Adding newlib to existing GCC, prefix?

Vitus Jensen
Wed Apr 7 22:27:00 GMT 2004

Hi Jeff,

> Jeff Johnston wrote:
> > Vitus Jensen wrote:
> >>> Vitus Jensen wrote:
> >>>
> >>>> I'm trying to add newlib-1.12.0 to an existing port of GCC.  That GCC
> >>>> was produced some year ago by a collegue no longer available.  He
> >>>> used the coldfire project ( to
> >>>> crosscompile from Windows 2000 (cygwin B20) to our own
> >>>> hardware/software plattform which uses Motorola
> >>>> DragonBall and a propritary OS. The compiler itself runs fine, it's 
> >>>> just that now I need a CRT...

> make install-target-newlib MAKE="<cygwin's make.exe> INSTALL=\"<cygwin's 
> install.exe>\""

I'm actually one step ahead: deleted everything, rearranged path, configure,
make all, make install, got lib, created hw9012.ld, linked with libnosys.a.

m68k-coff-gcc -nostdlib test.c -Thw9012.ld -Wl, 
test.c: In function `sbrk':
test.c:4: warning: return makes pointer from integer without a cast
C:\tmp\ccXHJywX.o(.text+0x3c):test.c: undefined reference to `__main'
\gcc-m68k\m68k-coff\lib/libc.a(exit.o): In function `exit':
//T/C/coldfire/newlib-1.12.0/newlib/libc/stdlib/exit.c:102: undefined
reference to `_exit'

I can deal with those symbols when I modify libgloss.  This leads to the
next question: how do I add our OS to libgloss?  For the lib I could just hack
away in the libnosys directory, but as I probably need my own crt-hwdos.S
anyway I could use a seperate directory.  Or better place the code into
libgloss/m68k.  Where do I add my filenames?
It's a complete OS with trap entries but obviously not already implemented


Dipl-Ing Vitus Jensen
Tischlerstr. 8, D-30916 Isernhagen
Tel +49-5136-893002, Fax +49-5136-893003

More information about the Newlib mailing list