CMake: Cleanup targets with transitive dependencies

src/Mod/Mesh/App/CMakeLists.txt

@@ -1,3 +1,5 @@
+add_library(Mesh SHARED)
+
 if(WIN32)
     add_definitions(-DFCAppMesh -DWM4_FOUNDATION_DLL_EXPORT)
 endif(WIN32)
@@ -8,19 +10,14 @@ include_directories(
     ${CMAKE_SOURCE_DIR}/src/3rdParty/libkdtree
 )
 
-include_directories(
+target_include_directories(
+    Mesh
     SYSTEM
-    ${Boost_INCLUDE_DIRS}
-    ${PYCXX_INCLUDE_DIR}
-    ${Python3_INCLUDE_DIRS}
-    ${XercesC_INCLUDE_DIRS}
-    ${ZIPIOS_INCLUDES}
-    ${ZLIB_INCLUDE_DIR}
+    PUBLIC
     ${EIGEN3_INCLUDE_DIR}
 )
 
 set(Mesh_LIBS
-    ${Boost_LIBRARIES}
     FreeCADBase
     FreeCADApp
 )
@@ -417,7 +414,7 @@ if (EIGEN3_NO_DEPRECATED_COPY)
         PROPERTIES COMPILE_FLAGS ${EIGEN3_NO_DEPRECATED_COPY})
 endif ()
 
-add_library(Mesh SHARED ${Core_SRCS} ${WildMagic4_SRCS} ${Mesh_SRCS})
+target_sources(Mesh PRIVATE ${Core_SRCS} ${WildMagic4_SRCS} ${Mesh_SRCS})
 target_link_libraries(Mesh ${Mesh_LIBS})
 if (FREECAD_WARN_ERROR)
     target_compile_warn_error(Mesh)

src/Mod/Mesh/Gui/CMakeLists.txt

@@ -2,18 +2,6 @@ include_directories(
     ${CMAKE_CURRENT_BINARY_DIR}
 )
 
-include_directories(
-    SYSTEM
-    ${Boost_INCLUDE_DIRS}
-    ${COIN3D_INCLUDE_DIRS}
-    ${COIN3D_INCLUDE_DIRS}/Inventor/annex
-    ${PYCXX_INCLUDE_DIR}
-    ${Python3_INCLUDE_DIRS}
-    ${ZIPIOS_INCLUDES}
-    ${ZLIB_INCLUDE_DIR}
-    ${XercesC_INCLUDE_DIRS}
-)
-
 if(MSVC)
     include_directories(
         ${CMAKE_SOURCE_DIR}/src/3rdParty/OpenGL/api