Add libbpf-bootstrap-android to directly support amd64 cross-compile to Android aarch64 #517
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JiaHuann
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helight,
LinkinPF and
chenamy2017
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chenamy2017
approved these changes
Sep 11, 2023
helight
reviewed
Sep 14, 2023
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helight ***@***.***> 于2023年9月14日周四 09:43写道：
… ***@***.**** commented on this pull request.
------------------------------
In .gitmodules
<#517 (comment)>
:
> @@ -13,3 +13,6 @@
[submodule "eBPF_Supermarket/eBPF_proc_image/libbpf-bootstrap"]
path = eBPF_Supermarket/eBPF_proc_image/libbpf-bootstrap
url = https://github.com/libbpf/libbpf-bootstrap.git
+[submodule "eBPF_Hub/libbpf-bootstrap-android"]
+ path = eBPF_Hub/libbpf-bootstrap-android
+ url = https://github.com/JiaHuann/libbpf-bootstrap-android
https://github.com/JiaHuann/libbpf-bootstrap-android
这个项目可以放到这里：
https://github.com/linuxkerneltravel/libbpf-bootstrap-android/
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chenamy2017
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LinkinPF
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Goal
Recognizing the challenges outlined in #144 on the
libbpf-bootstraprepository, where significant effort is required to cross-compile AMD64 eBPF programs to AArch64, especially in the context of user programs for the Android platform (which lacks GCC support after Android 8), I've taken the initiative to developlibbpf-bootstrap-androidto simplify this cross-compilation process.Additional Features
In cases where vendors don't expose the
"CONFIG_BTF_DEBUG_INFO"configuration option to user phones, I've implemented certain modifications to support the use of external BTF (BPF Type Format) files. This enhancement substantially enhances efficiency. Now, it's possible to build a generic Android kernel with this configuration. Subsequently, the resulting vmlinux and BTF files can be deployed to the device. Although a direct push of these files to the phone isn't the recommended approach, an alternative option is provided through BTFhubForAndroid.I would greatly appreciate your feedback on these changes and enhancements.