diff --git a/libc/src/__support/File/gpu/file.cpp b/libc/src/__support/File/gpu/file.cpp
--- a/libc/src/__support/File/gpu/file.cpp
+++ b/libc/src/__support/File/gpu/file.cpp
@@ -97,3 +97,10 @@
 File *stderr = &StdErr;
 
 } // namespace __llvm_libc
+
+// Provide the external defintitions of the standard IO streams.
+extern "C" {
+FILE *stdin = reinterpret_cast<FILE *>(&__llvm_libc::StdIn);
+FILE *stderr = reinterpret_cast<FILE *>(&__llvm_libc::StdErr);
+FILE *stdout = reinterpret_cast<FILE *>(&__llvm_libc::StdOut);
+}
diff --git a/libc/src/__support/File/linux/file.cpp b/libc/src/__support/File/linux/file.cpp
--- a/libc/src/__support/File/linux/file.cpp
+++ b/libc/src/__support/File/linux/file.cpp
@@ -183,3 +183,10 @@
 File *stderr = &StdErr;
 
 } // namespace __llvm_libc
+
+// Provide the external defintitions of the standard IO streams.
+extern "C" {
+FILE *stdin = reinterpret_cast<FILE *>(&__llvm_libc::StdIn);
+FILE *stderr = reinterpret_cast<FILE *>(&__llvm_libc::StdErr);
+FILE *stdout = reinterpret_cast<FILE *>(&__llvm_libc::StdOut);
+}
diff --git a/libc/src/stdio/stderr.cpp b/libc/src/stdio/stderr.cpp
--- a/libc/src/stdio/stderr.cpp
+++ b/libc/src/stdio/stderr.cpp
@@ -10,6 +10,4 @@
 
 #include <stdio.h>
 
-extern "C" {
-FILE *stderr = reinterpret_cast<FILE *>(__llvm_libc::stderr);
-}
+extern "C" FILE *stderr;
diff --git a/libc/src/stdio/stdin.cpp b/libc/src/stdio/stdin.cpp
--- a/libc/src/stdio/stdin.cpp
+++ b/libc/src/stdio/stdin.cpp
@@ -10,6 +10,4 @@
 
 #include <stdio.h>
 
-extern "C" {
-FILE *stdin = reinterpret_cast<FILE *>(__llvm_libc::stdin);
-}
+extern "C" FILE *stdin;
diff --git a/libc/src/stdio/stdout.cpp b/libc/src/stdio/stdout.cpp
--- a/libc/src/stdio/stdout.cpp
+++ b/libc/src/stdio/stdout.cpp
@@ -10,6 +10,4 @@
 
 #include <stdio.h>
 
-extern "C" {
-FILE *stdout = reinterpret_cast<FILE *>(__llvm_libc::stdout);
-}
+extern "C" FILE *stdout;