Test pulseaudio installation

Author: Cuda-Chen

Makefile

@@ -74,7 +74,10 @@ ifeq ($(call has, VIRTIOSND), 1)
 	# 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 += $(PORTAUDIOLIB) -lasound -lpthread -lrt -lpulse
+    LDFLAGS += $(PORTAUDIOLIB) -lasound -lpthread -lrt
+    ifneq (0, $(call check-pa))
+        LDFLAGS += -lpulse
+    endif
     CFLAGS += -Iportaudio/include
 
 portaudio/Makefile:

mk/check-libs.mk

@@ -10,8 +10,25 @@ int main(){\n\
 }\n'
 endef
 
+# Create a mininal PulseAudio program
+define create-pa-prog
+echo '\
+#include <pulseaudio/pulseaudio.h>\n\
+int main(){\n\
+pa_mainloop *m = NULL;\n\
+ma_mainloop_free(m);\n\
+return 0;\n\
+}\n'
+endef
+
 # Check ALSA installation
 define check-alsa
 $(shell $(call create-alsa-prog) | $(CC) -x c -lasound -o /dev/null > /dev/null 2> /dev/null - 
 	&& echo $$?)
 endef
+
+# Check PulseAudio installation
+define check-pa
+$(shell $(call create-pa-prog) | $(CC) -x c -lpulse -o /dev/null > /dev/null 2> /dev/null - 
+	&& echo $$?)
+endef