hfingler

scripts/config --enable CONFIG_BPF
scripts/config --enable CONFIG_BPF_SYSCALL
scripts/config --enable CONFIG_HAVE_EBPF_JIT
scripts/config --enable CONFIG_BPF_JIT
scripts/config --enable CONFIG_BPF_JIT_ALWAYS_ON
scripts/config --enable CONFIG_DEBUG_INFO_BTF
scripts/config --enable CONFIG_DEBUG_INFO_BTF_MODULES

scripts/config --enable CONFIG_CGROUPS
scripts/config --enable CONFIG_CGROUP_BPF

hfingler

// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>

extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
				  __u32 c, __u64 d) __ksym;

extern __u64 bpf_kfunc_call_test4(__u32 a, __u64 b,
				  __u32 c, __u64 d) __ksym;

hfingler

libbpf: loading object 'hello_bpf' from buffer
libbpf: elf: section(3) tc, size 152, link 0, flags 6, type=1
libbpf: sec 'tc': found program 'kfunc_call_test1' at insn offset 0 (0 bytes), code size 19 insns (152 bytes)
libbpf: elf: section(4) .reltc, size 16, link 11, flags 40, type=9
libbpf: elf: section(5) license, size 4, link 0, flags 3, type=1
libbpf: license of hello_bpf is GPL
libbpf: elf: section(6) .BTF, size 89879, link 0, flags 0, type=1
libbpf: elf: section(8) .BTF.ext, size 236, link 0, flags 0, type=1
libbpf: elf: section(11) .symtab, size 144, link 1, flags 0, type=2
libbpf: looking for externs among 6 symbols...

hfingler

libbpf: loading object 'hello_bpf' from buffer
libbpf: elf: section(3) tp/raw_syscalls/sys_enter, size 192, link 0, flags 6, type=1
libbpf: sec 'tp/raw_syscalls/sys_enter': found program 'handle_tp' at insn offset 0 (0 bytes), code size 24 insns (192 bytes)
libbpf: elf: section(4) .reltp/raw_syscalls/sys_enter, size 64, link 13, flags 40, type=9
libbpf: elf: section(5) .bss, size 4, link 0, flags 3, type=8
libbpf: elf: section(6) .rodata, size 56, link 0, flags 2, type=1
libbpf: elf: section(7) license, size 4, link 0, flags 3, type=1
libbpf: license of hello_bpf is GPL
libbpf: elf: section(8) .BTF, size 89296, link 0, flags 0, type=1
libbpf: elf: section(10) .BTF.ext, size 192, link 0, flags 0, type=1

hfingler

libbpf: loading object 'hello_bpf' from buffer
libbpf: elf: section(3) classifier, size 112, link 0, flags 6, type=1
libbpf: sec 'classifier': found program 'kfunc_call_test1' at insn offset 0 (0 bytes), code size 14 insns (112 bytes)
libbpf: elf: section(4) .relclassifier, size 32, link 13, flags 40, type=9
libbpf: elf: section(5) .bss, size 4, link 0, flags 3, type=8
libbpf: elf: section(6) .rodata, size 28, link 0, flags 2, type=1
libbpf: elf: section(7) license, size 4, link 0, flags 3, type=1
libbpf: license of hello_bpf is GPL
libbpf: elf: section(8) .BTF, size 89875, link 0, flags 0, type=1
libbpf: elf: section(10) .BTF.ext, size 112, link 0, flags 0, type=1

hfingler

NOTE: This is only a simulation!
      apt needs root privileges for real execution.
      Keep also in mind that locking is deactivated,
      so don't depend on the relevance to the real current situation!
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically installed and are no longer required:
  adwaita-icon-theme bolt eatmydata finalrd fwupd-signed gir1.2-packagekitglib-1.0 gtk-update-icon-cache hicolor-icon-theme humanity-icon-theme initramfs-tools-bin klibc-utils libappstream4 libatasmart4 libatk-bridge2.0-0 libatk1.0-0
  libatk1.0-data libatspi2.0-0 libavahi-client3 libavahi-common-data libavahi-common3 libblockdev-crypto2 libblockdev-fs2 libblockdev-loop2 libblockdev-part-err2 libblockdev-part2 libblockdev-swap2 libblockdev-utils2 libblockdev2

hfingler

#save this to Dockerfile.x86_64
#to build, run something like: $docker build --rm -t alpine-awssdk:latest -f Dockerfile.x86_64 .

FROM alpine:edge

RUN apk add git emacs g++ make cmake zlib-dev openssl-dev curl-dev perl nghttp2-static boost-dev build-base

RUN cd / && git clone https://github.com/aws/aws-sdk-cpp.git &&  \
    mkdir -p sdkbuild && cd sdkbuild && cmake -DBUILD_ONLY="s3;transfer" -DCMAKE_INSTALL_PREFIX=/musl \
    -DBUILD_SHARED_LIBS=OFF -DENABLE_TESTING=OFF -DFORCE_SHARED_CRT=OFF \