Attempt to fix the following complaint:
gcc -O2 -pipe -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -Wall -O3 -ffast-math -lm `pkg-config --cflags --libs lv2` -fPIC -c so-666.c /bin/sh: pkg-config: not found
Approved by: portmgr (tier-2 blanket)