I am porting an application from D3D7 to D3D10.
Even though the C interface for D3D10 exists, It does not seem to be visible when compiling/linking.
The D3D7 version uses the C interface and I do not see anything different.

Here are my build commands for the D3D10 file:
"arguments": ["D:\Programme\Visual Studio 2022\VC\Tools\MSVC\14.40.33807\bin\HostX64\x86\cl.exe", "/c", "/nologo", "/Zi", "/FS", "/Fdbuild\windows\x86\debug\compile.trng2.pdb", "/W3", "/Od", "/std:c11", "/MTd", "/Isrc", "/DXAUDIO2_HELPER_FUNCTIONS", "/DWIN32_LEAN_AND_MEAN", "/DNOMINMAX", "/D_CRT_SECURE_NO_WARNINGS", "/DCINTERFACE", "/DDO_LOG", "/D_DEBUG", "/D_USE_MATH_DEFINES", "/IE:\REDACTED\build\.packages\z\zlib\v1.3.1\55fd28c48bc34b35b89c569e2dd7bcce\include", "/IE:\REDACTED\build\.packages\x\xaudio2redist\1.2.11\163bc5c6e48e49d98ea66f724aede6bf\include", "/Fobuild\.objs\REDACTED\windows\x86\debug\REDACTED\specific\d3d10\d3d10info.c.obj", "REDACTED\specific\d3d10\d3d10info.c"],

As you can see, I am specifying C11 as well as CINTERFACE, but i receive linker errors and a compiler warning.

d3d10info.c(18): warning C4013: ‘IDXGIFactory_EnumAdapters’ undefined; assuming extern returning int

d3d10info.c.obj : error LNK2019: unresolved external symbol _IDXGIFactory_EnumAdapters referenced in function _EnumAdapters