diff --git a/ChangeLog b/ChangeLog
index 729205f..700b17b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun May 17 16:37:26 2009  Minero Aoki  <aamine@loveruby.net>
+
+	* import/dlfcn.hb: new declaration file dlfcn.hb.
+
 Sun May 17 16:36:49 2009  Minero Aoki  <aamine@loveruby.net>
 
 	* net/loveruby/cflat/entity/ToplevelScope.java: do not warn unused
diff --git a/import/dlfcn.hb b/import/dlfcn.hb
new file mode 100644
index 0000000..e8201d9
--- /dev/null
+++ b/import/dlfcn.hb
@@ -0,0 +1,16 @@
+// dlfcn.hb
+
+// from bits/dlfcn.h
+const int RTLD_LAZY     = 0x0001;
+const int RTLD_NOW      = 0x0002;
+const int RTLD_NOLOAD   = 0x0004;
+const int RTLD_DEEPBIND = 0x0008;
+const int RTLD_LOCAL    = 0x0000;
+const int RTLD_GLOBAL   = 0x0100;
+const int RTLD_NODELETE = 0x1000;
+
+// from dlfcn.h
+extern void* dlopen(char* filename, int flag);
+extern char* dlerror(void);
+extern void* dlsym(void* handle, char* symbol);
+extern int dlclose(void* handle);