#
 # common bits used by all libraries
 #
 

 all: # make "all" default target

 ifndef SUBDIR

 vpath %.c $(SRC_DIR)
 vpath %.h $(SRC_DIR)
 vpath %.S $(SRC_DIR)

 vpath %.asm $(SRC_DIR)

 vpath %.v   $(SRC_DIR)

 ifeq ($(SRC_DIR),$(SRC_PATH_BARE))
 BUILD_ROOT_REL = .
 else
 BUILD_ROOT_REL = ..
 endif
 

 ALLFFLIBS = avcodec avdevice avfilter avformat avutil postproc swscale
 

 CFLAGS := -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE \

           -I$(BUILD_ROOT_REL) -I$(SRC_PATH) $(OPTFLAGS)

 
 %.o: %.c
 	$(CC) $(CFLAGS) $(LIBOBJFLAGS) -c -o $@ $<
 
 %.o: %.S
 	$(CC) $(CFLAGS) $(LIBOBJFLAGS) -c -o $@ $<
 

 %.ho: %.h
 	$(CC) $(CFLAGS) $(LIBOBJFLAGS) -Wno-unused -c -o $@ -x c $<
 

 %.d: %.c
 	$(DEPEND_CMD) > $@
 
 %.d: %.S
 	$(DEPEND_CMD) > $@
 
 %.d: %.cpp
 	$(DEPEND_CMD) > $@
 

 %.o: %.d
 

 %$(EXESUF): %.c
 

 %.ver: %.v
 	sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ > $@
 

 SVN_ENTRIES = $(SRC_PATH_BARE)/.svn/entries
 ifeq ($(wildcard $(SVN_ENTRIES)),$(SVN_ENTRIES))
 $(BUILD_ROOT_REL)/version.h: $(SVN_ENTRIES)
 endif
 

 $(BUILD_ROOT_REL)/version.h: $(SRC_PATH_BARE)/version.sh

 	$< $(SRC_PATH) $@ $(EXTRA_VERSION)

 install: install-libs install-headers

 uninstall: uninstall-libs uninstall-headers

 .PHONY: all depend dep clean distclean install* uninstall* tests
 endif

 CFLAGS   += $(CFLAGS-yes)
 OBJS     += $(OBJS-yes)
 FFLIBS   := $(FFLIBS-yes) $(FFLIBS)

 TESTS    += $(TESTS-yes)

 FFEXTRALIBS := $(addprefix -l,$(addsuffix $(BUILDSUF),$(FFLIBS))) $(EXTRALIBS)
 FFLDFLAGS   := $(addprefix -L$(BUILD_ROOT)/lib,$(FFLIBS)) $(LDFLAGS)

 OBJS  := $(addprefix $(SUBDIR),$(OBJS))
 TESTS := $(addprefix $(SUBDIR),$(TESTS))

 DEP_LIBS:=$(foreach NAME,$(FFLIBS),lib$(NAME)/$($(BUILD_SHARED:yes=S)LIBNAME))
 

 ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)/$(ARCH)/*.h))

 checkheaders: $(filter-out %_template.ho,$(ALLHEADERS:.h=.ho))

 DEPS := $(OBJS:.o=.d)
 depend dep: $(DEPS)

 CLEANSUFFIXES = *.o *~ *.ho *.ver

 LIBSUFFIXES   = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a *.exp *.map

 DISTCLEANSUFFIXES = *.d *.pc

 define RULES

 $(SUBDIR)%$(EXESUF): $(SUBDIR)%.o
 	$(CC) $(FFLDFLAGS) -o $$@ $$^ $(SUBDIR)$(LIBNAME) $(FFEXTRALIBS)

 $(SUBDIR)%-test.o: $(SUBDIR)%.c
 	$(CC) $(CFLAGS) -DTEST -c -o $$@ $$^
 
 $(SUBDIR)%-test.o: $(SUBDIR)%-test.c
 	$(CC) $(CFLAGS) -DTEST -c -o $$@ $$^

 $(SUBDIR)x86/%.o: $(SUBDIR)x86/%.asm

 	$(YASM) $(YASMFLAGS) -I $$(<D)/ -o $$@ $$<
 

 $(SUBDIR)x86/%.d: $(SUBDIR)x86/%.asm

 	$(YASM) $(YASMFLAGS) -I $$(<D)/ -M -o $$(@:%.d=%.o) $$< > $$@
 

 clean::

 	rm -f $(TESTS) $(addprefix $(SUBDIR),$(CLEANFILES) $(CLEANSUFFIXES) $(LIBSUFFIXES)) \
 	    $(addprefix $(SUBDIR), $(foreach suffix,$(CLEANSUFFIXES),$(addsuffix /$(suffix),$(DIRS))))

 distclean:: clean

 	rm -f  $(addprefix $(SUBDIR),$(DISTCLEANSUFFIXES)) \
             $(addprefix $(SUBDIR), $(foreach suffix,$(DISTCLEANSUFFIXES),$(addsuffix /$(suffix),$(DIRS))))

 endef

 $(eval $(RULES))

 tests: $(TESTS)

 -include $(DEPS)