Re: C Start-Up shared vs static

[Charles Coldwell <coldwell at frank dot harvard dot edu>]

On Dec 4, 2009, at 5:32 PM, Mike Frysinger wrote:

> On Friday 04 December 2009 15:40:25 Charles Coldwell wrote:
> > Inspired by what I read in the linker script /usr/lib/libc.so.6, I  
> > tried
> > replacing "-lc" in the command line above with
> >
> > /Volumes/cross/arm-none-linux/lib/libc.so.6
> > /Volumes/cross/arm-none-linux/usr/lib/libc_nonshared.a
> > --as-needed
> > /Volumes/cross/arm-none-linux/lib/ld-linux.so.2
> > --no-as-needed
> >
> > This works, and builds an executable that runs on my target  
> > system.  So it
> > would appear that all the binaries are in the right places, and  
> > contain
> > the right bits, but the gcc driver routines aren't using them  
> > correctly.
> > Could this be a problem in gcc specs?
>
> more likely a problem with your install and/or configure.  your
> /Volumes/cross/arm-none-linux/ needs to be configured as the  
> toolchain's
> sysroot.

Oh, but in the part of my message above that you snipped was the  
complete command

$ arm-none-linux-gcc -v -march=armv5te -mtune=xscale -msoft-float  -o  
hello hello.o
[ ... ]
 /Volumes/cross/usr/libexec/gcc/arm-none-linux/4.3.3/collect2
--sysroot=/Volumes/cross/arm-none-linux --eh-frame-hdr -dynamic-linker
/lib/ld-linux.so.2 -X -m armelf_linux -p -o hello
/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/../../../../arm-none- 
linux/lib/crt1.o
/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/../../../../arm-none- 
linux/lib/crti.o
/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/crtbegin.o
-L/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3
-L/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/../../../../arm- 
none-linux/lib
-L/Volumes/cross/arm-none-linux/lib
-L/Volumes/cross/arm-none-linux/usr/lib
hello.o -ldl -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as- 
needed -lgcc_s --no-as-needed
/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/crtend.o
/Volumes/cross/usr/lib/gcc/arm-none-linux/4.3.3/../../../../arm-none- 
linux/lib/crtn.o
[ ... ]

And doesn't the "--sysroot=/Volumes/cross/arm-none-linux" switch on  
the collect2 command above do what you recommend?

--

Charles M. Coldwell, W1CMC
"Turn on, log in, tune out"
Winchester, Massachusetts, New England (FN42kk)

GPG ID:  852E052F
GPG FPR: 77E5 2B51 4907 F08A 7E92  DE80 AFA9 9A8F 852E 052F