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In GCC6 the compiler was made smarter to omit the flag -fdebug-prefix-map from the DWARF DW_AT_producer section[1]. That flag contains the absolute path '$(BASE_DIR)' which breaks reproducibility. Prior to GCC6 however, the only way to omit the flag is to use -gno-record-gcc-switches which omits all flags. [1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=266cc0c181549c2fb6b50f8f26213cdc89101026 Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com> [Arnout: invert condition to ifeq (,) instead of ifneq (,y)] Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
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