Added Makefile.in change detection (and auto-rebuild) capabilities

- If a Makefile.in is changed, ./config.status (or ./configure in case
  it's not available) will be automatically run to update the Makefiles.
- Special thanks to Yommy for the idea.

Signed-off-by: Haru <haru@dotalux.com>

10 files changed, 78 insertions, 32 deletions

diff --git a/3rdparty/libconfig/Makefile.in b/3rdparty/libconfig/Makefile.in
index d6714e50e..048a1b3b7 100644
--- a/3rdparty/libconfig/Makefile.in
+++ b/3rdparty/libconfig/Makefile.in
@@ -24,6 +24,9 @@ help:
 
 #####################################################################
 
-%.o: %.c $(LIBCONFIG_H)
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. 3rdparty/libconfig/Makefile
+
+%.o: %.c $(LIBCONFIG_H) Makefile
 	@echo "	CC	$<"
 	@$(CC) @CFLAGS@ @DEFS@ @CPPFLAGS@ -c $(OUTPUT_OPTION) $<
diff --git a/3rdparty/mt19937ar/Makefile.in b/3rdparty/mt19937ar/Makefile.in
index 7891bbd2d..c48848c8d 100644
--- a/3rdparty/mt19937ar/Makefile.in
+++ b/3rdparty/mt19937ar/Makefile.in
@@ -24,6 +24,10 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. 3rdparty/mt19937ar/Makefile
+
+%.o: %.c $(LIBCONFIG_H) Makefile
 %.o: %.c $(MT19937AR_H)
 	@echo "	CC	$<"
 	@$(CC) @CFLAGS@ @CPPFLAGS@ -c $(OUTPUT_OPTION) $<
diff --git a/Makefile.in b/Makefile.in
index d78aa631d..7dfb138f9 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -27,6 +27,10 @@ else
 	PLUGIN_DEPENDS=no_plugins
 endif
 
+MF_TARGETS = Makefile $(addsuffix /Makefile, src/common 3rdparty/mt19937ar \
+             3rdparty/libconfig src/char src/login src/map src/plugins \
+             src/tool src/test)
+
 CC = @CC@
 export CC
 
@@ -41,56 +45,73 @@ export CC
 	plugins \
 	import \
 	test \
-	clean help
+	clean \
+	help
 
 all: $(ALL_DEPENDS)
 
 sql: $(SQL_DEPENDS)
 
-common_sql: $(COMMON_SQL_DEPENDS)
+$(MF_TARGETS): %: %.in
+	@echo "	CONFIGURE"
+	@if [ -x config.status ]; then \
+		echo "Reconfiguring with options: $$(./config.status --config)"; \
+		./config.status; \
+	else \
+		echo "Unable to find a previous config.status.  ./configure will be re-run with the default options."; \
+		echo "If you want to use custom options, please press CTRL-C and run ./configure yourself"; \
+		for i in 1 2 3 4 5 6 7 8 9 10; do \
+			printf "\a. "; \
+			sleep 1; \
+		done; \
+		echo ""; \
+		./configure; \
+	fi;
+
+common_sql: $(COMMON_SQL_DEPENDS) src/common/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/common sql
 
-mt19937ar:
+mt19937ar: 3rdparty/mt19937ar/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C 3rdparty/mt19937ar
 
-libconfig:
+libconfig: 3rdparty/libconfig/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C 3rdparty/libconfig
 
-login_sql: $(LOGIN_SQL_DEPENDS)
+login_sql: $(LOGIN_SQL_DEPENDS) src/login/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/login sql
 
-char_sql: $(CHAR_SQL_DEPENDS)
+char_sql: $(CHAR_SQL_DEPENDS) src/char/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/char
 
-map_sql: $(MAP_SQL_DEPENDS)
+map_sql: $(MAP_SQL_DEPENDS) src/map/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/map sql
 
-tools: $(TOOLS_DEPENDS)
+tools: $(TOOLS_DEPENDS) src/tool/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/tool
 
-test:
+test: src/test/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/test
 
-plugins: $(PLUGIN_DEPENDS)
+plugins: $(PLUGIN_DEPENDS) src/plugins/Makefile
 	@echo "	MAKE	$@"
 	@$(MAKE) -C src/plugins
 
-import:
+import: Makefile
 	@# 1) create conf/import folder
 	@# 2) add missing files
 	@echo "building conf/import folder..."
 	@if test ! -d conf/import ; then mkdir conf/import ; fi
 	@for f in $$(ls conf/import-tmpl) ; do if test ! -e conf/import/$$f ; then cp conf/import-tmpl/$$f conf/import ; fi ; done
 
-clean:
+clean: $(MF_TARGETS)
 	@$(MAKE) -C src/common $@
 	@$(MAKE) -C 3rdparty/mt19937ar $@
 	@$(MAKE) -C 3rdparty/libconfig $@
@@ -102,12 +123,9 @@ clean:
 	@$(MAKE) -C src/test $@
 
 distclean: clean
-	@-rm -f Makefile src/common/Makefile 3rdparty/mt19937ar/Makefile \
-		3rdparty/libconfig/Makefile src/char/Makefile src/login/Makefile \
-		src/map/Makefile src/plugins/Makefile src/tool/Makefile \
-		src/test/Makefile
+	@-rm -f $(MF_TARGETS) config.status config.log
 
-help:
+help: Makefile
 	@echo "most common targets are 'all' 'sql' 'clean' 'plugins' 'help'"
 	@echo "possible targets are:"
 	@echo "'common_sql'  - builds object files used in SQL servers"
diff --git a/src/char/Makefile.in b/src/char/Makefile.in
index b2cee3f88..e22d3f5a5 100644
--- a/src/char/Makefile.in
+++ b/src/char/Makefile.in
@@ -57,6 +57,9 @@ needs_mysql:
 	@echo "MySQL not found or disabled by the configure script"
 	@exit 1
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/char/Makefile
+
 # object directories
 
 obj_sql:
@@ -65,7 +68,7 @@ obj_sql:
 
 # executables
 
-char-server: $(CHAR_SERVER_SQL_DEPENDS)
+char-server: $(CHAR_SERVER_SQL_DEPENDS) Makefile
 	@echo "	LD	$@"
 	@$(CC) @LDFLAGS@ -o ../../char-server@EXEEXT@ $(CHAR_OBJ) ../common/obj_sql/common_sql.a ../common/obj_all/common.a $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) @LIBS@ @MYSQL_LIBS@
 
diff --git a/src/common/Makefile.in b/src/common/Makefile.in
index 00d63dd5e..78f9cd0d1 100644
--- a/src/common/Makefile.in
+++ b/src/common/Makefile.in
@@ -59,6 +59,9 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/common/Makefile
+
 needs_mysql:
 	@echo "MySQL not found or disabled by the configure script"
 	@exit 1
@@ -73,23 +76,23 @@ obj_sql:
 	@echo "	MKDIR	obj_sql"
 	@-mkdir obj_sql
 
-obj_all/common.a: $(COMMON_OBJ)
+obj_all/common.a: $(COMMON_OBJ) Makefile
 	@echo "	AR	$@"
 	@@AR@ rcs obj_all/common.a $(COMMON_OBJ)
 
-obj_all/common_mini.a: $(COMMON_MINI_OBJ)
+obj_all/common_mini.a: $(COMMON_MINI_OBJ) Makefile
 	@echo "	AR	$@"
 	@@AR@ rcs obj_all/common_mini.a $(COMMON_MINI_OBJ)
 
-obj_sql/common_sql.a: $(COMMON_SQL_OBJ)
+obj_sql/common_sql.a: $(COMMON_SQL_OBJ) Makefile
 	@echo "	AR	$@"
 	@@AR@ rcs obj_sql/common_sql.a $(COMMON_SQL_OBJ)
 
-common: $(COMMON_OBJ) $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) obj_all/common.a
+common: $(COMMON_OBJ) $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) obj_all/common.a Makefile
 
-common_mini: $(COMMON_MINI_OBJ) $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) obj_all/common_mini.a
+common_mini: $(COMMON_MINI_OBJ) $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) obj_all/common_mini.a Makefile
 
-common_sql: $(COMMON_SQL_OBJ) obj_sql/common_sql.a
+common_sql: $(COMMON_SQL_OBJ) obj_sql/common_sql.a Makefile
 
 obj_all/%.o: %.c $(COMMON_H) $(CONFIG_H) $(MT19937AR_H) $(LIBCONFIG_H) | obj_all
 	@echo "	CC	$<"
diff --git a/src/login/Makefile.in b/src/login/Makefile.in
index 125f4fb7a..681eb5e6f 100644
--- a/src/login/Makefile.in
+++ b/src/login/Makefile.in
@@ -50,6 +50,9 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/login/Makefile
+
 needs_mysql:
 	@echo "MySQL not found or disabled by the configure script"
 	@exit 1
@@ -62,7 +65,7 @@ obj_sql:
 
 # executables
 
-login-server: $(LOGIN_SERVER_SQL_DEPENDS)
+login-server: $(LOGIN_SERVER_SQL_DEPENDS) Makefile
 	@echo "	LD	$@"
 	@$(CC) @LDFLAGS@ -o ../../login-server@EXEEXT@ $(LOGIN_OBJ) ../common/obj_sql/common_sql.a ../common/obj_all/common.a $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) @LIBS@ @MYSQL_LIBS@
 
diff --git a/src/map/Makefile.in b/src/map/Makefile.in
index ed1b9a79d..f7e178667 100644
--- a/src/map/Makefile.in
+++ b/src/map/Makefile.in
@@ -66,6 +66,9 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/map/Makefile
+
 needs_mysql:
 	@echo "MySQL not found or disabled by the configure script"
 	@exit 1
@@ -78,7 +81,7 @@ obj_sql:
 
 # executables
 
-map-server: $(MAP_SERVER_SQL_DEPENDS)
+map-server: $(MAP_SERVER_SQL_DEPENDS) Makefile
 	@echo "	LD	$@"
 	@$(CC) @LDFLAGS@ -o ../../map-server@EXEEXT@ $(MAP_OBJ) ../common/obj_sql/common_sql.a ../common/obj_all/common.a $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) @LIBS@ @PCRE_LIBS@ @MYSQL_LIBS@
 
diff --git a/src/plugins/Makefile.in b/src/plugins/Makefile.in
index 5ed421abf..ff7d5b2e2 100644
--- a/src/plugins/Makefile.in
+++ b/src/plugins/Makefile.in
@@ -11,7 +11,7 @@ export CC
 #####################################################################
 .PHONY: all $(PLUGINS) sample db2sql clean help
 
-all: $(PLUGINS)
+all: $(PLUGINS) Makefile
 
 sample: sample@DLLEXT@
 
@@ -28,6 +28,9 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/plugins/Makefile
+
 %@DLLEXT@: %.c $(COMMON_H)
 	@echo "	CC	$<"
 	@$(CC) @DEFS@ @CFLAGS@ @CPPFLAGS@ @LDFLAGS@ @SOFLAGS@ -o ../../plugins/$@ $<
diff --git a/src/test/Makefile.in b/src/test/Makefile.in
index f17c43202..cb99e7004 100644
--- a/src/test/Makefile.in
+++ b/src/test/Makefile.in
@@ -26,7 +26,7 @@ export CC
 #####################################################################
 .PHONY: all test_spinlock
 
-all: test_spinlock
+all: test_spinlock Makefile
 
 clean:
 	@echo "	CLEAN	test"
@@ -34,6 +34,9 @@ clean:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/test/Makefile
+
 # object directories
 
 obj:
@@ -42,7 +45,7 @@ obj:
 	
 #executables
 
-test_spinlock: $(TEST_SPINLOCK_DEPENDS)
+test_spinlock: $(TEST_SPINLOCK_DEPENDS) Makefile
 	@echo "	LD	$@"
 	@$(CC) @LDFLAGS@ -o ../../test_spinlock@EXEEXT@ $(TEST_SPINLOCK_OBJ) ../common/obj_sql/common_sql.a ../common/obj_all/common.a $(MT19937AR_OBJ) $(LIBCONFIG_OBJ) @LIBS@ @MYSQL_LIBS@
 
diff --git a/src/tool/Makefile.in b/src/tool/Makefile.in
index 4fa527ffc..4f9dc7590 100644
--- a/src/tool/Makefile.in
+++ b/src/tool/Makefile.in
@@ -24,9 +24,9 @@ export CC
 #####################################################################
 .PHONY: all mapcache clean help
 
-all: mapcache
+all: mapcache Makefile
 
-mapcache: $(MAPCACHE_OBJ) $(COMMON_OBJ) $(LIBCONFIG_OBJ)
+mapcache: $(MAPCACHE_OBJ) $(COMMON_OBJ) $(LIBCONFIG_OBJ) Makefile
 	@echo "	LD	$@"
 	@$(CC) @LDFLAGS@ $(LIBCONFIG_INCLUDE) -o ../../mapcache@EXEEXT@ $(MAPCACHE_OBJ) $(COMMON_OBJ) $(LIBCONFIG_OBJ) @LIBS@
 
@@ -43,6 +43,9 @@ help:
 
 #####################################################################
 
+Makefile: Makefile.in
+	@$(MAKE) -C ../.. src/tool/Makefile
+
 obj_all:
 	@echo "	MKDIR	obj_all"
 	@-mkdir obj_all