Makefiles: Honour WIRINGPI_SONAME_SUFFIX

This makes it possible for the caller of ./build to add a version
number to the sonames of the shared libraries.  (This is required for
Debian packages.)

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

devLib/Makefile

@@ -66,7 +66,7 @@ $(STATIC):	$(OBJ)
 
 $(DYNAMIC):	$(OBJ)
 	$Q echo "[Link (Dynamic)]"
-	$Q $(CC) -shared -Wl,-soname,libwiringPiDev.so -o libwiringPiDev.so.$(VERSION) -lpthread $(OBJ)
+	$Q $(CC) -shared -Wl,-soname,libwiringPiDev.so$(WIRINGPI_SONAME_SUFFIX) -o libwiringPiDev.so.$(VERSION) -lpthread $(OBJ)
 
 .c.o:
 	$Q echo [Compile] $<

wiringPi/Makefile

@@ -89,7 +89,7 @@ $(STATIC):	$(OBJ)
 
 $(DYNAMIC):	$(OBJ)
 	$Q echo "[Link (Dynamic)]"
-	$Q $(CC) -shared -Wl,-soname,libwiringPi.so -o libwiringPi.so.$(VERSION) -lpthread $(OBJ)
+	$Q $(CC) -shared -Wl,-soname,libwiringPi.so$(WIRINGPI_SONAME_SUFFIX) -o libwiringPi.so.$(VERSION) -lpthread $(OBJ)
 
 .c.o:
 	$Q echo [Compile] $<