[Linuxppc-users] Little endian linker options

[Segher Boessenkool]

Hi Ben,

On Wed, Nov 07, 2018 at 07:31:05PM +0000, Ben Hood wrote:
> I’m trying to cross compile a bunch of stuff on CentOS7 x86_64 for ppc64le. The resultant binaries appear to be in big endian ppc64 format instead of little.
> 
> So to break things down, I’ve tried to create a little endian binary for a hello world app:
> 
> $ /opt/at12.0/bin/powerpc64-linux-gnu-gcc -mcpu=powerpc64le -Wl,-m,elf64lppc,-EL hello.c
> /opt/at12.0/bin/powerpc64-linux-gnu-ld: /opt/at12.0/lib/gcc/powerpc64-linux-gnu/8.2.1/../../../../powerpc64-linux-gnu/lib/../lib64/libgcc_s.so.1: error adding symbols: file in wrong format
> collect2: error: ld returned 1 exit status
> 
> However, I specify -EB instead of -EL, the compilation succeeds and readelf tells me the output is ppc64 big endian:
> 
> $ /opt/at12.0/bin/powerpc64-linux-gnu-gcc -mcpu=powerpc64le -Wl,-m,elf64lppc,-EB hello.c
> 
> Does anybody know how to get the toolchain to generate in little endian format?

You should use the powerpc64le-linux-gnu toolchain instead.

HTH,


Segher