update

Author: Cuda-Chen

Makefile

@@ -67,7 +67,7 @@ ifeq ($(UNAME_S),Linux)
     endif
 endif
 ifeq ($(UNAME_S),Darwin)
-    ifeq (0, $(call check-ca))
+    ifeq (0, $(call check-coreaudio))
         $(warning No CoreAudio installed Check AudioToolbox in advance.)
         ENABLE_VIRTIOSND := 0
     endif
@@ -91,9 +91,9 @@ ifeq ($(call has, VIRTIOSND), 1)
     endif
 
     CFLAGS += -Iportaudio/include
-	# PortAudio requires libm, yet we set -lm in the end of LDFLAGS
-	# so that the other libraries will be benefited for no need to set
-	# -lm separately.
+    # PortAudio requires libm, yet we set -lm in the end of LDFLAGS
+    # so that the other libraries will be benefited for no need to set
+    # -lm separately.
     LDFLAGS += -lpthread
 
 portaudio/Makefile: