Compile built-in functions

[dikdom]

Hello,
I have a short (but very informative) discussion with @feilipu under his z88dk-libraries repo.
My last two question remained unanswered, could someone pls help me out here/there? (feilipu/z88dk-libraries#2 (comment))

• is the IX register usage silently replaced with IY during compile/link time when the -mz80_ixiy switch used or an intermediate asm file is generated here also?
• is there a way to make the zcc (or its used compiler/linker/etc..) to keep this intermediate .asm file (even in tmp dir) and leave there after a successful build?

[suborb]

Sorry, I'm having a slightly busy week.

It's a silent switch made at assembly time (with a 0xdd <-> 0xfd made in the object file). Note issue #2320 prevented mixing object files with different -IXIY options .

The intermediate files can be left if you supply -no-cleanup but there's a lot of files. It's probably easier to split the generation into multiple steps if you care about the .asm file.

%.o: %.asm
    zcc ... -o $@

%.asm: %.c
   zcc ... -o $@

[feilipu]

Closed with feilipu/z88dk-libraries#2