Add a Bazel build file for lightstep-tracer-cpp.

BUILD.bazel

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+cc_library(
+    name = "lightstep_tracer",
+    srcs = glob([
+        "src/*.cpp",
+        "src/*.h",
+    ]),
+    hdrs = glob(["include/lightstep/*.h"]) + [
+        ":include/lightstep/config.h",
+        ":include/lightstep/version.h",
+    ],
+    strip_include_prefix = "include",
+    visibility = ["//visibility:public"],
+    deps = [
+        "@com_lightstep_tracer_common//:lightstep_protos",
+        ":3rd_party_base64",
+        ":3rd_party_catch",
+        # https://github.com/opentracing/opentracing-cpp
+        "@io_opentracing_cpp//:opentracing",
+    ],
+)
+
+genrule(
+    name = "generate_version_h",
+    srcs = glob([
+        "*",
+        "cmake/**/*",
+        "example/**/*",
+        "src/*",
+        "3rd_party/**/*",
+    ]),
+    outs = [
+        "include/lightstep/config.h",
+        "include/lightstep/version.h",
+    ],
+    cmd = """
+    cmake \\
+        -DBUILD_TESTING=OFF \\
+        -DWITH_GRPC=OFF \\
+        -DOPENTRACING_INCLUDE_DIR="" \\
+        -DOPENTRACING_LIBRARY="" \\
+        -L \\
+        $$(dirname $(location :CMakeLists.txt))
+    mv include/lightstep/config.h $(location :include/lightstep/config.h)
+    mv include/lightstep/version.h $(location :include/lightstep/version.h)
+    """,
+)
+
+cc_library(
+    name = "3rd_party_base64",
+    srcs = glob(["3rd_party/base64/src/*.cpp"]),
+    hdrs = glob(["3rd_party/base64/include/**/*.h"]),
+    strip_include_prefix = "3rd_party/base64/include",
+)
+
+cc_library(
+    name = "3rd_party_catch",
+    hdrs = glob(["3rd_party/catch/include/**/*.hpp"]),
+    strip_include_prefix = "3rd_party/catch/include",
+)

WORKSPACE

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+workspace(name = "com_lightstep_tracer_cpp")
+
+local_repository(
+    name = "com_lightstep_tracer_common",
+    path = "lightstep-tracer-common",
+)
+
+local_repository(
+    name = "lightstep_vendored_googleapis",
+    path = "lightstep-tracer-common/third_party/googleapis",
+)

lightstep-tracer-common/BUILD

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+proto_library(
+    name = "collector_proto",
+    srcs = ["collector.proto"],
+    deps = [
+        "@lightstep_vendored_googleapis//:googleapis_proto",
+        "@com_google_protobuf//:timestamp_proto",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_proto_library(
+    name = "collector_proto_cc",
+    deps = [":collector_proto"],
+)
+
+proto_library(
+    name = "lightstep_carrier_proto",
+    srcs = ["lightstep_carrier.proto"],
+    visibility = ["//visibility:public"],
+)
+
+cc_proto_library(
+    name = "lightstep_carrier_proto_cc",
+    deps = [":lightstep_carrier_proto"],
+)
+
+# FIXME: this rule allows `#include <collector.pb.h>` to work, but it
+# would be nicer to have properly prefixed include paths instead.
+cc_library(
+    name = "lightstep_protos",
+    deps = [
+        ":collector_proto_cc",
+        ":lightstep_carrier_proto_cc",
+    ],
+    visibility = ["//visibility:public"],
+    includes = ["."]
+)

lightstep-tracer-common/WORKSPACE

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+

lightstep-tracer-common/third_party/googleapis/BUILD

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+proto_library(
+    name = "googleapis_proto",
+    srcs = [
+        "google/api/annotations.proto",
+        "google/api/http.proto",
+    ],
+    deps = [
+        "@com_google_protobuf//:descriptor_proto",
+    ],
+    visibility = ["//visibility:public"],
+)