Makefile enhancements

- Speedup make by use of ":=" instead of "=".
- Build "*.po" files only if a source file has been changed.
- Make some targets PHONY.
- Change subdir handling.
- Build "*.po" and "*.mo" files only if it is required.
- Install "*.mo" files and plugin "*.so" file only if they have been
  changed.

1 files changed, 17 insertions, 15 deletions

diff --git a/pages/Makefile b/pages/Makefile
index 07fd031..1e56731 100644
--- a/pages/Makefile
+++ b/pages/Makefile
@@ -1,21 +1,23 @@
 ### The official name of this plugin.
-PLUGIN = live
+PLUGIN := live
 
 ### Additional options to silence TNTNET warnings
-TNTFLAGS   ?= -Wno-overloaded-virtual -Wno-unused-variable
+TNTFLAGS ?= -Wno-overloaded-virtual -Wno-unused-variable
 
 ### Includes and Defines (add further entries here):
 INCLUDES += -I$(VDRDIR)/include -I..
 
 ### The object files (add further files here):
-OBJS	= menu.o recordings.o schedule.o multischedule.o screenshot.o   \
-          timers.o whats_on.o switch_channel.o keypress.o remote.o	\
-          channels_widget.o edit_timer.o error.o pageelems.o tooltip.o	\
-          vlc.o searchtimers.o edit_searchtimer.o searchresults.o	\
-          searchepg.o login.o ibox.o xmlresponse.o play_recording.o	\
-          pause_recording.o stop_recording.o ffw_recording.o		\
-          rwd_recording.o setup.o content.o epginfo.o timerconflicts.o  \
-          recstream.o users.o edit_user.o edit_recording.o
+OBJS := menu.o recordings.o schedule.o multischedule.o screenshot.o   \
+        timers.o whats_on.o switch_channel.o keypress.o remote.o	\
+        channels_widget.o edit_timer.o error.o pageelems.o tooltip.o	\
+        vlc.o searchtimers.o edit_searchtimer.o searchresults.o	\
+        searchepg.o login.o ibox.o xmlresponse.o play_recording.o	\
+        pause_recording.o stop_recording.o ffw_recording.o		\
+        rwd_recording.o setup.o content.o epginfo.o timerconflicts.o  \
+        recstream.o users.o edit_user.o edit_recording.o
+SRCS := $(patsubst %.o,%.cpp,$(OBJS))
+ESRCS := $(patsubst %.o,%.ecpp,$(OBJS))
 
 ### The main target:
 all: libpages.a
@@ -29,10 +31,10 @@ all: libpages.a
 	$(ECPPC) $(ECPPFLAGS) $(ECPPFLAGS_CPP) $<
 
 ### Dependencies:
-MAKEDEP = $(CXX) -MM -MG
-DEPFILE = .dependencies
-$(DEPFILE): Makefile $(OBJS:%.o=%.cpp) $(OBJS:%.o=%.ecpp)
-	@$(MAKEDEP) $(DEFINES) $(PLUGINFEATURES) $(INCLUDES) $(OBJS:%.o=%.cpp) > $@
+MAKEDEP := $(CXX) -MM -MG
+DEPFILE := .dependencies
+$(DEPFILE): Makefile $(SRCS) $(ESRCS)
+	@$(MAKEDEP) $(DEFINES) $(PLUGINFEATURES) $(INCLUDES) $(SRCS) > $@
 
 ifneq ($(MAKECMDGOALS),clean)
 -include $(DEPFILE)
@@ -43,7 +45,7 @@ libpages.a: $(OBJS)
 	$(AR) r $@ $^
 
 clean:
-	@rm -f *~ *.o core* libpages.a $(OBJS:%.o=%.cpp) $(DEPFILE)
+	@rm -f *~ *.o core* libpages.a $(SRCS) $(DEPFILE)
 
 dist: clean
 	@echo "Nothing to do for distribution here ..."