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BR2_sh selects BR2_ARCH_HAS_MMU_OPTIONAL, which means that it's up to the user to decide whether he wants to use MMU or not on SuperH platforms. However: - On SH2A, there is no MMU at all, so being to select "Use MMU" doesn't make any sense. - On SH4, there is no support for *not* using the MMU, so disabling "Use MMU" will cause the build to fail. In order to fix this, we move the MMU selection to arch/Config.in.sh: - BR2_sh2a selects nothing, so that it's always noMMU - BR2_sh4* select BR2_ARCH_HAS_MMU_MANDATORY so that the MMU is always used. Fixes: http://autobuild.buildroot.net/results/f4d52cabee61ee0f234b03c1ec1bd02e85e7bb20/ (FLAT selected with sh4aeb) http://autobuild.buildroot.net/results/d1b1dfe449f82944bd48215da3cdffd05797e2e9/ (FLAT selected with sh4a) http://autobuild.buildroot.net/results/45bc90fd2dde7bb201d7f999db1a8024cf889a06/ (FLAT selected with sh4) Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
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