diff --git a/[refs] b/[refs]
index 4508a43311e0..0ff11dbd2ba5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ee723cb3d419afcc8b6c7ccc0f73a34b0eb5ac7b
+refs/heads/master: 7259d936c6af216198ae6af3a25ac6c9dbdbe779
diff --git a/trunk/scripts/Makefile.fwinst b/trunk/scripts/Makefile.fwinst
index 3d2f4609578f..c972c0f54ce0 100644
--- a/trunk/scripts/Makefile.fwinst
+++ b/trunk/scripts/Makefile.fwinst
@@ -28,18 +28,39 @@ endif
 installed-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-all))
 installed-fw-dirs := $(sort $(dir $(installed-fw))) $(INSTALL_FW_PATH)/.
 
+# Workaround for make < 3.81, where .SECONDEXPANSION doesn't work.
+PHONY += $(INSTALL_FW_PATH)/$$(%) install-all-dirs
+$(INSTALL_FW_PATH)/$$(%): install-all-dirs
+	@true
+install-all-dirs: $(installed-fw-dirs)
+	@true
+
 quiet_cmd_install = INSTALL $(subst $(srctree)/,,$@)
       cmd_install = $(INSTALL) -m0644 $< $@
 
 $(installed-fw-dirs):
 	$(call cmd,mkdir)
 
-$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% | $(INSTALL_FW_PATH)/$$(dir %)/
+$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% | $(INSTALL_FW_PATH)/$$(dir %)
 	$(call cmd,install)
 
-.PHONY: __fw_install __fw_modinst FORCE
+PHONY +=  __fw_install __fw_modinst FORCE
+
+.PHONY: $(PHONY)
 
 __fw_install: $(installed-fw)
 __fw_modinst: $(mod-fw)
 
 FORCE:
+
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building using $(if_changed{,_dep}). As an optimization, we
+# don't need to read them if the target does not exist; we will rebuild
+# anyway in that case.
+
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+
+ifneq ($(cmd_files),)
+  include $(cmd_files)
+endif