--- configure.ac	(Asterisk 15.4.1)
+++ configure.ac	(working copy)
@@ -2355 +2355 @@
-AST_EXT_LIB_CHECK([FFTW3], [fftw3], [fftw_alloc_real], [fftw3.h])
+AST_EXT_LIB_CHECK([FFTW3], [fftw3], [fftw_malloc], [fftw3.h])
--- bridges/bridge_softmix/bridge_softmix_binaural.c	(Asterisk 15.4.1)
+++ bridges/bridge_softmix/bridge_softmix_binaural.c	(working copy)
@@ -196 +196 @@
-	channel->fftw_in = fftw_alloc_real(hrtf_len + 1);
+	channel->fftw_in = (double *) fftw_malloc(sizeof(double) * hrtf_len + 1);
@@ -201 +201 @@
-	channel->fftw_out = fftw_alloc_real(hrtf_len + 1);
+	channel->fftw_out = (double *) fftw_malloc(sizeof(double) * hrtf_len + 1);
@@ -242 +242 @@
-	channel->hrtf = fftw_alloc_real(hrtf_len);
+	channel->hrtf = (double *) fftw_malloc(sizeof(double) * hrtf_len);