From 2c29d6760ca86095386f398d6751483b235e0806 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Fri, 8 Jan 2016 13:49:13 +0100
Subject: KISS FFT is broken, make sure compilation fails

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index bdbc05c..b71fb2e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -115,6 +115,10 @@ AS_IF([test "x$enable_fftw" = "xno"],
 AS_IF([test "x$enable_fftw" = "xyes"],
       [AC_DEFINE(USE_FFTW, [1], [Define to enable FFTW])])
 
+AS_IF([test "x$enable_fftw" = "xno"],
+      AC_MSG_ERROR([KISS FFT is currently broken. Please use FFTW. Any debugging help is appreciated]) )
+
+
 AX_PTHREAD([], AC_MSG_ERROR([requires pthread]))
 
 AC_SUBST([CFLAGS], ["$EXTRA $FFTW_CFLAGS $PTHREAD_CFLAGS"])
-- 
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