It is useful to know that the default location for C header files is in /usr/include. Inside this directory we have another directory hildon-1 and inside this directory we have hildon, so the full path to the hildon header files is:

/usr/include/hildon-1/hildon

First modify the file configure.ac Around line 42 add the line:

AC_ARG_ENABLE(hildon, AS_HELP_STRING([--enable-hildon],[compile for Hildon environment @<:@default=no@:>@]),,enable_hildon=no)

and then on lines 212 - 225 add:

dnl ******** 
dnl Hildon
dnl ********
 
if test "x$enable_hildon" = "xyes"; then
   dnl AC_MSG_CHECKING([for GtkHTML2 support])
   PKG_CHECK_MODULES([HILDON], hildon-1 >= 1.0.5,enable_hildon=yes,enable_hildon=no)
else
   enable_hildon=no
fi


AM_CONDITIONAL(WITH_HILDON, test "x$enable_hildon" = "xyes")

and then finally on line 548 echo the information back so that there is visual confirmation to the user that Hildon is enabled:

echo "Build Hildon support............ : $enable_hildon"

these changes enable the passing of the argument --enable-hildon on the command line like:

./configure --enable-hildon

After making these changes run autoreconf: user@machine:~/Dev/Ume/liferea-1.4.2b$ autoreconf

This step is necessary because autoreconf runs autoconf, autoheader, aclocal, automake, libtoolize, and autopoint (when appropriate) to update the Build System in the specified directories and their subdirectories. In other words it registers the changes made to configure.ac

It is not necessary for this application but other changes that can be made to configure.ac include: Hildon File Management The new hildon file manager is now called hildon-fm-2, so in configure.ac, if there is the following line it should be updated. PKG_CHECK_MODULES(..., [hildon-fm]) --> PKG_CHECK_MODULES(..., [hildon-fm-2]) Hildon Help The new hildon help is changing from libossohelp to hildon-help, so in configure.ac, if there is the following line it should be updated. PKG_CHECK_MODULES(..., [libossohelp]) --> PKG_CHECK_MODULES(..., [hildon-help])

Next change Makefile.am This is located in the liferea-1.4.2b/srcdirectory. On line 67 add the Hildon libraries $(HILDON_LIBS)to liferea_bin_LDADD

liferea_bin_LDADD =  net/liblinet.a \ 
                        parsers/libliparsers.a \
                        fl_sources/libliflsources.a \
                        notification/liblinotification.a \
                        ui/libliui.a \
                        $(PACKAGE_LIBS) $(X_LIBS) $(X_PRE_LIBS) -lX11 $(X_EXTRA_LIBS) $(DBUS_LIBS) $(NM_LIBS) $(INTLLIBS) $(GNUTLS_LIBS) $(HILDON_LIBS)

this enables liferea to link against the Hildon libraries.

Next change the Makefile.am inside the liferea-1.4.2b/src/ui directory. On line 11 add: libliui_a_CFLAGS = $(PACKAGE_CFLAGS) $(DBUS_CFLAGS) $(HILDON_CFLAGS)

this passes the $(HILDON_CFLAGS)to the compiler

These are all the changes needed to be made to autotools. Next copy the liferea.glade file which is in the root liferea-1.4.2b directory and rename it to liferea_hildon.glade This means that if the --enable-hildon flag is passed at compile time the liferea_hildon.glade file is used and if not liferea.glade is used.

Here are the differences between the two files:

user@machine:/home/user/liferea-1.4.2b$ diff -Nu liferea.glade liferea_hildon.glade  
--- liferea.glade       2007-08-19 13:56:50.000000000 -0400
+++ liferea_hildon.glade        2007-09-25 14:17:38.000000000 -0400
@@ -2,11 +2,8 @@
 <!DOCTYPE glade-interface SYSTEM "glade-2.0.dtd">
 <!--*- mode: xml -*-->
 <glade-interface>
-  <widget class="GtkWindow" id="mainwindow">
-    <property name="title" translatable="yes">Liferea</property>
-    <property name="default_width">640</property>
-    <property name="default_height">480</property>
-    <property name="icon_name">liferea</property>
+  <widget class="GtkVBox" id="mainwindow">
+    <property name="visible">True</property>
     <child>
       <widget class="GtkVBox" id="vbox1">
         <property name="visible">True</property>

In short the mainwindow is a GtkVBoxin the hildon version and a GtkWindownormally. This change is explained in this tutorial in the section 'Hildonizing Main View'

Now liferea needs to know to pull in the appropriate glade file depending on whether it is compiled for hildon or not.

In the file liferea-1.4.2b/src/ui/ui_shell.cinside the function static void liferea_shell_init (LifereaShell *ls)line 113 now looks like:

#ifdef MAEMO_CHANGES 
        ls->priv->xml = glade_xml_new (PACKAGE_DATA_DIR G_DIR_SEPARATOR_S PACKAGE G_DIR_SEPARATOR_S "liferea_hildon.glade", "mainwindow", GETTEXT_PACKAGE);
#else
        ls->priv->xml = glade_xml_new (PACKAGE_DATA_DIR G_DIR_SEPARATOR_S PACKAGE G_DIR_SEPARATOR_S "liferea.glade", "mainwindow", GETTEXT_PACKAGE);
#endif

Also the file liferea-1.4.2b/src/ui/ui_dialog.cinside the function GtkWidget *liferea_dialog_new (const gchar *filename, const gchar *name)line 139 now looks like:

#ifdef MAEMO_CHANGES 
                ld->priv->xml = glade_xml_new (PACKAGE_DATA_DIR G_DIR_SEPARATOR_S PACKAGE G_DIR_SEPARATOR_S "liferea_hildon.glade", name, GETTEXT_PACKAGE);
#else
                ld->priv->xml = glade_xml_new (PACKAGE_DATA_DIR G_DIR_SEPARATOR_S PACKAGE G_DIR_SEPARATOR_S "liferea.glade", name, GETTEXT_PACKAGE);
#endif

All the other changes to Liferea are in liferea-1.4.2b/src/ui/ui_mainwindow.c

On line 34 add the header file include:

#ifdef MAEMO_CHANGES 
#  include <hildon/hildon-program.h>
#endif

On line 66 in the function static struct mainwindowcreate the HildonProgramstructure like:

#ifdef MAEMO_CHANGES 
        HildonProgram   *program;
        GtkWidget       *container;
        GtkWidget       *window;
#else
        GtkWindow       *window;
#endif

On line 536 in the function static struct mainwindow *ui_mainwindow_new(void)make an instance of a HildonProgramlike:

#ifdef MAEMO_CHANGES 
        mw->program = HILDON_PROGRAM(hildon_program_get_instance());
        mw->container = window;
        mw->window = hildon_window_new();
        gtk_container_add(GTK_CONTAINER(mw->window), GTK_WIDGET(mw->container));
        hildon_program_add_window(mw->program, HILDON_WINDOW(mw->window));
#else
        mw->window = GTK_WINDOW (window);
#endif

Also the maemo tutorial mentioned above notes 'Also remove functions accel_set_func and accel_edited_callback' so on line 1255 add:

#ifndef MAEMO_CHANGES         
        accel_group = gtk_ui_manager_get_accel_group (ui_manager);
        gtk_window_add_accel_group (mw->window, accel_group);
#endif

#ifdef MAEMO_CHANGES 
        GtkWidget *main_menu;
        GList *iter;


        /* Create new main menu */
        main_menu = gtk_menu_new();


        iter = gtk_container_get_children (GTK_CONTAINER (mw->menubar));
        while (iter) {
                GtkWidget *menu;


                menu = GTK_WIDGET (iter->data);
                gtk_widget_reparent(menu, main_menu);


                iter = g_list_next (iter);
        }


        hildon_window_set_menu(HILDON_WINDOW(mw->window), GTK_MENU(main_menu));
#endif

./configure --enable-hildon --prefix=/usr/ --libdir=/usr/lib 
make
make install

export DISPLAY=:2 
 liferea