我正在努力运行一些boost::logging
演示应用程序。我有以下几点:
logger.cpp
:
#include <iostream>
#include <boost/fusion/iterator/equal_to.hpp>
#include <boost/log/core.hpp>
#include <boost/log/trivial.hpp>
#include <boost/log/expressions.hpp>
#include <boost/log/utility/setup/file.hpp>
namespace logging = boost::log;
namespace src = boost::log::sources;
namespace sinks = boost::log::sinks;
namespace keywords = boost::log::keywords;
namespace expr = boost::log::expressions;
void init()
{
logging::add_file_log("sample.log");
logging::core::get()->set_filter
(
logging::trivial::severity >= logging::trivial::info
);
}
int main(void) {
init();
std::cout <<"Hello World!";
CMakeLists.txt
:
cmake_minimum_required(VERSION 2.6)
project(LOGGER)
set(BOOST_INCLUDEDIR "/path/to/env/include")
set(BOOST_ROOT "/path/to/env/include")
find_package(Boost REQUIRED)
message(STATUS Boost_LIBRARIES:)
message (STATUS ${Boost_LIBRARIES})
message(STATUS BOOST_INCLUDEDIR:)
message(STATUS ${BOOST_INCLUDEDIR})
ADD_EXECUTABLE(logger logger.cpp)
target_include_directories(logger PUBLIC ${BOOST_INCLUDEDIR})
target_link_libraries(logger Boost::boost ${Boost_LIBRARIES})
set (CMAKE_CXX_FLAGS "-g -Wall")
在make
上我得到了:
$ make
Scanning dependencies of target logger
[ 50%] Building CXX object CMakeFiles/logger.dir/logger.cpp.o
[100%] Linking CXX executable logger
/usr/bin/ld: cannot find -lBoost::boost
collect2: error: ld returned 1 exit status
CMakeFiles/logger.dir/build.make:94: recipe for target 'logger' failed
make[2]: *** [logger] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/logger.dir/all' failed
make[1]: *** [CMakeFiles/logger.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
我不明白为什么! 我想念什么或做错什么了?
答案 0 :(得分:2)
第一个问题是因为您没有包括正确的头文件。对于add_file_log
,需要event['queryStringParameters']['order'] != null
头文件。
对于第二个问题(实际上应该是第二个问题,没有人喜欢移动的目标),如果您阅读the FindBoost
reference,将会看到
<boost/log/utility/setup/file.hpp>
这不是您需要链接的库。从Boost::boost Target for header-only dependencies
(Boost include directory)
命令中将其删除。