我有三个C ++文件,而且我得到了一个非常烦人的C ++链接器错误。这是错误:
Undefined symbols for architecture x86_64:
"tiled::debug::log(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
_main in main.o
error_callback(int, char const*) in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
以下是我的文件:
的main.cpp
#include "debug.hpp"
#include <GLFW/glfw3.h>
using namespace tiled;
void error_callback(int error, const char* description);
int main(int argc, char* argv[])
{
debug::log("Initializing");
glfwSetErrorCallback(error_callback);
debug::log("Initializing GLFW...");
if (!glfwInit())
{
debug::log("Failed to initialize GLFW!");
glfwTerminate();
return -1;
}
debug::log("Done");
debug::log("Exiting program!");
glfwTerminate();
return 0;
}
void error_callback(int error, const char* description)
{
std::string error_code;
error_code.append("GLFW error ");
error_code.append(std::to_string(error));
debug::log(error_code);
debug::log(description);
}
debug.hpp
#ifndef TILED_DEBUG_HPP
#define TILED_DEBUG_HPP
#include <ctime>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
namespace tiled
{
class debug {
private:
static std::vector<std::string> data;
static std::ofstream log_file;
public:
static void log(const std::string& msg);
static int write_logs();
};
}
#endif /* TILED_DEBUG_HPP */
和debug.cpp
#include "debug.hpp"
namespace tiled
{
void debug::log (const std::string& msg)
{
// Log to the console
std::cout << msg << std::endl;
// Add to the data we will put in the log file.
data.push_back(msg);
}
int debug::write_logs()
{
std::string data_str;
/*
We get the system time here. This is because we want to name each log
after what time the log file was made.
*/
std::time_t result = std::time(nullptr);
std::string time = std::asctime(std::localtime(&result));
data_str.append("\n");
data_str.append(time);
// Put the contents of the data vector into the string we append to file
for (std::string str : data)
{
data_str.append("\n");
data_str.append(str);
}
log_file.open(time.c_str(), std::ios::app);
if (log_file.is_open())
{
log_file << data_str;
log_file.close();
}
else
{
std::cout << "Error: Couldn't write log file!" << std::endl;
return 1;
}
return 0;
}
}
似乎函数日志没有定义,但是我在debug.cpp文件中定义了它。我已经在这工作了几个小时......任何人都可以帮助我吗?
此外,如果它有帮助,Xcode正在使用构建程序的命令:
Ld / Users / home / Library / Developer / Xcode / DerivedData / tiled-bhqwfqpsuugzhkagbmrhebnbgnpb / Build / Products / Debug / tiles normal x86_64 cd / Users / home / Documents / tiles export MACOSX_DEPLOYMENT_TARGET = 10.10 /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -isysroot /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/ SDKs / MacOSX10.11.sdk -L / Users / home / Library / Developer / Xcode / DerivedData / tiled-bhqwfqpsuugzhkagbmrhebnbgnpb / Build / Products / Debug -L / usr / local / lib -F / Users / home / Library / Developer / Xcode / DerivedData / tiles-bhqwfqpsuugzhkagbmrhebnbgnpb / Build / Products / Debug -filelist /Users/home/Library/Developer/Xcode/DerivedData/tiled-bhqwfqpsuugzhkagbmrhebnbgnpb/Build/Intermediates/tiled.build/Debug/tiled.build/Objects-normal/ x86_64 / tiled.LinkFileList -mmacosx-version-min = 10.10 -stdlib = libc ++ -lglfw.3.1 -framework OpenGL -Xlinker -dependency_info -Xlinker / Users / home / Library / Developer / Xcode / DerivedData / tiled-bhqwfqpsuugzhkagbmrhebnbgnpb / Build / Intermediates /tiled.build/Debug/tiled.build/Objects-normal/x86_64/tiled_dependency_info.dat -o / Users / home / Library / Developer / Xcode / DerivedData / tiled-bhqwfqpsuugzhka gbmrhebnbgnpb /生成/产品/调试/瓦
答案 0 :(得分:0)
为了解决这个问题,我摆脱了.cpp文件,并制作了这些内联函数。因为这只是一种解决方法,所以我不打算选择这个作为答案。