diff --git a/configure b/configure
index 44b1af4436..c875ae4569 100755
--- a/configure
+++ b/configure
@@ -2066,13 +2066,13 @@ echo "SRC_PATH=$source_path" >> config.mak
 echo "BUILD_ROOT=$PWD" >> config.mak
 
 if test "$amr" = "yes" ; then
-  echo "#define AMR 1" >> $TMPH
-  echo "AMR=yes" >> config.mak
+  echo "#define CONFIG_AMR 1" >> $TMPH
+  echo "CONFIG_AMR=yes" >> config.mak
 fi
 
 if test "$amr_wb" = "yes" ; then
-  echo "#define AMR_WB 1" >> $TMPH
-  echo "AMR_WB=yes" >> config.mak
+  echo "#define CONFIG_AMR_WB 1" >> $TMPH
+  echo "CONFIG_AMR_WB=yes" >> config.mak
   echo
   echo "AMR WB FLOAT NOTICE ! Make sure you have downloaded TS26.204"
   echo "V5.1.0 from "
@@ -2081,8 +2081,8 @@ if test "$amr_wb" = "yes" ; then
 fi
 
 if test "$amr_nb" = "yes" ; then
-  echo "#define AMR_NB 1" >> $TMPH
-  echo "AMR_NB=yes" >> config.mak
+  echo "#define CONFIG_AMR_NB 1" >> $TMPH
+  echo "CONFIG_AMR_NB=yes" >> config.mak
   echo
   echo "AMR NB FLOAT NOTICE ! Make sure you have downloaded TS26.104"
   echo "REL-5 V5.1.0 from "
@@ -2092,8 +2092,8 @@ if test "$amr_nb" = "yes" ; then
 fi
 
 if test "$amr_nb_fixed" = "yes" ; then
-  echo "#define AMR_NB_FIXED 1" >> $TMPH
-  echo "AMR_NB_FIXED=yes" >> config.mak
+  echo "#define CONFIG_AMR_NB_FIXED 1" >> $TMPH
+  echo "CONFIG_AMR_NB_FIXED=yes" >> config.mak
   echo
   echo "AMR NB FIXED POINT NOTICE! Make sure you have downloaded TS26.073 "
   echo "REL-5 version 5.1.0 from "
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index d5568ce604..17c1680274 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -228,18 +228,18 @@ OBJS-$(CONFIG_AC3)$(CONFIG_A52BIN)     += liba52/bit_allocate.o \
 # currently using libdts for dts decoding
 OBJS-$(CONFIG_DTS)                     += dtsdec.o
 
-OBJS-$(AMR)                            += amr.o
-OBJS-$(AMR_NB)                         += amr_float/sp_dec.o     \
+OBJS-$(CONFIG_AMR)                     += amr.o
+OBJS-$(CONFIG_AMR_NB)                  += amr_float/sp_dec.o     \
                                           amr_float/sp_enc.o     \
                                           amr_float/interf_dec.o \
                                           amr_float/interf_enc.o
 
-ifeq ($(AMR_NB_FIXED),yes)
+ifeq ($(CONFIG_AMR_NB_FIXED),yes)
 EXTRAOBJS += amr/*.o
 EXTRADEPS=amrlibs
 endif
 
-OBJS-$(AMR_WB)                        +=  amrwb_float/dec_acelp.o \
+OBJS-$(CONFIG_AMR_WB)                 +=  amrwb_float/dec_acelp.o \
                                           amrwb_float/dec_dtx.o   \
                                           amrwb_float/dec_gain.o  \
                                           amrwb_float/dec_if.o    \
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 172193fc1d..c87b5973df 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -540,7 +540,7 @@ void avcodec_register_all(void)
 #endif //CONFIG_FLASHSV_DECODER
 #endif /* CONFIG_DECODERS */
 
-#if defined(AMR_NB) || defined(AMR_NB_FIXED)
+#if defined(CONFIG_AMR_NB) || defined(CONFIG_AMR_NB_FIXED)
 #ifdef CONFIG_AMR_NB_DECODER
     register_avcodec(&amr_nb_decoder);
 #endif //CONFIG_AMR_NB_DECODER
@@ -549,9 +549,9 @@ void avcodec_register_all(void)
     register_avcodec(&amr_nb_encoder);
 #endif //CONFIG_AMR_NB_ENCODER
 #endif //CONFIG_ENCODERS
-#endif /* AMR_NB || AMR_NB_FIXED */
+#endif /* CONFIG_AMR_NB || CONFIG_AMR_NB_FIXED */
 
-#ifdef AMR_WB
+#ifdef CONFIG_AMR_WB
 #ifdef CONFIG_AMR_WB_DECODER
     register_avcodec(&amr_wb_decoder);
 #endif //CONFIG_AMR_WB_DECODER
@@ -560,7 +560,7 @@ void avcodec_register_all(void)
     register_avcodec(&amr_wb_encoder);
 #endif //CONFIG_AMR_WB_ENCODER
 #endif //CONFIG_ENCODERS
-#endif /* AMR_WB */
+#endif /* CONFIG_AMR_WB */
 
 #ifdef CONFIG_BMP_DECODER
     register_avcodec(&bmp_decoder);
diff --git a/libavcodec/amr.c b/libavcodec/amr.c
index 6a354130c3..a3f4e79fa4 100644
--- a/libavcodec/amr.c
+++ b/libavcodec/amr.c
@@ -55,7 +55,7 @@
 
 #include "avcodec.h"
 
-#ifdef AMR_NB_FIXED
+#ifdef CONFIG_AMR_NB_FIXED
 
 #define MMS_IO
 
@@ -107,7 +107,7 @@ static enum Mode getBitrateMode(int bitrate)
     return(MR122);
 }
 
-#ifdef AMR_NB_FIXED
+#ifdef CONFIG_AMR_NB_FIXED
 /* fixed point version*/
 /* frame size in serial bitstream file (frame type + serial stream + flags) */
 #define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5)
@@ -326,7 +326,7 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
 }
 
 
-#elif defined(AMR_NB) /* Float point version*/
+#elif defined(CONFIG_AMR_NB) /* Float point version*/
 
 typedef struct AMRContext {
     int frameCount;
@@ -457,7 +457,7 @@ static int amr_nb_encode_frame(AVCodecContext *avctx,
 
 #endif
 
-#if defined(AMR_NB) || defined(AMR_NB_FIXED)
+#if defined(CONFIG_AMR_NB) || defined(CONFIG_AMR_NB_FIXED)
 
 AVCodec amr_nb_decoder =
 {
@@ -486,7 +486,7 @@ AVCodec amr_nb_encoder =
 #endif
 
 /* -----------AMR wideband ------------*/
-#ifdef AMR_WB
+#ifdef CONFIG_AMR_WB
 
 #ifdef _TYPEDEF_H
 //To avoid duplicate typedefs from typdef in amr-nb
@@ -661,4 +661,4 @@ AVCodec amr_wb_encoder =
     NULL,
 };
 
-#endif //AMR_WB
+#endif //CONFIG_AMR_WB