diff --git a/.hgignore b/.hgignore
--- a/.hgignore
+++ b/.hgignore
@@ -2,3 +2,9 @@ syntax: glob
 
 *\.o
 *\.d
+analysis/*
+.settings/*
+Debug/*
+build/*
+*.orig
+archive/*
diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -39,6 +39,7 @@ JTENCODE_INCLUDES = -Ilib/jtencode
 # USER_CFLAGS: user C flags (enable warnings, enable debug info)
 USER_CFLAGS = -Wall -g -ffunction-sections -fdata-sections -Os -fno-common --function-sections -fdata-sections 
 #USER_CFLAGS += -flto
+USER_CFLAGS += --specs=nano.specs
 
 # USER_LDFLAGS:  user LD flags
 USER_LDFLAGS = -fno-exceptions -ffunction-sections -fdata-sections -Wl,--gc-sections