__RelocCode error

Hi everyone,

I apologise in advance for the vagueness of this post; I’m not at my machine right now but I still wanted to get the question out there.

I’m trying to build a Utility, so following some previous advice I’m using the CUtil makefile and am including UtilLib. Everything builds but it doesn’t link; the linker doesn’t like “__RelocCode” (which is referenced by the UtilLibAsm file).

This article states that “The linker will automatically generate a special __RelocCode function which will perform pointer fixup on any pointers contained within the image.” However, this doesn’t seem to be happening. I’ve probably missed a step somewhere; any ideas?

I’ll provide some code and verbatim AMU output once I’m home.

Try this in your makefile:

LDFLAGS = -RMF

I think you’ll also need to set UTIL_LIBS to be empty to make sure the code isn’t linked with the C library. (See the ZLib decompression stub for compressed ROMs)

I’ll update the wiki.

Actually, the DDE manual suggests LDFLAGS = -util should work as well, and would probably be more appropriate for your use case (for some reason CUtil is using -bin (edit: possibly because -util is a fairly recent feature? https://www.riscosopen.org/viewer/view/bsd/RiscOS/Sources/Lib/UtilLib/doc/UtilLib?rev=1.1.1.1#l35))

Possibly CUtil is also taking care of the shared C library problem, by making sure ANSILib is used instead (which is essentially a statically linked version of the SCL). Just that in my case (decompression stub) I didn’t want any C library code, since there’s no OS for the library to call into!

I thought I saw an existing reference to -util in the makefile, but I’ll double-check. I’m using ANSILib at present (since the makefile uses it by default) but I don’t think I’m doing anything that depends on it. Getting rid of it will be “step 2” (which is really going to be about step 47 at this rate).

That was it! Link was indeed missing -util. And it works without ANSILib too!

Thanks :)