Notes for Windows users

Boost.WinAPI has been updated to target Windows 7 by default, where possible. In previous releases Windows Vista was the default.

Boost.WinAPI is used internally as the Windows SDK abstraction layer in a number of Boost libraries, including Boost.Beast, Boost.Chrono, Boost.DateTime, Boost.Dll, Boost.Log, Boost.Process, Boost.Stacktrace, Boost.System, Boost.Thread and Boost.UUID. To select the target Windows version define BOOST_USE_WINAPI_VERSION to the numeric version similar to _WIN32_WINNT while compiling Boost and user's code. For example:

    b2 release define=BOOST_USE_WINAPI_VERSION=0x0501 stage

The list of Windows API version numbers can be seen on this page.

New Libraries

• YAP: An expression template library for C++14 and later, from Zach Laine.

Updated Libraries

• Beast:

  • This version fixes a missing executor work guard in all composed operations used in the implementation. Users who are experiencing crashes related to asynchronous completion handlers are encouraged to upgrade.
  • For a complete list of changes, please view the official Release Notes.
• Context:

  • #78: Linker error with context-impl=ucontext: multiple definition of boost::context::detail::current_rec
• Coroutine2:

  • #14: crash while stack unwinding
  • #18: some guidance on why to use coroutine2
  • #20: failes to compile test in due to the error C2039
  • #22: undefined behaviour documentation
• Fiber:

  • #170: buffered_channel::try_push has incorrect documentation
  • #172: WIN64: 'invalid conversion from 'HANDLE' to 'std::thread::native_handle_type' errors for builds using mingw-w64
  • #175: throw exception "Operation not permitted"
  • NUMA support moved to extra library (fiber-numa); enabled via property numa (numa=on)
• Fusion:

  • Added a workaround for ambiguous call of fusion::deque constructor on GCC 4.4/c++0x (PR#178, commit).
  • Fixed a bug with C-style array (PR#177).
  • Fixed a fusion::for_each signature to take functor by value (#4427).

    • This may break existing code with non-copyable (non-movable) functor, but the implementation wasn't correct for a long time; the documantation was correct from the first. So, please make sure your usage.
  • Fixed unintentional MPL placeholder substitution bug on fusion::transform (#5490).
  • Moved description, how to conform Fusion sequence as MPL sequence, to mpl section (#4029).
  • Added notes regarding IO facility for adapted type (#6091).
• Geometry:

  • Improvements

    • 469 Horizontal grid shift (nadgrids) in SRS transformations (undocumented for now due to potential interface changes).
    • 478 Box-Segment distance for spherical and geographic coordinate systems.
    • 487 Missing combinations of geometries in distance for spherical and geographic cs
    • 489 Additional direct geodesic problem formulas for internal use
  • Solved issues

    • 470 Assertion failure with short spherical and geographic segments.
    • 471 Invalid envelope of spherical polygon
    • 498 Unexpected results with expand() and make_inverse() for spherical and geographic CS
    • 504 Unused parameter warnings.
  • Bugfixes

    • 488 Handle non-true-references in closing_iterator and ever_circling_range_iterator
    • 495 VxWorks 7 cross-compilation issue.
• GIL:

  • Added

    • The library now requires a C++11-compliant compiler.
    • New top-level all-in-one include/boost/gil.hpp header (PR#70).
    • New Toolbox extension, reviewed and accepted into Boost.
  • Changed

    • IO extensions have been entirely rewritten as IO v2, reviewed and accepted into Boost.
    • Documentation has been reformatted and updated.
  • Removed

    • IO v1 extension has been replaced with IO v2.
• Graph:

  • Conditionally replace deprecated/removed C++98 std::bind1st by std::bind, std::auto_ptr by std::unique_ptr, and std::random_shuffle by std::shuffle. (PR#89)
  • Fix compiler error with release builds on VS2015 (PR#84)
  • Fix the Stanford GraphBase examples (PR#87)
  • Fix friend declarations for iterator_core_access (PR#103)
  • Add missing <boost/iterator.hpp> include (PR#104)
  • Avoid an unused variable warning (PR#90)
  • Fix some typos in documentation (PR#88, PR#98, PR#102)
  • Fix some issues in tests and examples (PR#85, PR#105)
• Lexical Cast:

  • Fixes for clang-tidy warnings #12092
• Log:

  • Improved support for VxWorks. (PR#39)
  • Save and restore ebx register on x86 PIE targets in the dump stream manipulator implementation.
• Math:

  • Support for arbitrary precision complex valued quadrature and hence contour integration
  • Improve performance of polynomial addition
  • Continue to improve numerical integration routines, and in particular add support for contour integrals.
  • Improve accuracy of erfc function's rational approximations.
• Multi-index Containers:

  • Containers of moveable but non-copyable elements can now be serialized (ticket #13478). Thanks to Sébastien Paris for the report.
  • multi_index_container's default constructor is no longer explicit (ticket #13518).
• Multiprecision:

  • Support added for complex multiprecision numbers.
  • Changed conversion to unsigned integer types to be truncating to match standard defined behaviour.
  • Correct bug in MPFR string formatting.
  • Fix undefined behaviour in cpp_dec_float conversion from long long.
  • Add support for Eigen interoperability.
  • float128.hpp: Fix Intel on Windows build.
  • Fix type used in temporaries when expanding expression templates containing mixed expressions.
  • Fix infinite loop in gmp_float to fixed-point string conversion.
  • Update the expression templates to issue static_asserts with better error messages when you try and do something unsupported.
  • Fix bug in cpp_int where incrementing to zero doesn't set the sign correctly.
  • Remove erroneous use of std::move, and rely on NVRO instead.
  • Fix up support for changes to MPIR-3.0.
  • Fix various conversion errors in cpp_bin_float when the exponent type is a long long, or else we're converting to an integer that is wider than we are.
  • Fix compatibility issue with GCC-8 caused by the introduction of std::byte.
• Optional:

  • Added member function has_value() for compatibility with std::optional (issue #52).
  • Added member function map() for transforming optional<T> into optional<U> using a function of type T -> U.
  • Added member function flat_map() for transforming optional<T> into optional<U> using a function of type T -> optonal<U>.
• Predef:

  • Add support for __ARM_ARCH macro. (from Tim Blechmann)
  • Add detection for PTX architecture. (from Benjamin Worpitz)
  • Add nvcc compiler detection. (from Benjamin Worpitz)
  • Add support for detecting CUDA. (from Benjamin Worpitz)
  • Remove reference to obsolete BOOST_ARCH_AMD64. (from Peter Kolbus)
• Program Options:

  • Support for multiple long names for an option, thanks to Eyal Rozenberg (PR#53)
• Python:

  • Bug fixes to correct autolink support (Windows) (#193)
• Rational:

  • Fixed undefined behavior in normalize() (PR#19).
• System:

  • Add constexpr to error_code and error_condition members under C++14 and above (PR#23).
• Signals:

  • Removal Notice: Boost.Signals will be removed in the next release. Boost.Signals was deprecated in version 1.54.0. Transition to Boost.Signals2 now to avoid disruption.
• Spirit:

  • Spirit.X3:

    • Small list parser optimization (PR#368).
    • Pass container attributes through sequence parser or unary ending down to a sequence parser (PR#370 #12085).
    • More fine grained sequence attribute check message (PR#371).
    • Removed redundant check in skip_over (PR#373).
    • Workaround constexpr in noexcept VS2015 bug in entire x3::variant (PR#379).
    • Fixed calc4b example compilation (PR#384).
    • Minor code improvements (PR#374).
  • Spirit.Qi:

    • Fixed ADT support by permutation and sequence_or operator (PR#376).
    • Specialize iterator_source for random access (PR#383).
    • Removed redundant check in skip_over (PR#373).
  • Spirit.Karma:

    • Fixed UB in get_absolute_value function (PR#246).
    • Fixed use after scope bug if ADT getter returns by value (PR#375 #6126).
  • Spirit.Classic:

    • Fixed a regression introduced in PR#336 (PR#386).
    • Minor code improvements (PR#367).
• Stacktrace:

  • Fixed compilation on Solaris and other platforms that do qualify address as const in dladdr function (github 54).
  • Dropped dependency on Boost.LexicalCast.
• Test:

  • Boost.test v3.8 see the Changes log for more details.
  • Breaking changes

    • The master_test_suite_t object is no more copyable
  • New feature:

    • Dataset test case can now use command line parameters
  • Bug fixes and pull requests:

    • Trac tickets: #12095, #12953, #13504, #13525, #13528
    • Pull requests: PR#143, PR#145
• TypeIndex:

  • Dropped dependency on Boost.MPL.
• Uuid:

  • Breaking change: sha1 detail namespace header redirection for backwards compatibility was removed (PR#69).
  • Added support for std::hash (PR#67).
  • Added support for move semantics on random generators (PR#74).
  • Properly handle EINTR when acquiring entropy (PR#74).
  • Use getrandom(2) instead of getentropy(3) on linux (PR#75).

Compilers Tested

Boost's primary test compilers are:

• Linux:

  • Clang: 3.0, 4.0.1, 6.0.1
  • Clang, C++0x: 3.0
  • Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 6.0.1
  • Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.2, 6.0.1
  • Clang, C++17: 5.0.2, 6.0.1
  • GCC: 4.4.7, 4.5.3, 4.6.3, 5.4.0, 8.0.1
  • GCC, C++0x: 4.4.7
  • GCC, C++11: 4.7.3, 4.8.5, 4.9.4, 5.4.0, 6.4.0, 7.1.0, 8.0.1
  • GCC, C++14: 5.4.0, 5.5.0, 6.4.0, 7.1.0, 7.3.0, 8.0.1
  • GCC, C++17: 7.3.0, 8.0.1
  • Intel, C++14: 18.0
• OS X:

  • Apple Clang: 9.0.0, 9.1.0
  • Apple Clang, C++11: 9.0.0, 9.1.0
  • Apple Clang, C++14: 9.0.0, 9.1.0
  • Apple Clang, C++17: 9.1.0
  • Apple Clang, C++1z: 9.0.0
• Windows:

  • GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
  • GCC, C++0x: 4.6.4
  • GCC, C++11: 4.7.3, 4.8.1, 4.9.3
  • GCC, C++14: 5.1.0, 5.2.0, 5.3.0, 6.1.0, 6.2.0, 6.3.0, 6.4.0
  • GCC, C++17: 7.1.0, 7.2.0, 7.3.0
  • Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
• FreeBSD:

  • Clang: 4.0.0
  • Clang, C++11: 4.0.0
  • Clang, C++14: 4.0.0
  • Clang, C++1z: 4.0.0

Boost's additional test compilers include:

• Linux:

  • Clang: 3.0, 3.8.1, 3.9.1, 4.0.1, 5.0.2, 6.0.1
  • Clang, C++0x: 3.0
  • Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 6.0.1
  • Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.2, 6.0.1, 7.0.0
  • Clang, C++17: 5.0.2, 6.0.1
  • GCC: 4.4.7, 4.5.3, 4.6.3, 4.9.4, 5.4.0, 5.5.0, 8.0.1
  • GCC, C++0x: 4.4.7
  • GCC, C++11: 4.7.3, 4.8.5, 4.9.4, 5.4.0, 6.4.0, 7.1.0, 8.0.1
  • GCC, C++14: 5.4.0, 5.5.0, 6.3.0, 6.4.0, 7.1.0, 7.3.0, 8.0.1, 8.1.0
  • GCC, C++17: 7.3.0, 8.0.1
  • Intel, C++14: 18.0
• OS X:

  • Apple Clang: 9.0.0, 9.1.0
  • Apple Clang, C++11: 9.0.0, 9.1.0
  • Apple Clang, C++14: 9.0.0, 9.1.0
  • Apple Clang, C++17: 9.1.0
  • Apple Clang, C++1z: 9.0.0
• Windows:

  • GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
  • GCC, C++0x: 4.6.4
  • GCC, C++11: 4.7.3, 4.8.1, 4.9.3
  • GCC, C++14: 5.1.0, 5.2.0, 5.3.0, 6.1.0, 6.2.0, 6.3.0, 6.4.0
  • GCC, C++17: 7.1.0, 7.2.0, 7.3.0
  • Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
• FreeBSD:

  • Clang: 4.0.0
  • Clang, C++11: 4.0.0
  • Clang, C++14: 4.0.0
  • Clang, C++1z: 4.0.0

Acknowledgements

Daniel James, Vladimir Prus, and Marshall Clow managed this release.