--- make.conf.example
+++ make.conf.example
@@ -39,9 +39,24 @@
 # -frecord-gcc-switches, since otherwise the check could result in false
 # positive results.
 #
-# Please refer to the GCC manual for a list of possible values.
+# -mcpu specifies the name of the target processor, optionally suffixed by one
+# or more feature modifiers. -march and -mtune are automatically deduced,
+# unless set as well.
+# -march specifies the name of the target architecture, optionally suffixed
+# by one or more feature modifiers.
+# -mtune specifies the name of the target processor for which to tune
+# performance of the code.
+# Set -march and -mtune if you want to build binaries that run with the given
+# architecture instructions and is tuned for a more specific CPU without
+# using its added instructions.
+# Set only -mcpu if you want to build binaries that are most optimal for the
+# given CPU, but might not run on others.
+#
+# Please refer to the GCC manual "AArch64 Options" section for a list of
+# possible architecture, CPU and feature values.
 #
 #CFLAGS="-O2 -pipe"
+#CLFAGS="-O2 -pipe -mcpu=native"
 #
 # If you set a CFLAGS above, then this line will set your default C++ flags to
 # the same settings.
@@ -76,7 +91,7 @@
 # DO NOT PUT ANYTHING BUT YOUR SPECIFIC ~ARCHITECTURE IN THE LIST.
 # IF YOU ARE UNSURE OF YOUR ARCH, OR THE IMPLICATIONS, DO NOT MODIFY THIS.
 #
-#ACCEPT_KEYWORDS="~arch"
+#ACCEPT_KEYWORDS="~arm64"
 
 # ACCEPT_LICENSE is used to mask packages based on licensing restrictions.
 # It may contain both license and group names, where group names are