ddox build locally failed

[berni44]

I tried to build ddox documentation locally with the command (in 
dlang.org):

make -j3 -f posix.mak apidocs-prerelease

After a while I get the message "Linking..." followed by a call 
of dmd with lots of parameters, among them -L-lssl and 
-L-lcrypto. This ends in:

/usr/bin/ld: cannot find -lssl
/usr/bin/ld: cannot find -lcrypto

I'm using debian stable. There are probably some packages missing 
or maybe a path needs to be set. Any ideas?