编译不成功(error: call of overloaded ‘vector(nlohmann::basic_json<>&)’ is ambiguous)

[liansh2002]

想在Raspberry pi上使用，所以先试下在PC上自行编译安装，但编译不成功。
编译环境：
x86_64，Debian 10，gcc (Debian 8.3.0-6)，nlohmann-json3-dev/now 3.9.0-1 all，cmake version 3.18.2

错误信息
[ 40%] Building CXX object src/CMakeFiles/main.dir/config.cpp.o /usr/local/etc/app/cgproxy/src/config.cpp: In member function ‘bool CGPROXY::CONFIG::Config::validateJsonStr(std::__cxx11::string)’: /usr/local/etc/app/cgproxy/src/config.cpp:127:60: error: call of overloaded ‘vector(nlohmann::basic_json<>&)’ is ambiguous if (value.is_array() && !validCgroup((vector<string>)value)) status = false; ^~~~~ In file included from /usr/include/c++/8/vector:64, from /usr/local/etc/app/cgproxy/build/src/common.h:7, from /usr/local/etc/app/cgproxy/src/config.h:3, from /usr/local/etc/app/cgproxy/src/config.cpp:1: /usr/include/c++/8/bits/stl_vector.h:515:7: note: candidate: ‘std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::__cxx11::basic_string<char> >]’ vector(initializer_list<value_type> __l, ^~~~~~ /usr/include/c++/8/bits/stl_vector.h:476:7: note: candidate: ‘std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&) [with _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >]’ vector(vector&& __x) noexcept ^~~~~~ /usr/include/c++/8/bits/stl_vector.h:458:7: note: candidate: ‘std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >]’ vector(const vector& __x) ^~~~~~ /usr/include/c++/8/bits/stl_vector.h:415:7: note: candidate: ‘std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const allocator_type&) [with _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::__cxx11::basic_string<char> >]’ vector(size_type __n, const allocator_type& __a = allocator_type()) ^~~~~~ make[2]: *** [src/CMakeFiles/main.dir/build.make:108: src/CMakeFiles/main.dir/config.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:184: src/CMakeFiles/main.dir/all] Error 2 make: *** [Makefile:171: all] Error 2

[black-desk]

the same problem here

[thetrashyNoob27]

bad news first,author does not provide armhf version execsnoop-kernel, im trying to figure it out. currnetly cant compile on 32bit version raspbian.
64bit ubuntu, gcc10.2.0, raspberry 4b compiled, working fine.

problem No.1 error: call of overloaded ‘vector(nlohmann::basic_json<>&)’ is ambiguous):
change src/config.cpp line127:
if (value.is_array() && !validCgroup((vector<string>)value)) status = false;//noting wrong,gcc8 problem
to
if (value.is_array() && !validCgroup(value.get<std::vector<string>>())) status = false; //solution

then problem No.2:socket_server.cpp:(.text+0xf8): undefined reference to `std::filesystem::__cxx11::path::_M_split_cmpts()'
seems gcc8 have some issue with std::filesystem,so i did this:

namespace CGPROXY::SOCKET {
bool isFileExist(const char* path)//add this function to check if file exist
{
  struct stat buffer;
  return (stat(path,&buffer)==0);
}

void SocketServer::socketListening(function<int(char *)> callback, promise<void> status) {
  debug("starting socket listening");
  sfd = socket(AF_UNIX, SOCK_STREAM, 0);

  //if (fs::exists(SOCKET_PATH) && unlink(SOCKET_PATH) == -1)//orignal,have issue with gcc8
  if (isFileExist(SOCKET_PATH) && unlink(SOCKET_PATH) == -1)
  {
    error("%s exist, and can't unlink", SOCKET_PATH);
    return;
  }

problem No.3:execsnoop_share.cpp:55:29: error: ‘execsnoop_kern__open_and_load’ was not declared in this scope
havent figure it out yet

[Liu shenghan]

我的arm64机找不到libbpf，怎么办
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
LIBBPF
linked by target "execsnoop" in directory /home/mmc199/cgproxy-master/execsnoop-kernel

-- Configuring incomplete, errors occurred!
See also "/home/mmc199/cgproxy-master/build/CMakeFiles/CMakeOutput.log".

https://www.oracle.com/cn/cloud/free/

http://cdimage.ubuntu.com/ubuntukylin/focal/daily-live/current/focal-desktop-arm64.iso

=================================================================
编译好了一个优麒麟用的，使用时还要自己下载安装所需的libbpf
不然systemctl status cgproxy.service 会看见错误

info: socketserver thread started
info: loading /usr/lib/aarch64-linux-gnu/cgproxy/libexecsnoop.so
error: dlopen /usr/lib/aarch64-linux-gnu/cgproxy/libexecsnoop.so failed: libbpf.so.0:
cannot open shared object file: No such file or directory
error: execsnoop not ready to start, maybe missing libbpf

cgproxy_0.19_UbuntuKylin20.04arm64.deb.zip
libbpf要从Ubuntu的源自己下载
http://ports.ubuntu.com/ubuntu-ports/ubuntu-ports/pool/universe/libb/libbpf/
dpkg -i *.deb
安装libbpf0_0.1.0-1_arm64.deb 、 libbpf-dev_0.1.0-1_arm64.deb 两个文件。