--- a/arss.c
+++ b/arss.c
@@ -31,6 +31,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.*
 
 char *version = "0.2.3";
 char *date = "May 29th, 2008";
+extern int32_t quiet;
 
 #define MSG_NUMBER_EXPECTED "A number is expected after %s\nExiting with error.\n"
 
--- a/dsp.c
+++ b/dsp.c
@@ -1,5 +1,12 @@
 #include "dsp.h"
 
+double pi;
+double LOGBASE;
+double LOOP_SIZE_SEC;
+int32_t BMSQ_LUT_SIZE;
+int32_t clocka;
+
+
 void fft(double *in, double *out, int32_t N, uint8_t method)
 {
 	/* method :
--- a/dsp.h
+++ b/dsp.h
@@ -17,13 +17,13 @@
 #define LOOP_SIZE_SEC_D	10.0
 #define BMSQ_LUT_SIZE_D	16000
 
-double pi;
-double LOGBASE;			// Base for log() operations. Anything other than 2 isn't really supported
+extern double pi;
+extern double LOGBASE;			// Base for log() operations. Anything other than 2 isn't really supported
 #define TRANSITION_BW_SYNT 16.0		// defines the transition bandwidth for the low-pass filter on the envelopes during synthesisation
-double LOOP_SIZE_SEC;		// size of the noise loops in seconds
-int32_t BMSQ_LUT_SIZE;		// defines the number of elements in the Blackman Square look-up table. It's best to make it small enough to be entirely cached
+extern double LOOP_SIZE_SEC;		// size of the noise loops in seconds
+extern int32_t BMSQ_LUT_SIZE;		// defines the number of elements in the Blackman Square look-up table. It's best to make it small enough to be entirely cached
 
-int32_t clocka;
+extern int32_t clocka;
 
 extern void fft(double *in, double *out, int32_t N, uint8_t method);
 extern void normi(double **s, int32_t xs, int32_t ys, double ratio);
--- a/util.c
+++ b/util.c
@@ -1,5 +1,7 @@
 #include "util.h"
 
+int32_t quiet;
+
 void win_return()
 {
 	#ifdef WIN32
--- a/util.h
+++ b/util.h
@@ -11,7 +11,7 @@
 
 #include "dsp.h"
 
-int32_t quiet;
+extern int32_t quiet;
 
 extern void win_return();
 extern int32_t gettime();