Merge commit '47d4dcf042f5ec927d592f03964cd12aab2bb66f' as 'backend/go-sqlite3'

backend/go-sqlite3/_example/mod_regexp/Makefile

@@ -0,0 +1,27 @@
+ifeq ($(OS),Windows_NT)
+EXE=extension.exe
+LIB_EXT=dll
+RM=cmd /c del
+LDFLAG=
+else
+EXE=extension
+ifeq ($(shell uname -s),Darwin)
+LIB_EXT=dylib
+else
+LIB_EXT=so
+endif
+RM=rm -f
+LDFLAG=-fPIC
+endif
+LIB=sqlite3_mod_regexp.$(LIB_EXT)
+
+all : $(EXE) $(LIB)
+
+$(EXE) : extension.go
+	go build $<
+
+$(LIB) : sqlite3_mod_regexp.c
+	gcc $(LDFLAG) -shared -o $@ $< -lsqlite3 -lpcre
+
+clean :
+	@-$(RM) $(EXE) $(LIB)