CODEWITHSUNDEEP
pythonc++cmakeswig
Bluegreen17
Bluegreen17

Reputation: 993

Using CMake for a c++ extension in Python using SWIG with dependencies on pre-existing libraries

Starting with SWIG's help file, I want to run the following code 

# This is a CMake example for Python

FIND_PACKAGE(SWIG REQUIRED)
INCLUDE(${SWIG_USE_FILE})

FIND_PACKAGE(PythonLibs)
INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_PATH})

INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})

SET(CMAKE_SWIG_FLAGS "")

SET_SOURCE_FILES_PROPERTIES(example.i PROPERTIES CPLUSPLUS ON)
SET_SOURCE_FILES_PROPERTIES(example.i PROPERTIES SWIG_FLAGS "-includeall")
SWIG_ADD_MODULE(example python example.i example.cxx) # I need to link to an external library
SWIG_LINK_LIBRARIES(example ${PYTHON_LIBRARIES})

This would work fine except that example.cxx in my case needs to be linked to a prexisting library, let's call it libmylibrary.a. I tried add this to the SWIG_LINK_LIBRARIES command but that didn't do the trick. Any ideas?

Upvotes: 1

Views: 2764

Answers (1)

Bluegreen17
Bluegreen17

Reputation: 993

It turns out you just need to modify the last line above to read

SWIG_LINK_LIBRARIES(example mylibrary ${PYTHON_LIBRARIES})

where mylibrary is understood at the libmylibrary.a file.

Upvotes: 4

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