diff --git a/Mk/Features/lto.mk b/Mk/Features/lto.mk
--- a/Mk/Features/lto.mk
+++ b/Mk/Features/lto.mk
@@ -8,10 +8,18 @@
 LTO_Include_MAINTAINER=	pkubaj@FreeBSD.org
 
 .  if !defined(LTO_UNSAFE)
+.    if defined(_INCLUDE_USES_CARGO_MK)
+   CARGO_ENV+=	CARGO_PROFILE_RELEASE_LTO="true" \
+		CARGO_PROFILE_RELEASE_PANIC="abort" \
+		CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1
+.    elif defined(_INCLUDE_USES_MESON_MK)
+   MESON_ARGS+=	-Db_lto=true
+.    else
 # Overridable as a user may want to use -flto
-LTO_FLAGS?=	-flto=thin
-CFLAGS+=	${LTO_FLAGS}
-CXXFLAGS+=	${LTO_FLAGS}
-LDFLAGS+=	${LTO_FLAGS}
+   LTO_FLAGS?=	-flto=thin
+   CFLAGS+=	${LTO_FLAGS}
+   CXXFLAGS+=	${LTO_FLAGS}
+   LDFLAGS+=	${LTO_FLAGS}
+.    endif
 .  endif
 .endif