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Clement Champetier
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CMake: build AvTranscoder
* Same problem with scons about the java binding : need to generate the java files, reconfigure, and build again to generate class files and the jar. Need to find a solution to skip the reconfigure... * Useful flags to configure using CMake: * CMAKE_BUILD_TYPE: Release / Debug * CMAKE_INSTALL_PREFIX: /path/to/install * FFMPEG_INCLUDE_DIR * FFMPEG_LIBRARY_DIR * Name of output librairies: * avtranscoder.a * avtranscoder.so (link + .so with version) * avtranscoder-py.so (without link) * avtranscoder-java.so (without link)
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‎CMakeLists.txt

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cmake_minimum_required(VERSION 2.8)
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project(AvTranscoder)
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# AvTranscoder version
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set(AVTRANSCODER_VERSION_MAJOR 0)
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set(AVTRANSCODER_VERSION_MINOR 2)
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set(AVTRANSCODER_VERSION_MICRO 1)
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set(AVTRANSCODER_VERSION ${AVTRANSCODER_VERSION_MAJOR}.${AVTRANSCODER_VERSION_MINOR}.${AVTRANSCODER_VERSION_MICRO})
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# Diplay commands being ran by CMake
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set(CMAKE_VERBOSE_MAKEFILE ON)
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# Choose compiler
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set(CMAKE_CXX_COMPILER "g++")
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# CPP flags on debug / release mode
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -fPIC -pg -g")
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fPIC -O3")
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add_subdirectory(src)

‎src/CMakeLists.txt

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# Load project cmake
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set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
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# Get useful variables
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set(AVTRANSCODER_APP_PATH "${PROJECT_SOURCE_DIR}/app" PARENT_SCOPE)
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set(AVTRANSCODER_SRC_PATH "${PROJECT_SOURCE_DIR}/src" PARENT_SCOPE)
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file(GLOB_RECURSE AVTRANSCODER_SRC_FILES "AvTranscoder/*.cpp" "AvTranscoder/*.hpp")
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# Get FFMPEG from parameters
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set(FFMPEG_INCLUDE_DIR "/path/to/ffmpeg/include/" CACHE STRING "")
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set(FFMPEG_LIBRARY_DIR "/path/to/ffmpeg/lib/" CACHE STRING "")
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file(GLOB_RECURSE FFMPEG_LIBS "${FFMPEG_LIBRARY_DIR}/*.so")
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# Include AvTranscoder and FFmpeg
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include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${FFMPEG_INCLUDE_DIR})
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# Create 'avtranscoder' static lib
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add_library(avtranscoder-static STATIC ${AVTRANSCODER_SRC_FILES})
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set_target_properties(avtranscoder-static PROPERTIES LINKER_LANGUAGE CXX)
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set_target_properties(avtranscoder-static PROPERTIES OUTPUT_NAME avtranscoder)
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target_link_libraries(avtranscoder-static ${FFMPEG_LIBS})
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# Create 'avtranscoder' shared lib
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add_library(avtranscoder-shared SHARED ${AVTRANSCODER_SRC_FILES})
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set_target_properties(avtranscoder-shared PROPERTIES LINKER_LANGUAGE CXX)
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set_target_properties(avtranscoder-shared PROPERTIES OUTPUT_NAME avtranscoder)
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set_target_properties(avtranscoder-shared PROPERTIES SOVERSION ${AVTRANSCODER_VERSION})
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target_link_libraries(avtranscoder-shared ${FFMPEG_LIBS})
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### Install AvTranscoder libs and include
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install(
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DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/AvTranscoder"
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DESTINATION "include/"
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FILES_MATCHING
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PATTERN "*.hpp"
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PATTERN "*.i"
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PATTERN "Profiles" EXCLUDE
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)
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set(LIBRARY_OUTPUT_PATH "${PROJECT_BINARY_DIR}/lib")
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set(AVTRANSCODER_LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH}")
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file(GLOB_RECURSE AVTRANSCODER_OUTPUT_LIBRARIES "${AVTRANSCODER_LIBRARY_OUTPUT_PATH}/*")
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install(FILES ${AVTRANSCODER_OUTPUT_LIBRARIES} DESTINATION "lib/")
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### SWIG
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find_package(SWIG)
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if(SWIG_FOUND)
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# Load Modules/UseSWIG.cmake
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include(${SWIG_USE_FILE})
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# Configure Swig
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set(CMAKE_SWIG_OUTDIR "${CMAKE_CURRENT_BINARY_DIR}/AvTranscoder")
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set(AVTRANSCODER_BINDING_FILE "AvTranscoder/avTranscoder.i")
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set_source_files_properties(${AVTRANSCODER_BINDING_FILE} PROPERTIES CPLUSPLUS ON)
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### PYTHON BINDING
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find_package(PythonLibs)
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include_directories(${PYTHON_INCLUDE_PATH})
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# Swig flags
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set(CMAKE_SWIG_FLAGS -c++ -fcompact)
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# Create 'avtranscoder-py' shared lib
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swig_add_module(avtranscoder-py python ${AVTRANSCODER_BINDING_FILE})
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swig_link_libraries(avtranscoder-py avtranscoder-shared ${PYTHON_LIBRARIES})
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# Install python interface
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file(GLOB AVTRANSCODER_PYTHON_BINDING_FILE "${CMAKE_SWIG_OUTDIR}/*.py")
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install(FILES ${AVTRANSCODER_PYTHON_BINDING_FILE} DESTINATION "lib/python2.7/site-packages/AvTranscoder/")
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### JAVA BINDING
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set(ENV{JAVA_HOME} "/usr/java/jdk1.6.0_43") # fix find java SDK
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find_package(Java REQUIRED)
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find_package(JNI REQUIRED)
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include(UseJava)
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include_directories(${JAVA_INCLUDE_PATH})
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include_directories(${JNI_INCLUDE_DIRS})
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# Swig flags
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set(CMAKE_SWIG_FLAGS -c++ -fcompact -package org.AvTranscoder)
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# Create 'avtranscoder-java' shared lib
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swig_add_module(avtranscoder-java java ${AVTRANSCODER_BINDING_FILE})
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swig_link_libraries(avtranscoder-java avtranscoder-shared)
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# Need to generate java files before class files and jar
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set(AVTRANSCODER_JAVA_OUTPUT_PATH "${PROJECT_BINARY_DIR}/src/AvTranscoder")
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if(EXISTS "${AVTRANSCODER_JAVA_OUTPUT_PATH}/Transcoder.java")
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file(GLOB AVTRANSCODER_JAVA_BINDING_FILES "${AVTRANSCODER_JAVA_OUTPUT_PATH}/*.java")
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add_jar(avtranscoder-jar ${AVTRANSCODER_JAVA_BINDING_FILES})
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# Install jar
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install_jar(avtranscoder-jar "share/java/")
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endif()
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else(SWIG_FOUND)
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message("SWIG not found, will not build python and java bindings.")
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endif(SWIG_FOUND)

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