On Fri, May 12, 2023 at 4:46 AM Ayoub Zaki <[email protected]> wrote: > > After testing on the target, static busybox cannot be started, it looks like > Cortex M7 (MMU less) cannot run ELF Binaries and need BFLT format: > > https://unix.stackexchange.com/questions/610094/kernel-cannot-execute-binaries-error-8 > > I saw that uClibc was removed and replaced with Musl, can Musl also generate > BFLT format binaries ? >
you could use musl which has FDPIC support that is needed for running static bins on MCUs however it might need some tweaks to get it going in OE > > > On Fri, May 12, 2023 at 11:35 AM Ross Burton <[email protected]> wrote: >> >> On 12 May 2023, at 10:24, Ayoub Zaki <[email protected]> wrote: >> > >> > Ross' suggestion to remove opkg-utils hard coded build dependency on >> > python solved the issue >> >> I have some local patches to clean this up, so you never need to build >> opkg-utils. >> >> > but I noticed that there is a similar issue if PACKAGE_CLASSES = >> > "package_deb" is selected. >> > wouldn't it be possible to disable in yocto completely package management >> > e.g PACKAGE_CLASSES = "” ? >> >> Images are constructed from packages, so this would be tricky. >> >> Use package_ipk and you get the leanest package manager. If you don’t have >> package-management in IMAGE_FEATURES then you don’t get on-target tools, >> which saves building them at all. >> >> > Another issue I faced since my target is MMU less is that busybox enforce >> > shared lib build: >> > >> > http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox.inc?h=kirkstone#n115 >> > >> > what is the reason behind this? shouldn't yocto support mmu less target ? >> >> We don’t have any official MMU-less supported targets. If recipes need to >> be cleaned up to support them, then please do send patches. >> >> Ross
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