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  • # use pkg-config for getting CFLAGS and LDLIBS
    FFMPEG_LIBS=    libavdevice                        \
                    libavformat                        \
                    libavfilter                        \
                    libavcodec                         \
                    libswresample                      \
                    libswscale                         \
                    libavutil                          \
    
    CFLAGS += -Wall -g
    CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
    LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
    
    EXAMPLES=       avio_dir_cmd                       \
                    avio_reading                       \
                    decode_audio                       \
                    decode_video                       \
                    demuxing_decoding                  \
                    encode_audio                       \
                    encode_video                       \
                    extract_mvs                        \
                    filtering_video                    \
                    filtering_audio                    \
                    http_multiclient                   \
                    hw_decode                          \
                    metadata                           \
                    muxing                             \
                    remuxing                           \
                    resampling_audio                   \
                    scaling_video                      \
                    transcode_aac                      \
                    transcoding                        \
    
    OBJS=$(addsuffix .o,$(EXAMPLES))
    
    # the following examples make explicit use of the math library
    avcodec:           LDLIBS += -lm
    encode_audio:      LDLIBS += -lm
    muxing:            LDLIBS += -lm
    resampling_audio:  LDLIBS += -lm
    
    .phony: all clean-test clean
    
    all: $(OBJS) $(EXAMPLES)
    
    clean-test:
    	$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
    
    clean: clean-test
    	$(RM) $(EXAMPLES) $(OBJS)