> Some time ago for release 3 Rob did the interface to bzip. I did not anticipate it to be that smooth. Basically I could compile and transform the zlib source with no modification at all (but there are some quirks with the autoconf things). There's some 300 odd lines of PL/j to make the pipeline filter package and do the ABI linkage and wrappers around CMSSTOR macros. The zlib source delivered 25,000 lines of assembler input.
We also did the PCRE library as another proof of concept. That worked well too. Sir Rob the Plumber