diff --git a/libc/bionic/ndk_cruft.cpp b/libc/bionic/ndk_cruft.cpp
index 2fed492..295418b 100644
--- a/libc/bionic/ndk_cruft.cpp
+++ b/libc/bionic/ndk_cruft.cpp
@@ -32,6 +32,7 @@
 #include <ctype.h>
 #include <inttypes.h>
 #include <pthread.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <sys/resource.h>
 #include <sys/time.h>
@@ -184,4 +185,18 @@
   return (intmax_t) strntoumax(nptr, endptr, base, n);
 }
 
+// POSIX calls this dprintf, but LP32 Android had fdprintf instead.
+extern "C" int fdprintf(int fd, const char* fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  int rc = vdprintf(fd, fmt, ap);
+  va_end(ap);
+  return rc;
+}
+
+// POSIX calls this vdprintf, but LP32 Android had fdprintf instead.
+extern "C" int vfdprintf(int fd, const char* fmt, va_list ap) {
+  return vdprintf(fd, fmt, ap);
+}
+
 #endif