Implemented enhancements:

• "sprintf" function being used in googletest.h which is not secure #536
• Glog file separation by year #516
• Bazel support for windows #472
• Glog should delete old log files automaticly #423
• LogSink::ToString has no microsecond precision. #307
• Add extra information in log file header (application build/version, actual duration time) #438 (d-uspenskiy)
• Use libunwind as an imported target #368 (UVV-gh)
• Annotate LOG_EVERY_N macros as a benign race for TSAN #263 (kennyyu)

Fixed bugs:

• Incorrect Unwind version parser #598
• Replace obsolete __CYGWIN64__ macro #566
• Ownership with SetLogger #524
• Test stl_logging fails in macOS CMake build #201
• cmake: fixed unwind patch component match check #613 (sergiud)

Closed issues:

• BUILD file will create a conflict with build/ folder #606
• glog don't create log file in visual c++ dll project #605
• error in CMAKE installation steps--$ git clone git@github.com:google/glog.git should change to $ git clone https://github.com/google/glog.git #603
• No system link created along with the log files #599
• CMake build instructions do not work for paths with ampersand #597
• publicly visible Bazel target no longer provides any headers #596
• LogCleaner::IsLogFromCurrentProject incorrect when SetLogFilenameExtension #589
• EnableLogCleaner not recognized #586
• IsGlogLog problem #584
• Write the correct Windows version in the log header #572
• Ability to write time in UTC in log files #571
• glog error log was incorrrectly written to unexpected memory #561
• How to disable logging. #556
• Cannot compile "configure: WARNING: 'missing' script is too old or missing" #544
• Dropping autoconf support #537
• Failed to print INFO and WARNING log #533
• glog rpm installation fails if openstack-train repo is enabled #522
• stripped binaries produce useless backtraces #514
• Flag --incompatible_no_implicit_file_export will break Google Logging in a future Bazel release #512
• Flag --incompatible_load_cc_rules_from_bzl will break Google Logging in Bazel 1.2.1 #507
• Flag --incompatible_no_implicit_file_export will break Google Logging in Bazel 1.2.1 #506
• Is there any way logging without a mutex #504
• Including glog/logging.h triggers -Wunused-parameter on g++ #493
• Bazel: building glog with custom version gflags #480
• cmake/DetermineGflagsNamespace.cmake was ignored when repush #473
• Conflict with gflags #458
• log file name error after application restart #457
• multi thread cant share glog setting #450
• Crash in symbolize_unittest on Ubuntu 18.04 x86_64 #435
• golang/glog sometime can not create the log_dir? #369
• Stacktrace is not printed by failure signal handler when built with Bazel #346
• When might 0.3.6 be released? #345
• libunwind GetStackTrace implementation doesn't allow concurrent invocations #298
• stacktrace_libunwind-inl.h: reentrancy check should use a thread-local instead of a global variable #160

Merged pull requests:

• bazel: declare headers in top-level rule #615 (drigz)
• Rename BUILD to BUILD.bazel. #614 (drigz)
• replaced __CYGWIN32__ and __CYGWIN64__ by __CYGWIN__ #611 (sergiud)
• consolidate readme #610 (sergiud)
• cmake: handle empty unwind version patch component #609 (sergiud)
• Make stl_logging_unittest more robust. #608 (mahiuchun)
• Fix the symlink creation bug if using bazel #600 (zoukyle)
• src/logging.cc: Fix a typo in comment #593 (aesophor)
• src/logging.cc: Make LogCleaner aware of filename extension (#589) #592 (aesophor)
• remove autoconf support #585 (sergiud)
• Make cmake build on path with spaces. #580 (Yicong-Huang)
• Added check for if info.dli_sname is NULL #579 (arj-fb)
• Add override to LogStreamBuf::overflow() #576 (santigl)
• Add FLAGS_log_utc_time; when 'true' the time will be written in log in UTC, resolves #571 #573 (msamoila)
• Connect glog to Andorid logging API #570 (jiuqiant)
• Output to logcat on Android #553 (huangqinjin)
• Make message text null-terminated #552 (huangqinjin)
• Replace sprintf() with snprintf() (#536) #551 (aesophor)
• Fix build for Emscripten #546 (schoppmp)
• OpenBSD/powerpc: clang does not define _CALL_*, use proper ifdef instead #545 (julianaito)
• Use NULL to indicate uninitialized VLOG_IS_ON site. #542 (xulongwu4)
• Fix unused parameter warning on gcc. #540 (pwnall)
• Prepend the year to each glog line (#516) #530 (aesophor)
• fix bazel build for freebsd #526 (dfr)
• Allow CMake user to disable Symbolize functionality #523 (edbaunton)
• Add target existence checks to Unwind find module #518 (MichaelDarr)
• Add vcpkg installation instructions #517 (LilyWangL)
• Explain log levels. #515 (fmayer)
• Use file offsets in traces if object has no symbols #513 (mspang)
• Don't call close(2) more than once #508 (xiaosuo)
• Fix missing deletion of custom Logger #503 (alexsmac)
• src/logging.cc: encapsulate log cleaner, match logfile with <base_filename_><date>-<time>.<pid> #502 (aesophor)
• Address review comments for Bazel/Win32 build #499 (drigz)
• Fix race conditions in LOG_EVERY_N #492 (aesophor)
• doc: add information about log cleaner #491 (aesophor)
• Added fixed log name support, take 2 #489 (ezegomez)
• Add windows support for bazel build #488 (skeptic-monkey)
• src/logging.cc: fix wrong assignment #487 (Telunsu)
• src/symbolize.cc: do not check for HAVE_DLFCN_H for macOS #485 (ffontaine)
• removed executable flag from .cmake file #484 (sergiud)
• Support pkg-config #483 (loop0day)
• Revert "Added fixed log name support" #482 (sergiud)
• logging: Fix compilation with uClibc++ #479 (neheb)
• src/utilities: fix build without pthread #477 (ffontaine)
• src/symbolize.cc: fix build without dlfcn.h #475 (ffontaine)
• declare FLAGS_vmodule #467 (sukill)
• I supported clang-cl with BUILD_SHARED_LIBS #465 (durswd)
• googletest: Switch to nanosleep #460 (neheb)
• fix typo: TOOD -> TODO #448 (ukai)
• Don't test on Ubuntu 14.04 #446 (philwo)
• Fix symbolize_unittest for musl builds #443 (ammubhave)
• Extend the LogSink interface to be able to pass microseconds #441 (asekretenko)
• Add support for automatic removal of old logs #432 (aesophor)
• Fix logmailer problem for dynamic lib use of glog. #400 (guoyuhong)
• Fix warnings #370 (hemantbits)
• Allow getpwuid_r to return missing entry. #350 (TheModMaker)
• Fix stacktrace on Bazel build. #347 (nya3jp)
• Fix build for Android API < 21 #312 (ruslo)
• Use thread local for libunwind GetStackTrace() reentrancy protection #161 (mpercy)
• Respect configured docdir #88 (kekstee)
• Added fixed log name support #19 (ezegomez)