Initial bazel stuff

WORKSPACE

@@ -0,0 +1,7 @@
+new_http_archive(
+    name = "gtest",
+    url = "https://github.com/google/googletest/archive/release-1.8.0.zip",
+    sha256 = "f3ed3b58511efd272eb074a3a6d6fb79d7c2e6a0e374323d1e6bcbcc1ef141bf",
+    build_file = "gtest.BUILD",
+    strip_prefix = "googletest-release-1.8.0",
+)

gtest.Build

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+cc_library(
+    name = "main",
+    srcs = glob(
+        ["src/*.cc"],
+        exclude = ["src/gtest-all.cc"]
+    ),
+    hdrs = glob([
+        "include/**/*.h",
+        "src/*.h"
+    ]),
+    copts = ["-Iexternal/gtest/include"],
+    linkopts = ["-pthread"],
+    visibility = ["//visibility:public"],
+)

main/BUILD

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+cc_library(
+    name = "hello-greet",
+    srcs = ["hello-greet.cc"],
+    hdrs = ["hello-greet.h"],
+    visibility = ["//visibility:public"],
+)
+
+cc_binary(
+    name = "hello-world",
+    srcs = ["hello-world.cc"],
+    deps = [
+        ":hello-greet",
+#        "//lib:hello-time",
+    ],
+)

main/hello-greet.cc

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+#include "main/hello-greet.h"
+#include <string>
+
+std::string get_greet(const std::string& who) {
+  return "Hello " + who;
+}

main/hello-greet.h

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+#ifndef LIB_HELLO_GREET_H_
+#define LIB_HELLO_GREET_H_
+
+#include <string>
+
+std::string get_greet(const std::string &thing);
+
+#endif

main/hello-world.cc

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+#include "main/hello-greet.h"
+#include <iostream>
+#include <string>
+
+int main(int argc, char** argv) {
+  std::string who = "world";
+  if (argc > 1) {
+    who = argv[1];
+  }
+  std::cout << get_greet(who) << std::endl;
+  return 0;
+}

test/BUILD

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+cc_test(
+    name = "hello-test",
+    srcs = ["hello-test.cc"],
+    copts = ["-Iexternal/gtest/include"],
+    deps = [
+        "@gtest//:main",
+        "//main:hello-greet",
+    ],
+)

test/hello-test.cc

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+#include "gtest/gtest.h"
+#include "lib/hello-greet.h"
+
+TEST(HelloTest, GetGreet) {
+  EXPECT_EQ(get_greet("Bazel"), "Hello Bazel");
+}