[Bug 59328] New: Microsoft Extensible Storage Engine (ESE) not compiling with WineLib

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59328

            Bug ID: 59328
           Summary: Microsoft Extensible Storage Engine (ESE) not
                    compiling with WineLib
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winelib
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Hello,

has anyone considered implementing the Microsoft Extensible Storage Engine
(ESE) API (esent.dll)
(https://learn.microsoft.com/en-us/windows/win32/extensible-storage-engine/ex...
I know that some Windows apps use this database engine to store their data,
instead of sqlite.

Microsoft has open-sourced this Windows built-in library a couple of years ago,
so porting should not be that hard:
https://github.com/microsoft/Extensible-Storage-Engine

I tried to compile the project with WineLib on Linux myself, but I failed
miserably. Their makefiles target Visual Studio build tools / msbuild heavily.
I was able to remove makefile tests for Visual Studio platform:

if("${CMAKE_GENERATOR}" MATCHES "Visual Studio")
    if("${CMAKE_GENERATOR_PLATFORM}" MATCHES "x64")
....
else()
    message(FATAL_ERROR "NOTE: NOT setting 64-bit OR 32-bit symbols")

Then they are looking for the message compiler (mc.exe):

 find_program(CMAKE_MESSAGE_COMPILER mc.exe HINTS "${sdk_bindir}")
    if (NOT CMAKE_MESSAGE_COMPILER)
        message(FATAL_ERROR "message compiler not found: required to build")

I tried to create an alias for mc.exe pointing to wmc (Wine Message Compiler),
but their parameter set is incompatible.
After rewriting the makefiles, I stumbled upon hundreds of issues with GCC
incompatibility with the _Field_size_opt_ C macro:

typedef struct
{
    unsigned long                                   cbStruct;           // 
size of this structure (for future expansion)
    WCHAR                                           *szDatabaseName;    // 
(optional) original database path
    WCHAR                                           *szNewDatabaseName; //  new
database path
    _Field_size_opt_( csetdbparam ) JET_SETDBPARAM  *rgsetdbparam;      // 
(optional) array of database parameters
    unsigned long                                   csetdbparam;        // 
number of elements in rgsetdbparam
    JET_GRBIT                                       grbit;              // 
recovery options
} JET_RSTMAP2_W;

GCC complains that the csetdbparam field is referenced in code before it is
defined, which is true, but Microsoft's MSVC compiler has no issues with this.

I could not get any further with porting the ESE library. Is there any simple
solution, please?

I think this library could/should become part of Wine one day.

Thanks,
Michael

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