Hi Albert,
On 04/02/15 21:29, Albert ARIBAUD wrote:
Hello Graeme,
On Wed, 04 Feb 2015 18:14:22 +1100, Graeme Russ gruss@tss-engineering.com wrote:
So the first question that we need to answer is: Do the avr32, m68k, nds32, and sparc toolchains support the generation of the relevant sections needed to perform relocation in a manner similar to x86 (i.e generation of relocation references into sections of the final U-Boot binary)?
Those arches which use GCC should be able to use -pie / -pic-executable and possibly --emit-relocs, as none of these is arch-specific.
That was my understanding too - it's a function of ELF, not the architecture.
Then, each arch might have to look into what GCC options are needed. For the record, on ARM, I did not need any gcc option, but actually had one -fPIC option /removed/.
Yes, I vaguely remember this. The difference is that -fPIC is used for relocatable LIBRARIES whereas -fPIE is used for relocatable EXECUTABLES. Since U-Boot is a monolithic executable, -fPIC makes no sense
Regards,
Graeme