diff --git a/include/errno.h b/include/errno.h
index 1b4a473f..19e8f5c0 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -29,6 +29,7 @@
 #else // ! WITH_GLIBC
 int errno;
 #define ENOENT   2
+#define EINTR    4
 #define EIO      5
 #define EBADF    9
 #define EAGAIN  11
diff --git a/include/fcntl.h b/include/fcntl.h
index 27666185..ab89de08 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -28,12 +28,16 @@
 #include_next <fcntl.h>
 
 #else // ! WITH_GLIBC
+
 #define O_RDONLY 0
 #define O_WRONLY 1
 #define O_RDWR 2
 #define O_CREAT 64
 #define O_EXCL 128
 #define O_TRUNC 512
+#define O_APPEND 1024
+
+#define FD_CLOEXEC 1
 
 #define F_DUPFD 0
 #define F_GETFD 1
diff --git a/include/sys/resource.h b/include/sys/resource.h
index 29c359f3..099bb5fc 100644
--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@@ -26,6 +26,8 @@
 
 #else // ! WITH_GLIBC
 
+#include <sys/time.h>
+
 struct rusage
 {
   struct timeval ru_utime;
diff --git a/lib/binutils.c b/lib/binutils.c
index 102bed10..13f212b8 100644
--- a/lib/binutils.c
+++ b/lib/binutils.c
@@ -223,3 +223,55 @@ sbrk (intptr_t delta)
     return malloc (delta);
   return g_brk;
 }
+
+// binutils 2.30
+char *
+strdup (char const *s)
+{
+  size_t length = strlen (s) + 1;
+  char *p = (char*)malloc (length);
+  if (p)
+    return memcpy (p, s, length);
+  return 0;
+}
+
+int
+raise (int signum)
+{
+  kill (getpid (), signum);
+}
+
+size_t
+strftime (char *s, size_t size, char const *template,
+          struct tm const *brokentime)
+{
+   eputs ("strftime stub\n");
+   return template;
+}
+
+#if !__MESC__
+typedef char wchar_t[];
+
+size_t
+mbstowcs (wchar_t *wstring, char const *string,
+          size_t size)
+{
+  eputs ("mbstowcs stub\n");
+  strcpy (wstring, string);
+  return strlen (string);
+}
+#endif
+
+void
+clearerr (FILE *stream)
+{
+  errno = 0;
+}
+
+double
+fabs (double number)
+{
+  if (number < 0)
+    return -number;
+  return number;
+}