add DisallowSqliteAttach feature

extensions/Makefile

@@ -0,0 +1,34 @@
+.PHONY: all headers
+
+ifeq ($(OS),Windows_NT)
+	OUTPUT = lib/noattach.dll
+	CCFLAGS = -shared
+else
+	UNAME := $(shell uname)
+	CCFLAGS = -fPIC -Os -shared
+	ifeq ($(UNAME),Darwin)
+		ifeq ($(shell uname -m),arm64)
+			OUTPUT = lib/arm/noattach.dylib
+		else
+			OUTPUT = lib/noattach.dylib
+		endif
+	else
+		ifeq ($(shell uname -m),aarch64)
+			OUTPUT = lib/arm/noattach.so
+		else
+			OUTPUT = lib/noattach.so
+		endif
+	endif
+endif
+
+all: $(OUTPUT)
+
+headers:
+	# To simplify compilation across platforms, we include sqlite3ext.h in this directory.
+	curl -L https://www.sqlite.org/2024/sqlite-amalgamation-3470200.zip -o sqlite-src.zip
+	unzip sqlite-src.zip
+	cp sqlite-amalgamation-3470200/*.h .
+
+$(OUTPUT): noattach.c
+	# We don't link against libsqlite3 since PHP statically links its own libsqlite3.
+	$(CC) $(CCFLAGS) -o $@ $<