Squashed 'backend/go-sqlite3/' content from commit 20826e8

git-subtree-dir: backend/go-sqlite3
git-subtree-split: 20826e87d8f061d0a7266562f43950ee06e2e9c0

_example/mod_vtable/Makefile

@@ -0,0 +1,29 @@
+ifeq ($(OS),Windows_NT)
+EXE=extension.exe
+LIB_EXT=dll
+RM=cmd /c del
+LIBCURL=-lcurldll
+LDFLAG=
+else
+EXE=extension
+ifeq ($(shell uname -s),Darwin)
+LIB_EXT=dylib
+else
+LIB_EXT=so
+endif
+RM=rm -f
+LDFLAG=-fPIC
+LIBCURL=-lcurl
+endif
+LIB=sqlite3_mod_vtable.$(LIB_EXT)
+
+all : $(EXE) $(LIB)
+
+$(EXE) : extension.go
+	go build $<
+
+$(LIB) : sqlite3_mod_vtable.cc
+	g++ $(LDFLAG) -shared -o $@ $< -lsqlite3 $(LIBCURL)
+
+clean :
+	@-$(RM) $(EXE) $(LIB)