RE: Using libraries with GNU C for MPC555

THANKS Dan!

 

That did it. I missed the significance of the difference between -L and -l
(upper and lower case L) in the online GNU documentation. Once I put the
searchpath in -L and the library name in -l I was in business. 

 

That cleaned up a lot of unresolved references the linker was struggling
with. I just have to fix the remaining linker issues and I've got an
executable. Linkers sure are picky!

 

Thanks again,

 

Dave

 

 

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From: [email protected] [mailto:[email protected]] On Behalf Of
Dan Fowell
Sent: Thursday, July 14, 2005 7:34 AM
To: [email protected]
Subject: RE: [MPC500] Using libraries with GNU C for MPC555

 

I don't use stdio or printf, but I do link in a library called libc.a (which
has sprintf, atoi, and many others).  My link command looks as follows:
powerpc-elf-ld.exe -g -t --verbose -Trom.lnk -o main.elf startup.o serial.o
main.o hdw.o -L../lib -lc

It's been a few years, but I think the -L tells it to link in the libraries,
I specify the location of the library "../lib" and then I specify which
library "-lc" which tells it to link in the c library (there is a libm.a and
a libg.a as well).  So from where I compile, my libc.a file is back a
directory and then in a "lib" folder I created.
Hope that helps.

Dan





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