diff -ur librealsense-2.9.0/CMakeLists.txt librealsense-2.9.0.remove-cflags/CMakeLists.txt
--- librealsense-2.9.0/CMakeLists.txt	2017-12-30 10:06:48.000000000 +0100
+++ librealsense-2.9.0.remove-cflags/CMakeLists.txt	2018-01-02 16:34:54.740186306 +0100
@@ -547,21 +547,10 @@
     find_package (Threads REQUIRED)
     list(APPEND librealsense_PKG_DEPS "Threads")
 
-    set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -fPIC -pedantic -g -D_BSD_SOURCE")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -pedantic -g -Wno-missing-field-initializers")
+    set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -fPIC -D_BSD_SOURCE")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -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-linux-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(${MACHINE} MATCHES "aarch64-linux-gnu")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mstrict-align -ftree-vectorize")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mstrict-align -ftree-vectorize")
-    else(${MACHINE} MATCHES "arm-linux-gnueabihf")
-      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mssse3")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3")
-    endif(${MACHINE} MATCHES "arm-linux-gnueabihf")
 endif()
 
 # Set CMAKE_INSTALL_* if not defined