fix: use specific flags when architecture is ARM (#1)

Previously compilation of Electric would not work on osx due to some missing flag.
This PR adds some specific flags that are needed when running on arm architecture.

Author: kevin-dp

Makefile

@@ -5,7 +5,11 @@ CFLAGS += -I$(ERLANG_PATH)
 LIBPG_QUERY_PATH = c_src/libpg_query
 
 CFLAGS += -I$(LIBPG_QUERY_PATH) -fPIC
-LDFLAGS = -lpthread -lrt
+UNAME_P := $(shell uname -p)
+LDFLAGS = -lpthread
+ifneq ($(filter arm%,$(UNAME_P)),)
+    LDFLAGS += -undefined dynamic_lookup
+endif
 
 .PHONY: all libpg_query_ex clean