ssb_sprom: Add sparse support, Add quiet build, Add autodependencies

Signed-off-by: Michael Buesch <mb@bu3sch.de>

diff --git a/ssb_sprom/Makefile b/ssb_sprom/Makefile
index eb0eac0a35f3f8c00fce39e90c98f41f59c42c84..01efc0ee8d0df940a0de9f92b132be70966ccb1c 100644 (file)
--- a/ssb_sprom/Makefile
+++ b/ssb_sprom/Makefile
@@ -1,22 +1,55 @@
-CC = cc
-PREFIX = /usr/local
-CFLAGS = -std=c99 -O2 -fomit-frame-pointer -Wall -D_BSD_SOURCE
-LDFLAGS =
+# The toolchain definitions
+CC             = cc
+SPARSE         = sparse
 
+V              = @             # Verbose build:  make V=1
+C              = 0             # Sparsechecker build:  make C=1
+Q              = $(V:1=)
+QUIET_CC       = $(Q:@=@echo '     CC       '$@;)$(CC)
+QUIET_DEPEND   = $(Q:@=@echo '     DEPEND   '$@;)$(CC)
+ifeq ($(C),1)
+QUIET_SPARSE   = $(Q:@=@echo '     SPARSE   '$@;)$(SPARSE)
+else
+QUIET_SPARSE   = @/bin/true
+endif
 
-OBJECTS = ssb_sprom.o utils.o
+PREFIX         ?= /usr/local
+CFLAGS         += -std=c99 -O2 -fomit-frame-pointer -Wall -D_BSD_SOURCE
+LDFLAGS                ?=
 
-all: ssb_sprom
+SRCS           = ssb_sprom.c utils.c
+BIN            = ssb_sprom
 
-ssb_sprom: $(OBJECTS)
-       $(CC) $(CFLAGS) -o ssb-sprom $(OBJECTS) $(LDFLAGS)
+.SUFFIXES:
+.PHONY: all install clean distclean
+.DEFAULT_GOAL := all
+
+DEPS = $(sort $(patsubst %.c,dep/%.d,$(1)))
+OBJS = $(sort $(patsubst %.c,obj/%.o,$(1)))
+
+# Generate dependencies
+$(call DEPS,$(SRCS)): dep/%.d: %.c 
+       @mkdir -p $(dir $@)
+       $(QUIET_DEPEND) -o $@.tmp -MM -MG -MT "$@ $(patsubst dep/%.d,obj/%.o,$@)" $(CFLAGS) $< && mv -f $@.tmp $@
+
+-include $(call DEPS,$(SRCS))
+
+# Generate object files
+$(call OBJS,$(SRCS)): obj/%.o:
+       @mkdir -p $(dir $@)
+       $(QUIET_SPARSE) $(SPARSEFLAGS) $<
+       $(QUIET_CC) -o $@ -c $(CFLAGS) $<
+
+all: $(BIN)
+
+$(BIN): $(call OBJS,$(SRCS))
+       $(QUIET_CC) $(CFLAGS) -o $(BIN) $(call OBJS,$(SRCS)) $(LDFLAGS)
 
 install: all
-       -install -o 0 -g 0 -m 755 ssb-sprom $(PREFIX)/bin/
+       install -o 0 -g 0 -m 755 $(BIN) $(PREFIX)/bin/
 
 clean:
-       -rm -f *~ *.o *.orig *.rej ssb-sprom
+       -rm -Rf obj dep *~ *.orig *.rej
 
-# dependencies
-ssb_sprom.o: ssb_sprom.h utils.h
-utils.o: utils.h ssb_sprom.h
+distclean: clean
+       -rm -f $(BIN)