silent SDK build

Signed-off-by: Michel-FK <[email protected]>

Author: Michel-FK

Makefile

@@ -61,7 +61,7 @@ sdk: buildroot SDK/output/.config
 	@$(call MESSAGE,"Making FunKey SDK")
 	@$(BRMAKE) BR2_EXTERNAL=../SDK O=../SDK/output prepare-sdk
 	@$(call MESSAGE,"Generating SDK tarball")
-	export LC_ALL=C; \
+	@export LC_ALL=C; \
 	SDK=FunKey-sdk-$(shell cat FunKey/board/funkey/rootfs-overlay/etc/sw-versions | cut -f 2); \
 	grep -lr "$(shell pwd)/SDK/output/host" SDK/output/host | while read -r FILE ; do \
 		if file -b --mime-type "$${FILE}" | grep -q '^text/'; then \

README.md

@@ -92,7 +92,7 @@ $ cd FunKey-OS
 You may now build your FunKey with:
 
 ```bash
-$ make
+$ make sdk all
 ```
 This may take a while (~1h30), so consider getting yourself a cup, a glass or a bottle of your favorite beverage ;-)