71d6901454
Many tools use __FILE__ or __BASE_FILE__ for debugging and both capture the build path. This results in non-reproducible images when building in different directories. If the config uses GCC 8 or above, we use -ffile-prefix-map=old=new and let gcc take care of the path remapping in __FILE__. Since GCC versions before v8 did not have this feature, we use an empty string in that case, and disable the builtin-macro-redefined warning which would otherwise trigger and cause build issues with -Werror. Signed-off-by: Atharva Lele <itsatharva@gmail.com> [Thomas: - as suggested by Arnout, use the empty string for the __FILE__ and __BASE_FILE__ value - as suggested by Romain, also handle __BASE_FILE__ in addition to __FILE__ - pass -Wno-builtin-macro-redefined to avoid build errors when -Werror is passed] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> |
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| arch | ||
| board | ||
| boot | ||
| configs | ||
| docs | ||
| fs | ||
| linux | ||
| package | ||
| support | ||
| system | ||
| toolchain | ||
| utils | ||
| .defconfig | ||
| .flake8 | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .gitlab-ci.yml.in | ||
| CHANGES | ||
| Config.in | ||
| Config.in.legacy | ||
| COPYING | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.legacy | ||
| README | ||
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