[net_watcher] 编译错误

[houlifei328]

readme文档只有示例unbunt系统的编译方法，我是centos8系统，内核版本：4.18.0-553.6.1.el8.x86_64
相关组件版本
clang -v
clang version 17.0.6 (Red Hat 17.0.6-1.module_el8+767+9fa966b8)
gcc -v
gcc 版本 8.5.0 20210514 (Red Hat 8.5.0-22) (GCC)
gcc -m32 -v
gcc 版本 8.5.0 20210514 (Red Hat 8.5.0-22) (GCC)
gcc -m64 -v
gcc 版本 8.5.0 20210514 (Red Hat 8.5.0-22) (GCC)

编译目录：
lmp/eBPF_Supermarket/Network_Subsystem/net_watcher

修改点：
我修改了Makefile。只修改了依赖包，不让他窒息apt install -y gcc-multilib g++-multilib
check_multilib:
#@if [ ! -f /usr/include/x86_64-linux-gnu/gnu/stubs-32.h ]; then
@if [ ! -f /usr/include/gnu/stubs-32.h ]; then
echo "multilib 未安装，正在安装...";
sudo apt-get update;
sudo apt-get install -y gcc-multilib g++-multilib;
else
echo "multilib 已经安装";
fi
我手动安装了yum install glibc-devel.i686 libstdc++-devel.i686

报错：
然后make执行报错如下：
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:27:5: error: invalid application of 'typeof' to bit-field
27 | CONN_INIT // 初始化conn_t结构中基本信息
| ^
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^
.output/bpf/bpf_core_read.h:520:2: note: expanded from macro 'BPF_CORE_READ'
520 | ___type((src), a, ##VA_ARGS) __r;
| ^
.output/bpf/bpf_core_read.h:391:28: note: expanded from macro '___type'
391 | #define ___type(...) typeof(___arrow(VA_ARGS))
| ^
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:27:5: error: address of bit-field requested
27 | CONN_INIT // 初始化conn_t结构中基本信息
| ^~~~~~~~~
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:521:2: note: expanded from macro 'BPF_CORE_READ'
521 | BPF_CORE_READ_INTO(&__r, (src), a, ##VA_ARGS);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:428:2: note: expanded from macro 'BPF_CORE_READ_INTO'
428 | ___core_read(bpf_core_read, bpf_core_read,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
429 | dst, (src), a, ##VA_ARGS)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
.output/bpf/bpf_core_read.h:413:2: note: expanded from macro '___core_read0'
413 | ___read(fn, dst, ___type(src), src, a);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:394:41: note: expanded from macro '___read'
394 | read_fn((void )(dst), sizeof((dst)), &((src_type)(src))->accessor)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:312:79: note: expanded from macro 'bpf_core_read'
312 | bpf_probe_read_kernel(dst, sz, (const void *)__builtin_preserve_access_index(src))
| ^~~
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:71:5: error: invalid application of 'typeof' to bit-field
71 | CONN_INIT // 初始化conn_t结构中基本信息
| ^
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^
.output/bpf/bpf_core_read.h:520:2: note: expanded from macro 'BPF_CORE_READ'
520 | ___type((src), a, ##VA_ARGS) __r;
| ^
.output/bpf/bpf_core_read.h:391:28: note: expanded from macro '___type'
391 | #define ___type(...) typeof(___arrow(VA_ARGS))
| ^
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:71:5: error: address of bit-field requested
71 | CONN_INIT // 初始化conn_t结构中基本信息
| ^~~~~~~~~
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:521:2: note: expanded from macro 'BPF_CORE_READ'
521 | BPF_CORE_READ_INTO(&__r, (src), a, ##VA_ARGS);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:428:2: note: expanded from macro 'BPF_CORE_READ_INTO'
428 | ___core_read(bpf_core_read, bpf_core_read,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
429 | dst, (src), a, ##VA_ARGS)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
.output/bpf/bpf_core_read.h:413:2: note: expanded from macro '___core_read0'
413 | ___read(fn, dst, ___type(src), src, a);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:394:41: note: expanded from macro '___read'
394 | read_fn((void )(dst), sizeof((dst)), &((src_type)(src))->accessor)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:312:79: note: expanded from macro 'bpf_core_read'
312 | bpf_probe_read_kernel(dst, sz, (const void *)__builtin_preserve_access_index(src))
| ^~~
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:111:5: error: invalid application of 'typeof' to bit-field
111 | CONN_INIT // 初始化conn_t结构中基本信息
| ^
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^
.output/bpf/bpf_core_read.h:520:2: note: expanded from macro 'BPF_CORE_READ'
520 | ___type((src), a, ##VA_ARGS) __r;
| ^
.output/bpf/bpf_core_read.h:391:28: note: expanded from macro '___type'
391 | #define ___type(...) typeof(___arrow(VA_ARGS))
| ^
In file included from netwatcher.bpf.c:25:
./tcp.bpf.h:111:5: error: address of bit-field requested
111 | CONN_INIT // 初始化conn_t结构中基本信息
| ^~~~~~~~~
./common.bpf.h:424:20: note: expanded from macro 'CONN_INIT'
424 | u16 protocol = BPF_CORE_READ(sk, sk_protocol);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:521:2: note: expanded from macro 'BPF_CORE_READ'
521 | BPF_CORE_READ_INTO(&__r, (src), a, ##VA_ARGS);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:428:2: note: expanded from macro 'BPF_CORE_READ_INTO'
428 | ___core_read(bpf_core_read, bpf_core_read,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
429 | dst, (src), a, ##VA_ARGS)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
.output/bpf/bpf_core_read.h:413:2: note: expanded from macro '___core_read0'
413 | ___read(fn, dst, ___type(src), src, a);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:394:41: note: expanded from macro '___read'
394 | read_fn((void )(dst), sizeof((dst)), &((src_type)(src))->accessor)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.output/bpf/bpf_core_read.h:312:79: note: expanded from macro 'bpf_core_read'
312 | bpf_probe_read_kernel(dst, sz, (const void *)__builtin_preserve_access_index(src))
| ^~~
6 errors generated.
make: *** [Makefile:147：.output/netwatcher.bpf.o] 错误 1

资源：https://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20151109/142911.html 改链接应该是相关的修改，我理解应该是clang版本可能不对