Kotlin-native: Linker error using FOLDERID_Documents

[benasher44]

In a mingw target, we want to use FOLDERID_Documents from platform.windows.*, but doing so causes a linker error: undefined reference to 'FOLDERID_Documents'. I've attached a minimal sample project that reproduces the error. It would be great to either resolve this in Kotlin-Native or learn what linker flag we should be using.

winTest.zip

[benasher44]

We tried -lshell32, which didn't work (suggestion from slack).

[msink]

--- a/build.gradle
+++ b/build.gradle
@@ -15,6 +15,7 @@ kotlin {
             outputKinds("executable")
             // Change to specify fully qualified name of your application's entry point:
             entryPoint 'sample.main'
+            linkerOpts '-luuid'
         }
     }
     sourceSets {

[benasher44]

@msink that did it thanks!. @olonho is this something that can be fixed in K/N?

[olonho]

In theory, we could have that in default DLLs to link, but in fact I think it's better to somewhat split Windows platform libs somehow, instead of always linking everything. Do you have an idea how it better be done?

[msink]

AFAIK, libuuid.a does not link any dll.

[benasher44]

That makes sense. I think splitting up platform.windows.* into sub-packages based on the libraries the symbols come from would help. Initially, we could use that as a hint to know which linker flags we need. In the future, maybe a plugin could lean on that to know which linker flags to add?

[olonho]

OK, as quick workaround let's do d5096cbb1e14ed4f015cd63533f1b05a80fc03d4, but generally effort on splitting Windows platform lib from people more familiar with Win32 API would be awesome.