Re: Cross compile crapout

[Jonathan Andrews]

On Mon, 2012-01-23 at 20:30 -0500, Chet Ramey wrote:
> On 1/23/12 1:12 AM, Jonathan Andrews wrote:
> 
> > I needed a statically linked bash for testing an arm board. I did not
> > expect it to be nearly 3MB though ! It surprises me that a statically
> > linked bash is bigger than the entire busybox binary i've compiled, or
> > my kernel image for that matter. Is this bloat gcc, some failing of the
> > linker or bash itself?  
> 
> That's probably the size of the C library on your machine.  The only
> difference between a static bash and a `normal' bash is that the system
> libraries are linked in instead of being dynamically linked at run time.
Im not a gcc expect, I thought the idea of the linker was also to drop
unused code but this seems not to be true with gcc as default.  

http://www.google.com/url?sa=t&rct=j&q=gcc%20linker%20unused%20code&source=web&cd=5&ved=0CEYQFjAE&url=http%3A%2F%2Felinux.org%2Fimages%2F2%2F2d%2FELC2010-gc-sections_Denys_Vlasenko.pdf&ei=Tx8eT5mUGczRswaZju3eDA&usg=AFQjCNF3miTnzqYNsiiyei_SQDlDxG10TQ&cad=rja

http://gcc.gnu.org/ml/gcc-help/2003-08/msg00128.html

I've been trying to compile bash static with the extra parameters, no
joy so far - finger trouble on my part I expect.


> I built a minimal bash (--enable-minimal-config) on my machine (Mac OS X,
> where static linking isn't possible), and it ended up being about half
> as big as a bash-4.2.20 build.  I had to fix a few things to do it.
Maybe this is one of the things ?

I've applied the patches, tried this :

(script)
export CC=arm-softfloat-linux-gnu-gcc
./configure --build=i386-linux --host=arm-linux --enable-static-link 
--without-bash-malloc --enable-minimal-config
make


Get this :

arm-softfloat-linux-gnu-gcc  -DPROGRAM='"bash"' -DCONF_HOSTTYPE='"arm"' 
-DCONF_OSTYPE='"linux-gnu"' -DCONF_MACHTYPE='"arm-unknown-linux-gnu"' 
-DCONF_VENDOR='"unknown"' -DLOCALEDIR='"/usr/local/share/locale"' 
-DPACKAGE='"bash"' -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib   -g 
-O2 -c y.tab.c
./parse.y: In function 'shell_getc':
./parse.y:2399: error: label 'pop_alias' used but not defined
make: *** [y.tab.o] Error 1


Any ideas ?

Thanks,
Jon