On Mon, 2 Jul 2012, Chris Larson wrote: > On Mon, Jul 2, 2012 at 6:40 AM, Robert P. J. Day <rpj...@crashcourse.ca> > wrote: > > i'm not even remotely a python expert (working on that, though) so > > there may be a trivial and documented answer to this -- can i use > > bitbake to run an arbitrary python routine to see what the output > > would be? > > > > for example, here's qemu.bbclass: > > > > def qemu_target_binary(data): > > import bb > > > > target_arch = data.getVar("TARGET_ARCH", True) > > if target_arch in ("i486", "i586", "i686"): > > target_arch = "i386" > > elif target_arch == "powerpc": > > target_arch = "ppc" > > > > return "qemu-" + target_arch > > > > what if i wanted to see what that would return given a current build? > > can i do that? does that question even make sense?
... snip ... > Alternatively, just do: > > FOO = "${@qemu_target_binary(d)}" > > And then: bitbake -e | grep \^FOO= i tried this with a "qemux86" MACHINE selection and got: # expansion of FOO threw ExpansionError: Failure expanding variable FOO, expression was ${@qemu_target_binary(d)} which triggered exception NameError: name 'qemu_target_binary' is not defined that seemed a bit weird since i was just assuming a qemu-based build would automatically inherit that class file. so i added: INHERIT += "qemu" to my local.conf and that fixed it. i was a bit surprised that that class file wasn't part of a qemu build. the only class file that inherits it: meta/classes/libc-package.bbclass:inherit qemu i'm just surprised i picked what looked like a good test case, and it turned out to not work the way i thought. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ======================================================================== _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core