--- a/misc/gen-pkgconfig.in	2021-02-16 18:39:25.511363425 -0800
+++ b/misc/gen-pkgconfig.in	2021-02-16 18:39:46.091199906 -0800
@@ -128,7 +128,7 @@
 
 # The "URL" feature came in pkg-config 0.17
 USEURL=""
-CFGVER=`pkg-config --version 2>/dev/null |head -n 1 | awk -F. '/0.[0-9][0-9]/{print $2;}'`
+CFGVER=`${PKG_CONFIG} --version 2>/dev/null |head -n 1 | awk -F. '/0.[0-9][0-9]/{print $2;}'`
 # A missing version should simply fail, but some packagers insist on building
 # packages on machines which do not actually have the tools they depend on at
 # runtime.