makefiles: Attempt to automatically run make depend when reading an updated makefile.

Make.rules.in

@@ -179,7 +179,7 @@ LINTS  = $(C_SRCS:.c=.ln)
 
 # 'all' target first in case the enclosing Makefile didn't define any target
 
-all: Makefile
+all:
 
 filter: dummy
 	@$(TOPSRCDIR)/tools/winapi/make_filter --make $(MAKE) all
@@ -193,12 +193,6 @@ $(RC_BINARIES): $(BIN2RES) $(RC_BINSRC)
 
 $(RC_SRCS:.rc=.res) $(RC_SRCS16:.rc=.res): $(WRC) $(RC_BINARIES) $(IDL_TLB_SRCS:.idl=.tlb)
 
-# Rules for makefile
-
-Makefile: Makefile.in $(TOPSRCDIR)/configure
-	@echo Makefile is older than $?, please rerun $(TOPSRCDIR)/configure
-	@exit 1
-
 # Rule for linting
 
 $(MODULE).ln : $(LINTS)

Makefile.in

@@ -103,10 +103,22 @@ fonts/__install__ loader/__install__ server/__install__: libs tools
 programs/__install__: libs tools include dlls/__install-lib__
 tools/__install-lib__ tools/__install-dev__: tools
 
-depend $(SUBDIRS:%=%/__depend__): $(MAKEDEP)
+RECURSE_TARGETS = \
+	$(SUBDIRS) \
+	$(SUBDIRS:%=%/__clean__) \
+	$(SUBDIRS:%=%/__depend__) \
+	$(SUBDIRS:%=%/__install-dev__) \
+	$(SUBDIRS:%=%/__install-lib__) \
+	$(SUBDIRS:%=%/__install__) \
+	$(SUBDIRS:%=%/__uninstall__) \
+	$(TESTSUBDIRS:%=%/__crosstest__) \
+	$(TESTSUBDIRS:%=%/__test__) \
+	$(TESTSUBDIRS:%=%/__testclean__)
+
+depend $(RECURSE_TARGETS): $(MAKEDEP)
 
 $(MAKEDEP):
-	@cd $(TOOLSDIR)/tools && $(MAKE) makedep
+	@cd $(TOOLSDIR)/tools && $(MAKE) makedep$(EXEEXT)
 
 # Test rules
 

configure

@@ -23765,6 +23765,11 @@ esac
 
 DEPENDENCIES="### Dependencies:
 
+.INIT: Makefile
+.BEGIN: Makefile
+Makefile: dummy
+	-\$(MAKEDEP) -C\$(SRCDIR) -S\$(TOPSRCDIR) -T\$(TOPOBJDIR) \$(EXTRAINCL) \$(DEPEND_SRCS)
+
 \$(ALL_OBJS): \$(IDL_SRCS:.idl=.h)
 \$(LEX_SRCS:.l=.yy.o): \$(LEX_SRCS:.l=.yy.c)
 \$(BISON_SRCS:.y=.tab.o): \$(BISON_SRCS:.y=.tab.c)"

configure.ac

@@ -1459,6 +1459,11 @@ dnl **** Generate output files ****
 
 AC_SUBST(DEPENDENCIES,"### Dependencies:
 
+.INIT: Makefile
+.BEGIN: Makefile
+Makefile: dummy
+	-\$(MAKEDEP) -C\$(SRCDIR) -S\$(TOPSRCDIR) -T\$(TOPOBJDIR) \$(EXTRAINCL) \$(DEPEND_SRCS)
+
 \$(ALL_OBJS): \$(IDL_SRCS:.idl=.h)
 \$(LEX_SRCS:.l=.yy.o): \$(LEX_SRCS:.l=.yy.c)
 \$(BISON_SRCS:.y=.tab.o): \$(BISON_SRCS:.y=.tab.c)")

tools/Makefile.in

@@ -95,3 +95,5 @@ uninstall::
 	-$(UPDATE_DESKTOP_DATABASE)
 
 @DEPENDENCIES@  # everything below this line is overwritten by make depend
+
+Makefile: makedep$(EXEEXT)