-fno-pretty-templates @gol
-frepo -fno-rtti -fstats -ftemplate-backtrace-limit=@var{n} @gol
-ftemplate-depth=@var{n} @gol
--fno-threadsafe-statics -fuse-cxa-atexit -fno-weak -nostdinc++ @gol
+-fno-threadsafe-statics -fno-use-all-virtuals -fuse-cxa-atexit @gol
+-fno-weak -nostdinc++ @gol
-fvisibility-inlines-hidden @gol
-fvtable-verify=@var{std|preinit|none} @gol
-fvtv-counts -fvtv-debug @gol
option to reduce code size slightly in code that doesn't need to be
thread-safe.
+@item -fno-use-all-virtuals
+@opindex fno-use-all-virtuals
+By default, G++ now treats all virtual functions declared in a
+translation unit as odr-used, so they will be instantiated or
+synthesized if possible even if they are not needed for the final
+output. This is done so that such functions can be inlined after
+devirtualization changes an indirect call into a direct call. If this
+instantiation and synthesis prevents your code from compiling
+successfully, you can disable it with this option.
+
@item -fuse-cxa-atexit
@opindex fuse-cxa-atexit
Register destructors for objects with static storage duration with the