post-release 03: combined build-fixes

The release-branch tracks the latest release with applicable bugfixes;
after completing the release process, all fixes are merged back to mainline.

admin/scons/Platform.py

@@ -56,7 +56,7 @@ def configure(env):
         conf.env.Append(CPPFLAGS = ' -DHAVE_PTHREAD')
         conf.env.Append(CCFLAGS = ' -pthread')
     
-    if not conf.CheckLib(symbol='clock_gettime', library='rt'):
+    if not conf.CheckLib(symbol='clock_gettime', library='rt'):  # note librt is usually installed with libc6
         problems.append('We expect the POSIX realtime extensions to be available through librt. ' +
                         'Unable to use clock_gettime()')
     
@@ -100,7 +100,7 @@ def configure(env):
             problems.append('We need the boost regular expression lib (incl. binary lib for linking).')
     
     
-    if not conf.CheckPkgConfig('gavl', 1.0):
+    if not conf.CheckPkgConfig('gavl', '1.4'):
         problems.append('Did not find Gmerlin Audio Video Lib [http://gmerlin.sourceforge.net/gavl.html].')
     else:
         conf.env.mergeConf('gavl')
@@ -108,19 +108,22 @@ def configure(env):
     if not conf.CheckPkgConfig('alsa', '1.0.23'):
         problems.append('Support for ALSA sound output is required')
     
-    if not conf.CheckPkgConfig('gtkmm-3.0', 3.0):
+    if not conf.CheckPkgConfig('gtkmm-3.0', '3.10'):
-        problems.append('Unable to configure GTK--')
+        problems.append('Unable to configure the mm-bindings for GTK-3')
         
-    if not conf.CheckPkgConfig('glibmm-2.4', '2.16'):
+    if not conf.CheckPkgConfig('glibmm-2.4', '2.39'):
-        problems.append('Unable to configure Lib glib--')
+        problems.append('Unable to configure the mm-bindings for Glib')
     
-    if not conf.CheckPkgConfig('gthread-2.0', '2.12.4'):
+    if not conf.CheckPkgConfig('glib-2.0', '2.40'):
-        problems.append('Need gthread support lib for glib-- based thread handling.')
+        problems.append('Need a suitable Glib version.')
     
-    if not conf.CheckPkgConfig('cairomm-1.0', 0.6):
+    if not conf.CheckPkgConfig('gthread-2.0', '2.40'):
+        problems.append('Need gthread support lib for Glib based thread handling.')
+    
+    if not conf.CheckPkgConfig('cairomm-1.0', '1.10'):
         problems.append('Unable to configure Cairo--')
     
-    verGDL   = '3.8' # NOTE: lowered requriements here (was originally '3.12')
+    verGDL   = '3.8'    # lowered requirements to allow building on Ubuntu/Trusty & Mint (was originally '3.12')
     verGDLmm = '3.7.3'
     urlGDLmm = 'http://ftp.gnome.org/pub/GNOME/sources/gdlmm/'
     urlGDLmmDEB = 'http://lumiera.org/debian/'
@@ -132,12 +135,14 @@ def configure(env):
                         '(either from GNOME %s or use the debian package from %s)' % 
                         (verGDLmm, urlGDLmm, urlGDLmmDEB))
     
-    if not conf.CheckPkgConfig('librsvg-2.0', '2.18.1'):
+    if not conf.CheckPkgConfig('librsvg-2.0', '2.30'):
         problems.append('Need rsvg Library for rendering icons.')
         
     if not conf.CheckCHeader(['X11/Xutil.h', 'X11/Xlib.h'],'<>'):
         problems.append('Xlib.h and Xutil.h required. Please install libx11-dev.')
     
+    # NOTE the following dependencies where for the video displayer widget.
+    # As of 11/2015 this is broken and disabled. Might be obsolete.... 
     if not conf.CheckPkgConfig('xv')  : problems.append('Need libXv...')
     if not conf.CheckPkgConfig('x11') : problems.append('Need X-lib...')   # for the xvdisplayer widget
     if not conf.CheckPkgConfig('xext'): problems.append('Need libXext.')

admin/scons/Setup.py

@@ -73,7 +73,7 @@ def defineBuildEnvironment():
     
     env.Replace( CPPPATH   =["#src"]    # used to find includes, "#" means always absolute to build-root
                , CPPDEFINES=['LUMIERA_VERSION='+VERSION ]    # note: it's a list to append further defines
-               , CCFLAGS='-Wall -Wextra'
+               , CCFLAGS='-Wall -Wextra -Wformat-security'
                , CXXFLAGS='-std=gnu++14 -Wno-enum-compare'
                , CFLAGS='-std=gnu99' 
                )

doc/technical/build/Dependencies.txt

@@ -21,7 +21,7 @@ Having said that -- for the time being, the core team won't spend much effort on
 Platform
 --------
 We develop and test on standard PC hardware, 32 and 64 bit.
-It is intended to target other platforms running run GNU/Linux eventually.
+It is intended to target other platforms running GNU/Linux eventually.
 Lumiera expects a `standard' desktop installation running a XServer.
 
 Graphics::
@@ -42,6 +42,12 @@ Special Hardware::
 * Specs and APIs must be open.
 * someone to do the actual interfacing and support needs to join the team
 
+Compatibility
+~~~~~~~~~~~~~
+We try to keep our depdendencies close to Debian/stable and the most recent Ubuntu LTS.
+Whenever we need more recent libraries or other dependencies not available for our reference platform,
+we care to provide custom Debian / Ubuntu packages as reference. This does not mean Lumiera is
+limited to Devian flavours, it should work on any current Linux distribution.
 
 Languages and Tools
 -------------------
@@ -86,7 +92,7 @@ Libraries
 * for the GUI: (*GTK-3*) gtkmm-3.0 gdlmm-3.0 glibmm-2.4 cairomm-1.0 xv
  - libgtkmm-3.0-dev
  - libcairomm-1.0-dev
- - libglibmm-2.4-dev, requiring at least glib2.0 and gthread-2.0
+ - libglibmm-2.4-dev, requiring at least glib2.0 (2.40 or better) and gthread-2.0
  - libxv-dev footnote:[for the XV viewer widget `gui/output/xvdisplayer.cpp`
      -- currently obsolete as of [yellow-background]#5/2015#][yellow-background]#TODO 5/2015# and X-lib
  - librsvg-2.0 and librsvg2-dev for rendering Icons

doc/technical/howto/backporting.txt

@@ -1,6 +1,7 @@
 Backporting to older platforms
 ==============================
-:Date: 8/2015
+:Date: 11/2015
+:toc:
 
 GCC-4.9
 -------
@@ -59,4 +60,69 @@ sudo update-alternatives --config gcc
 ---- 
 
 
+Building on Mint 17.2 (Rafaela) -- gcc and Libstdc++ 4.9
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Since Mint is based on Ubuntu LTS, we're facing pretty much the same situation here.
+But what makes matters yet more confusing is the fact, that Mint offers even a Clang-3.6
+package, which is _unfortunately_ built to rely on the gcc-4.8 libraries; there is a known
+header inclusion bug in these libraries, which kicks in as soon as we switch to C++14.
+
+Thus it is _mandatory_ to install the gcc-4.9 from above mentioned Ubuntu-Toolchain PPA,
+which is indeed linked against the 4.9 libraries. Stay away from Clang on Mint for now!
+
+Transcript from a build session on a ``pristine'' Mint 17.2 installation:
+
+ * add the following to your `/etc/apt/sources.list`
++   
+----
+deb http://lumiera.org/debian/ rafaela experimental
+deb-src http://lumiera.org/debian/ rafaela experimental
+----
+
+ * install _Ichthyo's_ DEB signing key
++
+----
+gpg --keyserver keyserver.ubuntu.com --recv A1DE94B2
+gpg --export -a A1DE94B2 | sudo apt-key add -
+----
+
+ * prepare build environment
++
+----
+sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+sudo apt-get update
+sudo apt-get install build-essential gcc-4.9 g++-4.9 git-core
+sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 60 \
+                         --slave /usr/bin/g++ g++ /usr/bin/g++-4.9
+
+sudo apt-get build-dep lumiera
+----
++
+after that, your system is prepared for building Lumiera
+
+ * now build
+
+   * either by (re)compiling the debian package
++
+----
+apt-get source lumiera
+cd lumiera
+dpkg-buildpackage
+----
+
+   * or check out the source and hack away...
++
+----
+git clone git://git.lumiera.org/LUMIERA
+cd LUMIERA
+
+scons CC=gcc-4.9 CXX=g++-4.9
+----
++
+...as usual, from this point on, the compiler setting will be remembered in the file
+`optcache`, so no need to repeat it for subsequent `scons` invocations.
+
+TIP: Just run `scons` for standard build or run the testsuite with `scons check`.
+     Use the switch `-j#` with # corresponding to the number of your cores.
+     Probably you'll need at least 2GB of memory on AMD64, to build with `-j6`
 

doc/technical/infra/Release.txt

@@ -0,0 +1,75 @@
+Release preparation
+===================
+:Author: Ichthyo
+:Date: Nov 2015
+
+we have nothing to show and don't provide public releases yet --
+but we ought to rehearse and practice the release process.
+This document contains some hints and a checklist of steps
+to perform for a proper release.
+
+Steps to perform for a release
+------------------------------
+
+ . release prep: clean-up obsolete information
+
+   - Debian package descriptions
+   - Build-Tutorial
+
+     * building from source
+     * building the debian way
+     * contributing
+
+   - technical/build/Dependencies
+
+ . release prep: bump version number
+
+   - `admin/scons/Setup.py`
+   - `data/config/setup.ini`
+   - `doc/devel/Doxyfile`
+   - `doc/devel/Doxyfile.browse`
+
+ . perform a back-merge from the release branch. +
+   It is relevant not to loose any bugfixes. Especially verify
+
+   - that all ongoing fixes from DEBs and other build activities
+     are properly represented as patches and committed to the release branch
+   - that adjustments to platform dependencies are picked up adequately
+
+ . perform the *Release-commit*:
+   it should mention the kind of the release and the version number.
+   Typically, with this commit, you'll update some top level stuff in the
+   source tree, like
+
+   - `README`
+   - `AUTHORS`
+     
+     * also in the ``about'' box in the GTK-UI
+     * see `setup.ini`
+
+   - check the `LICENSE` file and add new license
+     declarations and notes, clean obsolete info here.
+
+ . update the *release branch*: ``upgrade current release to ##.##'' +
+   Make sure the release branch now really reflects current master, maybe
+   with the omission of some stuff to be kept out of the packages.
+   Set the *release tag*
+
+ . packaging...
+
+   - merge release -> deb
+   - verify the package description
+   - have a look at manpages and similar packaging documents
+   - update `debian/control` to reflect current version dependencies
+   - have a look into `debian/rules` (e.g. build flags and similar)
+
+ . delivery
+
+   - use whatever infrastructure is available to build packages.
+   - verify packages can be installed on a pristine VM
+   - upload packages to debian depot or commit them to PPAs
+   - clean-up and discard obsoleted old distributions and packages
+
+ . close the **release ticket**
+
+

doc/user/tutorials/building.txt

@@ -63,6 +63,11 @@ The GUI depends on the following:
  * link:https://wiki.gnome.org/LibRsvg[lib rSVG]
  * link:https://git.gnome.org/browse/gdl[lib GDL]
 
+CAUTION: there are known problems with *GCC-5.x* as of 11/2015 +
+         on recent distributions (Ubuntu/wily, Debian/stretch) you might
+         encounter failing tests.footnote:[these problems aren't really serious;
+         basically we're sometimes checking mangled class/type names, and seemingly
+         the mangling behaviour of GCC has changed slightly. We're working on that...]
 
 TIP: Generally speaking, when you want to build software, you'll need the
 _development_ version of the packages that contain the headers and pre-built
@@ -79,6 +84,14 @@ libgavl-dev libgtkmm-3.0-dev libgdl-3-dev librsvg2-dev libxv-dev
 Ubuntu note::
   some people reported you need to install the `intltool` package from the standard
   Ubuntu repository (for this reason it is included in the above collection)
+Mint-17.2 (Rafaela) and Ubuntu 12.LTS::
+  we really need the gcc-4.9, so building on these platforms is a bit tricky. See our
+  link:{ldoc}/technical/howto/backporting.html#_building_on_mint_17_2_rafaela_8201_8212_8201_gcc_and_libstdc_4_9[»Backporting«]
+  page for detailed info...
+GCC-5.0::
+  we're aware of some changes in mangled names (or type-IDs), which cause some tests to fail.
+  Other than that, compilation worked for us.
+
 
 
 Build Directory

doc/user/tutorials/contributing.txt

@@ -236,6 +236,7 @@ fact, many user interfaces should be possible.
 - The initial GUI on which considerable work has already been done has been
   implemented using the GTK toolkit.  However, considerable more work needs to be
   done on this present GUI.
+- the stylesheet has been roughly ported to GTK-3, but needs a lot more polishing
 - we urgently need conceptual (non-coding) contributions
 
   * work out a coherent UI handling concept, in accordance with model and core