[Buildroot] Buildroot toolchain for arm

[Buildroot] Buildroot toolchain for arm

[Chia-Hung Chou]

I want to build the toolchain to compile into fully thumb instruction. In
the menuconfig, I add the "--with-mode=thumb" into gcc options.
After I make the buildroot, there are some Errors :
    make[5]: *** [libmudflap.la] Error 1
    make[5]: Leaving directory
'/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
    make[4]: *** [all-recursive] Error 1
    make[4]: Leaving directory
'/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
    make[3]: *** [all] Error 2
    make[3]: Leaving directory
'/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
    make[2]: *** [all-target-libmudflap] Error 2
    make[2]: Leaving directory
'/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final'
    make[1]: *** [all-target-libmudflap] Error 2
    make[1]: Leaving directory
'/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final'
    make: ***
[/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.4.5-final/.compiled]
Error 2
 I try a lot of ways but I still can't solve it. Is there any way to solve
or to build a toolchain that could compile code into fully thumb
instruction??

thanks~
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[Buildroot] Buildroot toolchain for arm

[Gustavo Zacarias]

On 03/23/11 08:50, Chia-Hung Chou wrote:

> I want to build the toolchain to compile into fully thumb
> instruction. In the menuconfig, I add the "--with-mode=thumb" into gcc
> options.
> After I make the buildroot, there are some Errors : 
>     make[5]: *** [libmudflap.la <http://libmudflap.la>] Error 1
>     make[5]: Leaving directory
> '/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
>     make[4]: *** [all-recursive] Error 1
>     make[4]: Leaving directory
> '/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
>     make[3]: *** [all] Error 2
>     make[3]: Leaving directory
> '/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final/arm-unknown-linux-uclibic/libmudflap'
>     make[2]: *** [all-target-libmudflap] Error 2
>     make[2]: Leaving directory
> '/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final'
>     make[1]: *** [all-target-libmudflap] Error 2
>     make[1]: Leaving directory
> '/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.5-final'
>     make: ***
> [/home/chiahung/buildroot-2011.02/output/toolchain/gcc-4.4.4.5-final/.compiled]
> Error 2
>  I try a lot of ways but I still can't solve it. Is there any way to
> solve or to build a toolchain that could compile code into fully thumb
> instruction??
> 
> thanks~

Yes, you might want to use "-mthumb" in BR2_TARGET_OPTIMIZATION.
See the gcc manpage.
Regards.