C++: Introduce flag for forcing rules through macro

The flag `--incompatible_load_cc_rules_from_bzl` will be flipped for Bazel 1.0.

GitHub Issue: #8743

RELNOTES:none
PiperOrigin-RevId: 259285337
diff --git a/tools/cpp/BUILD.static.freebsd b/tools/cpp/BUILD.static.freebsd
index b21dc3d..a3a69d3 100644
--- a/tools/cpp/BUILD.static.freebsd
+++ b/tools/cpp/BUILD.static.freebsd
@@ -17,6 +17,7 @@
 package(default_visibility = ["//visibility:public"])
 
 load("@bazel_tools//tools/cpp:cc_toolchain_config.bzl", "cc_toolchain_config")
+load("@rules_cc//cc:defs.bzl", "cc_toolchain_suite", "cc_toolchain", "cc_library")
 
 cc_library(
     name = "malloc",