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Merge pull request #55 from brain-hackers/readme

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Update README
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Takumi Sueda 2023-07-29 01:36:35 +09:00 committed by GitHub
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@ -94,8 +94,8 @@ Build Linux
1. Confirm that `linux-brain/arch/arm/boot/zImage` exists. 1. Confirm that `linux-brain/arch/arm/boot/zImage` exists.
Bootstrap Debian 11 (bullseye) Build a Debian rootfs
------------------------------ ---------------------
1. Run `make ldefconfig lbuild`. 1. Run `make ldefconfig lbuild`.
@ -107,9 +107,23 @@ Bootstrap Debian 11 (bullseye)
1. Confirm that `image/sd.img` is built and burn it to an SD card. 1. Confirm that `image/sd.img` is built and burn it to an SD card.
Build a Buildroot rootfs
------------------------
Buildroot rootfs aims to be the most lightweight rootfs for experimental use. `make buildroot_rootfs` runs the defconfig target for rootfs-only build and then builds the rootfs tarball and a CPIO archive for initramfs. `make image/sd_buildroot.img` makes a bootable SD image in `image` directory like the typical Brainux SD image.
If you want to customize the build of Buildroot, `cd` into `buildroot` and use the following targets:
- `make menuconfig` to change the configuration
- `make` to build the rootfs (`-j` option might give you extra speed)
`image/sd_buildroot.img` target expects presence of the tarball at `buildroot/output/images/rootfs.tar`. You'll have to `clean` and rebuild every time you change the Buildroot's config before making the SD image.
Known issues Known issues
---------------------------------------- ----------------------------------------
If you using gcc 10 for host compiler, `make ubuild` may fail. If you use GCC 10 for the host compiler, `make ubuild` may fail.
To complete build, open `/u-boot-brain/scripts/dtc/dtc-lexer.lex.c` or `/u-boot-brain/scripts/dtc/dtc-parser.tab.c` then comment out `YYLTYPE yylloc;` To complete build, open `/u-boot-brain/scripts/dtc/dtc-lexer.lex.c` or `/u-boot-brain/scripts/dtc/dtc-parser.tab.c` then comment out `YYLTYPE yylloc;`
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