Thread: studies about newer libglib on fremantle
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AapoRantalainen is offline AapoRantalainen
2012-01-24 , 22:17
Posts: 839 | Thanked: 3,386 times | Joined on Mar 2009
#1
GLib is 'software utility library'. Read more: https://en.wikipedia.org/wiki/GLib
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On Fremantle we have
Code:
apt-cache policy libglib2.0-0
Installed: 2.20.3-1maemo5+0m5
which is pretty old (e.g. current Ubuntu is using 2.30.0-0ubuntu4)

There are applications which can't be (easily) compiled/ported to N900, because they use newer glib than we have.

GLib is open source, and every Maemo modifications can be put on newer version. But programs compiled against old version won't work with newer version (who confirms is this true with every programs?), but they must be recompiled. So, hard part will be closed parts of Fremantle. According to this list http://wiki.maemo.org/Fremantle_closed_packages there are 355 packages.

I put them to the sorted list, each name on own row -> closed_fremantle.txt

On the phone:
Code:
#list of packages using glib
apt-cache showpkg libglib2.0-0 | uniq | tail -n +9 | head -n -5 | sed 's/,.*//' | sort | uniq | sed 's/  //' > glib_dependant.txt
#merge lists (and sort)
cat closed_fremantle.txt glib_dependant.txt | sort > merged_sorted.txt
#drop duplicates
uniq merged_sorted.txt > merged_uniq.txt
#check difference (dropped duplicates)
diff merged_uniq.txt merged_sorted.txt | grep ">" | nl

     1  > adobe-flashplayer
     2  > alsa-policy-enforcement
     3  > applet-datetime
     4  > as-config-applet-0
     5  > as-daemon-0
     6  > as-utils
     7  > browser-neteal
     8  > calendar
     9  > calendar-home-applet
    10  > calendar-ui
    11  > camel-as-provider-0
    12  > camelisync
    13  > camera-ui
    14  > cherry
    15  > clockd
    16  > clock-ui
    17  > connui-btsettings
    18  > connui-cellular-settings
    19  > connui-conndlgs
    20  > connui-conndlgs-bluetooth
    21  > connui-conndlgs-cellular
    22  > connui-conndlgs-wlan
    23  > connui-home-cellular
    24  > connui-iapsettings
    25  > connui-iapsettings-gprs
    26  > connui-iapsettings-wlan
    27  > connui-statusbar-bluetooth
    28  > connui-statusbar-cellular
    29  > connui-statusbar-internet
    30  > evolution-data-server-addressbook-backend-sim
    31  > fmtx-middleware
    32  > google-search-widget
    33  > gprs-provisioning
    34  > gst-nokia-wm
    35  > gstreamer0.10-dsp
    36  > gstreamer0.10-ipp-nokia
    37  > gstreamer0.10-nokia-speech
    38  > gstreamer0.10-wma
    39  > hald-addon-bme
    40  > hildon-control-panel-personalisation
    41  > hildon-im-common-virtual-settings
    42  > hildon-im-fkb
    43  > hildon-im-keyboard-assistant
    44  > hildon-im-keyboard-assistant-scv
    45  > hildon-input-method-configurator
    46  > hildon-plugins-notify-sv
    47  > hildon-startup-progress
    48  > hildon-status-bar-usb
    49  > icd2
    50  > imageviewer
    51  > libaccounts0
    52  > libaccounts-glade
    53  > libas-common-ui-0
    54  > libas-common-utils-0
    55  > libcityinfo0-0
    56  > libclockcore0-0
    57  > libcodelockui1
    58  > libconbtui0
    59  > libconnui
    60  > libconnui-cellular
    61  > libcumulus0
    62  > libdevlock1
    63  > libdevlock-bin
    64  > libdres0
    65  > libgpx0
    66  > libhildon-im-vkbrenderer3
    67  > libhildon-time-zone-chooser0-0
    68  > libi18n0
    69  > libi18n-locale-resolver0
    70  > libicd2
    71  > libicd-network-gprs
    72  > libimengines4
    73  > libimengines-wp4
    74  > libimlayouts0
    75  > libisi-glib0
    76  > liblas1
    77  > liblocation0
    78  > liblomesa0
    79  > libmaemosec-certman0
    80  > libmaemosec-certman-applet0
    81  > libmaesync
    82  > libnavigation0
    83  > libomap3cam
    84  > libosso-abook
    85  > libprolog0
    86  > librtcom-accounts-ui-client0
    87  > librtcom-accounts-widgets0
    88  > librtcom-call-ui0
    89  > libsharing0
    90  > libsignon-glib0
    91  > libssoautologin
    92  > libtopos0
    93  > location-control
    94  > location-daemon
    95  > location-home-applet
    96  > location-proxy
    97  > location-status
    98  > location-ui
    99  > maemo-applet-fmtx
   100  > maemo-applet-profiles
   101  > maemo-applet-tvout
   102  > maemo-input-sounds
   103  > maemo-installer-utils
   104  > maemosec-certman-applet
   105  > maemosec-certman-tools
   106  > maemo-statusmenu-fmtx
   107  > maemo-statusmenu-headset
   108  > maemo-statusmenu-volume
   109  > maesync-backend
   110  > maesync-controller
   111  > mce
   112  > mediaplayer
   113  > mediaplayerhomeapplet
   114  > mediaplayer-restore
   115  > modest-as-plugin-0
   116  > modest-home-applet
   117  > modest-nokiamessaging-plugin
   118  > mp-fremantle-generic-pr
   119  > nokia-maps-core
   120  > nokiamaps-navigation-provider
   121  > nokiamessaging
   122  > ohm-plugin-prolog
   123  > ohm-plugin-resolver
   124  > ohm-plugins-misc
   125  > osso-abook-home-applet
   126  > osso-accounts-plugin-skype
   127  > osso-addressbook
   128  > osso-applet-device
   129  > osso-applet-devicelock
   130  > osso-applet-display
   131  > osso-applet-languageregional
   132  > osso-applet-memory
   133  > osso-applet-notificationlight
   134  > osso-applet-textinput
   135  > osso-backup
   136  > osso-bookmark-engine
   137  > osso-calculator-ui
   138  > osso-filemanager-ui
   139  > osso-maesync-plugin
   140  > osso-maesync-ui
   141  > osso-mission-control
   142  > osso-notes
   143  > osso-sketch
   144  > osso-startup-wizard
   145  > osso-systemui
   146  > osso-systemui-actingdead
   147  > osso-systemui-alarm
   148  > osso-systemui-devlock
   149  > osso-systemui-emergency
   150  > osso-systemui-modechange
   151  > osso-systemui-powerkeymenu
   152  > osso-systemui-splashscreen
   153  > osso-systemui-tklock
   154  > osso-wlan-security
   155  > ota-settings
   156  > ovi-promotion-widget
   157  > profiled
   158  > prolog-extensions
   159  > rtcom-abook-skype-plugin
   160  > rtcom-accounts-plugin-gtalk
   161  > rtcom-accounts-plugin-jabber
   162  > rtcom-accounts-plugin-nokiachat
   163  > rtcom-accounts-plugin-sip
   164  > rtcom-accounts-ui
   165  > rtcom-call-ui
   166  > rtcom-messaging-ui
   167  > rtcom-notification-ui
   168  > rtcom-presence-ui
   169  > sharing-account-manager
   170  > sharing-dialog
   171  > sharing-manager
   172  > sharing-rtcom
   173  > sharing-service-flickr
   174  > sharing-service-ovi
   175  > signond0
   176  > skyhost-vengine
   177  > sms-manager
   178  > status-area-applet-activesync-0
   179  > status-area-applet-battery
   180  > statusbar-alarm
   181  > status-menu-applet-profiles
   182  > sysinfod
   183  > sysinfo-tool
   184  > tablet-bookmark-manager
   185  > tablet-browser-controls
   186  > tablet-browser-daemon
   187  > tablet-browser-default-plugin
   188  > tablet-browser-dialogs
   189  > tablet-browser-mediaplayer-plugin
   190  > tablet-browser-ui
   191  > tablet-browser-view
   192  > tablet-browser-widgets
   193  > telepathy-ring
   194  > telepathy-spirit
   195  > tone-generator
   196  > tutorial-home-applet
   197  > wappushd
This is list of packages which prevent us to use newer libglib. Some of them can be replaced with open alternative, some are useless (and with luck(?) some will work against different version of glib).

When we have truly open Maemo5, this will happen, but it not seems short term plan.
------------------------
Another approach could be use parallel versions of glib, as far as I know, nobody have done this and it might be impossible. I once started 'rebranding' glib-2.26 to the new name, so package can be made and installed parallel, but it never really worked:
https://gitorious.org/clutter-for-maemo/glib-226

Even program X is compiled against new version, X can also use library Y, which is compiled against old version -> crash!
----------------
Third approach is make own glib which contains everything from old and new glib and programs compiled against either will work with it. (This approach is called "backport new features from new to the old"). It is possible there are modifications which can't exists in the same time. This will need (deep) knowledge about glib.
-----------------
GLib is licensed under LGPL, so it is legal to take (part of) it and bundle (compile statically) it inside GPL applications. Generally speaking statically linking is stupid (as we have so good dynamic linking), but could this work? Could this be automatic (=transparency to developer and user)?
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Anything else?
 

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