add_build_file.patch

--- /dev/null
+++ BUILD.bazel
@@ -0,0 +1,15 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+cc_library(
+    name = "fmt",
+    srcs = [
+        "src/format.cc",
+        "src/os.cc",
+    ],
+    hdrs = glob([
+        "include/fmt/*.h",
+    ]),
+    includes = ["include"],
+)