关于Makefile，急求帮助？
include config.mak

VPATH=$(SRC_PATH_BARE)

CFLAGS=$(OPTFLAGS) -I$(BUILD_ROOT) -I$(SRC_PATH) -I$(SRC_PATH)/libavutil \
-I$(SRC_PATH)/libavcodec -I$(SRC_PATH)/libavformat -I$(SRC_PATH)/libswscale \
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE
LDFLAGS+= -g

ifeq ($(CONFIG_FFMPEG),yes)
MANPAGES=doc/ffmpeg.1
PROGS_G+=ffmpeg_g$(EXESUF)
PROGS+=ffmpeg$(EXESUF)
endif

ifeq ($(CONFIG_FFSERVER),yes)
MANPAGES+=doc/ffserver.1
PROGS+=ffserver$(EXESUF)
endif

ifeq ($(CONFIG_FFPLAY),yes)
MANPAGES+=doc/ffplay.1
PROGS_G+=ffplay_g$(EXESUF)
PROGS+=ffplay$(EXESUF)
endif

BASENAMES=ffmpeg ffplay ffserver
ALLPROGS=$(addsuffix $(EXESUF), $(BASENAMES))
ALLPROGS_G=$(addsuffix _g$(EXESUF), $(BASENAMES))
ALLMANPAGES=$(addsuffix .1, $(BASENAMES))

ifeq ($(BUILD_SHARED),yes)
DEP_LIBS=libavcodec/$(SLIBPREF)avcodec$(SLIBSUF) libavformat/$(SLIBPREF)avformat$(SLIBSUF)
else
DEP_LIBS=libavcodec/$(LIBPREF)avcodec$(LIBSUF) libavformat/$(LIBPREF)avformat$(LIBSUF)
endif

ifeq ($(CONFIG_VHOOK),yes)
VHOOK=videohook
INSTALLVHOOK=install-vhook
endif

ifeq ($(BUILD_DOC),yes)
DOC=documentation
INSTALLMAN=install-man
endif

OBJS = ffmpeg.o ffserver.o cmdutils.o ffplay.o
SRCS = $(OBJS:.o=.c) $(ASM_OBJS:.o=.s)
LDFLAGS := -L$(BUILD_ROOT)/libavformat -L$(BUILD_ROOT)/libavcodec -L$(BUILD_ROOT)/libavutil $(LDFLAGS)
EXTRALIBS := -lavformat$(BUILDSUF) -lavcodec$(BUILDSUF) -lavutil$(BUILDSUF) $(EXTRALIBS)

ifeq ($(CONFIG_SWSCALER),yes)
LDFLAGS+=-L./libswscale
EXTRALIBS+=-lswscale$(BUILDSUF)
endif

all: lib $(PROGS) $(VHOOK) $(DOC)

lib:
$(MAKE) -C libavutil all
$(MAKE) -C libavcodec all
$(MAKE) -C libavformat all
ifeq ($(CONFIG_PP),yes)
$(MAKE) -C libpostproc all
endif
ifeq ($(CONFIG_SWSCALER),yes)
$(MAKE) -C libswscale all
endif

ffmpeg_g$(EXESUF): ffmpeg.o cmdutils.o .libs
$(CC) $(LDFLAGS) -o $@ ffmpeg.o cmdutils.o $(EXTRALIBS)

ffserver$(EXESUF): ffserver.o .libs
$(CC) $(LDFLAGS) $(FFSERVERLDFLAGS) -o $@ ffserver.o $(EXTRALIBS)

ffplay_g$(EXESUF): ffplay.o cmdutils.o .libs
$(CC) $(LDFLAGS) -o $@ ffplay.o cmdutils.o $(EXTRALIBS) $(SDL_LIBS)

%$(EXESUF): %_g$(EXESUF)
cp -p $ < $@
$(STRIP) $@

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

version.h:
$(SRC_PATH)/version.sh $(SRC_PATH)

output_example$(EXESUF): output_example.o .libs
$(CC) $(LDFLAGS) -o $@ output_example.o $(EXTRALIBS)

qt-faststart$(EXESUF): qt-faststart.c
$(CC) $(CFLAGS) $ < -o $@

cws2fws$(EXESUF): cws2fws.c
$(CC) $ < -o $@ -lz

ffplay.o: ffplay.c
$(CC) $(CFLAGS) $(SDL_CFLAGS) -c -o $@ $ <

ffmpeg.o ffplay.o ffserver.o: version.h

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

videohook: .libs
$(MAKE) -C vhook all

documentation:
$(MAKE) -C doc all

[解决办法]
加在CFLAGS后面试试？