Build benchmark and all tests with Bazel without modifying C++ source code

.gitignore

@@ -45,6 +45,7 @@ rules.ninja
 build/
 _build/
 
-# in-source dependancies
 /googletest/
 
+# Bazel directories.
+bazel-*

.travis.yml

@@ -155,11 +155,18 @@ install:
       brew update;
       brew install gcc@7;
     fi
+  - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then
+      wget https://github.com/bazelbuild/bazel/releases/download/0.8.1/bazel-0.8.1-installer-linux-x86_64.sh --output-document bazel-installer.sh && sudo bash bazel-installer.sh;
+    fi
+  - if [ "${TRAVIS_OS_NAME}" == "osx" ]; then
+      brew install bazel;
+    fi
 
 script:
   - cmake -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${COMPILER} -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DCMAKE_CXX_FLAGS="${EXTRA_FLAGS}" -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON -DBENCHMARK_BUILD_32_BITS=${BUILD_32_BITS} ..
   - make
   - ctest -C ${BUILD_TYPE} --output-on-failure
+  - bazel test //... --test_output=errors
 
 after_success:
   - if [ "${BUILD_TYPE}" == "Coverage" -a "${TRAVIS_OS_NAME}" == "linux" ]; then

BUILD.bazel

@@ -0,0 +1,150 @@
+licenses(['notice'])
+package(default_visibility=['//visibility:public'])
+
+BENCHMARK_COPTS = [
+    # Choose the regex backend by defining one of the macros below:
+    #       HAVE_GNU_POSIX_REGEX
+    #       HAVE_POSIX_REGEX
+    #       HAVE_STD_REGEX
+    '-DHAVE_POSIX_REGEX',
+    '-UNDEBUG',
+    '-Wall',
+    '-Wextra',
+    '-Wfloat-equal',
+    '-Wshadow',
+    '-Wstrict-aliasing',
+    '-Wzero-as-null-pointer-constant',
+    '-fstrict-aliasing',
+    '-pedantic',
+    '-pedantic-errors',
+    '-std=c++11',
+]
+
+
+GTEST_DEP = '@com_github_google_googletest//:gtest'
+
+cc_library(
+    name = 'benchmark',
+    srcs = [
+        'src/arraysize.h',
+        'src/benchmark.cc',
+        'src/benchmark_api_internal.h',
+        'src/benchmark_register.cc',
+        'src/check.h',
+        'src/colorprint.cc',
+        'src/colorprint.h',
+        'src/commandlineflags.cc',
+        'src/commandlineflags.h',
+        'src/complexity.cc',
+        'src/complexity.h',
+        'src/console_reporter.cc',
+        'src/counter.cc',
+        'src/counter.h',
+        'src/csv_reporter.cc',
+        'src/cycleclock.h',
+        'src/internal_macros.h',
+        'src/json_reporter.cc',
+        'src/log.h',
+        'src/mutex.h',
+        'src/re.h',
+        'src/reporter.cc',
+        'src/sleep.cc',
+        'src/sleep.h',
+        'src/statistics.cc',
+        'src/statistics.h',
+        'src/string_util.cc',
+        'src/string_util.h',
+        'src/sysinfo.cc',
+        'src/timers.cc',
+        'src/timers.h',
+    ],
+    hdrs = [
+        'include/benchmark/benchmark.h',
+    ],
+    includes = [
+        'include',
+    ],
+    copts = BENCHMARK_COPTS,
+    linkopts = [
+        '-lm',
+        '-pthread',
+    ],
+)
+
+[cc_test(
+    name = f,
+    srcs = [
+        'test/%s.cc' % f,
+    ],
+    copts = BENCHMARK_COPTS,
+    deps = [
+        ':benchmark',
+    ],
+    testonly = 1,
+) for f in [
+        'basic_test',
+        'benchmark_test',
+        'diagnostics_test',
+        'donotoptimize_test',
+        'filter_test',
+        'fixture_test',
+        'map_test',
+        'multiple_ranges_test',
+        'options_test',
+        'register_benchmark_test',
+        'skip_with_error_test',
+        'templated_fixture_test',
+    ]
+]
+
+[cc_test(
+    name = f,
+    srcs = [
+        'test/%s.cc' % f,
+    ],
+    copts = BENCHMARK_COPTS,
+    deps = [
+        ':output_test_helper',
+        GTEST_DEP,
+    ],
+    testonly = 1,
+) for f in [
+        'complexity_test',
+        'reporter_output_test',
+        'user_counters_tabular_test',
+        'user_counters_test',
+    ]
+]
+
+cc_test(
+    name = 'cxx03_test',
+    srcs = [
+        'test/cxx03_test.cc',
+    ],
+    copts = [
+        '-std=c++03',
+    ],
+    deps = [
+        ':benchmark',
+    ],
+    testonly = 1,
+)
+
+cc_library(
+    name = 'output_test_helper',
+    visibility = [
+        '//visibility:__pkg__',
+    ],
+    srcs = [
+        'test/output_test_helper.cc',
+    ],
+    hdrs = [
+        'test/output_test.h',
+    ],
+    strip_include_prefix = 'test',
+    copts = BENCHMARK_COPTS,
+    deps = [
+        ':benchmark',
+    ],
+    testonly = 1,
+)

WORKSPACE

@@ -0,0 +1,7 @@
+git_repository(
+    name = 'com_github_google_googletest',
+    # TODO: Use googletest/googltest.git once the following PR is committed:
+    #       https://github.com/google/googletest/pull/1212
+    remote = 'https://github.com/qzmfranklin/googletest.git',
+    commit = 'a7bd3725f08fe38374544bbf8f03699fc0d32a0b'
+)