diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0c7e0cb..629e10bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -174,27 +174,6 @@ if(UNIX)
     else()
       message( FATAL_ERROR "Failed to find libusb-1.0" )
     endif(LIBUSB1_FOUND)
-
-    set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -fPIC -pedantic -g -D_BSD_SOURCE")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -pedantic -g -Ofast -Wno-missing-field-initializers")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-switch -Wno-multichar")
-
-    execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpmachine OUTPUT_VARIABLE MACHINE)
-    if(${MACHINE} MATCHES "arm-.*-gnueabihf")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mfpu=neon -mfloat-abi=hard -ftree-vectorize")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon -mfloat-abi=hard -ftree-vectorize")
-    elseif(${MACHINE} MATCHES "arm-.*-gnueabi")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -ftree-vectorize")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftree-vectorize")
-    elseif(${MACHINE} MATCHES "aarch64|ppc64")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mstrict-align -ftree-vectorize")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mstrict-align -ftree-vectorize")
-    elseif(${MACHINE} MATCHES "x86_64-.*|i.86-.*")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mssse3")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3")
-    else(${MACHINE} MATCHES "arm-.*-gnueabihf")
-      message ( WARNING "ABI is not configured; no extra compile flags set." )
-    endif(${MACHINE} MATCHES "arm-.*-gnueabihf")
 endif()
 
 # Set CMAKE_INSTALL_* if not defined