I downgraded to winlib's gnu/gcc 15.1.0 compiler. Then, I used "mingw32-make.exe -f makefile.gcc CFG=64 BUILD=Release SHARED=1 MONOLITHIC=1" to successfully build wx3.2.8.
What is the configure/make method you used for codeblocks? The usual method, that I use, is to execute a host codeblocks and then open the source wx32_64.cbp. Now, I'm getting failures because wxmsw32u cannot be found. Any ideas why it cannot find that dll file?