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The C-SKY architecture uses two different ABIs, depending on the core being used: - "abiv1" is a mcore based ISA with ELF_NUM:39 and does not support FPU & VDSP. It is used only for the ck610 core. - "abiv2" is C-SKY's own ISA with ELF_NUM:252 and supports FPU & VDSP. It is used for the ck807, ck810, ck860 cores. Since "abiv1" does not support FPU, BR2_GCC_TARGET_FLOAT_ABI will always have the value "soft" for the ck610 core. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [Thomas: rework commit log] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches