mirror of
https://gitlab.com/buildroot.org/buildroot.git
synced 2026-09-09 07:51:59 -09:00
c08fa13d36
This will use gcc-ar, gcc-nm and gcc-ranlib instead of the normal binutils tools. The difference is that with the wrappers, gcc plugins will be automatically picked up. gcc 4.7 introduced these wrappers, to detect the prefix and keep gcc specifics out of Makefile.in, a new variable BR2_TOOLCHAIN_BUTILS_PREFIX will be used to carry the prefix on supported versions. Note that binutils added some automatic loading with the 'bfd-plugins' directory (somewhere around 2.28), but the first implementation had issues, and generally depends on correctly setup symlinks (often broken, may point to some other gcc's library). The wrappers always work painless. The original motivation (now ~2 years in use) was to add "-flto -ffat-lto-objects" to both BR2_TARGET_OPTIMIZATION and BR2_TARGET_LDFLAGS, and have target binaries lto optimized. Not all packages will compile with this option, further work could white/blacklist packages (adding -fno-lto to the options). Signed-off-by: Norbert Lange <nolange79@gmail.com> [yann.morin.1998@free.fr: don't introduce a Config.in blind option] 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