diff --git a/stbiw/CMakeLists.txt b/stbiw/CMakeLists.txt
index b56b853..9e21491 100644
--- a/stbiw/CMakeLists.txt
+++ b/stbiw/CMakeLists.txt
@@ -1 +1,2 @@
-message(FATAL_ERROR "请修改 stbiw/CMakeLists.txt！要求生成一个名为 stbiw 的库")
+add_library(stbiw STATIC stb_image_write.cpp)
+target_include_directories(stbiw PUBLIC .)
diff --git a/stbiw/stb_image_write.cpp b/stbiw/stb_image_write.cpp
new file mode 100644
index 0000000..22ffc60
--- /dev/null
+++ b/stbiw/stb_image_write.cpp
@@ -0,0 +1,3 @@
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+
+#include <stb_image_write.h>