Compile boost files, add example for static linking for compress sample

BUILD

@@ -47,10 +47,10 @@ cc_library(
     "@snappy//:snappy",
     "@zlib//:zlib",
     "@gtest//:gtest",
+    "@boost//:boost"
   ],
   copts = [
     "-Iexternal/googletest/include",
-    "-Iexternal/boost/boost"
   ],
   visibility = ["//visibility:public"],
 )

WORKSPACE

@@ -23,6 +23,7 @@ new_http_archive(
   url = "https://sourceforge.net/projects/boost/files/boost/1.61.0/boost_1_61_0.tar.bz2/download",
   type = "tar.bz2",
   strip_prefix = "boost_1_61_0/",
+  build_file = "bazel/boost.BUILD",
   sha256 = "a547bd06c2fd9a71ba1d169d9cf0339da7ebf4753849a8f7d6fdb8feee99b640",
 )
 

bazel/boost.BUILD

@@ -0,0 +1,12 @@
+cc_library(
+  name = "boost",
+  srcs = [],
+  hdrs = glob([
+    "boost/**/*.h",
+    "boost/**/*.hpp",
+    "boost/**/*.ipp",
+    "boost/**/*.cc",
+  ]),
+  includes = ["."],
+  visibility = ["//visibility:public"]
+)

sample/compress_sample/BUILD

@@ -1,5 +1,13 @@
 load("@protobuf//:protobuf.bzl", "cc_proto_library")
 
+config_setting(
+  name = "darwin",
+  values = {
+    "cpu": "darwin",
+  },
+  visibility = ["//visibility:public"],
+)
+
 cc_proto_library(
   name = "echo_proto",
   srcs = [
@@ -23,6 +31,10 @@ cc_binary(
     "@protobuf//:protobuf",
     "@protobuf//:protoc_lib",
   ],
+  linkopts = select({
+    ":darwin": [],
+    "//conditions:default": ["-static"]
+  }),
   visibility = ["//main:__pkg__"],
 )
 
@@ -36,5 +48,9 @@ cc_binary(
     "@protobuf//:protobuf",
     "@protobuf//:protoc_lib",
   ],
+  linkopts = select({
+    ":darwin": [],
+    "//conditions:default": ["-static"]
+  }),
   visibility = ["//main:__pkg__"],
 )