--- /dev/null
+diff -up devhelp-0.19.1/configure.in.xulrunner devhelp-0.19.1/configure.in
+--- devhelp-0.19.1/configure.in.xulrunner 2008-05-25 12:56:13.000000000 -0400
++++ devhelp-0.19.1/configure.in 2008-05-26 12:18:07.000000000 -0400
+@@ -73,6 +73,7 @@ AC_SUBST([GECKO_INCLUDE_ROOT])
+ AC_SUBST([GECKO_HOME])
+ AC_SUBST([GECKO_PREFIX])
+ AC_SUBST([GECKO_EXTRA_LIBS])
++AC_SUBST([GECKO_XPCOM])
+
+ case "$GECKO" in
+ mozilla) gecko_min_version=1.7 ;;
+@@ -80,9 +81,10 @@ seamonkey) gecko_min_version=1.0 ;;
+ *firefox) gecko_min_version=1.0 ;;
+ *thunderbird) gecko_min_version=1.0 ;;
+ xulrunner) gecko_min_version=1.8 ;;
++libxul*) gecko_min_version=1.9 ;;
+ esac
+
+-PKG_CHECK_MODULES([GECKO],[$GECKO_EXTRA_PKG_DEPENDENCIES $GECKO-xpcom >= $gecko_min_version])
++PKG_CHECK_MODULES([GECKO],[$GECKO_EXTRA_PKG_DEPENDENCIES $GECKO_XPCOM >= $gecko_min_version])
+ AC_SUBST([GECKO_CFLAGS])
+ AC_SUBST([GECKO_LIBS])
+
+diff -up devhelp-0.19.1/m4/gecko.m4.xulrunner devhelp-0.19.1/m4/gecko.m4
+--- devhelp-0.19.1/m4/gecko.m4.xulrunner 2008-05-25 12:55:36.000000000 -0400
++++ devhelp-0.19.1/m4/gecko.m4 2008-05-26 12:18:07.000000000 -0400
+@@ -51,22 +51,32 @@ AC_PROG_AWK
+ AC_MSG_CHECKING([which gecko to use])
+
+ AC_ARG_WITH([gecko],
+- AS_HELP_STRING([--with-gecko@<:@=mozilla|firefox|seamonkey|xulrunner@:>@],
++ AS_HELP_STRING([--with-gecko@<:@=mozilla|firefox|seamonkey|xulrunner|libxul@:>@],
+ [Which gecko engine to use (autodetected by default)]))
+
+ # Backward compat
+ AC_ARG_WITH([mozilla],[],[with_gecko=$withval],[])
+
+ gecko_cv_gecko=$with_gecko
++if $PKG_CONFIG --exists $with_gecko-xpcom; then
++ gecko_cv_gecko_xpcom=$with_gecko-xpcom
++else
++ gecko_cv_gecko_xpcom=$with_gecko
++fi
+
+ # Autodetect gecko
+-_geckos="xulrunner firefox mozilla-firefox seamonkey mozilla"
++_geckos="xulrunner firefox mozilla-firefox seamonkey mozilla libxul"
+ if test -z "$gecko_cv_gecko"; then
+ for lizard in $_geckos; do
+ if $PKG_CONFIG --exists $lizard-xpcom; then
+ gecko_cv_gecko=$lizard
++ gecko_cv_gecko_xpcom=$lizard-xpcom
+ break;
+- fi
++ elif $PKG_CONFIG --exists $lizard; then
++ gecko_cv_gecko=$lizard
++ gecko_cv_gecko_xpcom=$lizard
++ break;
++ fi
+ done
+ fi
+
+@@ -93,12 +103,13 @@ mozilla) gecko_cv_gecko_flavour=mozilla
+ seamonkey) gecko_cv_gecko_flavour=mozilla ;;
+ *firefox) gecko_cv_gecko_flavour=toolkit ;;
+ xulrunner) gecko_cv_gecko_flavour=toolkit ;;
++libxul*) gecko_cv_gecko_flavour=toolkit ;;
+ esac
+
+-_GECKO_INCLUDE_ROOT="`$PKG_CONFIG --variable=includedir ${gecko_cv_gecko}-xpcom`"
+-_GECKO_LIBDIR="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko}-xpcom`"
+-_GECKO_HOME="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko}-xpcom`"
+-_GECKO_PREFIX="`$PKG_CONFIG --variable=prefix ${gecko_cv_gecko}-xpcom`"
++_GECKO_INCLUDE_ROOT="`$PKG_CONFIG --variable=includedir ${gecko_cv_gecko_xpcom}`"
++_GECKO_LIBDIR="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko_xpcom}`"
++_GECKO_HOME="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko_xpcom}`"
++_GECKO_PREFIX="`$PKG_CONFIG --variable=prefix ${gecko_cv_gecko_xpcom}`"
+
+ fi # if gecko_cv_have_gecko
+
+@@ -114,6 +125,7 @@ $1[]_INCLUDE_ROOT=$_GECKO_INCLUDE_ROOT
+ $1[]_LIBDIR=$_GECKO_LIBDIR
+ $1[]_HOME=$_GECKO_HOME
+ $1[]_PREFIX=$_GECKO_PREFIX
++$1[]_XPCOM=$gecko_cv_gecko_xpcom
+
+ # **************************************************************
+ # This is really gcc-only
+@@ -359,10 +371,10 @@ _SAVE_CPPFLAGS="$CPPFLAGS"
+ _SAVE_CXXFLAGS="$CXXFLAGS"
+ _SAVE_LDFLAGS="$LDFLAGS"
+ _SAVE_LIBS="$LIBS"
+-CPPFLAGS="$CPPFLAGS $_GECKO_EXTRA_CPPFLAGS -I$_GECKO_INCLUDE_ROOT $($PKG_CONFIG --cflags-only-I ${gecko_cv_gecko}-xpcom)"
+-CXXFLAGS="$CXXFLAGS $_GECKO_EXTRA_CXXFLAGS $($PKG_CONFIG --cflags-only-other ${gecko_cv_gecko}-xpcom)"
++CPPFLAGS="$CPPFLAGS $_GECKO_EXTRA_CPPFLAGS -I$_GECKO_INCLUDE_ROOT $($PKG_CONFIG --cflags-only-I ${gecko_cv_gecko_xpcom})"
++CXXFLAGS="$CXXFLAGS $_GECKO_EXTRA_CXXFLAGS $($PKG_CONFIG --cflags-only-other ${gecko_cv_gecko_xpcom})"
+ LDFLAGS="$LDFLAGS $_GECKO_EXTRA_LDFLAGS -Wl,--rpath=$_GECKO_HOME"
+-LIBS="$LIBS $($PKG_CONFIG --libs ${gecko_cv_gecko}-xpcom)"
++LIBS="$LIBS $($PKG_CONFIG --libs ${gecko_cv_gecko_xpcom})"
+
+ _GECKO_DISPATCH_INCLUDEDIRS="$2"
+
+@@ -595,11 +607,11 @@ fi
+ AC_DEFUN([GECKO_XPIDL],
+ [AC_REQUIRE([GECKO_INIT])dnl
+
+-_GECKO_LIBDIR="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko}-xpcom`"
++_GECKO_LIBDIR="`$PKG_CONFIG --variable=libdir ${gecko_cv_gecko_xpcom}`"
+
+ AC_PATH_PROG([XPIDL],[xpidl],[no],[$_GECKO_LIBDIR:$PATH])
+
+-XPIDL_IDLDIR="`$PKG_CONFIG --variable=idldir ${gecko_cv_gecko}-xpcom`"
++XPIDL_IDLDIR="`$PKG_CONFIG --variable=idldir ${gecko_cv_gecko_xpcom}`"
+
+ # Older geckos don't have this variable, see
+ # https://bugzilla.mozilla.org/show_bug.cgi?id=240473