In the latest releases of llvm-mos-sdk, using the pce-cd target, declaring any global variable makes pce-mkcd fail with the following error:

Error: Don't know how to convert ELF file "main.elf" (00F82020 - 01804030) into binary file!

Minimal repro:

`
#define PCE_CONFIG_IMPLEMENTATION
#include <pce.h>

PCE_RAM_BANK_AT(128, 2);

// Comment me to fix the pce-mkcd error.
attribute((retain)) volatile uint8_t g_global_var;

[[noreturn]] int main(void)
{
while(true) {}
}
`
Build steps:

mos-pce-cd-clang++ -Tipl.ld main.cpp -o main.elf pce-mkcd hello.iso --ipl ipl.bin main.elf -v

This used to work in older versions of the SDK, around version 14 I think. In newer versions it fails. I tested 18.0, 20.0 and 21 and they fail.