```
Patching file js/src/Makefile.ref using Plan A...
Hunk #1 succeeded at 255.
done
gmake[1]: Entering directory '/home/vagrant/riak/deps/erlang_js/c_src/js/src'
cat: ../../dist/FreeBSD_OPT.OBJ/nspr/Version: No such file or directory
gmake -f Makefile.ref  FreeBSD_OPT.OBJ/libjs.a FreeBSD_OPT.OBJ/libjs.so FreeBSD_OPT.OBJ/js  FreeBSD_OPT.OBJ/jsautocfg.h FreeBSD_OPT.OBJ/jscpucfg FreeBSD_OPT.OBJ/jscpucfg.o
gmake[2]: Entering directory '/home/vagrant/riak/deps/erlang_js/c_src/js/src'
cat: ../../dist/FreeBSD_OPT.OBJ/nspr/Version: No such file or directory
gmake[2]: Circular jscpucfg.h <- FreeBSD_OPT.OBJ/jsautocfg.h dependency dropped.
gmake[2]: Circular FreeBSD_OPT.OBJ/jsautocfg.h <- FreeBSD_OPT.OBJ/jsautocfg.h dependency dropped.
gmake[2]: 'FreeBSD_OPT.OBJ/libjs.a' is up to date.
gmake[2]: 'FreeBSD_OPT.OBJ/libjs.so' is up to date.
cc -o FreeBSD_OPT.OBJ/js -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Wall -Wno-format -Os -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DHAVE_VA_COPY -DVA_COPY=va_copy -DPIC -fpic  -UDEBUG -DNDEBUG -UDEBUG_vagrant -DJS_THREADSAFE -DEDITLINE -IFreeBSD_OPT.OBJ
-I/home/vagrant/riak/deps/erlang_js/c_src/system/include/nspr -DHAVE_VA_COPY -DVA_COPY=va_copy  FreeBSD_OPT.OBJ/js.o FreeBSD_OPT.OBJ/libjs.a  -lm -L/home/vagrant/riak/deps/erlang_js/c_src/system/lib -lnspr4 \
    -lreadline -ltermcap
/usr/bin/ld: cannot find -lreadline
cc: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[2]: *** [Makefile.ref:326: FreeBSD_OPT.OBJ/js] Error 1
gmake[2]: Leaving directory '/home/vagrant/riak/deps/erlang_js/c_src/js/src'
gmake[1]: *** [rules.mk:66: all] Error 2
gmake[1]: Leaving directory '/home/vagrant/riak/deps/erlang_js/c_src/js/src'
gmake: *** [Makefile:30: /home/vagrant/riak/deps/erlang_js/c_src/system/lib/libjs.a] Error 2
vagrant@freebsd:~/riak/deps/erlang_js/c_src %
```

```
vagrant@freebsd:~/riak/deps/erlang_js/c_src % pkgconf --list-all | grep -i readline
readline                       Readline - Gnu Readline library for command line editing
```
```
vagrant@freebsd:~/riak/deps/erlang_js/c_src % pkg list readline | grep lib
/usr/local/lib/libhistory.a
/usr/local/lib/libhistory.so
/usr/local/lib/libhistory.so.7
/usr/local/lib/libreadline.a
/usr/local/lib/libreadline.so
/usr/local/lib/libreadline.so.7
/usr/local/libdata/pkgconfig/readline.pc
```
```
vagrant@freebsd:~/riak/deps/erlang_js/c_src % pkg list readline | grep a$
/usr/local/lib/libhistory.a
/usr/local/lib/libreadline.a
```