From d7c51ed1414b25dac4175d209922b2fe99f84c1b Mon Sep 17 00:00:00 2001
From: psychon <psychon@726aef4b-f618-498e-8847-2d620e286838>
Date: Wed, 16 Jan 2008 20:56:07 +0000
Subject: [PATCH] And again some makefile stuff (this time it's some new depend
 code)

We are back to the behaviour of some old version of the Makefile

If you want to compile ZNC only once, just use make.

If you want the Makefile do to dependency tracking and that fancy stuff,
run make depend which creates the .depend and modules/.depend dirs.

From then on some dependency files get written when you compile something.

(The way we did it before now was bad, because all the .cpp files depended on
 the .depend dir which got its mtime updated regulary)


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@922 726aef4b-f618-498e-8847-2d620e286838
---
 Makefile.in         | 17 ++++++++++++++---
 configure           |  8 +-------
 configure.in        |  4 ----
 modules/Makefile.in | 12 ++++++++++--
 4 files changed, 25 insertions(+), 16 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 83667438..81fd6691 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -13,7 +13,6 @@ LDFLAGS  := @LDFLAGS@
 INCLUDES := @INCLUDES@
 LIBS     := @LIBS@
 prefix   := @prefix@
-DEPEND   := yes
 
 SRCS := String.cpp Csocket.cpp main.cpp znc.cpp User.cpp IRCSock.cpp Client.cpp DCCBounce.cpp \
 	DCCSock.cpp Chan.cpp Nick.cpp Server.cpp Modules.cpp MD5.cpp Buffer.cpp Utils.cpp \
@@ -23,12 +22,24 @@ CLEAN := znc znc-static *.o core core.*
 DISTCLEAN := Makefile config.log config.status znc-config .depend \
 	modules/.depend modules/Makefile
 
+DEPEND   := $(wildcard .depend)
+ifeq ($(DEPEND), )
+DEPEND   := no
+else
+DEPEND   := yes
+endif
+
 .PHONY: all modules clean distclean install
 
-all: @DEPEND@ znc @MODTARGET@
+all: znc @MODTARGET@
 
 .depend:
 	@mkdir -p .depend
+	@if test -n "@MODTARGET@"; then \
+		$(MAKE) -C modules .depend ; \
+	fi
+
+depend: .depend
 
 znc: $(OBJS)
 	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
@@ -53,7 +64,7 @@ distclean: clean
 	rm -rf $(DISTCLEAN)
 
 ifeq ($(DEPEND), yes)
-.cpp.o: .depend
+.cpp.o:
 	$(CXX) $(CXXFLAGS) $(INCLUDES) -c -o $@ $< -MMD -MF .depend/$<.dep
 else
 .cpp.o:
diff --git a/configure b/configure
index 35fe825f..6955d9d0 100755
--- a/configure
+++ b/configure
@@ -633,7 +633,6 @@ CFLAGS
 ac_ct_CC
 MODFLAGS
 INCLUDES
-DEPEND
 MODULES
 MODTARGET
 VERSION
@@ -2414,7 +2413,6 @@ case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
 CXXFLAGS="$SAVED_CXXFLAGS -D_GNU_SOURCE -D_FORTIFY_SOURCE=2"
 INCLUDES=""
 LIBS=""
-DEPEND=""
 
 appendLib () {
 	if test "$LIBS" != ""; then
@@ -2525,8 +2523,6 @@ fi
 
 if test "x$GXX" = "xyes"; then
 	appendCXX -Wall -W -Wno-unused -Woverloaded-virtual
-	# enable g++ dependency tracking
-	DEPEND=".depend"
 fi
 
 ac_ext=c
@@ -3929,7 +3925,6 @@ VERSION=0.053
 
 
 
-
 ac_config_files="$ac_config_files Makefile"
 
 ac_config_files="$ac_config_files znc-config"
@@ -4625,7 +4620,6 @@ CFLAGS!$CFLAGS$ac_delim
 ac_ct_CC!$ac_ct_CC$ac_delim
 MODFLAGS!$MODFLAGS$ac_delim
 INCLUDES!$INCLUDES$ac_delim
-DEPEND!$DEPEND$ac_delim
 MODULES!$MODULES$ac_delim
 MODTARGET!$MODTARGET$ac_delim
 VERSION!$VERSION$ac_delim
@@ -4638,7 +4632,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 68; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 67; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
diff --git a/configure.in b/configure.in
index f0835890..4f375a00 100644
--- a/configure.in
+++ b/configure.in
@@ -7,7 +7,6 @@ AC_CANONICAL_HOST
 CXXFLAGS="$SAVED_CXXFLAGS -D_GNU_SOURCE -D_FORTIFY_SOURCE=2"
 INCLUDES=""
 LIBS=""
-DEPEND=""
 
 appendLib () {
 	if test "$LIBS" != ""; then
@@ -100,8 +99,6 @@ fi
 
 if test "x$GXX" = "xyes"; then
 	appendCXX -Wall -W -Wno-unused -Woverloaded-virtual
-	# enable g++ dependency tracking
-	DEPEND=".depend"
 fi
 
 AC_CHECK_LIB( gnugetopt, getopt_long,)
@@ -193,7 +190,6 @@ AC_SUBST([CXXFLAGS])
 AC_SUBST([MODFLAGS])
 AC_SUBST([LDFLAGS])
 AC_SUBST([INCLUDES])
-AC_SUBST([DEPEND])
 AC_SUBST([LIBS])
 AC_SUBST([MODULES])
 AC_SUBST([MODTARGET])
diff --git a/modules/Makefile.in b/modules/Makefile.in
index 8441c066..e5a98f90 100644
--- a/modules/Makefile.in
+++ b/modules/Makefile.in
@@ -15,7 +15,6 @@ LIBS     := @LIBS@
 PERL     := @PERL@
 MODDIR   := @MODDIR@
 DATADIR  := @DATADIR@
-DEPEND   := yes
 
 ifeq "@NOSSL@" "1" 
 FILES    := $(foreach file, $(wildcard *.cpp), \
@@ -46,6 +45,13 @@ TARGETS  := $(addsuffix .so, $(FILES))
 
 CLEAN    := *.so
 
+DEPEND   := $(wildcard .depend)
+ifeq ($(DEPEND), )
+DEPEND   := no
+else
+DEPEND   := yes
+endif
+
 .PHONY: all clean install modperl_install
 
 all: $(TARGETS)
@@ -53,6 +59,8 @@ all: $(TARGETS)
 .depend:
 	@mkdir -p .depend
 
+depend: .depend
+
 install: all create_install_dir install_metadirs $(PERLHOOK)
 	install -m 0755 $(TARGETS) $(DESTDIR)$(MODDIR)
 
@@ -72,7 +80,7 @@ clean:
 	rm -rf $(CLEAN)
 
 ifeq ($(DEPEND), yes)
-%.so: %.cpp .depend
+%.so: %.cpp
 	$(CXX) $(CXXFLAGS) $(INCLUDES) $(LDFLAGS) $($(basename $<)FLAGS) -shared -o $@ $< -MMD -MF .depend/$<.dep
 else
 %.so: %.cpp