diff --git a/libc/include/Makefile.am b/libc/include/Makefile.am
index a539eb01..3a76e8c1 100644
--- a/libc/include/Makefile.am
+++ b/libc/include/Makefile.am
@@ -2,6 +2,7 @@ nobase_include_HEADERS = \
 	ctype.h \
 	errno.h \
 	inttypes.h \
+	setjmp.h \
 	stdlib.h \
 	string.h \
 	sys/types.h
diff --git a/libc/include/setjmp.h b/libc/include/setjmp.h
new file mode 100644
index 00000000..349f0f3b
--- /dev/null
+++ b/libc/include/setjmp.h
@@ -0,0 +1,17 @@
+#ifndef _SETJMP_H
+#define _SETJMP_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int jmp_buf;
+
+int setjmp(jmp_buf env);
+void longjmp(jmp_buf env, int val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index cbac8f97..56e41db4 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -5,8 +5,19 @@
 extern "C" {
 #endif
 
+#include <stddef.h>
+
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
 int atoi(const char *str);
 
+void abort();
+void exit(int status);
+
+void free(void *ptr);
+void *realloc(void *ptr, size_t size);
+
 #ifdef __cplusplus
 }
 #endif