build: Add rtpenc_chain extra config option

Also fixes linking in various configs with only individual parts enabled
because the RTP muxer chaining code depends on the general RTP code,
which is now accounted for.

configure

@@ -1328,6 +1328,7 @@ CONFIG_EXTRA="
     nettle
     rangecoder
     rtpdec
+    rtpenc_chain
     sinewin
     videodsp
     vp3dsp
@@ -1674,6 +1675,7 @@ ismv_muxer_select="mov_muxer"
 matroska_audio_muxer_select="matroska_muxer"
 matroska_demuxer_suggest="bzlib lzo zlib"
 mov_demuxer_suggest="zlib"
+mov_muxer_select="rtpenc_chain"
 mp3_demuxer_select="mpegaudio_parser"
 mp4_muxer_select="mov_muxer"
 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
@@ -1685,9 +1687,9 @@ rtp_demuxer_select="sdp_demuxer"
 rtp_muxer_select="mpegvideo"
 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
 rtsp_demuxer_select="http_protocol rtpdec"
-rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
+rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
 sap_demuxer_select="sdp_demuxer"
-sap_muxer_select="rtp_muxer rtp_protocol"
+sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
 sdp_demuxer_select="rtpdec"
 smoothstreaming_muxer_select="ismv_muxer"
 spdif_muxer_select="aac_parser"

libavformat/Makefile

@@ -41,6 +41,7 @@ OBJS-$(CONFIG_RTPDEC)                    += rdt.o                       \
                                             rtpdec_svq3.o               \
                                             rtpdec_vp8.o                \
                                             rtpdec_xiph.o
+OBJS-$(CONFIG_RTPENC_CHAIN)              += rtpenc_chain.o rtp.o
 
 # muxers/demuxers
 OBJS-$(CONFIG_A64_MUXER)                 += a64.o rawenc.o
@@ -167,8 +168,7 @@ OBJS-$(CONFIG_MMF_DEMUXER)               += mmf.o pcm.o
 OBJS-$(CONFIG_MMF_MUXER)                 += mmf.o
 OBJS-$(CONFIG_MOV_DEMUXER)               += mov.o isom.o mov_chan.o
 OBJS-$(CONFIG_MOV_MUXER)                 += movenc.o isom.o avc.o \
-                                            movenchint.o rtpenc_chain.o \
-                                            mov_chan.o
+                                            movenchint.o mov_chan.o
 OBJS-$(CONFIG_MP2_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o
 OBJS-$(CONFIG_MP3_DEMUXER)               += mp3dec.o
 OBJS-$(CONFIG_MP3_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o
@@ -282,9 +282,9 @@ OBJS-$(CONFIG_RTP_MUXER)                 += rtp.o         \
 OBJS-$(CONFIG_RTSP_DEMUXER)              += rtsp.o rtspdec.o httpauth.o \
                                             urldecode.o
 OBJS-$(CONFIG_RTSP_MUXER)                += rtsp.o rtspenc.o httpauth.o \
-                                            rtpenc_chain.o urldecode.o
+                                            urldecode.o
 OBJS-$(CONFIG_SAP_DEMUXER)               += sapdec.o
-OBJS-$(CONFIG_SAP_MUXER)                 += sapenc.o rtpenc_chain.o
+OBJS-$(CONFIG_SAP_MUXER)                 += sapenc.o
 OBJS-$(CONFIG_SDP_DEMUXER)               += rtsp.o
 OBJS-$(CONFIG_SEGAFILM_DEMUXER)          += segafilm.o
 OBJS-$(CONFIG_SEGMENT_MUXER)             += segment.o