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-rw-r--r--scripts/Makefile.fwinst25
1 files changed, 23 insertions, 2 deletions
diff --git a/scripts/Makefile.fwinst b/scripts/Makefile.fwinst
index 3d2f4609578f..c972c0f54ce0 100644
--- a/scripts/Makefile.fwinst
+++ b/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