diff --git a/libc/include/elf.h b/libc/include/elf.h
index 7a9485a..7de464e 100644
--- a/libc/include/elf.h
+++ b/libc/include/elf.h
@@ -54,6 +54,35 @@
 #define DF_BIND_NOW   0x00000008
 #define DF_STATIC_TLS 0x00000010
 
+#define DF_1_NOW        0x00000001 // Perform complete relocation processing.
+#define DF_1_GLOBAL     0x00000002 // implies RTLD_GLOBAL
+#define DF_1_GROUP      0x00000004
+#define DF_1_NODELETE   0x00000008 // implies RTLD_NODELETE
+#define DF_1_LOADFLTR   0x00000010
+#define DF_1_INITFIRST  0x00000020
+#define DF_1_NOOPEN     0x00000040 // Object can not be used with dlopen(3)
+#define DF_1_ORIGIN     0x00000080
+#define DF_1_DIRECT     0x00000100
+#define DF_1_TRANS      0x00000200
+#define DF_1_INTERPOSE  0x00000400
+#define DF_1_NODEFLIB   0x00000800
+#define DF_1_NODUMP     0x00001000 // Object cannot be dumped with dldump(3)
+#define DF_1_CONFALT    0x00002000
+#define DF_1_ENDFILTEE  0x00004000
+#define DF_1_DISPRELDNE 0x00008000
+#define DF_1_DISPRELPND 0x00010000
+#define DF_1_NODIRECT   0x00020000
+#define DF_1_IGNMULDEF  0x00040000 // Internal use
+#define DF_1_NOKSYMS    0x00080000 // Internal use
+#define DF_1_NOHDR      0x00100000 // Internal use
+#define DF_1_EDITED     0x00200000
+#define DF_1_NORELOC    0x00400000 // Internal use
+#define DF_1_SYMINTPOSE 0x00800000
+#define DF_1_GLOBAUDIT  0x01000000
+#define DF_1_SINGLETON  0x02000000
+#define DF_1_STUB       0x04000000
+#define DF_1_PIE        0x08000000
+
 #define DT_BIND_NOW 24
 #define DT_INIT_ARRAY 25
 #define DT_FINI_ARRAY 26