Updated pid.c plugin for OSX compile

pid/Makefile

@@ -1,11 +1,18 @@
+UNAME_S := $(shell uname -s)
+ifeq ($(UNAME_S),Darwin)
+    LINK_FLAGS := -fno-common -flat_namespace -bundle -undefined suppress
+else
+    LINK_FLAGS := -shared -fpic
+endif
+
 all: pid.so
 
 %.so:%.o
-	$(CC) -shared -fpic -lprofanity -o $@ $^
+	$(CC) $(LINK_FLAGS) -lprofanity -o $@ $^
 
 %.o:%.c
 	$(CC) $(INCLUDE) -D_GNU_SOURCE -D_BSD_SOURCE -fpic -O3 -std=c99 \
-        -Wall -Wextra -lprofanity -pedantic -c -o $@ $<
+        -Wall -Wextra -pedantic -c -o $@ $<
 
 clean:
 	$(RM) pid.so