message: Remove CFLAGS -mcpu=native and -mtune=native
  To avoid architecture specific issues with these flags when binary releases
  are built from source code.
diff: @@ -61,7 +61,6 @@ ifneq ($(COMPILER),clang)
  NO_POINTER_SIGN =
  NO_CLOBBERED = -Wno-clobbered
  NO_SUGGEST_ATTRIBUTE_FORMAT = -Wno-suggest-attribute=format
  - MCPU_OPT = -mcpu=native
  else
  NO_MAYBE_UNINITIALIZED =
  NO_OLD_STYLE_DECLARATION =
  @@ -71,16 +70,15 @@ else
  NO_POINTER_SIGN = -Wno-pointer-sign
  NO_CLOBBERED =
  NO_SUGGEST_ATTRIBUTE_FORMAT =
  - MCPU_OPT =
  endif
  # Investigate: Improving C++ Builds with Split DWARF
  # http://www.productive-cpp.com/improving-cpp-builds-with-split-dwarf/
  -CFLAGS = $(WARNINGS) $(MCPU_OPT) -mtune=native -fno-exceptions -gdwarf-4 -g2 -ggnu-pubnames -gsplit-dwarf $(SDL2FLAGS) $(GTK3FLAGS) $(I915_PERF_CFLAGS) -I/usr/include/freetype2
  +CFLAGS = $(WARNINGS) -fno-exceptions -gdwarf-4 -g2 -ggnu-pubnames -gsplit-dwarf $(SDL2FLAGS) $(GTK3FLAGS) $(I915_PERF_CFLAGS) -I/usr/include/freetype2
  CFLAGS += -DUSE_FREETYPE -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64
  CXXFLAGS = -fno-rtti -Woverloaded-virtual $(CXXWARNINGS)
  -LDFLAGS = $(MCPU_OPT) -mtune=native -gdwarf-4 -g2 -Wl,--build-id=sha1
  +LDFLAGS = -gdwarf-4 -g2 -Wl,--build-id=sha1
  LIBS = -Wl,--no-as-needed -lm -ldl -lpthread -lfreetype -lstdc++ $(SDL2LIBS) $(I915_PERF_LIBS)
  ifneq ("$(wildcard /usr/bin/ld.gold)","")
  