(TORRENT_BUILDING_SHARED,,[Make sure the functions and classes are exported.])
-	COMPILETIME_OPTIONS+="-DTORRENT_LINKING_SHARED "
+	COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_LINKING_SHARED "
 fi
 
 AC_DEFINE(BOOST_EXCEPTION_DISABLE,,[We do not need boost.exception features])
-COMPILETIME_OPTIONS+="-DBOOST_EXCEPTION_DISABLE "
+COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DBOOST_EXCEPTION_DISABLE "
 
 dnl want some debugging symbols with that?
 AC_ARG_ENABLE(
@@ -490,11 +490,11 @@ AC_ARG_ENABLE(
 		no)
 			AC_DEFINE(NDEBUG,,[Define to disable debugging])
 			DEBUGFLAGS="-Os"
-#			COMPILETIME_OPTIONS+="-DNDEBUG "
+#			COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DNDEBUG "
 			;;
 		yes)
 			DEBUGFLAGS="-g"
-			COMPILETIME_OPTIONS+="-DTORRENT_DEBUG "
+			COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DTORRENT_DEBUG "
 			AC_DEFINE(TORRENT_DEBUG,,[Define to enable libtorrent debug build])
 			;;
 		*)
@@ -504,7 +504,7 @@ AC_ARG_ENABLE(
 	esac],
 	[DEBUGFLAGS="-Os"
 	AC_DEFINE(NDEBUG,,[Define to disable debugging])
-#	COMPILETIME_OPTIONS+="-DNDEBUG "
+#	COMPILETIME_OPTIONS="${COMPILETIME_OPTIONS} -DNDEBUG "
 	]
 )
 AC_SUBST(DEBUGFLAGS)