Cann't find Cross Compiler in menuconfig?

Natanael Copa natanael.copa at gmail.com
Mon Sep 17 07:06:47 UTC 2007


On Mon, 2007-09-17 at 11:53 +0800, NalaGinrut wrote:
> Hello,everybody!
>     I'm a busybox-freshman.And I don't know how to compile busybox to be a 
> cross compile version.I mean an ARM cross compile busybox.
>     When I got into menuconfig,I cann't find the option 'Do you want to build 
> BusyBox with a Cross Compiler.',but it's on my book!
>     The cross-tools I used is arm-linux-gcc-3.3.2.While I make busybox-1.7.1 
> with 'CROSS_COMPILE	?= arm-linux-', I got an error message below:
> 
>   CC      applets/applets.o
> applets/applets.c:20:2: warning: #warning Static linking against glibc 
> produces buggy executables
> applets/applets.c:21:2: warning: #warning (glibc does not cope well with ld 
> --gc-sections).
> applets/applets.c:22:2: warning: #warning See 
> sources.redhat.com/bugzilla/show_bug.cgi?id=3400
> applets/applets.c:23:2: warning: #warning Note that glibc is unsuitable for 
> static linking anyway.
> applets/applets.c:24:2: warning: #warning If you still want to do it, remove 
> -Wl,--gc-sections
> applets/applets.c:25:2: warning: #warning from top-level Makefile and remove 
> this warning.
> applets/applets.c:26:2: #error Aborting compilation.
> make[1]: *** [applets/applets.o] 错误 1
> make: *** [applets] 错误 2
> 
> What should I do?

Read the compiler warnings.

> Please help.Thanks.

ok. glibc is unsuitable for statical linking and it will create buggy
binaries.  Try link it dynamically.

If you absolutely want a static linked busybox, try uclibc, which should
give you a smaller executable too.

If you still want to use glibc and still want to do static linking then
you can try to remove -Wl,--gc-sections from the compiler flags.
However, I reccommend either dynamic linking or static linking against
uclibc. You find the compiler flag in the toplevel Makefile

If you want more details about statical linking to glibc have a look at
http://sources.redhat.com/bugzilla/show_bug.cgi?id=3400

-nc




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