Cross compile broken - 3.17.3 vs. 3.17.4?

From: Mattias Schlenker
Date: Tue Nov 25 2014 - 16:24:13 EST


Hello everyone,

when cross compiling with a rather generic x86_64-linux-gnu toolchain I run into the problem that "make bzImage" fails. It seems vmlinux binary gets run through the hosts objdump and not the $(CROSS_COMPILE)objdump as it was in 3.17.3.

I am not accustomed enough to kernel build habits to immediately spot the change that lead to this failed compile (178 files were changed between 3.17.3 and 3.17.4). But if you want, I am gonna provide you with a shell script that is able to set up the needed toolchain and succeed with 3.17.3 and fail with 3.17.4. Given my current workload this will take around 48 hours.

Regards,
Mattias

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