What dependencies are listed when you run objdump on the dll with the error?

I had used objdump to look at the Glib.xs.dll dependencies, and saw nothing suspicious. But I hadn't recursed to look any deeper.
I probably should have taken the time to point out that this error appears only when the test files are run under Test::Harness.
If I run (eg) perl -Mblib t/00-basic-types.t then, instead of getting that error, I get the result that I expect: 
1..0 # SKIP Need the test libraries

[download]
I spent some time (about 5 years ago) trying to get the test libraries to build - but without success. (IIRC, the building of those libraries relied on python. Little surprise to me that python couldn't do that ... and even less concern.)

The good news is that ditching Strawberry's pkg-config.bat in favour of msys2's mingw64/pkg-config.exe has worked a treat.
Not only has it eliminated the need to set CPATH and LIBRARY_PATH environment variables, but Gtk3 is now usable. (Instead of all 22 Gtk3 test scripts crashing, 19 of them now pass all tests - same as with my own perl-5.38.0 build.)

I haven't yet properly dealt with the way that the G-I-O-0.050 test suite misbehaves, but it's looking to me (at the moment) that this misbehaviour is of little consequence,

Cheers,
Rob

In reply to Re^12: gmake error on Glib compile by syphilis
in thread gmake error on Glib compile by MikeMc69

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