libglade fails to build

[Matt Blaha <thecombatwombat worldwidewombat com>]

While building garnome 0.18.0 I get the following error.

glade-init.c: In function `get_module_path':
glade-init.c:103: `GLADE_LIBDIR' undeclared (first use in this function)
glade-init.c:103: (Each undeclared identifier is reported only once
glade-init.c:103: for each function it appears in.)
make[2]: *** [glade-init.lo] Error 1
make[2]: Leaving directory `/home/wombat/libglade-2.0.1/glade'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/wombat/libglade-2.0.1'
make: *** [all] Error 2

I get the same when I try and build 0.17.1, I had successfully built
0.17.1 in the past, but foolishly deleted /opt/garnome to cleanly
install 0.18. . .any insight would be appreciated.