Remove caffe plugin (apache#18787)

* Remove caffe plugin

* Fix

* Remove CXX14 feature flag

* Update test

CMakeLists.txt

@@ -74,7 +74,6 @@ option(USE_JEMALLOC "Build with Jemalloc support" OFF)
 option(USE_LIBJPEG_TURBO "Use libjpeg-turbo" OFF)
 option(USE_DIST_KVSTORE "Build with DIST_KVSTORE support" OFF)
 option(USE_PLUGINS_WARPCTC "Use WARPCTC Plugins" OFF)
-option(USE_PLUGIN_CAFFE "Use Caffe Plugin" OFF)
 option(USE_CPP_PACKAGE "Build C++ Package" OFF)
 option(USE_MXNET_LIB_NAMING "Use MXNet library naming conventions." ON)
 option(USE_GPROF "Compile with gprof (profiling) flag" OFF)
@@ -519,39 +518,6 @@ if(USE_OPERATOR_TUNING AND USE_OPENMP)
   add_definitions(-DMXNET_USE_OPERATOR_TUNING=1)
 endif()
 
-if(USE_PLUGIN_CAFFE)
-  if(NOT USE_CUDA)
-    set(CPU_ONLY ON)
-    add_definitions(-DCPU_ONLY=1)
-  endif()
-  if(NOT DEFINED CAFFE_PATH)
-    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/caffe)
-      set(CAFFE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/caffe)
-    else()
-      set(CAFFE_PATH $ENV{CAFFE_PATH})
-    endif()
-  endif()
-  list(APPEND CMAKE_MODULE_PATH ${CAFFE_PATH}/cmake)
-  include_directories(${CAFFE_PATH}/include)
-  include_directories(${CAFFE_PATH}/build/src)
-  include_directories(${CMAKE_BINARY_DIR}/caffe/include)
-  link_directories(${CAFFE_PATH}/build/lib)
-  if(NOT DEFINED CAFFE_PATH)
-    message(FATAL_ERROR "Please set CAFFE_PATH to point to the caffe source installation")
-  endif()
-  FILE(GLOB_RECURSE PLUGINS_SOURCE "plugin/caffe/*.cc" "plugin/caffe/*.h")
-  FILE(GLOB_RECURSE PLUGINS_CUSRC "plugin/caffe/*.cu")
-  list(APPEND SOURCE ${PLUGINS_SOURCE})
-  list(APPEND CUDA ${PLUGINS_CUSRC})
-  include_directories(${CMAKE_BINARY_DIR}/include)
-  add_definitions(-DMXNET_USE_CAFFE=1)
-  list(APPEND mxnet_LINKER_LIBS
-    protobuf boost_system boost_thread boost_filesystem
-    gflags glog caffe
-    ${Caffe_LINKER_LIBS}
-)
-endif()
-
 if (NOT (EXTRA_OPERATORS STREQUAL ""))
     mxnet_source_group("Extra"   GLOB_RECURSE "${EXTRA_OPERATORS}/*.cc")
     mxnet_source_group("Extra\\Cuda"   GLOB_RECURSE "${EXTRA_OPERATORS}/*.cu")
@@ -638,14 +604,6 @@ if(USE_CUDA)
   link_directories(${CUDAToolkit_LIBRARY_DIR})
 endif()
 
-# unsupported: if caffe is a subdirectory of mxnet, load its CMakeLists.txt as well
-if(USE_PLUGIN_CAFFE)
-  if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/caffe)
-    add_subdirectory(caffe)
-  endif()
-endif()
-
-
 if(MSVC)
   set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /EHsc")
   set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /EHsc /Gy")

include/mxnet/libinfo.h

@@ -115,10 +115,6 @@
 #define MXNET_USE_F16C MSHADOW_USE_F16C
 #endif
 
-#ifndef MXNET_USE_CAFFE
-#define MXNET_USE_CAFFE 0
-#endif
-
 #ifndef MXNET_USE_DIST_KVSTORE
 #define MXNET_USE_DIST_KVSTORE 0
 #endif
@@ -183,9 +179,7 @@ enum : unsigned {
   OPENCV,
 
   // Misc
-  CAFFE,
   DIST_KVSTORE,
-  CXX14,
   INT64_TENSOR_SIZE,
 
   // Signal handler to print stack traces on exceptions