Index: Mk/bsd.gecko.mk
===================================================================
--- Mk/bsd.gecko.mk
+++ Mk/bsd.gecko.mk
@@ -147,6 +147,11 @@
 RUSTFLAGS+=	${CFLAGS:M-mcpu=*:S/-mcpu=/-C target-cpu=/}
 .endif
 
+.if defined(WITH_CCACHE_BUILD)
+MOZ_OPTIONS+=	--with-ccache
+BUILD_DEPENDS+=	ccache:devel/ccache # XXX host ccache not detected/honoured
+.endif
+
 # Standard depends
 _ALL_DEPENDS=	event ffi graphite harfbuzz hunspell icu jpeg nspr nss png pixman sqlite vpx