--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,12 +38,6 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
   target_compile_definitions(miniupnpc-private INTERFACE _DARWIN_C_SOURCE)
 endif ()
 
-# Set compiler specific build flags
-if (CMAKE_COMPILER_IS_GNUCC AND NOT CMAKE_SYSTEM_NAME STREQUAL "AmigaOS")
-  set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-  target_compile_options(miniupnpc-private INTERFACE -Wall)
-endif ()
-
 # Suppress noise warnings
 if (MSVC)
   target_compile_definitions(miniupnpc-private INTERFACE _CRT_SECURE_NO_WARNINGS)
