Clean up Makefiles

Remove unused variables. Instead of overriding non-standard variables
such as ARCH and PROF, use standard variables CFLAGS and LDFLAGS to
override Makefile settings. Move dependencies generated by `make dep` to
a separate file.

deps/Makefile

@@ -1,17 +1,6 @@
 # Redis dependency Makefile
 
-UNAME_S:=$(shell sh -c 'uname -s 2> /dev/null || echo not')
-
-LUA_CFLAGS=-O2 -Wall $(ARCH)
-ifeq ($(UNAME_S),SunOS)
-  # Make isinf() available
-  LUA_CFLAGS+= -D__C99FEATURES__=1
-endif
-
-JEMALLOC_CFLAGS=
-ifeq ($(ARCH),-m32)
-  JEMALLOC_CFLAGS+=CFLAGS="-std=gnu99 -Wall -pipe -g3 -fvisibility=hidden -O3 -funroll-loops -m32"
-endif
+uname_S:= $(shell sh -c 'uname -s 2>/dev/null || echo not')
 
 CCCOLOR="\033[34m"
 LINKCOLOR="\033[34;1m"
@@ -23,37 +12,67 @@ ENDCOLOR="\033[0m"
 default:
 	@echo "Explicit target required"
 
-# Clean everything when ARCH is different
-ifneq ($(shell sh -c '[ -f .make-arch ] && cat .make-arch'), $(ARCH))
-.make-arch: distclean
-else
-.make-arch:
+.PHONY: default
+
+# Prerequisites target
+.make-prerequisites:
+	@touch $@
+
+# Clean everything when CFLAGS is different
+ifneq ($(shell sh -c '[ -f .make-cflags ] && cat .make-cflags || echo none'), $(CFLAGS))
+.make-cflags: distclean
+	-(echo "$(CFLAGS)" > .make-cflags)
+.make-prerequisites: .make-cflags
 endif
 
-.make-arch:
-	-(echo $(ARCH) > .make-arch)
+# Clean everything when LDFLAGS is different
+ifneq ($(shell sh -c '[ -f .make-ldflags ] && cat .make-ldflags || echo none'), $(LDFLAGS))
+.make-ldflags: distclean
+	-(echo "$(LDFLAGS)" > .make-ldflags)
+.make-prerequisites: .make-ldflags
+endif
 
 distclean:
 	-(cd hiredis && $(MAKE) clean) > /dev/null || true
 	-(cd linenoise && $(MAKE) clean) > /dev/null || true
 	-(cd lua && $(MAKE) clean) > /dev/null || true
 	-(cd jemalloc && [ -f Makefile ] && $(MAKE) distclean) > /dev/null || true
-	-(rm -f .make-arch)
+	-(rm -f .make-*)
+
+.PHONY: distclean
+
+hiredis: .make-prerequisites
+	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR)
+	cd hiredis && $(MAKE) static
+
+.PHONY: hiredis
+
+linenoise: .make-prerequisites
+	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR)
+	cd linenoise && $(MAKE)
+
+.PHONY: linenoise
+
+ifeq ($(uname_S),SunOS)
+  # Make isinf() available
+  LUA_CFLAGS= -D__C99FEATURES__=1
+endif
+
+LUA_CFLAGS+= -O2 -Wall -DLUA_ANSI $(CFLAGS)
+LUA_LDFLAGS+= $(LDFLAGS)
 
-hiredis: .make-arch
-	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)hiredis$(ENDCOLOR)
-	cd hiredis && $(MAKE) static ARCH="$(ARCH)"
+lua: .make-prerequisites
+	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR)
+	cd lua/src && $(MAKE) all CFLAGS="$(LUA_CFLAGS)" MYLDFLAGS="$(LUA_LDFLAGS)"
 
-linenoise: .make-arch
-	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)linenoise$(ENDCOLOR)
-	cd linenoise && $(MAKE) ARCH="$(ARCH)"
+.PHONY: lua
 
-lua: .make-arch
-	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)lua$(ENDCOLOR)
-	cd lua && $(MAKE) CFLAGS="$(LUA_CFLAGS)" MYLDFLAGS="$(ARCH)" ansi
+JEMALLOC_CFLAGS= -std=gnu99 -Wall -pipe -g3 -O3 -funroll-loops $(CFLAGS)
+JEMALLOC_LDFLAGS= $(LDFLAGS)
 
-jemalloc: .make-arch
-	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)jemalloc$(ENDCOLOR)
-	cd jemalloc && ./configure $(JEMALLOC_CFLAGS) --with-jemalloc-prefix=je_ --enable-cc-silence && $(MAKE) lib/libjemalloc.a
+jemalloc: .make-prerequisites
+	@printf '%b %b\n' $(MAKECOLOR)MAKE$(ENDCOLOR) $(BINCOLOR)$@$(ENDCOLOR)
+	cd jemalloc && ./configure --with-jemalloc-prefix=je_ --enable-cc-silence CFLAGS="$(JEMALLOC_CFLAGS)" LDFLAGS="$(JEMALLOC_LDFLAGS)"
+	cd jemalloc && $(MAKE) lib/libjemalloc.a
 
-.PHONY: default conditional_clean hiredis linenoise lua jemalloc
+.PHONY: jemalloc

deps/linenoise/Makefile

@@ -1,10 +1,21 @@
-linenoise_example: linenoise.h linenoise.c
+STD=
+WARN= -Wall
+OPT= -Os
+
+R_CFLAGS= $(STD) $(WARN) $(OPT) $(DEBUG) $(CFLAGS)
+R_LDFLAGS= $(LDFLAGS)
+DEBUG= -g
+
+R_CC=$(CC) $(R_CFLAGS)
+R_LD=$(CC) $(R_LDFLAGS)
+
+linenoise.o: linenoise.h linenoise.c
 
 linenoise_example: linenoise.o example.o
-	$(CC) $(ARCH) -Wall -W -Os -g -o linenoise_example linenoise.o example.o
+	$(R_LD) -o $@ $^
 
 .c.o:
-	$(CC) $(ARCH) -c -Wall -W -Os -g $<
+	$(R_CC) -c $<
 
 clean:
 	rm -f linenoise_example *.o