diff options
| -rw-r--r-- | third_party/rules.mk | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/third_party/rules.mk b/third_party/rules.mk index 018f7cb432..16fd1e52e3 100644 --- a/third_party/rules.mk +++ b/third_party/rules.mk @@ -17,10 +17,10 @@ CRYPTOC_DIR ?= $(realpath ../../third_party/cryptoc) # SUPPORT_UNALIGNED indicates to libcryptoc that provided data buffers # may be unaligned and please handle them safely. -cmd_libcryptoc_make = $(MAKE) -C $(CRYPTOC_DIR) \ +cmd_libcryptoc = $(MAKE) -C $(CRYPTOC_DIR) \ obj=$(realpath $(out))/cryptoc \ SUPPORT_UNALIGNED=1 -cmd_libcryptoc = $(cmd_libcryptoc_make) -q || $(cmd_libcryptoc_make) +cmd_libcryptoc_clean = $(cmd_libcryptoc) -q && echo clean ifneq ($(BOARD),host) CPPFLAGS += -I$(abspath ./builtin) @@ -28,8 +28,14 @@ endif CPPFLAGS += -I$(CRYPTOC_DIR)/include CRYPTOC_LDFLAGS := -L$(out)/cryptoc -lcryptoc -# Force the external build each time, so it can look for changed sources. +# Conditionally force the rebuilding of libcryptoc.a only if it would be +# changed. +# Note, we use ifndef to ensure the likelyhood of rebuilding is much higher. +# For example, if variable cmd_libcryptoc_clean is modified or blank, +# we will rebuild. +ifneq ($(shell $(cmd_libcryptoc_clean)),clean) .PHONY: $(out)/cryptoc/libcryptoc.a +endif $(out)/cryptoc/libcryptoc.a: +$(call quiet,libcryptoc,MAKE ) |