haarer / toolchain68k Goto Github PK

So playing around with this, When compiling the m68k_example, I get the following:

appinit.c:26: undefined reference to `__sf_fake_stdin'

Not entirely sure what the cause of this is. I assume something with newlib, but not sure where to look.

any ideas?

Windows 10 (MSYS2).

The install_req_pkg_windows-latest.sh script is useful but may report the following issue.

looking for conflicting packages...
:: mingw-w64-x86_64-pkg-config and mingw-w64-x86_64-pkgconf are in conflict. Remove mingw-w64-x86_64-pkgconf? [Y/n]

It looks pkgconf is more recent, or is a new package to replace pkg-config. So, in theory, the script should use pkgconf.

The script works pretty well, it builds the newlib but not the libgcc and libstdc++ from gcc.

Windows 10 (MSYS2)

The install_req_pkg_windows-latest.sh script reports the following error:
grep: /mingw64/x86_64-w64-mingw32/include/usb.h: No such file or directory
ln: failed to create symbolic link '/mingw64/x86_64-w64-mingw32/include/': No such file or directory

usb.h may be present in another directories.
In my case, usb.h is in the /mingw64/include directory.

The compiler makefile for the 68k_example is set for -O0, which is basically no optimization.

I used the example skeleton for my CPU, and ported it over to the MC68010. Works fine, but I wanted to optimize the code a bit more for speed.

-O1 works fine. but -O2 or -O3, I get an Overlap Error:

m68k-elf-gcc -m68010 -I. -DREENTRANT_SYSCALLS_PROVIDED -D_REENT_SMALL -Wall -O2
-std=gnu99 -g -c -o glue.o glue.c
m68k-elf-gcc -m68010 -I. -DREENTRANT_SYSCALLS_PROVIDED -D_REENT_SMALL -Wall -O2
-std=gnu99 -g -c -o uart.o uart.c
m68k-elf-gcc -c -Wa,-adhlns=crt0.S.lst crt0.S -o crt0.o
m68k-elf-gcc -c -Wa,-adhlns=vector.S.lst vector.S -o vector.o
"---> link project to RAM ..."
m68k-elf-gcc crt0.o vector.o main.o appinit.o glue.o uart.o -m68010 -g -nostart
files -Wl,--script=ram.ld,-Map=CPU.map,--allow-multiple-definition -o CPU.elf
c:/msys64/home/user/toolchain68k/toolchain-m68k-elf-current/bin/../lib/gcc/m68k-
elf/9.2.0/../../../../m68k-elf/bin/ld.exe: section .text.startup LMA [0000000000
012a00,0000000000012a41] overlaps section .data LMA [0000000000012a00,0000000000
012f0f]
collect2.exe: error: ld returned 1 exit status
make: *** [CPU.elf] Error 1

I left the ram.ld script pretty much alone, I did change the memory locations and I even tried increasing the size to the max size of my system, but it didnt change anything.

Edit: This is with your stock toolchain, built as-is.