Messages in this thread | | | Date | Mon, 28 Sep 2015 10:48:36 +0100 | From | Russell King - ARM Linux <> | Subject | Re: Build regressions/improvements in v4.3-rc3 |
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On Mon, Sep 28, 2015 at 10:30:06AM +0100, Russell King - ARM Linux wrote: > On Mon, Sep 28, 2015 at 08:57:44AM +0200, Geert Uytterhoeven wrote: > > On Sun, Sep 27, 2015 at 9:34 PM, Geert Uytterhoeven > > <geert@linux-m68k.org> wrote: > > > JFYI, when comparing v4.3-rc3[1] to v4.3-rc2[3], the summaries are: > > > - build errors: +8/-12 > > > > + error: No rule to make target include/config/auto.conf: => N/A > > > > arm-randconfig > > Not every randconfig failure is a kernel problem. Here's an example: > > Physical address of main memory (PHYS_OFFSET) [] (NEW) aborted! > > Console input/output is redirected. Run 'make oldconfig' to update configuration. > > This needs someone to provide a value, which means these failures are > not in fact failures of the kernel, but a failure of the build system > to anticipate that there may be Kconfig questions that need input. > > So, these ones should be ignored.
Also, a great many of the failures are due to the build toolchain not supporting -fstack-protector-strong. I think it's absolutely right for the build to error out if you enable a kernel feature which requires toolchain support, but the toolchain does not support that feature.
What this means is that the build results from kissb are less than useful - without spending ages looking at every single build, it's hard to find the real failures we care about.
I'd suggest that either the randconfig is seeded to ensure that CONFIG_CC_STACKPROTECTOR_STRONG is always disabled in ARM randconfigs, or that the ARM toolchain is updated to support this feature.
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