[Gimp-docs] 'make pdf' fails

[Julien Hardelin <jhardlin orange fr>]

Hi,
When I run 'make pdf-fr' I get the error
*** cannot build PDFs because dblatex(1) was not found ***.

dblatex is yet installed. The executable is in /usr/bin and this path is 
in the $PATH variable.
fr XML files are created.
If I run dblatex directly on an xml file, the corresponding pdf file is 
created...

I use Ubuntu-15.10

What is wrong with 'make pdf'?

Julien Hardelin