headers="$2"
funcs="$3"
shift 3
- $pkg_config --exists $pkg || return
+ check_cmd $pkg_config --exists --print-errors $pkg || return
pkg_cflags=$($pkg_config --cflags $pkg)
pkg_libs=$($pkg_config --libs $pkg)
check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&