CppInterOp doesn't find stddef.h

[maleadt]

It may be a little early for filing issues, so stop me if I should just wait, but I encountered the following when testing the basic example:

julia> Cpp.Declare("""
       #include <iostream>
       #include <vector>
       """)
In file included from <<< inputs >>>:1:
In file included from input_line_2:1:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/iostream:41:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/ostream:40:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/ios:40:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/iosfwd:42:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/postypes.h:40:
In file included from /usr/lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/cwchar:44:
/usr/include/wchar.h:35:10: fatal error: 'stddef.h' file not found
   35 | #include <stddef.h>
      |          ^~~~~~~~~~

Relevant copies of stddef.h on my system (Arch Linux) are in:

/usr/include/linux/stddef.h
/usr/lib/clang/17/include/stddef.h
/usr/lib/gcc/x86_64-pc-linux-gnu/13.3.0/include/stddef.h

[Gnimuc]

Configuring a JLL-compatible-binary-build environment is tricky(see how we did in Clang.jl). I'm still working on it.

If you want to play with it a bit, you can pass -v to Cpp.CreateInterpreter(["-v"]) to get the list of wrong search paths the compiler used.

[Gnimuc]

@maleadt This should be fixed now. But the Linux CI keeps failing...

https://github.com/Gnimuc/CppInterOp.jl/actions/runs/9367490416/job/25787279012#step:9:141

[maleadt]

Thanks, I'll try this out.

I guess the goal would be do redistribute necessary headers as a JLL instead of picking them up from the system? Especially for use on Windows.

[maleadt]

But the Linux CI keeps failing...

https://github.com/Gnimuc/CppInterOp.jl/actions/runs/9367490416/job/25787279012#step:9:141

Symbols not found: [ llvm_orc_registerEHFrameSectionWrapper ]

That's LLVM being broken: llvm/llvm-project#74671
Also see maleadt/LLVM.jl#405. I haven't found a workaround...

[maleadt]

Thanks, the issue reported here is fixed. It "just" triggers the ORC bug now:

julia> Cpp.Declare("#include <iostream>")
Failed to execute via ::process:Symbols not found: [ llvm_orc_registerEHFrameSectionWrapper ]
1

julia> Cpp.Process("""std::cout << 42 << std::endl;""")
Failed to execute via ::process:Symbols not found: [ llvm_orc_registerEHFrameSectionWrapper ]
1