[lld] [LLD] [COFF] Print a warning when using /dependentloadflag without load config (PR #117400)

[Mateusz Mikuła via llvm-commits]

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@@ -29,3 +30,4 @@ FAIL: lld-link: error: /dependentloadflag: invalid argument: zz
 FAIL-RANGE: lld-link: error: /dependentloadflag: invalid argument: 0xf0000
 FAIL-NOARG: lld-link: error: /dependentloadflag: no argument specified
 
+WARN-NOBASE: lld-link: warning: _load_config_used not found, /delayloadflag will have no effect
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mati865 wrote:

> Please add a test to check that no warnings are emitted if `_load_config_used` exists.

Good point, added.

> And to be really clear, ideally that test should have the `_load_config_used` symbol in a static library, so it’s not explicitly referenced or pulled in, other than lld doing it implicitly at the end.

Just to confirm. It'd be enough to turn `ldcfg.obj` into a static library and directly pass that library to LLD?

https://github.com/llvm/llvm-project/pull/117400