There is a GNU/Make idiom in the Makefile of the glib module.
This patch fixes the problem:
Poppler could request GNU/Make to build, but with this patch poppler compiles with BSD/Make (./configure CPPFLAGS=-I/usr/local/include LDFLAGS=-L/usr/local/lib --prefix=$HOME/local/poppler-cvs --enable-zlib && make)
Of course it still compile using GNU/Make :)
I am not a Makefile guru. I guess there might be a better way of fixing this problem. If anybody knows ...
Patch added. Thanks