Problems Installing GtkGLext

[Alex Gutteridge]

Hi,

I'm having problems installing the Ruby bindings for GtkGlExt. I've
installed the latest version of GtkGlExt (v.1.0.6) which seems to have
installed the following libs:

/homes/alexg/lib/libgdkglext-x11-1.0.a
/homes/alexg/lib/libgdkglext-x11-1.0.la
/homes/alexg/lib/libgdkglext-x11-1.0.so
/homes/alexg/lib/libgdkglext-x11-1.0.so.0
/homes/alexg/lib/libgdkglext-x11-1.0.so.0.2.4
/homes/alexg/lib/libgtkglext-x11-1.0.a
/homes/alexg/lib/libgtkglext-x11-1.0.la
/homes/alexg/lib/libgtkglext-x11-1.0.so
/homes/alexg/lib/libgtkglext-x11-1.0.so.0
/homes/alexg/lib/libgtkglext-x11-1.0.so.0.2.4

The GtkGlExt examples all run fine, so this seems to have installed
correctly. However, when I try to configure Ruby/GtkGlExt it says it
can't find gtkglext-1.0:

$ruby extconf.rb
checking for GCC... yes
checking for rb_define_alloc_func()... yes
checking for rb_block_proc()... yes
checking for new allocation framework... yes
checking for attribute assignment... yes
checking for gtkglext-1.0... no

The GtkGlExt libraries seem to call themselves libgtkglext-x11, is
this why extconf can't find them? If so should I rename the libraries,
or patch extconf?

Alex Gutteridge

 

[Geoff Youngs]

I'm having problems installing the Ruby bindings for GtkGlExt. I've
installed the latest version of GtkGlExt (v.1.0.6) which seems to have
installed the following libs:

The GtkGlExt libraries seem to call themselves libgtkglext-x11, is
this why extconf can't find them? If so should I rename the libraries,
or patch extconf?

I'm assuming from the information you provided that you should have a file
called /home/alexg/lib/pkgconfig/gtkglext-1.0.pc

The most likely cause of the problem is that your PKG_CONFIG_PATH
variable isn't set up correctly to find libraries installed in
non-system locations.
To set it, use something like (in a sh-style shell):

$ export
PKG_CONFIG_PATH=/home/alexg/lib/pkgconfig:/usr/local/lib/pkgconfig:/usr/lib/pkgconfig

To check that pkg-config is now finding the .pc file use:
$ pkg-config --list-all|grep gtkglext

It should list:
gtkglext-x11-1.0 GtkGLExt - OpenGL Extension to GTK+ (x11
target)
gtkglext-1.0 GtkGLExt - OpenGL Extension to GTK+ (x11
target)

If it does, you'll just need to make sure that PKG_CONFIG_PATH is set
the same way before calling extconf.rb.

HTH,


Geoff.