Enable Auto-Loading Support in Root/LLVM

[SahilPatidar]

This Pull request:

In this PR, I have attempted to integrate auto-loading changes from PR, which were initially implemented based on Lang Hames' suggestions for out-of-process execution. Here, I have applied the same logic to root cling for in-process execution. These changes are in the very early stages of auto-loading development and require further improvements and potential design refinements. Suggestions and feedback are highly encouraged!

Changes or fixes:

Checklist:

• tested changes locally : (Only ctest -R cling )
• updated the docs (if necessary)

This PR fixes #

[github-actions]

Test Results

    17 files      17 suites   4d 6h 20m 58s ⏱️
 2 722 tests  2 721 ✅ 0 💤 1 ❌
44 831 runs  44 830 ✅ 0 💤 1 ❌

For more details on these failures, see this check.

Results for commit 5259660.

♻️ This comment has been updated with latest results.

[SahilPatidar]

Ok, I'll need to find a way to move some of Cling's platform utilities to ORC to resolve the build failures on other platforms.

[SahilPatidar]

@bellenot do you understand what this error is about in the Windows build:

C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um\winnt.h(169,1): error C1189: #error:  "No Target Architecture" [C:\ROOT-CI\build\interpreter\llvm-project\llvm\lib\ExecutionEngine\Orc\Shared\LLVMOrcShared.vcxproj]
    (compiling source file '../../../../../../../../src/interpreter/llvm-project/llvm/lib/ExecutionEngine/Orc/Shared/AutoLoadDyLoader.cpp')```

[vgvassilev]

@bellenot do you understand what this error is about in the Windows build:

C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um\winnt.h(169,1): error C1189: #error:  "No Target Architecture" [C:\ROOT-CI\build\interpreter\llvm-project\llvm\lib\ExecutionEngine\Orc\Shared\LLVMOrcShared.vcxproj]
    (compiling source file '../../../../../../../../src/interpreter/llvm-project/llvm/lib/ExecutionEngine/Orc/Shared/AutoLoadDyLoader.cpp')```

Internet tells me something as weird as we are missing some include...

[bellenot]

@bellenot do you understand what this error is about in the Windows build:

C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\um\winnt.h(169,1): error C1189: #error:  "No Target Architecture" [C:\ROOT-CI\build\interpreter\llvm-project\llvm\lib\ExecutionEngine\Orc\Shared\LLVMOrcShared.vcxproj]
    (compiling source file '../../../../../../../../src/interpreter/llvm-project/llvm/lib/ExecutionEngine/Orc/Shared/AutoLoadDyLoader.cpp')```

Well, I don't know, but it sounds like a missing flag for the architecture (Win32/x86/x64 or whatever is the proper syntax)...