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z3 package was initially added with a depends on !BR2_nios2. This was detected by testing with "./utils/test-pkg -a -p z3". It turned out that few other architectures are also not supported. The actual z3 requirement is to have a libc that provides <fenv.h> AND also provides all the four macros: FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD. Quoting glibc manual, or "man fenv": https://www.gnu.org/software/libc/manual/html_node/Rounding.html "fenv.h defines constants which you can use to refer to the various rounding modes. Each one will be defined if and only if the FPU supports the corresponding rounding mode." This patch introduces _ARCH_SUPPORTS to limit only to the architectures with a FPU that has those rounding modes. Fixes: - http://autobuild.buildroot.net/results/2809dd1ae2f3ada8ee7b3f3e388341c7cfb633fb Signed-off-by: Julien Olivain <ju.o@free.fr> 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