> On Aug 11, 2015, at 8:26 PM, Denys Dmytriyenko <de...@denix.org> wrote: > > So, I've been debugging the issue of oprofile rebuilding from one MACHINE to > another (causing PR issues, etc). I was able to trace it down to this line: > > EXTRA_OECONF = "--with-kernel=${STAGING_KERNEL_DIR} --without-x > ac_cv_prog_XSLTPROC=" > > And STAGING_KERNEL_DIR resolves to this: > > STAGING_KERNEL_DIR = "${TMPDIR}/work-shared/${MACHINE}/kernel-source" > > Now, obviously, when MACHINE changes, sstate invalidates do_configure and > rebuilds oprofile. > > The question is, what is the proper fix in this case - mark oprofile as > machine-specific with PACKAGE_ARCH = "${MACHINE_ARCH}", since it will be > configuring and building against (potentially) completely different kernel > tree. So, just mark it explicitly and be safe... > > Or another option is to tell sstate to ignore changes to the above variables > with this simple line: > > EXTRA_OECONF[vardepsexclude] = "STAGING_KERNEL_DIR" > > This also does the trick, but I'm a bit worried there could be side-effects of > using oprofile against the wrong kernel... Any recommendations?
Using kernel staging dir is unnecessary here, oprofile’s configure is poking for user space APIs in linux/perf_event.h so linux-libc-headers dependency is enough. and use —with-kernel=${STAGING_EXECPREFIXDIR} instead of STAGING_KERNEL_DIR, that should fix it. -Khem
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