--- a/dev-libs/stb/files/stb.pc	
+++ a/dev-libs/stb/files/stb.pc	
@@ -0,0 +1,7 @@ 
+prefix=/usr
+includedir=${prefix}/include/stb
+
+Name: stb
+Description: stb single-file public domain libraries
+Cflags: -I${includedir}
+Version: {PV}
--- a/dev-libs/stb/stb-20200713.ebuild	
+++ a/dev-libs/stb/stb-20200713.ebuild	
@@ -31,4 +31,8 @@ src_prepare() {
 
 src_install() {
 	doheader -r stb
+	insinto /usr/share/pkgconfig
+	cp "${FILESDIR}/stb.pc" "${T}" || die
+	sed -i "s|{PV}|${PV}|g" "${T}/stb.pc" || die
+	doins "${T}/stb.pc"
 }