Added script to build with emscripten backend

CMakeLists.txt

@@ -114,6 +114,15 @@ ELSE()
   SET(FREETYPE_LIBRARY "")
 ENDIF()
 
+#IF("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
+#  SET(CMAKE_C_FLAGS_RELEASE "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_C_FLAGS_RELEASE}")
+#  SET(CMAKE_CXX_FLAGS_RELEASE "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_CXX_FLAGS_RELEASE}")
+#  SET(CMAKE_C_FLAGS_DEBUG "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_C_FLAGS_DEBUG}")
+#  SET(CMAKE_CXX_FLAGS_DEBUG "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_CXX_FLAGS_DEBUG}")
+#  SET(CMAKE_EXE_LINKER_FLAGS "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_EXE_LINKER_FLAGS}")
+#  SET(CMAKE_SHARED_LINKER_FLAGS "--save-bc ${CMAKE_SOURCE_DIR}/libs/bc/ ${CMAKE_SHARED_LINKER_FLAGS}")
+#ENDIF()
+
 IF( NOT (NETFX_CORE OR ANDROID OR IOS ) )
   
   #  IF (NOT WIN32)
@@ -130,8 +139,7 @@ IF( NOT (NETFX_CORE OR ANDROID OR IOS ) )
     SET(CMAKE_EXPORT_NO_PACKAGE_REGISTRY ON)
     
     #ADD_SUBDIRECTORY(vtk) # always build vtk as static library
-	
-    
+	    
     SET(BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS_CACHE})
   ENDIF()
   #  IF (NOT WIN32)

Emgu.CV.Extern/CMakeLists.txt

@@ -2936,11 +2936,15 @@ ENDIF()
 #ENDIF()
 
 
+
 IF(IOS)
   add_library(${the_target} STATIC ${extern_srcs} ${extern_hdrs} )
 ELSEIF(WIN32)
   #add the version information for windows binary
   add_library(${the_target} SHARED ${extern_srcs} ${extern_hdrs} ${PROJECT_SOURCE_DIR}/version.rc )
+ELSEIF("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
+  add_library(${the_target} SHARED ${extern_srcs} ${extern_hdrs} )
+  set_target_properties(${the_target} PROPERTIES SUFFIX ".bc")    
 ELSE()
   add_library(${the_target} SHARED ${extern_srcs} ${extern_hdrs} )
   IF (APPLE)

platforms/emscripten/cmake_configure.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+cd "$(dirname "$0")"
+
+mkdir -p build
+cd build
+CFLAGS=-fPIC CXXFLAGS=-fPIC emcmake cmake -DBUILD_TESTS:BOOL=FALSE -DBUILD_PERF_TESTS:BOOL=FALSE -DBUILD_opencv_apps:BOOL=FALSE -DBUILD_DOCS:BOOL=FALSE -DWITH_TBB:BOOL=TRUE -DWITH_CUDA:BOOL=FALSE -DWITH_IPP:BOOL=FALSE -DWITH_EIGEN:BOOL=FALSE -DOPENCV_EXTRA_MODULES_PATH=$PWD/../../../opencv_contrib/modules -DBUILD_opencv_ts:BOOL=FALSE -DBUILD_opencv_java:BOOL=FALSE -DBUILD_opencv_python2:BOOL=FALSE -DBUILD_opencv_python3:BOOL=FALSE -DBUILD_SHARED_LIBS:BOOL=FALSE -DCMAKE_BUILD_TYPE:String="Release" -DCMAKE_CXX_STANDARD:String="11" -DBUILD_ITT:BOOL=FALSE -DCV_ENABLE_INTRINSICS:BOOL=FALSE -DWITH_OPENCL:BOOL=OFF -DBUILD_JPEG:BOOL=TRUE -DBUILD_PNG:BOOL=TRUE -DEMGU_CV_WITH_TESSERACT:BOOL=FALSE $PWD/../../..
+emmake make cvextern
+cd ..

tests/cvextern_test/CMakeLists.txt

@@ -120,7 +120,7 @@ IF(EMGU_ENABLE_SSE)
   IF(MSVC AND EMGUCV_ARCH MATCHES "win32" AND (NOT CV_ICC)) 
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")        ## Optimization
   ENDIF()
-  IF (NOT WIN32)
+  IF ((NOT WIN32) AND NOT ("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten"))
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -latomic")
   ENDIF()
 ENDIF()
@@ -133,6 +133,10 @@ target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS}
 #  ${GEOTIFF_LIBRARY}
 )
 
+IF("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
+  set_target_properties(${the_target} PROPERTIES SUFFIX ".html")
+ENDIF()
+
 IF(DEFINED EMGUCV_PLATFORM_TOOLSET)
   set_target_properties(${the_target} PROPERTIES PLATFORM_TOOLSET ${EMGUCV_PLATFORM_TOOLSET})
 ENDIF()