improve CMake build

.gitignore

@@ -29,9 +29,6 @@
 # IPython notebook checkpoints
 .ipynb_checkpoints
 
-# CMake generated files
-*.gen.cmake
-
 # Editor temporaries
 *.swp
 *~

CMakeLists.txt

@@ -1,177 +1,64 @@
 cmake_minimum_required(VERSION 2.8.8)
-project( Caffe )
 
-###    Build Options     ##########################################################################
+# ---[ Caffe project
+project(Caffe C CXX)
 
-option(CPU_ONLY "Build Caffe without GPU support" OFF)
-option(BUILD_PYTHON "Build Python wrapper" OFF)
-option(BUILD_MATLAB "Build Matlab wrapper" OFF)
-option(BUILD_EXAMPLES "Build examples" ON)
-option(BUILD_SHARED_LIBS "Build SHARED libs if ON and STATIC otherwise" OFF)
+# ---[ Using cmake scripts and modules
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
 
-if(NOT BLAS)
-    set(BLAS atlas)
-endif()
+include(cmake/Utils.cmake)
+include(cmake/Targets.cmake)
+include(cmake/Misc.cmake)
+include(cmake/Summary.cmake)
+include(cmake/ConfigGen.cmake)
 
-if(NOT CUDA_TEST_DEVICE)
-    set(CUDA_TEST_DEVICE -1)
-endif()
+# ---[ Options
+caffe_option(CPU_ONLY  "Build Caffe wihtout CUDA support" OFF) # TODO: rename to USE_CUDA
+caffe_option(USE_CUDNN "Build Caffe with cuDNN libary support" ON IF NOT CPU_ONLY)
+caffe_option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+caffe_option(BUILD_python "Build Python wrapper" ON)
+caffe_option(BUILD_matlab "Build Matlab wrapper" OFF IF UNIX OR APPLE)
+caffe_option(BUILD_docs   "Build documentation" ON IF UNIX OR APPLE)
 
-#    Install Prefix
-if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-    set (CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "Default install path" FORCE )
-endif()
+# ---[ Dependencies
+include(cmake/Dependencies.cmake)
 
-###    Configuration    ###########################################################################
-#    Compiler Flags
-set(CMAKE_CXX_COMPILER_FLAGS ${CMAKE_CXX_COMPILER_FLAGS} -Wall)
-set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} -fPIC) # set global flags
-set(CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG}) # set debug flags
-set(CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE}) # set release flags
-
-#    Link Flags
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")  # clang++
-  set(CAFFE_STATIC_LINK -Wl,-force_load $(STATIC_NAME))
-elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")  # g++
-  set(CAFFE_STATIC_LINK -Wl,--whole-archive caffe -Wl,--no-whole-archive)
+# ---[ Flags
+if(UNIX OR APLE)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall")
 endif()
 
-#    Global Definitions
-if(CPU_ONLY)
-    add_definitions(-DCPU_ONLY)
-endif()
-
-#    Include Directories
-set(${PROJECT_NAME}_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/include)
-include_directories(${${PROJECT_NAME}_INCLUDE_DIRS})
-include_directories(${CMAKE_SOURCE_DIR}/src)
-
-#    CMake Scripts dir
-set(CMAKE_SCRIPT_DIR ${CMAKE_SOURCE_DIR}/CMakeScripts)
-
-#	 CMake module path for custom module finding
-set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SCRIPT_DIR})
-
-###    Dependencies    ##########################################################################
-
-#    Boost
-find_package(Boost 1.46 COMPONENTS system thread REQUIRED)
-include_directories(${Boost_INCLUDE_DIR})
-link_directories(${Boost_LIBRARY_DIRS})
-
-#    CUDA
-if(NOT CPU_ONLY)
-    find_package(CUDA 5.5 REQUIRED)
-    include_directories(${CUDA_INCLUDE_DIRS})
-
-    set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS}
-            -gencode arch=compute_20,code=sm_20
-            -gencode arch=compute_20,code=sm_21
-            -gencode arch=compute_30,code=sm_30
-            -gencode arch=compute_35,code=sm_35
-    )
-
-    # https://github.com/ComputationalRadiationPhysics/picongpu/blob/master/src/picongpu/CMakeLists.txt
-    # work-arounds
-    if(Boost_VERSION EQUAL 105500)
-        # see https://svn.boost.org/trac/boost/ticket/9392
-        message(STATUS "Boost: Applying noinline work around")
-        # avoid warning for CMake >= 2.8.12
-        set(CUDA_NVCC_FLAGS
-          "${CUDA_NVCC_FLAGS} \"-DBOOST_NOINLINE=__attribute__((noinline))\" ")
-    endif(Boost_VERSION EQUAL 105500)
+if(APPLE)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libstdc++")
 endif()
 
-#    Threads
-find_package(Threads REQUIRED)
-
-#	 Google-glog
-find_package(Glog REQUIRED)
-include_directories(${GLOG_INCLUDE_DIRS})
-
-#    Google-gflags
-find_package(GFlags REQUIRED)
-include_directories(${GFLAGS_INCLUDE_DIRS})
-
-#    BLAS
-if(BLAS STREQUAL "atlas")
-
-    find_package(Atlas REQUIRED)
-    include_directories(${Atlas_INCLUDE_DIR})
-    set(BLAS_LIBRARIES ${Atlas_LIBRARIES})
-
-elseif(BLAS STREQUAL "open")
+add_definitions(-DGTEST_USE_OWN_TR1_TUPLE)
 
-    find_package(OpenBLAS REQUIRED)
-    include_directories(${OpenBLAS_INCLUDE_DIR})
-    set(BLAS_LIBRARIES ${OpenBLAS_LIB})
+# ---[ Warnings
+caffe_warnings_disable(CMAKE_CXX_FLAGS -Wno-sign-compare -Wno-uninitialized)
 
-elseif(BLAS STREQUAL "mkl")
+# ---[ Config generation
+configure_file(cmake/Templates/caffe_config.h.in "${CMAKE_BINARY_DIR}/caffe_config.h")
 
-    find_package(MKL REQUIRED)
-    include_directories(${MKL_INCLUDE_DIR})
-    set(BLAS_LIBRARIES ${MKL_LIBRARIES})
-
-endif()
-
-#    HDF5
-find_package(HDF5 COMPONENTS HL REQUIRED)
-include_directories(${HDF5_INCLUDE_DIRS})
-
-#    LevelDB
-find_package(LevelDB REQUIRED)
-include_directories(${LEVELDB_INCLUDE})
-if(LEVELDB_FOUND)
-    find_package(Snappy REQUIRED)
-    include_directories(${SNAPPY_INCLUDE_DIR})
-    set(LEVELDB_LIBS
-        ${LEVELDB_LIBS}
-        ${SNAPPY_LIBS}
-    )
-endif()
-
-#    LMDB
-find_package(LMDB REQUIRED)
-include_directories(${LMDB_INCLUDE_DIR})
-
-#    OpenCV
-find_package(OpenCV REQUIRED)
-include_directories(${OpenCV_INCLUDE_DIRS})
-
-###    Subdirectories    ##########################################################################
+# ---[ Includes
+set(Caffe_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/include)
+include_directories(${Caffe_INCLUDE_DIR} ${CMAKE_BINARY_DIR})
+include_directories(BEFORE src) # This is needed for gtest.
 
+# ---[ Subdirectories
 add_subdirectory(src/gtest)
 add_subdirectory(src/caffe)
 add_subdirectory(tools)
+add_subdirectory(examples)
+add_subdirectory(python)
+add_subdirectory(matlab)
+add_subdirectory(docs)
 
-if(BUILD_EXAMPLES)
-    message(STATUS "Examples enabled")
-    add_subdirectory(examples)
-endif()
-
-if(BUILD_PYTHON)
-    message(STATUS "Python enabled")
-    add_subdirectory(python)
-endif()
-
-if(BUILD_MATLAB)
-    message(STATUS "Matlab enabled")
-    add_subdirectory(matlab)
-endif()
-
-###    Lint Target Setup    ##########################################################################
-
-set(LINT_TARGET lint)
-set(LINT_SCRIPT ${CMAKE_SCRIPT_DIR}/lint.cmake)
-add_custom_target(
-    ${LINT_TARGET}
-    COMMAND ${CMAKE_COMMAND} -P ${LINT_SCRIPT}
-)
-
-###    Install    #################################################################################
-
-#    Install Includes
-file(GLOB folders ${${PROJECT_NAME}_INCLUDE_DIRS}/*)
-install(DIRECTORY ${folders} DESTINATION include)
+# ---[ Linter target
+add_custom_target(lint COMMAND ${CMAKE_COMMAND} -P ${CMAKE_SOURCE_DIR}/cmake/lint.cmake)
 
+# ---[ Configuration summary
+caffe_print_configuration_summary()
 
+# ---[ Export configs generation
+caffe_generate_export_configs()