Re: Linking

You need to explicitly link the other object files into the final elf as
well.
msp430-gcc -Os -Wall -g -mmcu=msp430f5438a main.o bluetooth.o comm.o
characters.o output.o -o main.elf

On Wed, 2013-04-17 at 20:20 -0400, Ian Chapman wrote:
> Hi all,
>      My Makefile produces all the dot.o files from the dot.c files with 
> a few warnings.  However the link stage fails to find the functions 
> called by main.c that are specified in the dot.h and defined in the 
> dot.c files and by then should be in dot.o files.
> Makefile
> CC=msp430-gcc
> CFLAGS=-Os -Wall -g -mmcu=msp430f5438a
> main : main.o bluetooth.o comm.o characters.o output.o
>      $(CC) $(CFLAGS) main.c -o main.elf
> main.o : main.c main.h
>      $(CC) $(CFLAGS) -c main.c
> etc
> 
> Result
> msp430-gcc -Os -Wall -g -mmcu=msp430f5438a main.c -o main.elf
> /tmp/ccx0kuof.o: In function `main':
> /home/stan/msp430/TDU/main.c:202: undefined reference to `vEnterCommandMode'
> /home/stan/msp430/TDU/main.c:203: undefined reference to `vSendCommand'
> collect2: ld returned 1 exit status
> make: *** [main] Error 1
> 
>      I guess I'm missing a flag to indicate that the dot.o files are in 
> the working directory but that should be the gcc default.  Any ideas?  Ian.
> 
> 
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analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
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