What's Changed

• Removed deprecated function by @oontvoo in #1506
• Return option benchmark_perf_counters to help output by @MaximSmolskiy in #1508
• Fixes incorrect wide string conversion on win32 by @JessyDL in #1516
• Try removing attempt to set the C++ standard by @dmah42 in #1464
• Add a benchmark_deps.bzl function to Google Benchmark by @nicholasjng in #1520
• Bug fix variable 'actual_iterations' set but not used by @yuryf-google in #1517
• Fix Clang-Tidy warnings related to modernize-use-override by @SunBlack in #1523
• Fix typos found by codespell by @SunBlack in #1519
• Include the benchmark's family-name in State by @oontvoo in #1511
• Fix Clang-Tidy warnings readability-else-after-return by @SunBlack in #1528
• [doc]Add quick instructions on how to enable sans checks by @oontvoo in #1529
• Modernize setup.py, extend Python bindings CI by @nicholasjng in #1535
• Switch bindings implementation to nanobind by @nicholasjng in #1526
• try disabling liquid for jekyll to fix curly braces by @dmah42 in #1536
• remove best effort support for ubuntu 18.04 by @dmah42 in #1537
• Deprecate constant reference API to DoNotOptimize. by @ckennelly in #1493
• Fixing issue with ARM64EC and MSVC by @jbr-smtg in #1514
• fix #1446 by removing the address operator by @dmah42 in #1538
• Support --benchmarks_filter in the compare.py 'benchmarks' command by @matta in #1486
• Allow specifying number of iterations via --benchmark_min_time. by @oontvoo in #1525
• Refactor links which include "master" and change it to "main" by @hamptonm1 in #1540
• replace complexity with simplicity for faster libc++ setup by @dmah42 in #1539
• update github actions to latest versions by @dmah42 in #1541
• Removing warnings appearing with C++20 / CLang 15 by @yuryf-google in #1542
• Add missing parentheses in ParseBenchMinTime() by @JonathonReinhart in #1545
• Werror all the time by @dmah42 in #1546
• cleanup: support CMake >= 3.10 by @coryan in #1544
• Fix CPU frequency estimation on riscv by @dtcxzyw in #1549
• add compiler to build-and-test and create min-cmake CI bot by @dmah42 in #1550
• Implement unlimited number of performance counters by @HFTrader in #1552
• Filter performance counter names, not invalidate all by @HFTrader in #1554
• get rid of DoNotOptimize warnings in tests by @dmah42 in #1562
• Refactoring of PerfCounters infrastructure by @HFTrader in #1559
• Bump nanobind to stable v0.2.0, change linker options by @nicholasjng in #1565
• Fix examples in user guide using deprecated DoNotOptimize-API by @mjacobse in #1568
• Fix build break with nvc++ when -Werror is ON by @HFTrader in #1569
• [FR] state.SkipWithMessage #963 by @gatorfax in #1564
• use std::string for skip messages by @dmah42 in #1571
• [FR] Provide public accessors to benchmark name and arguments #1551 by @gatorfax in #1563
• Address warnings on NVIDIA nvc++ by @HFTrader in #1573
• add '@' to correctly reference build file for libpfm by @dmah42 in #1575
• Convert uses of const char* to std::string by @dmah42 in #1567
• link to benchmark directly for tests that aren't link_main_test by @dmah42 in #1576
• Fix compile warnings about ignoring a [[nodiscard]] type. by @pkasting in #1577
• Correct libpfm dep for integrators. by @shiqing117 in #1579
• Guard NOMINMAX to prevent redefinition error (#1581) by @dushko in #1582
• reenable msan sanitizer workflow by @dmah42 in #1589

New Contributors

• @MaximSmolskiy made their first contribution in #1508
• @JessyDL made their first contribution in #1516
• @yuryf-google made their first contribution in #1517
• @SunBlack made their first contribution in #1523
• @jbr-smtg made their first contribution in #1514
• @hamptonm1 made their first contribution in #1540
• @JonathonReinhart made their first contribution in #1545
• @coryan made their first contribution in #1544
• @dtcxzyw made their first contribution in #1549
• @HFTrader made their first contribution in #1552
• @gatorfax made their first contribution in #1564
• @pkasting made their first contribution in #1577
• @shiqing117 made their first contribution in #1579
• @dushko made their first contribution in #1582

Full Changelog: v1.7.1...v1.8.0

What's Changed

• Remove stray comment and added missing header by @oontvoo in #1444
• Initialize help hook before actually parsing the command line by @yurikhan in #1447
• remove unnecessary generated include directory by @dominichamon in #1451
• Fixed build issues on window by @oontvoo in #1449
• Explicitly cast int literals to int8_t in tests to silence implicit-conversion warnings by @oontvoo in #1455
• Ensure we don't need benchmark installed to pass c++ feature checks by @dominichamon in #1456
• Avoid deprecation warning in NVHPC by @cz4rs in #1459
• run ClearRegisteredBenchmarks at exit by @dominichamon in #1463
• FIx typo in benchmark.h by @bdaase in #1465
• add debug option for enabling more output for failed cxxfeaturechecks by @dominichamon in #1467
• Fix link error when use as static library on windows. by @PSyton in #1470
• use CMAKE_INSTALL_FULL in pkg-config file (fixes nix package) by @babbaj in #1473
• Clean up test documentation formatting by @drfloob in #1475
• Enable aarch64 Linux wheel builds, use cibuildwheel action directly by @nicholasjng in #1472
• Eliminate usage of deprecated API in sysinfo.cc by @oontvoo in #1474
• Stop using pandas.Timedelta (fixes #1482) by @matta in #1483
• Discuss sources of variance in the user guide by @matta in #1481
• Bump pybind11 version to enable Python 3.11 wheel builds by @nicholasjng in #1489
• bump cmake dep and docs by @dominichamon in #1468
• Support for QuRT OS (Hexagon RTOS) by @Maratyszcza in #1497
• Fix Solaris compilation (#1499) by @rorth in #1500
• Do not depend on unversioned python binary by @MatzeB in #1496
• Partially revert "Do not depend on unversioned python binary (#1496)" by @LebedevRI in #1501
• Add information for supported Python versions to setup.py by @nicholasjng in #1502
• [bazel] Build libpfm as a dependency to allow collection of perf counters by @rajachan in #1408

New Contributors

• @bdaase made their first contribution in #1465
• @PSyton made their first contribution in #1470
• @babbaj made their first contribution in #1473
• @drfloob made their first contribution in #1475
• @rorth made their first contribution in #1500
• @MatzeB made their first contribution in #1496
• @rajachan made their first contribution in #1408

Full Changelog: v1.7.0...v1.7.1

Small release to replace broken v1.6.2 release

What's Changed

• Stop generating the export header and just check it in by @dominichamon in #1435
• use target_compile_definitions by @dominichamon in #1440
• simplified code by @maochongxin in #1439

New Contributors

• @maochongxin made their first contribution in #1439

Full Changelog: v1.6.2...v1.7.0

What's Changed

• Add docs for ThreadRange. by @dominichamon in #1318
• Add docs on Memory profiling (#1217). by @dominichamon in #1319
• Suppress GoogleTest warnings on windows (MSVC) too. by @dominichamon in #1320
• Expand documentation for unpacking arbitrary arguments. by @dominichamon in #1324
• Refine docs on changing cpufreq governor by @dominichamon in #1325
• Refine the User Guide CPU Frequency Scaling section by @matta in #1331
• Fix some errors in Custom Statistics document demo code. by @YuanYingdong in #1332
• Cache PerfCounters instance in PerfCountersMeasurement by @taoliq in #1308
• Fix cross compilation for macOS ARM builds in cibuildwheel by @nicholasjng in #1334
• bump numby, as per dependabot by @dominichamon in #1336
• Use Win32 API only for Win32 apps by @batortaller in #1333
• Add mutex when reading counters_ (Fixes #1335) by @taoliq in #1338
• Avoid potential truncation issues for the integral type parameterized tests. by @staffantj in #1341
• Expose default display reporter creation in public API by @dominichamon in #1344
• explicitly export public symbols by @sergiud in #1321
• Check for macro existence before using by @oontvoo in #1347
• simplify reference to internal path by @dominichamon in #1349
• Introduce the possibility to customize the help printer function by @vincenzopalazzo in #1342
• move bzl file out of tools by @dominichamon in #1352
• resolve case sensitivity issues with WORKSPACE and workspace by @dominichamon in #1354
• Make generate_export_header.bzl work for Windows. by @junyer in #1355
• @platforms is magical; remove it from WORKSPACE. by @junyer in #1356
• restore BENCHMARK_MAIN() by @sergiud in #1357
• Allow setting the default time unit globally by @batortaller in #1337
• Add long description and content type for proper PyPI presentation by @nicholasjng in #1361
• Add SetBenchmarkFilter() to set --benchmark_filter flag value in user code by @oontvoo in #1362
• Appended additional BSD 3-Clause to LICENSE by @oontvoo in #1363
• Add PyPI upload job to wheel building workflow by @nicholasjng in #1359
• Fix float comparaison and add float comparison warning by @bensuperpc in #1368
• Update LICENSE file to clearly state which file needs BSD 3 by @oontvoo in #1366
• Add BENCHMARK_STATIC_DEFINE to the Python bindings' cc_binary local… by @nicholasjng in #1369
• Remove conditional trigger from PyPI upload job by @nicholasjng in #1370
• Change artifact download name to dist to match upload name by @nicholasjng in #1371
• Build //:benchmark as a static library only. by @junyer in #1373
• Fix Bazel build breakage caused by commit 6a894bd. by @junyer in #1374
• [nfc] Reformat doc-string in generate_export_header by @oontvoo in #1376
• Updates for inclusive language by @messerb5467 in #1360
• getting sysinfo in line with Google style by @dominichamon in #1381
• Small optimization to counter map management by @dominichamon in #1382
• Shut down Bazel gracefully and revert wheel build strategy to job matrix by @nicholasjng in #1383
• Fix wheel job name for PyPI uploads by @nicholasjng in #1384
• Filter out benchmarks that start with "DISABLED_" by @dominichamon in #1387
• Add benchmark labels to the output of the comparison tool by @dominichamon in #1388
• Enable -Wconversion by @dominichamon in #1390
• Add installation and build instructions for Python bindings by @nicholasjng in #1392
• fix some typos by @cuishuang in #1393
• Add option to get the verbosity provided by commandline flag -v (#1330) by @Matthdonau in #1397
• Add support to get clock for new architecture CSKY by @zixuan-wu in #1400
• Introduce warmup phase to BenchmarkRunner (#1130) by @Matthdonau in #1399
• Report large numbers in scientific notation in console reporter (#1303) by @Matthdonau in #1402
• add multiple OSes to bazel workflow by @dominichamon in #1412
• Add possibility to ask for libbenchmark version number (#1004) by @Matthdonau in #1403
• Fix DoNotOptimize() GCC copy overhead (#1340) by @alexgpg in #1410
• Clarify that the cpu frequency is not used for benchmark timings. by @dominichamon in #1414
• Revert "Add possibility to ask for libbenchmark version number (#1004)" by @dominichamon in #1417
• Remove redundant formatting tags by @tomcobley in #1420
• Fix DoNotOptimize() GCC compile error with some types (#1340) by @alexgpg in #1424
• Expose default help printer function by @yurikhan in #1425
• fix sanitizer builds by using clang 13 by @dominichamon in #1426
• Suppress nvcc offsetof warning by @cz4rs in #1429
• Expose google_benchmark.State for python bindings. by @rmcilroy in #1430

New Contributors

• @YuanYingdong made their first contribution in #1332
• @taoliq made their first contribution in #1308
• @batortaller made their first contribution in #1333
• @vincenzopalazzo made their first contribution in #1342
• @messerb5467 made their first contribution in #1360
• @cuishuang made their first contribution in #1393
• @Matthdonau made their first contribution in #1397
• @zixuan-wu made their first contribution in #1400
• @alexgpg made their first contribution in #1410
• @tomcobley made their first contribution in #1420
• @yurikhan made their first contribution in #1425
• @cz4rs made their first contribution in #1429
• @rmcilroy made their first contribution in #1430

Full Changelog: v1.6.1...v1.6.2

What's Changed

Fixes

• Remove unused parameter from lambda. by @dominichamon in #1223
• Optimized docs installation by @xvitaly in #1225
• Fix mention of --benchmarks in comment by @oontvoo in #1229
• cmake: eliminate redundant target_include_directories by @sergiud in #1242
• Cmake: options for controlling werror, disable werror for PGI compilers by @PhilipDeegan in #1246
• Fix -Wdeprecated-declarations warning triggered by clang-cl. by @bc-lee in #1245
• cmake: make package config relocatable by @sergiud in #1244
• cmake: allow to use package config from build directory by @sergiud in #1240
• Fix -Wdeprecated-declarations warning once more. by @bc-lee in #1256
• Fix un-initted error in test and fix change the API previously proposed to use std::string instead of raw char* by @oontvoo in #1266
• [cleanup] Change == "" to .empty() on string to avoid clang-tidy warnings by @oontvoo in #1271
• Fix errorWshorten-64-to-32 with clang 12.0 by @bensuperpc in #1273
• Fix error with Fix Werror=old-style-cast by @bensuperpc in #1272
• Fixed typo in doc: s/marcro/macro by @oontvoo in #1274
• Fix warning with MacOS by @bensuperpc in #1276
• clang-format Google on {src/,include/} by @dominichamon in #1280
• format tests with clang-format by @dominichamon in #1282
• check clang format on pull requests and merges by @dominichamon in #1281
• Fix dependency typo and unpin cibuildwheel version in wheel building … by @nicholasjng in #1263
• disable lint check where we know it'd fail by @oontvoo in #1286
• Disable clang-tidy (unused-using-decls) by @oontvoo in #1287
• Add clang-tidy check by @dominc8 in #1290
• Fix broken link to Setup/Teardown section by @Krzmbrzl in #1291
• Update user_guide.md: thread_index should be thread_index() by @ShawnZhong in #1296
• clang-tidy: readability-redundant and performance by @dominc8 in #1298
• update googletest to latest release tag 1.11.0 by @dominichamon in #1301
• Avoid errors due to "default label in switch which covers all enumeration values" in Windows codepath by @mstorsjo in #1302
• Fix -DBENCHMARK_ENABLE_INSTALL=OFF build (Fixes #1275) by @LebedevRI in #1305
• Address c4267 warning on MSVC by @staffantj in #1315
• Destructor not returning is expected in some cases by @staffantj in #1316

Features

• Added support of packaged GTest for running unit tests by @xvitaly in #1226
• Introduce additional memory metrics by @oontvoo in #1238
• Added Doxygen support by @xvitaly in #1228
• Allow template arguments to be specified directly on the BENCHMARK macro by @oontvoo in #1262
• [RFC] Adding API for setting/getting benchmark_filter flag? by @oontvoo in #1254
• use docker container for ubuntu-16.04 builds by @dominichamon in #1265
• Support for building with LLVM clang-10/clang-11 on Windows. by @alisenai in #1227
• Add Setup/Teardown option on Benchmark. by @oontvoo in #1269
• compare.py: compute and print 'OVERALL GEOMEAN' aggregate by @LebedevRI in #1289

New Contributors

• @PhilipDeegan made their first contribution in #1246
• @bc-lee made their first contribution in #1245
• @bensuperpc made their first contribution in #1273
• @alisenai made their first contribution in #1227
• @rHermes made their first contribution in #1283
• @dondenton made their first contribution in #1285
• @dominc8 made their first contribution in #1290
• @Krzmbrzl made their first contribution in #1291
• @ShawnZhong made their first contribution in #1296
• @staffantj made their first contribution in #1315

Full Changelog: v1.6.0...v1.6.1

features

• [breaking change] introduce accessorrs for public data members (#1208)
• add support for percentage units in statistics (#1219)
• introduce coefficient of variation aggregate (#1220)
• format percentages in console reporter (#1221)

bugfixes

• fix unreachable code warning (#1214)
• replace #warning with #pragma message (#1216)
• report PFM as found when it is
• update u-test value expectations due to scipy upgrade

other stuff

• refactored documentation to minimise README.md (#1211)
• install docs when installing library (#1212)

features

• helper methods to create integer lists (#1179)
• default of --benchmark_filter is now rather than "." (#1207)

fixes

• type warning (#1193)
• returning a reference when callers want pointers (65dc63b)

cleanup

• remove dead code from PredictNumItersNeeded (#1206)
• fix clang-tidy warnings (#1195) and typos (#1194)
• prefix macros (#1186) and flags (#1187, #1185) to avoid name clashes
• downgrade warnings for googletest (twice) (#1203, 560b0834, ee726a7)

new features

• Add support for new architecture loongarch (#1173)
• Fixed version of random interleaving of benchmark repetitions (#1163, fixing #1051)
• Easier comparison of results across families (#1168 #1166 #1165 #1164)

fixes

• Fix perf counter argument parsing (#1160)

internal cleanup

• Drop warning to satisfy clang's -Wunused-but-set-variable diag (#1174)
• Enable some sanitizer builds in github actions (#1167 #1171)
• Fix memory leak in test (#1169)

new features

• better versioning in releases [#1047]
• MSVC arm64 support [#1090]
• add support for hardware performance counters [#1114, #1153]
• add interface for custom context to be included [#1127, #1137]
• random interleaving to reduce noise [#1105]

compiler cleanliness

• support -Wsuggest-override [#1059]
• builds correctly with gcc-11 [#1060]
• fix some windows warnings [#1121]
• fix -Wreserved-identifier failures [#1143]
• fix pendantic warnings [#1156]

New features

• Implement custom benchmark names (#1107)
• Support for macro expansion in benchmark names (#1054)
• Reduce ramp up repetitions when KeepRunningBatch is used (#1113)

Platform support

• CycleTimer implemented for M68K architecture (#1050)
• Support for DragonFly BSD (#1058)
• Better support for z/OS (#1063, #1067)
• Add MSVC ARM64 support for cycle clocks (#1052)
• Add support for Elbrus 2000 (#1091)
• Fix CPU frequency for AMD Ryzen (and probably other CPUs) (#1117)

Bug fixes

• Fix range when starting at zero (#1073)

Tool improvements

• Build tools with bazel (#982)
• Support JSON dumps of benchmark diffs (#1042)