I bow to your efforts in appreciation - it seems to install without flaws!!

I tried the new cairo-1-12-14 and then r-3-2-1 in a frest postgresqldb/galaxy instance … everything got installed and shows the green label ;-)

requirements on top of Mac OS Xcode/command line tools are:

- gfortran (I used the OS X 10.11  gfortran 5.2 installer from here https://gcc.gnu.org/wiki/GFortranBinaries)

- libiconv-1.14 (from http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz) - (which I put into /usr/local where it seems to be found without editing my $PATH)

This is great! Many thanks again!

Hans