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leetle-hildon-1chinook-migration-things.md (2015B)

      1 # Leetle hildon-1/chinook migration things
      2 
      3  Most of "my" applications are now chinook ready, at least in the svn. However, I prefer to keep them compatible with mistral and bora, so I need to do little quirks. Let's investigate osso-xterm's modifications for example.
      4 
      5  What was previously known as hildon-libs, is now hildon-1, so we need to tell configure.ac about this. Before the change, I had:
      6 
      7 <div class="p">
      8  <pre>
      9 PKG_CHECK_MODULES(HILDON, hildon-libs >= 0.12.0)
     10 AC_SUBST(HILDON_CFLAGS)
     11 AC_SUBST(HILDON_LIBS)
     12  </pre>
     13 </div>
     14 
     15  Now, as we need to also check for hildon-1, and due to the fact that we need to know it in source as the include paths have changed, it goes like this:
     16 
     17 <div class="p">
     18  <pre>
     19 PKG_CHECK_MODULES(HILDON, hildon-1 >= 0.9.9, \
     20                   AC_DEFINE(HILDON, 1, [Version of hildon libraries]), \
     21                   [AC_DEFINE(HILDON, 0, [Version of hildon libraries]) \
     22                   PKG_CHECK_MODULES(HILDON_LIBS, hildon-libs >= 0.12.0)])
     23 AC_SUBST(HILDON_CFLAGS)
     24 AC_SUBST(HILDON_LIBS)
     25  </pre>
     26 </div>
     27 
     28  In code, I do the following:
     29 
     30 <div class="p">
     31  <pre>
     32 #ifdef HAVE_CONFIG_H
     33 # include <config.h>
     34 #endif
     35 #if HILDON == 1
     36 # include <hildon/hildon-window.h>
     37 #else
     38 # include <hildon-widgets/hildon-window.h>
     39 #endif
     40  </pre>
     41 </div>
     42 
     43  There are also some real changes, but with this I get to compile stuff and get warnings/errors for the other stuff that has changed. Those I've, again, separated with #if HILDON == 1.
     44 
     45   For projects that don't use autotools, I use this kind of stuff:
     46 
     47 <div class="p">
     48  <pre>
     49 mh_shot_tool_CFLAGS += $(shell if pkg-config hildon-1 --exists; then \
     50          pkg-config hildon-1 --cflags; echo -DHILDON=1; \
     51          elif pkg-config hildon-libs --exists; then \
     52          pkg-config hildon-libs --cflags; echo -DHILDON=0; \
     53          else pkg-config gtk+-2.0 --cflags; fi)
     54  </pre>
     55 </div>
     56 
     57  **Edit:** thanks to Loïc for pointing out, the AC_SUBSTs aren't actually needed, PKG_CHECK_MODULES already does that. You may omit them and it will still work.