diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index aaa2809..8926d33 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -36,5 +36,8 @@ target_link_libraries(${PROJECT_NAME}
 #see https://cmake.org/pipermail/cmake/2007-May/014350.html
 #and http://stackoverflow.com/questions/6093547/what-do-r-x86-64-32s-and-r-x86-64-64-relocation-mean/6093910#6093910
 if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" )
-	set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-fPIC")
+	#see https://github.com/CarloWood/cmaketest/blob/master/bar.cmake
+	set_target_properties(${PROJECT_NAME} PROPERTIES
+		POSITION_INDEPENDENT_CODE ON #Compile this object code position independent.
+	)
 endif()
diff --git a/src/pq/CMakeLists.txt b/src/pq/CMakeLists.txt
index 6dbf43e..9108226 100644
--- a/src/pq/CMakeLists.txt
+++ b/src/pq/CMakeLists.txt
@@ -32,5 +32,8 @@ target_compile_features(${PROJECT_NAME}
 #see https://cmake.org/pipermail/cmake/2007-May/014350.html
 #and http://stackoverflow.com/questions/6093547/what-do-r-x86-64-32s-and-r-x86-64-64-relocation-mean/6093910#6093910
 if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" )
-	set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-fPIC")
+	#see https://github.com/CarloWood/cmaketest/blob/master/bar.cmake
+	set_target_properties(${PROJECT_NAME} PROPERTIES
+		POSITION_INDEPENDENT_CODE ON #Compile this object code position independent.
+	)
 endif()