Index: src/nco/src/nco_crcf.c
--- src/nco/src/nco_crcf.c.orig
+++ src/nco/src/nco_crcf.c
@@ -26,6 +26,11 @@
 
 #include "liquid.internal.h"
 
+#ifdef M_PI
+#undef M_PI
+#endif
+#define M_PI 3.141592653589793238462643383279502884
+
 #define NCO(name)   LIQUID_CONCAT(nco_crcf,name)
 #define SYNTH(name) LIQUID_CONCAT(synth_crcf,name)
 #define EXTENSION   "crcf"
