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When building u-boot tools in cross-build environment CFLAGS environment variable set up for target is taken into an account when building code for host. Make it empty on invocation of python. This fixes the following build errors when cross-compiling for xtensa: cc1: error: unrecognized command line option "-mlongcalls" cc1: error: unrecognized command line option "-mauto-litpools" Fixes: http://autobuild.buildroot.net/results/439d6dacfaa7f9244bd15ca04990c12a25ff4777 http://autobuild.buildroot.net/results/e2fe36c20e75d01a01a6659ef11e888965a843b9 http://autobuild.buildroot.net/results/6f37ff347822a76571a9fe9cf3c491fe7e4164fa Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.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