python - Cmake 找不到 boost_python

Question

我正在尝试从 this link 构建这个简单的 boost python 演示在我的 MacOS High Sierra 上。

以下是hello_ext.cpp:

#include <boost/python.hpp>

char const* greet()
{
  return "hello, world";
}

BOOST_PYTHON_MODULE(hello_ext)
{
  using namespace boost::python;
  def("greet", greet);
}

以下是CmakeLists.txt:

cmake_minimum_required(VERSION 3.5)

# Find python and Boost - both are required dependencies
find_package(PythonLibs 2.7 REQUIRED)
find_package(Boost COMPONENTS python REQUIRED)

# Without this, any build libraries automatically have names "lib{x}.so"
set(CMAKE_SHARED_MODULE_PREFIX "")

# Add a shared module - modules are intended to be imported at runtime.
# - This is where you add the source files
add_library(hello_ext MODULE hello_ext.cpp)

# Set up the libraries and header search paths for this target
target_link_libraries(hello_ext ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})
target_include_directories(hello_ext PRIVATE ${PYTHON_INCLUDE_DIRS})

我想我需要安装 python。 Boost 1.69 已经安装，我执行了 brew install boost-python ，效果很好。做一个酿造 list | grep 'boost' 列出了 boost 和 boost-python。

但是，从 build 目录执行 cmake .. 会出现以下问题:

Could not find the following Boost libraries:

      boost_python

No Boost libraries were found.  You may need to set BOOST_LIBRARYDIR to 
the directory containing Boost libraries or BOOST_ROOT to the location 
of Boost.

我在这里错过了什么？

Answer 1

来自 this document :

Note that Boost Python components require a Python version suffix (Boost 1.67 and later), e.g. python36 or python27 for the versions built against Python 3.6 and 2.7, respectively. This also applies to additional components using Python including mpi_python and numpy. Earlier Boost releases may use distribution-specific suffixes such as 2, 3 or 2.7. These may also be used as suffixes, but note that they are not portable.

您找到的示例可能使用了旧版本的 Boost。因此，您可能需要更改此行:

find_package(Boost COMPONENTS python27 REQUIRED)