According to msdn (https://learn.microsoft.com/en-us/cpp/build/reference/gl-whole-program-optimization?view=msvc-160&viewFallbackFrom=vs-2019)
.obj files produced with /GL will not be available to such linker utilities as EDITBIN and DUMPBIN.
Is there any publically available specification on the .obj files generated when using /GL (To use, for example, if someone wanted to write a custom link.exe replacement)?
Tangentially related question: How to determine the major compiler version from .obj files compiled with /GL?