Messages in this thread | | | Date | Mon, 28 Sep 2015 14:58:41 +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 03:50:16PM +0200, Geert Uytterhoeven wrote: > Hi Russell, > > On Mon, Sep 28, 2015 at 11:48 AM, Russell King - ARM Linux > <linux@arm.linux.org.uk> wrote: > > 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. > > Or that it's impossible to enable this feature if your toolchain doesn't > support it?
I think that would require kconfig to call out to the compiler to run a test build. This kind of thing has been talked about in the past but the feature never seems to appear - probably because it would end up increasing the kconfig startup time in every case.
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