我正在尝试运行程序,使用Ubuntu 12.10上的boost::filesystem示例代码,但它不想编译。
#include <iostream>
#include <boost/filesystem.hpp>
using namespace boost::filesystem;
using namespace std;
void fun(const string& dirPath);
int main()
{
fun("/home");
return 0;
}
void fun(const string& dirPath)
{
path p (dirPath);
if (exists(p))
{
if (is_regular_file(p))
cout << p << " size is " << file_size(p) << '\n';
else if (is_directory(p))
cout << p << "is a directory\n";
else
cout << p << "exists, but is neither a regular file nor a directory\n";
}
else
cout << p << "does not exist\n";
}
和CMake代码:
project(tttest)
cmake_minimum_required(VERSION 2.8)
aux_source_directory(. SRC_LIST)
add_executable(${PROJECT_NAME} ${SRC_LIST})
FIND_PACKAGE(Boost 1.53 COMPONENTS filesystem system REQUIRED)
include_directories(${Boost_INCLUDE_DIR})
link_directories(${Boost_LIBRARY_DIR})
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${Boost_LIBRARIES})
不幸的是,它会生成错误
CMakeFiles/tttest.dir/main.cpp.o: In function `boost::filesystem::exists(boost::filesystem::path const&)':
main.cpp:(.text._ZN5boost10filesystem6existsERKNS0_4pathE[_ZN5boost10filesystem6existsERKNS0_4pathE]+0x19): undefined reference to `boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)'
CMakeFiles/tttest.dir/main.cpp.o: In function `boost::filesystem::is_directory(boost::filesystem::path const&)':
main.cpp:(.text._ZN5boost10filesystem12is_directoryERKNS0_4pathE[_ZN5boost10filesystem12is_directoryERKNS0_4pathE]+0x19): undefined reference to `boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)'
CMakeFiles/tttest.dir/main.cpp.o: In function `boost::filesystem::is_regular_file(boost::filesystem::path const&)':
main.cpp:(.text._ZN5boost10filesystem15is_regular_fileERKNS0_4pathE[_ZN5boost10filesystem15is_regular_fileERKNS0_4pathE]+0x19): undefined reference to `boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)'
CMakeFiles/tttest.dir/main.cpp.o: In function `boost::filesystem::file_size(boost::filesystem::path const&)':
main.cpp:(.text._ZN5boost10filesystem9file_sizeERKNS0_4pathE[_ZN5boost10filesystem9file_sizeERKNS0_4pathE]+0x19): undefined reference to `boost::filesystem::detail::file_size(boost::filesystem::path const&, boost::system::error_code*)'
collect2: error: ld returned 1 exit status
这个问题的原因是什么,如何解决?
发布于 2013-08-19 17:29:22
链接时需要添加libboost_filesystem库。或者libboost_filesystem-mt,如果您的应用程序是多线程的。如下所示:
g++ -o file -lboost_filesystem-mt source_file.cpp
发布于 2018-03-16 07:23:50
对我有效的解决方案是使用"-c“编译,然后创建可执行文件,如下所示:
g++ -c -o main.o main.cpp
g++ -o my_prog main.o -lboost_system -lboost_filesystem
发布于 2017-01-15 01:19:20
您需要添加以下库:
g++ -o file -lboost_system -lboost_filesystem sourcefile.cpp
如果使用Makefile:
CC=gcc
CXX=g++
PROG = program
CXXFLAGS := -std=c++1y -g -Wall
LDFLAGS = -L/usr/local/lib -L/usr/lib/x86_64-linux-gnu
LIBS= -lboost_system -lboost_filesystem
SRCS= main.cpp
OBJS=$(subst .cpp,.o,$(SRCS))
all: $(OBJS)
$(CXX) $(CXXFLAGS) -o $(PROG) $(OBJS) $(LIBS) $(LDFLAGS)
https://stackoverflow.com/questions/15634114
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