Can't build epiphany plugin

[Stef <stef memberwebs com>]

I decided to move this discussion from bugzilla [1] to here, since I
think it's more relevant here. Hope that's okay.

Adam Schreiber wrote:
> The easiest way to get the build dependencies on Ubuntu is to run sudo apt-get
> build-dep seahorse (remember that hardy doesn't reflect the package split) and
> sudo apt-get build dep epiphany-extensions

Here's what I got when I installed the build-dep of epiphany-extensions
(I assume I had all the rest installed already):

------------------8<--------------------------8<----------------

stef stef:~$ sudo apt-get build-dep epiphany-extensions
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  libffi4-dev libosp-dev opensp python-dev python-gobject-dev
python-gtk2-dev
  python2.5-dev
0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Need to get 4272kB of archives.
After this operation, 14.3MB of additional disk space will be used.
Do you want to continue [Y/n]?

------------------8<--------------------------8<----------------

After doing the above I still can't build the epiphany plugin. In
particular:

------------------8<--------------------------8<----------------

stef stef:~/projects/seahorse-plugins$ ./autogen.sh --prefix=/usr
--sysconfdir=/etc
<snip>
checking which gecko to use...
./configure: line 22973: test: : integer expression expected
./configure: line 22981: test: : integer expression expected
./configure: line 22989: test: : integer expression expected
./configure: line 22997: test: : integer expression expected
./configure: line 23016: test: : integer expression expected
disabling epiphany plugin
enabling gedit plugin...
<snip>
GnuPG Version:           gpg (GnuPG) 1.4.6
GPGME Version:           1.1.5
Plugins:
  Epiphany:              no
  GEdit (v <= 2.12):     no
  GEdit (v >= 2.14):     yes
  Panel Applet:          yes
  Nautilus:              yes
  Seahorse Agent:        yes
Notification Support:    yes

------------------8<--------------------------8<----------------

Cheers,

Stef

[1] http://bugzilla.gnome.org/show_bug.cgi?id=505990