Restrict swig targets includes (#1221)

Signed-off-by: Andrei Lebedev <lebdron@gmail.com>

shared_model/bindings/CMakeLists.txt

@@ -37,7 +37,6 @@ if (SWIG_PYTHON OR SWIG_JAVA OR SWIG_CSHARP OR SWIG_NODE)
     if (SHARED_MODEL_DISABLE_COMPATIBILITY)
         set(CMAKE_SWIG_FLAGS "-DDISABLE_BACKWARD")
     endif()
-    include_directories(${CMAKE_CURRENT_SOURCE_DIR})
     set_source_files_properties(bindings.i PROPERTIES CPLUSPLUS ON)
     set_property(GLOBAL PROPERTY SWIG_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR})
 
@@ -51,28 +50,29 @@ if (SWIG_PYTHON)
         find_package(PythonLibs 3.6 REQUIRED)
     endif()
 
-    # path to where Python.h is found
-    include_directories(${PYTHON_INCLUDE_DIRS})
-
     if (${CMAKE_SYSTEM_NAME} STREQUAL Darwin)
         set(MAC_OPTS "-flat_namespace -undefined suppress")
     endif()
 
     swig_add_library(iroha LANGUAGE python SOURCES bindings.i)
     swig_link_libraries(iroha ${Python_LIBRARIES} bindings ${MAC_OPTS})
     add_custom_target(irohapy DEPENDS ${SWIG_MODULE_iroha_REAL_NAME})
-
+    # path to where Python.h is found
+    target_include_directories(${SWIG_MODULE_iroha_REAL_NAME} PUBLIC
+        ${PYTHON_INCLUDE_DIRS}
+        )
 endif()
 
 if (SWIG_JAVA)
     find_package(JNI REQUIRED)
-    # the include path to jni.h
-    include_directories(${JAVA_INCLUDE_PATH})
-    # the include path to jni_md.h
-    include_directories(${JAVA_INCLUDE_PATH2})
 
     swig_add_library(irohajava LANGUAGE java SOURCES bindings.i)
     swig_link_libraries(irohajava ${Java_LIBRARIES} bindings)
+    # the include path to jni.h and jni_md.h
+    target_include_directories(${SWIG_MODULE_irohajava_REAL_NAME} PUBLIC
+        ${JAVA_INCLUDE_PATH}
+        ${JAVA_INCLUDE_PATH2}
+        )
 endif()
 
 if (SWIG_CSHARP)
@@ -83,10 +83,6 @@ endif()
 
 if (SWIG_NODE)
     find_package (nodejs REQUIRED)
-    include_directories (
-            ${NODEJS_INCLUDE_DIRS}
-            ${CMAKE_CURRENT_SOURCE_DIR}/..
-            )
 
     set (V8_VERSION_HEX 0x0${V8_VERSION_MAJOR}${V8_VERSION_MINOR}${V8_VERSION_PATCH})
     string (LENGTH "${V8_VERSION_HEX}" V8_VERSION_HEX_length)
@@ -110,4 +106,7 @@ if (SWIG_NODE)
         )
     set_target_properties(irohanode PROPERTIES PREFIX ${CMAKE_STATIC_LIBRARY_PREFIX})
     target_link_libraries(irohanode bindings ${MAC_OPTS})
+    target_include_directories(${SWIG_MODULE_irohanode_REAL_NAME} PUBLIC
+        ${NODEJS_INCLUDE_DIRS}
+        )
 endif()