Make the build process informative again for 'make' 3.80 and earlier. Those 'make' versions are back to lower build speed (same as before my Makefile tuning).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11376 a1c6a512-1295-4272-9138-f99709370657

firmware/decompressor/Makefile

@@ -10,7 +10,7 @@
 ifndef V
 SILENT=@
 endif
-PRINTS=$(info $(1))$(SILENT)
+PRINTS=$(SILENT)$(call info,$(1))
 
 LDS := link.lds
 LINKFILE = $(OBJDIR)/linkage.lds

tools/configure

@@ -1421,6 +1421,12 @@ else
 VERBOSEOPT=-v
 endif
 
+# old 'make' versions don't have the built-in 'info' function
+info=old\$(warning Consider upgrading to GNU make 3.81+ for optimum build performance.)
+ifeq (\$(call info),old)
+export info=echo "\$\$(1)";
+endif
+
 export ROOTDIR=@ROOTDIR@
 export FIRMDIR=@FIRMDIR@
 export APPSDIR=@APPSDIR@

tools/make.inc

@@ -3,7 +3,7 @@
 ifndef V
 SILENT=@
 endif
-PRINTS=$(info $(1))$(SILENT)
+PRINTS=$(SILENT)$(call info,$(1))
 
 $(OBJDIR)/%.o: %.c
 	$(SILENT)mkdir -p $(dir $@)

tools/makebmp.inc

@@ -5,7 +5,7 @@ dep: $(DEPFILE)
 ifndef V
 SILENT=@
 endif
-PRINTS=$(info $(1))$(SILENT)
+PRINTS=$(SILENT)$(call info,$(1))
 
 $(OBJDIR)/%.c: %.bmp
 	$(SILENT)mkdir -p $(dir $@)