Kai Kaminski: Cells-Gtk

Cells GTK

Using cells-gtk on OS X

I successfully ran the cells-gtk demo (shot 1, shot 2)i ncluding libcellsgtk functionality on SBCL 0.9.12 and Mac OS X 10.3 Panther after taking a few minor hurdles. I installed GTK2 using Fink.

Set the environment variable DYLD_LIBRARY_PATH to /sw/lib/ by changing ~/.MacOSX/environment.plist and logging out and back in again:
```
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
 "[[http://www.apple.com/DTDs/PropertyList-1.0.dtd"]]>
<plist version="1.0">
  <dict>
    <key>DYLD_LIBRARY_PATH</key>
    <string>/sw/lib/</string>
  </dict>
</plist>
```
While you're at it you may just as well set DISPLAY there.

At the moment cells-gtk tries to load the wrong libraries. To correct this, change the foreign library definitions in gtk-ffi.lisp along these lines:
```
(cffi:define-foreign-library :gobject
  (cffi-features:darwin "libgobject-2.0.0.dylib")
  (cffi-features:unix "libgobject-2.0.so")
  (cffi-features:windows "libgobject-2.0-0.dll"))
```
The order of the cffi-features is important, since OS X is also a unix and most (all?) Lisp implementations have :UNIX in their *FEATURES*.
To compile libcellsgtk install the development versions of the GTK2 libs (including the dependencies) or download mine. The Fink packages you need to compile this library yourself are
```
atk1                1.6.1-3
glib2-dev           2.4.6-6
gtk+2-dev           2.4.9-8
libiconv-dev        1.9.1-11
pango1-xft2-dev     1.6.0-1
pkgconfig           0.15.0-2
```
Plus everything else that fink install gtk+2-dev might install. The package atk1-shlibs is not enough!

Finally you need to modify the files GTK-ADDS.C and Makefile in the GTK-FFI sub-directory. In the former change the line
```
asm (".section .drectve");
```
to
```
asm (".section .drectve,");
```
and in the latter change
```
gcc -shared -o libcellsgtk.so gtk-adds.o `pkg-config --cflags --libs gtk+-2.0`
```
to
```
gcc -dynamiclib -o libcellsgtk.so gtk-adds.o `pkg-config --cflags --libs gtk+-2.0`
```
Now a simple make should do the right thing.

Now everything should work. If GTK-INIT-CHECK fails, make sure that your X11 server is running and that DISPLAY is set correctly.

OpenMCL can't currently load cells-gtk due to FFI problems.

Author: Kai Kaminski <kai.kaminski@gmx.de>

Date: 2006/08/29 10:14:55