Make building an empty static library work.
Handle the case where a static library is not built because it has no
input files (e.g. because they are conditionally included and it happens
that the computed list is empty). Previously, ar never ran because of
split-long-arguments, and anything that depended on the static library
would fail to link. Make sure that ar runs at least once.
Change-Id: If0071d7ae50c4e45fff1772dca43187af155db1f
diff --git a/core/definitions.mk b/core/definitions.mk
index c3c4884..8607f06 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1058,11 +1058,13 @@
endef
# Split long argument list into smaller groups and call the command repeatedly
+# Call the command at least once even if there are no arguments, as otherwise
+# the output file won't be created.
#
# $(1): the command without arguments
# $(2): the arguments
define split-long-arguments
-$(call _concat-if-arg2-not-empty,$(1),$(wordlist 1,500,$(2)))
+$(hide) $(1) $(wordlist 1,500,$(2))
$(call _concat-if-arg2-not-empty,$(1),$(wordlist 501,1000,$(2)))
$(call _concat-if-arg2-not-empty,$(1),$(wordlist 1001,1500,$(2)))
$(call _concat-if-arg2-not-empty,$(1),$(wordlist 1501,2000,$(2)))
