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SSP support requires support in ATF platform code. Not all platforms implement plat_get_stack_protector_canary() hook. The result is build failure: (.text.asm.update_stack_protector_canary+0x4): undefined reference to `plat_get_stack_protector_canary' Commitcf176128ec("boot/arm-trusted-firmware: add SSP option") originally introduces this issue. But then commitccac9a5bbb("boot/arm-trusted-firmware: don't force ENABLE_STACK_PROTECTOR") hid the problem by effectively disabling SSP for all platforms. So only after commit09acc7cbc9("boot/arm-trusted-firmware: fix SSP support") the issue showed up. Make SSP an opt-in for platform that actually provide the plat_get_stack_protector_canary() hook. Cc: Sergey Matyukevich <geomatsi@gmail.com> Cc: Dick Olsson <hi@senzilla.io> Tested-by: Heiko Thiery <heiko.thiery@gmail.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> (cherry picked from commitf03ae60451) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches