check build for using too much data or program space

Author: phkehl

build.mk

@@ -365,6 +365,7 @@ $(OBJDIR)/$(IMGNAME).size: $(OBJDIR)/$(IMGNAME).elf
 	$(V)$(SIZE) -Bd $(OFILES) >> $@
 	$(V)if [ "$(SIZES)" -ge 1 ]; then $(SIZE) -AC $(OBJDIR)/$(IMGNAME).elf; fi
 
+
 # .lss from .elf (extended listing)
 %.lss: %.elf
 	@echo "$(HLV)G $@$(HLO)"
@@ -382,9 +383,12 @@ $(OBJDIR)/$(IMGNAME).size: $(OBJDIR)/$(IMGNAME).elf
 
 # .hex/.srec/.bin from .elf
 OBJCOPYIMG := $(OBJCOPY) # -j .text -j .data
-%.hex: %.elf
+
+%.hex: %.elf $(FFDIR)/tools/checksize.awk
 	@echo "$(HLV)G $@$(HLO)"
 	$(V)$(OBJCOPYIMG) -O ihex $< $@
+	$(V)$(SIZE) -AC $< | $(AWK) -f $(FFDIR)/tools/checksize.awk
+
 %.srec: %.elf
 	@echo "$(HLV)G $@$(HLO)"
 	$(V)$(OBJCOPYIMG) -O srec $< $@

tools/checksize.awk

@@ -0,0 +1,12 @@
+BEGIN { error = 0; }
+/% Full/ {
+    match($$0, /^(.+):.+\(([0-9]+\.[0-9]+)% Full\)/, a);
+    if (a[2] > 100.0)
+    {
+        print("Too much " $0);
+        error++;
+    }
+}
+END {
+    exit(error ? 1 : 0);
+}