This is a new major version with a whole bunch of new features and bug fixes. The biggest features are support for translating some preprocessor directives like: #define for simple constants and function like macros. This release also adds support for a new platform, Windows.

Here's the full changelog:

New/Changed Features

• Support for simple defines (like #define FOO 1)
• Translation of defines to functions (like #define FOO(a, b) a + b)
• Support for preprocessor token-pasting operator (##)
• Support for translation of whole packages (--package CLI option)
• Support for translation of preprocessor constants in array sizes
• Support for global comments and comments inside structs and enums
• Detecting collisions of renamed tag-space names (struct name_t ...) with existing ones
• Special treatment of a comment before header guard
• Support for removing excessive newlines and keeping original spacing
• Basic unit tests were added
• Cucumber tests were replaced with D-based tests
• Statements are now translated in the original order as the input file
• Multiple input files can be processed at once
• Extend a functionality that automatically replaces aliases to basic types with their D equivalents
• Add a switch --reduce-aliases which disables/enables the above functionality
• Add a switch --alias-enum-members which enables generation of aliases for enum members in the global scope
• Add a switch --translate-macros which can disable the translation of C macro definitions
• Add the libclang bindings as a test case
• Add support for Microsoft Windows
• Run Windows tests on AppVeyor
• Handle complex floating-point types.
• Use the new alias syntax (alias Y = X) in the output
• Support for custom global attributes (e.g. nothrow, @nogc)
• Add support for building with LDC
• Bump the minimum requirement D compilers to their latest version
• Always test using the latest version of DMD and LDC, including beta and nightly builds
• Bump the minimum requirement of libclang to 7.0.0
• Automatically generate the libclang bindings using DStep
• Add a switch --rename-enum-members, which enables stripping of superfluous prefixes from enum members.
• Add a switch --normalize-modules, which enables changing the names of modules to the D conforming form.
• Add support for bit fields.

Bugs Fixed

• Issue 2: Self alias should be removed bug
• Issue 8: Typedef and anonymous structs
• Issue 10: Embedded struct not generated
• Issue 20: #define (simplest cases only?)
• Issue 21: wchar_t should be translated to core.stdc.stddef.wchar_t
• Issue 28: Crashes if fed nonexistent header
• Issue 29: Don't name anonymous enums
• Issue 30: Single space inserted after function names
• Issue 38: Spurious generation of variadic args rather than implicit void
• Issue 39: Recognize and translate __attribute__((__packed__))
• Issue 46: Generating code that will not compile
• Issue 47: Treatment of #define enhancement
• Issue 50: struct typedef generates recursive alias bug
• Issue 59: Shouldn't dstep exit with status code when there is some kind of error
• Issue 83: New multiline translation
• Issue 85: dstep not converting const T x[] to const (T)* x
• Issue 98: dstep segfaults: Unhandled type kind cast(CXTypeKind)119
• Issue 107: Handle typedef of opaque structs.
• Issue 114: Crash on recursive typedef.
• Issue 116: Option --space-after-function-name doesn't work with function pointer syntax.
• Issue 117: fatal error: 'limits.h' file not found.
• Issue 123: Missing import for usage of #define constant.
• Issue 137: struct member expansion.
• Issue 138: Repeated declarations cause problems.
• Issue 140: On enums and scope.
• Issue 141: Use of _IO, _IOR, etc.
• Issue 154: Falling back to blunt pre-processor phase.
• Issue 157: Keep enum members when used as enum values.
• Issue 158: Keep literals for enum values.
• Issue 160: Translating typedef of function pointer doesn't take line length into consideration.
• Issue 166: macro used in struct declaration not translated properly
• Issue 192: Fail to convert nuklear
• Issue 199: #define of types results in incorrect output
• Issue 202: Invalid translation of C struct with typedef to D.
• Issue 203: Octal constants not handled correctly
• Issue 204: C INT_MAX not handled.
• Issue 214: Cast inside macro not properly translated
• Issue 216: can't alias to existing D type