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-rw-r--r--functions.mk7
1 files changed, 7 insertions, 0 deletions
diff --git a/functions.mk b/functions.mk
new file mode 100644
index 000000000000..51f6457016e7
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+++ b/functions.mk
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+# Utility function for recursively finding files, e.g.
+# ‘$(call rwildcard, path/to/dir, *.c *.h)’.
+rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
+
+# Given a file name, produce the corresponding dependency file
+# (e.g. ‘foo/bar.o’ becomes ‘foo/.bar.o.dep’).
+filename-to-dep = $(dir $1).$(notdir $1).dep