Re: How to use newlib

["Michael K. Elwood" <mkelwood at qsicorp dot com>]

If you have the source package for newlib, look in the libgloss/doc
directory for the "porting.texi" document. You will likely find this
useful.

MKE

Sascha Ziemann wrote:
> 
> "Michael K. Elwood" <mkelwood@qsicorp.com> writes:
> 
> | It doesn't look like you are linking libnosys.a correctly (which should
> | contain the OS routines that gcc is complaining about).
> |
> | Try using -lnosys instead of libnosys.a on your link command.
> 
> "Robert McNulty Junior" <sherlock_abc@netzero.net> writes:
> 
> | The right way to use the newlibs are as folllows.
> |
> | For libc: -lc
> | for libm: -lm
> |
> | Note, that is small L, not one (1)
> 
> Now I link with -lc and -lnosys, but there is still an error:
> 
> gcc -L. -static  hello.o -lc -lnosys  -o hello
> /usr/lib/crt1.o: In function `_start':
> /usr/lib/crt1.o(.text+0xe): undefined reference to `__libc_init_first'
> /usr/lib/crt1.o(.text+0x18): undefined reference to `_environ'
> ./libc.a(exit.o): In function `exit':
> /home/olivia/szi/software/smbproxy/1.1.1/bootdisk/newlib-1.8.2/newlib.build/libc/stdlib/../../../newlib/libc/stdlib/exit.c:70: undefined reference to `_exit'
> collect2: ld returned 1 exit status
> make: *** [hello] Error 1
> make: Target `all' not remade because of errors.
> 
> Isn't it wrong that gcc tries to link with /usr/lib/crt1.o, which does
> not belong to newlib, but to the glibc of my system?  I tried to link
> with -nostartfiles, but newlib seams to have no crt file and I get
> this error:
> 
> gcc -L. -static -nostartfiles  hello.o -lc -lnosys  -o hello
> /usr/local/i686-pc-linux-gnu/bin/ld: warning: cannot find entry symbol _start; defaulting to 08048080
> 
> My newlib tgz contains no documentation at all.  Is there somewhere
> an additional tgz with documentation?
> 
> Sascha