Fix compilation issue on macOS

Author: wvallet-ledger

Makefile.rules

@@ -40,11 +40,7 @@ endif
 endif
 endif
 
-define uniq =
-  $(eval seen :=)
-  $(foreach _,$1,$(if $(filter $_,${seen}),,$(eval seen += $_)))
-  ${seen}
-endef
+uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))
 
 define check_duplicate =
   $(eval LIST := $(sort $(foreach file_h, $(notdir $1), $(notdir $(shell find $2 -name $(file_h))))))

Makefile.standard_app

@@ -164,7 +164,7 @@ endif
 
 ifneq ($(DISABLE_STANDARD_WEBUSB), 1)
     APP_WEBUSB_URL ?= ""
-    WEBUSB_URL_SIZE_B = $(shell echo -n $(APP_WEBUSB_URL) | wc -c)
+    WEBUSB_URL_SIZE_B = $(shell echo -n $(APP_WEBUSB_URL) | wc -c | xargs)
     WEBUSB_URL=$(shell echo -n $(APP_WEBUSB_URL) | sed -e "s/./\\\'\0\\\',/g")
     DEFINES += HAVE_WEBUSB WEBUSB_URL_SIZE_B=$(WEBUSB_URL_SIZE_B) WEBUSB_URL=$(WEBUSB_URL)
 endif