diff --git a/port/libusb/CMakeLists.txt b/port/libusb/CMakeLists.txt
index eada67bcb..094cbef07 100644
--- a/port/libusb/CMakeLists.txt
+++ b/port/libusb/CMakeLists.txt
@@ -181,11 +181,13 @@ set (LWIP_EXAMPLES pan_lwip_http_server)
 # create targets
 foreach(EXAMPLE_FILE ${EXAMPLES_C})
 	get_filename_component(EXAMPLE ${EXAMPLE_FILE} NAME_WE)
-	set (SOURCE_FILES ${EXAMPLE_FILE})
+
+	# get c file
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add lwip sources for lwip examples
 	if ( "${LWIP_EXAMPLES}" MATCHES ${EXAMPLE} )
-		list(APPEND SOURCE_FILES ${SOURCES_LWIP})
+		list(APPEND SOURCES_EXAMPLE ${SOURCES_LWIP})
 	endif()
 
 	# add GATT DB creation
@@ -197,10 +199,10 @@ foreach(EXAMPLE_FILE ${EXAMPLES_C})
 			COMMAND ${Python_EXECUTABLE}
 			ARGS ${BTSTACK_ROOT}/tool/compile_gatt.py ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 		)
-		list(APPEND SOURCE_FILES ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h)
+		list(APPEND SOURCES_EXAMPLE ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h)
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${SOURCE_FILES} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE} )
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE_FILE)
diff --git a/port/posix-h4-zephyr/CMakeLists.txt b/port/posix-h4-zephyr/CMakeLists.txt
index 9edaf0df4..9c74a1985 100644
--- a/port/posix-h4-zephyr/CMakeLists.txt
+++ b/port/posix-h4-zephyr/CMakeLists.txt
@@ -97,15 +97,14 @@ include(../../example/CMakeLists.txt)
 set (EXAMPLES ${EXAMPLES_LE_ONLY} ${EXAMPLES_GENERAL})
 
 # create targets
-set (EXAMPLES_C)
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "../../example/${EXAMPLE}.c")
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-		add_custom_command(
+	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
 			COMMAND ${Python_EXECUTABLE}
@@ -115,6 +114,6 @@ foreach(EXAMPLE ${EXAMPLES})
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${EXAMPLE_FILE} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)
diff --git a/port/posix-h4/CMakeLists.txt b/port/posix-h4/CMakeLists.txt
index dd6b8b715..88e29e9c2 100644
--- a/port/posix-h4/CMakeLists.txt
+++ b/port/posix-h4/CMakeLists.txt
@@ -166,13 +166,11 @@ list(REMOVE_ITEM EXAMPLES "mesh_node_demo")
 # create targets
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "${BTSTACK_ROOT}/example/${EXAMPLE}.c")
-	set (SOURCE_FILES ${EXAMPLE_FILE})
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-	  	message("${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h <- ${Python_EXECUTABLE} ${BTSTACK_ROOT}/tool/compile_gatt.py ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h")
 	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
@@ -183,6 +181,6 @@ foreach(EXAMPLE ${EXAMPLES})
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${SOURCE_FILES} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)
diff --git a/port/windows-h4-da14585/CMakeLists.txt b/port/windows-h4-da14585/CMakeLists.txt
index 2a373ce31..5a0eff09e 100644
--- a/port/windows-h4-da14585/CMakeLists.txt
+++ b/port/windows-h4-da14585/CMakeLists.txt
@@ -77,21 +77,21 @@ list(REMOVE_ITEM EXAMPLES "mesh_node_demo")
 # create targets
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "../../example/${EXAMPLE}.c")
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-		add_custom_command(
+	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
-			DEPENDS ${CMAKE_SOURCE_DIR}/../../example/${EXAMPLE}.gatt
-			COMMAND ${CMAKE_SOURCE_DIR}/../../tool/compile_gatt.py
-			ARGS ${CMAKE_SOURCE_DIR}/../../example/${EXAMPLE}.gatt ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
+			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
+			COMMAND ${Python_EXECUTABLE}
+			ARGS ${BTSTACK_ROOT}/tool/compile_gatt.py ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 		)
 		list(APPEND SOURCE_FILES ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h)
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${EXAMPLE_FILE} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)
diff --git a/port/windows-h4-zephyr/CMakeLists.txt b/port/windows-h4-zephyr/CMakeLists.txt
index 79e7f0fa2..42852d4eb 100644
--- a/port/windows-h4-zephyr/CMakeLists.txt
+++ b/port/windows-h4-zephyr/CMakeLists.txt
@@ -77,12 +77,12 @@ list(REMOVE_ITEM EXAMPLES "mesh_node_demo")
 # create targets
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "../../example/${EXAMPLE}.c")
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-		add_custom_command(
+	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
 			COMMAND ${Python_EXECUTABLE}
@@ -92,6 +92,6 @@ foreach(EXAMPLE ${EXAMPLES})
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${EXAMPLE_FILE} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)
diff --git a/port/windows-h4/CMakeLists.txt b/port/windows-h4/CMakeLists.txt
index 52796d486..dfa901363 100644
--- a/port/windows-h4/CMakeLists.txt
+++ b/port/windows-h4/CMakeLists.txt
@@ -167,13 +167,12 @@ list(REMOVE_ITEM EXAMPLES "mesh_node_demo")
 # create targets
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "${BTSTACK_ROOT}/example/${EXAMPLE}.c")
-	set (SOURCE_FILES ${EXAMPLE_FILE})
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-		add_custom_command(
+	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
 			COMMAND ${Python_EXECUTABLE}
@@ -183,6 +182,6 @@ foreach(EXAMPLE ${EXAMPLES})
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${SOURCE_FILES} )
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
 	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)
diff --git a/port/windows-winusb/CMakeLists.txt b/port/windows-winusb/CMakeLists.txt
index 3c3e2896e..faf89dc58 100644
--- a/port/windows-winusb/CMakeLists.txt
+++ b/port/windows-winusb/CMakeLists.txt
@@ -85,15 +85,14 @@ list(REMOVE_DUPLICATES EXAMPLES)
 list(REMOVE_ITEM EXAMPLES "mesh_node_demo")
 
 # create targets
-set (EXAMPLES_C)
 foreach(EXAMPLE ${EXAMPLES})
 	# get c file
-	file(GLOB EXAMPLE_FILE "../../example/${EXAMPLE}.c")
+	set (SOURCES_EXAMPLE ${BTSTACK_ROOT}/example/${EXAMPLE}.c)
 
 	# add GATT DB creation
 	if ( "${EXAMPLES_GATT_FILES}" MATCHES ${EXAMPLE} )
 		message("example ${EXAMPLE} -- with GATT DB")
-		add_custom_command(
+	  	add_custom_command(
 		    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.h
 			DEPENDS ${BTSTACK_ROOT}/example/${EXAMPLE}.gatt
 			COMMAND ${Python_EXECUTABLE}
@@ -103,6 +102,6 @@ foreach(EXAMPLE ${EXAMPLES})
 	else()
 		message("example ${EXAMPLE}")
 	endif()
-	add_executable(${EXAMPLE} ${EXAMPLE_FILE} )
-	target_link_libraries(${EXAMPLE} btstack setupapi winusb)
+	add_executable(${EXAMPLE} ${SOURCES_EXAMPLE})
+	target_link_libraries(${EXAMPLE} btstack)
 endforeach(EXAMPLE)