[英]build hello world using Boost.python
我只是在学习使用Boost.Python,所以如果它看起来很傻,请原谅。 我从这里有了这些代码,可以将c ++函数包装在python中。
我还搜索了几个小时以找到一个有效的示例,最相关的问题是this ,但是我仍然无法构建和运行。
这是zoo.cpp
#include <boost/python.hpp>
#include <string>
/*
* This is the C++ function we write and want to expose to Python.
*/
const std::string hello() {
return std::string("hello, zoo");
}
/*
* This is a macro Boost.Python provides to signify a Python extension module.
*/
BOOST_PYTHON_MODULE(zoo) {
// An established convention for using boost.python.
using namespace boost::python;
// Expose the function hello().
def("hello", hello);
}
和visit_zoo.py
import zoo
# In zoo.cpp we expose hello() function, and it now exists in the zoo module.
assert 'hello' in dir(zoo)
# zoo.hello is a callable.
assert callable(zoo.hello)
# Call the C++ hello() function from Python.
print zoo.hello()
这是makefile
CC = g++
PYLIBPATH = $(shell python-config --exec-prefix)/lib
LIB = -L$(PYLIBPATH) $(shell python-config --libs) -lboost_python
OPTS = $(shell python-config --include) -O2
default: zoo.so
@python ./visit_zoo.py
zoo.so: zoo.o
$(CC) $(LIB) -Wl,-rpath,$(PYLIBPATH) -shared $< -o $@
zoo.o: zoo.cpp Makefile
$(CC) $(OPTS) -c $< -o $@
clean:
rm -rf *.so *.o
.PHONY: default clean
错误信息:
g++ Usage: /usr/bin/python-config --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--configdir -O2 -c zoo.cpp -o zoo.o
g++: error: Usage:: No such file or directory
g++: error: missing argument to ‘--prefix’
/bin/sh: 1: --exec-prefix: not found
/bin/sh: 1: --includes: not found
/bin/sh: 1: --libs: not found
/bin/sh: 1: --cflags: not found
/bin/sh: 1: --ldflags: not found
/bin/sh: 1: --extension-suffix: not found
/bin/sh: 1: --help: not found
/bin/sh: 1: --configdir: not found
Makefile:13: recipe for target 'zoo.o' failed
make: *** [zoo.o] Error 127
我使用了这个有效的makefile。 谢谢阅读。 我从这里得到帮助
PYTHON_VERSION = 2.7
PYTHON_INCLUDE = /usr/include/python$(PYTHON_VERSION)
# location of the Boost Python include files and library
BOOST_INC = /usr/include
BOOST_LIB = /usr/lib
# compile mesh classes
TARGET = zoo
$(TARGET).so: $(TARGET).o
# g++ -shared -Wl,--export-dynamic $(TARGET).o -L$(BOOST_LIB) -lboost_python-$(PYTHON_VERSION) -L/usr/lib/python$(PYTHON_VERSION)/config -lpython$(PYTHON_VERSION) -o $(TARGET).so
g++ -shared -Wl,--export-dynamic $(TARGET).o -L$(BOOST_LIB) -lboost_python -L/usr/lib/python$(PYTHON_VERSION)/config -lpython$(PYTHON_VERSION) -o $(TARGET).so
$(TARGET).o: $(TARGET).cpp
g++ -I$(PYTHON_INCLUDE) -I$(BOOST_INC) -fPIC -c $(TARGET).cpp
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