python - Makefile 编译二进制文件，不是可执行文件

Question

当我在 make 之后运行可执行文件时，bash 引发以下错误:

$ ./prog 
-bash: ./prog: cannot execute binary file

我的生成文件:

CC = g++ -std=c++11
LDFLAGS = -undefined dynamic_lookup -bundle
OBJ = main.o datetime.o logger.o WeatherApi.o tinyxml2.o tflower.o tservo.o


prog: $(OBJ)
    $(CC) -o $@ $(OBJ) $(LDFLAGS)

%.o: %.cpp
    $(CC) -c $<

clean:
    rm -r *.o

我做错了什么？

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更新 2:

感谢您的 comment SergayA.在 this article 的帮助下链接 python 之后它有效。

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更新 1:

我在一些评论后删除了 -undefined dynamic_lookup -bundle 标志，所以我遇到了 Python 问题。要使用 Python.h，我将环境变量设置为此路径:CPLUS_INCLUDE_PATH=/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/

2 warnings generated.
g++ -std=c++11 -c datetime.cpp
g++ -std=c++11 -c logger.cpp
g++ -std=c++11 -c WeatherApi.cpp
g++ -std=c++11 -c tinyxml2.cpp
g++ -std=c++11 -c tflower.cpp
g++ -std=c++11 -c tservo.cpp
g++ -std=c++11 -o prog main.o datetime.o logger.o WeatherApi.o tinyxml2.o tflower.o tservo.o 
Undefined symbols for architecture x86_64:
  "_PyDict_GetItemString", referenced from:
      WeatherApi::SayHelloWorld() in WeatherApi.o
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyErr_Print", referenced from:
      WeatherApi::WeatherApi(char*, char*) in WeatherApi.o
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyImport_Import", referenced from:
      WeatherApi::WeatherApi(char*, char*) in WeatherApi.o
  "_PyModule_GetDict", referenced from:
      WeatherApi::WeatherApi(char*, char*) in WeatherApi.o
  "_PyObject_CallObject", referenced from:
      WeatherApi::SayHelloWorld() in WeatherApi.o
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyString_AsString", referenced from:
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyString_FromString", referenced from:
      WeatherApi::WeatherApi(char*, char*) in WeatherApi.o
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyTuple_New", referenced from:
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_PyTuple_SetItem", referenced from:
      WeatherApi::GetAirTemperature() in WeatherApi.o
  "_Py_Finalize", referenced from:
      WeatherApi::~WeatherApi() in WeatherApi.o
  "_Py_Initialize", referenced from:
      WeatherApi::WeatherApi(char*, char*) in WeatherApi.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [prog] Error 1

Answer 1

What did i wrong?

由于您显然想要一个可以直接执行的程序，所以您做错的是指定 the -bundle option至 g++。这指示它输出应该是 Mach-o bundle 格式 文件。这些文件不能直接执行。它们可以在运行时通过系统的动态链接功能加载到另一个程序中，可用于实现插件和类似的程序功能。删除此选项。

-undefined dynamic_lookup 看起来也很可疑。我猜您是从其他 Makefile 复制了那个和 -bundle 选项。如果您不知道它的用途，那么您也应该放弃它。