embedded gcc linker issue--trying to build for m68000 cpu

Jim · 2009-11-03T00:24:03+00:00

Hi,I'm using the free Code Sourcery Lite gcc for m68k for a home projectthat involves a micro with 68000 cpu core. I added -lgcc to thelinker flags to resolve an issue with __divsi3. However, now I getthe following linker error:c:/program files/codesourcery/sourcery g++ lite/bin/../lib/gcc/m68k-elf/4.2.1/../../../../m68k-elf/bin/ld.exe: m68k:isa-a:nodivarchitecture of input file `c:/program files/codesourcery/sourcery g++lite/bin/../lib/gcc/m68k-elf/4.2.1libgcc.a(_divsi3.o)' isincompatible with m68k:68000 outputMy ccompiler flags are:CFLAGS =-m68000 $(INCLUDES)CFLAGS += -fno-exceptionsCFLAGS += -Wall -Wa,-m68000CFLAGS += -ggdbMy linker flags are:LFLAGS = $(CFLAGS) -Wl,-Map,$(basename $@).map,--crefLFLAGS += -nostdlibLFLAGS += -nostartfilesLFLAGS += -nodefaultlibsLFLAGS += -lgccCodeSourcery is "for" Coldfire which (I think) has a richerinstruction set than the 68000 cpu I have. If this is true and thatlib is built with that instruction set, it wouldn't be compatible withmy object code. I think this is what the error is saying. I have anold Linux box with v2.2 Linux on it, so I COULD build my own crosscompiler for WinXP, or I could try the cygwin deal and build it onWinXP, but let's face it, either would be a real pain. Does anyonehave any better ideas?Thanks much,Jim

Nov 03, 2009 20 Replies

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David Brown 16 years ago

Installing cygwin isn't hard, unless you bump into problems with incompatible versions of cygwin1.dll...

Well done! Building gcc is not as hard as it used to be, but it is still not for the faint of heart. It is somewhat like fixing your own car instead of taking it to the garage - it takes time, and you can get pretty stressed and dirty in the process, but it's fun if you like that sort of thing and you get a sense of achievement in the end.

Good advice.

Thanks for the feedback.

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