These are not referenced in SConstruct. messagebox.c uses C linkage for
symbols that would be referenced from a C++ file, so this has likely
been broken since the common code moved to C++.
lengthof was added to provide the size of C arrays. C++17 std::size is
now available, and can serve the same purpose. Remove the custom
lengthof.
The generated code is the same in both cases, other than the change in
line numbers caused by removal of the #include directives.
This was once a compatibility shim, but compiler support for std::begin
has been required since 5e434cbe95 and no
issues have been reported. Flatten the include tree by removing this
header and using the STL names directly.
The minimum supported compiler versions now provide a depth-efficient
implementation of std::make_index_sequence, which removes the last
reason to carry a private implementation. In the case of clang, it
appears to have a special compiler intrinsic used to implement its
std::make_index_sequence.
Switch to the compiler-provided version for both gcc and clang.
Visual Studio 2013 support was experimental and never worked due to
missing C++11 support in the compiler and various compiler bugs that
caused it to crash on some of the more complicated files. Microsoft
never issued sufficient patches to get Visual Studio 2013 to compile
Rebirth successfully.
Remove the Visual Studio 2013 files and add files to build Rebirth with
Visual Studio 2017. Visual Studio 2017 support is also experimental and
is also currently broken. Among the known problems:
- Visual Studio 2017's C99 preprocessor support, like those of predecessor versions, is deficient regarding variadic macros, causing it to reject valid constructs with confusing error messages.
common\include\window.h(170): error C2672: 'con_puts_literal': no matching overloaded function found
common\include\window.h(170): error C2780: 'void con_puts_literal(const con_priority,const char (&)[len])': expects 2 arguments - 1 provided
common\include\console.h(44): note: see declaration of 'con_puts_literal'
common\include\window.h(170): error C2664: 'void con_printf(con_priority,const char *,...)': cannot convert argument 1 from 'const char [54]' to 'con_priority'
Visual Studio 2017's preprocessor expanded this line to:
( ((void)(("%s:%u: sending event %s to window of dimensions %dx%d"))), (sizeof("file, line, e, c.cv_bitmap.bm_w, c.cv_bitmap.bm_h") == 1) ? (con_puts_literal(("%s:%u: sending event %s to window of dimensions %dx%d"))) : (con_printf(("%s:%u: sending event %s to window of dimensions %dx%d") ,file, line, e, c.cv_bitmap.bm_w, c.cv_bitmap.bm_h)) );
gcc-5.4.0's preprocessor expanded this line to:
( ((void)(("%s:%u: sending event %s to window of dimensions %dx%d"))), (sizeof("file, line, e, c.cv_bitmap.bm_w, c.cv_bitmap.bm_h") == 1) ? (con_puts_literal(CON_DEBUG ,("%s:%u: sending event %s to window of dimensions %dx%d"))) : (con_printf(CON_DEBUG ,("%s:%u: sending event %s to window of dimensions %dx%d") , file, line, e, c.cv_bitmap.bm_w, c.cv_bitmap.bm_h)) );
Note the absence of the leading "CON_DEBUG," in the Visual Studio
version.
- Visual Studio 2017 sometimes disallows inner classes access to private typedef symbols in the containing class. Both gcc and clang permit this and the standard says this should work. This is shown mixed in as part of the next error.
- Visual Studio 2017's cl.exe crashes processing some files. Including "segment.h" is sufficient to crash cl.exe. Before crashing it prints:
common\include\fwd-valptridx.h(200): error C2833: 'operator integral_type' is not a recognized operator or type
common\include\fwd-valptridx.h(201): note: see reference to class template instantiation 'valptridx<managed_type>::magic_constant<constant>' being compiled
common\include\fwd-valptridx.h(202): note: see reference to class template instantiation 'valptridx<managed_type>' being compiled
common\main\fwd-segment.h(19): note: see reference to class template instantiation 'std::integral_constant<::size_t,9000>' being compiled
common\include\fwd-valptridx.h(200): error C2059: syntax error: 'newline'
common\include\fwd-valptridx.h(200): error C2334: unexpected token(s) preceding '{'; skipping apparent function body
common\main\fwd-segment.h(48): error C2248: 'valptridx<d2x::segment>::specialized_types': cannot access private typedef declared in class 'valptridx<d2x::segment>'
common\include\fwd-valptridx.h(87): note: see declaration of 'valptridx<d2x::segment>::specialized_types'
common\main\fwd-segment.h(46): note: see declaration of 'valptridx<d2x::segment>'
common\main\fwd-segment.h(48): note: see reference to class template instantiation 'valptridx<d2x::segment>::magic_constant<65534>' being compiled
common\main\fwd-segment.h(48): fatal error C1903: unable to recover from previous error(s); stopping compilation
This list is not exhaustive. The project was abandoned upon
encountering a compiler crash suspiciously similar to the one seen when
using Visual Studio 2013 to compile this code. No one should expect
Visual Studio 2017 version 15.0.0+26228.9 to successfully compile
Rebirth, but these files are published in the hope that future patches
fix the problems in Visual Studio 2017.
