I'm learning DirectX and rust and i want to use the DX Agility SDK in my project. In order to do so i need to export two symbols in the final executable so that DirectX can load the best dll available in the system as stated in this guide.
This is what i tried:
#[used]
#[no_mangle]
#[export_name = "D3D12SDKVersion"]
pub static D3D12_SDK_VERSION: u32 = 711; // SDK 1.711.3-preview
Then I used the dumpbin tool to check if the executable contains the exported symbol (it didn't):
dumpbin .\test.exe /EXPORTS
Microsoft (R) COFF/PE Dumper Version 14.40.33521.0
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file .\test.exe
File Type: EXECUTABLE IMAGE
Summary
1000 .data
4000 .pdata
10000 .rdata
1000 .reloc
33000 .text
But I expect it to output something like this:
dumpbin .\test.exe /EXPORTS
Microsoft (R) COFF/PE Dumper Version 14.40.33521.0
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file .\test.exe
File Type: EXECUTABLE IMAGE
Section contains the following exports for WinLauncher.exe
00000000 characteristics
FFFFFFFF time date stamp
0.00 version
1 ordinal base
2 number of functions
2 number of names
ordinal hint RVA name
1 0 00030220 D3D12SDKVersion
Summary
1000 .data
4000 .pdata
10000 .rdata
1000 .reloc
33000 .text
I really have no idea how to set up the compiler and the build script to export those costants. Any help is really appreciated!
Rust by default does not export things from executables. There exists the -Z export-executable-symbols nightly flag that can be passed to rustc (e.g. cargo +nightly rustc -- -Zexport-executable-symbols) that does export them, but on stable I don't believe this can be done.