sys-process/iotop-c: fix CC and PKG_CONFIG calls

Closes: https://bugs.gentoo.org/785148
Signed-off-by: Zamarin Arthur <arthurzam@gmail.com>

sys-process/iotop-c/iotop-c-1.17-r1.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit fcaps linux-info
+inherit fcaps linux-info toolchain-funcs
 
 DESCRIPTION="top utility for IO (C port)"
 HOMEPAGE="https://github.com/Tomas-M/iotop"
@@ -27,7 +27,7 @@ FILECAPS=(
 )
 
 src_compile() {
-	emake V=1
+	emake V=1 CC="$(tc-getCC)" PKG_CONFIG="$(tc-getPKG_CONFIG)"
 }
 
 src_install() {