1 files changed, 78 insertions, 7 deletions
diff --git a/common.mak b/common.mak
index aed11f7891..ec706480d0 100644
--- a/common.mak
+++ b/common.mak
@@ -5,6 +5,75 @@
 # first so "all" becomes default target
 all: all-yes
 
+ifndef SUBDIR
+
+ifndef V
+Q      = @
+ECHO   = printf "$(1)\t%s\n" $(2)
+BRIEF  = CC CXX AS YASM AR LD HOSTCC STRIP CP
+SILENT = DEPCC DEPAS DEPHOSTCC DEPYASM RM RANLIB
+MSG    = $@
+M      = @$(call ECHO,$(TAG),$@);
+$(foreach VAR,$(BRIEF), \
+    $(eval override $(VAR) = @$$(call ECHO,$(VAR),$$(MSG)); $($(VAR))))
+$(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
+$(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_DIR)/%=%)); $(INSTALL))
+endif
+
+ALLFFLIBS = avcodec avdevice avfilter avformat avresample avutil postproc swscale swresample
+
+# NASM requires -I path terminated with /
+IFLAGS     := -I. -I$(SRC_PATH)/
+CPPFLAGS   := $(IFLAGS) $(CPPFLAGS)
+CFLAGS     += $(ECFLAGS)
+CCFLAGS     = $(CPPFLAGS) $(CFLAGS)
+ASFLAGS    := $(CPPFLAGS) $(ASFLAGS)
+CXXFLAGS   += $(CPPFLAGS) $(CFLAGS)
+YASMFLAGS  += $(IFLAGS) -I$(SRC_PATH)/libavutil/x86/ -Pconfig.asm
+HOSTCCFLAGS = $(IFLAGS) $(HOSTCFLAGS)
+LDFLAGS    := $(ALLFFLIBS:%=-Llib%) $(LDFLAGS)
+
+define COMPILE
+       $(call $(1)DEP,$(1))
+       $($(1)) $($(1)FLAGS) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $<
+endef
+
+COMPILE_C = $(call COMPILE,CC)
+COMPILE_CXX = $(call COMPILE,CXX)
+COMPILE_S = $(call COMPILE,AS)
+
+%.o: %.c
+	$(COMPILE_C)
+
+%.o: %.cpp
+	$(COMPILE_CXX)
+
+%.s: %.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -S -o $@ $<
+
+%.o: %.S
+	$(COMPILE_S)
+
+%.ho: %.h
+	$(CC) $(CCFLAGS) -c $(CC_O) -x c $<
+
+%.ver: %.v
+	$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ > $@
+
+%.c %.h: TAG = GEN
+
+# Dummy rule to stop make trying to rebuild removed or renamed headers
+%.h:
+	@:
+
+# Disable suffix rules.  Most of the builtin rules are suffix rules,
+# so this saves some time on slow systems.
+.SUFFIXES:
+
+# Do not delete intermediate files from chains of implicit rules
+$(OBJS):
+endif
+
 include $(SRC_PATH)/arch.mak
 
 OBJS      += $(OBJS-yes)
@@ -28,7 +97,8 @@ DEP_LIBS := $(foreach NAME,$(FFLIBS),lib$(NAME)/$($(CONFIG_SHARED:yes=S)LIBNAME)
 ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)/$(ARCH)/*.h))
 SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
 SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
-checkheaders: $(filter-out $(SKIPHEADERS:.h=.ho),$(ALLHEADERS:.h=.ho))
+HEADEROBJS  := $(filter-out $(SKIPHEADERS:.h=.ho),$(ALLHEADERS:.h=.ho))
+checkheaders:  $(HEADEROBJS)
 
 alltools: $(TOOLS)
 
@@ -38,14 +108,15 @@ $(HOSTOBJS): %.o: %.c
 $(HOSTPROGS): %$(HOSTEXESUF): %.o
 	$(HOSTCC) $(HOSTLDFLAGS) -o $@ $< $(HOSTLIBS)
 
-$(OBJS):     | $(sort $(dir $(OBJS)))
-$(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
-$(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
-$(TOOLOBJS): | tools
+$(OBJS):       | $(sort $(dir $(OBJS)))
+$(HOSTOBJS):   | $(sort $(dir $(HOSTOBJS)))
+$(TESTOBJS):   | $(sort $(dir $(TESTOBJS)))
+$(HEADEROBJS): | $(sort $(dir $(HEADEROBJS)))
+$(TOOLOBJS):   | tools
 
-OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOSTOBJS) $(TESTOBJS))
+OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOSTOBJS) $(TESTOBJS) $(HEADEROBJS))
 
-CLEANSUFFIXES     = *.d *.o *~ *.ho *.map *.ver
+CLEANSUFFIXES     = *.d *.o *~ *.ho *.map *.ver *.gcno *.gcda
 DISTCLEANSUFFIXES = *.pc
 LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a