I’m also running across this same problem on ubuntu 20.04. where is the pkgconfig path? i’ve added every path i can think of under the sun for pkgconfig and pkg-config, but still getting the error message. here’s what i have for
echo $PKG_CONFIG_PATH
/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig:/opt/gvm/lib/pkgconfig:/usr/bin/pkg-config:/usr/lib/pkgconfig: