diff --git a/linker/linker_globals.h b/linker/linker_globals.h
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+++ b/linker/linker_globals.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __LINKER_GLOBALS_H
+#define __LINKER_GLOBALS_H
+
+#include <link.h>
+#include <stddef.h>
+
+#include <unordered_map>
+
+#define DL_ERR(fmt, x...) \
+    do { \
+      __libc_format_buffer(linker_get_error_buffer(), linker_get_error_buffer_size(), fmt, ##x); \
+      /* If LD_DEBUG is set high enough, log every dlerror(3) message. */ \
+      LD_LOG(kLogErrors, "%s\n", linker_get_error_buffer()); \
+    } while (false)
+
+#define DL_WARN(fmt, x...) \
+    do { \
+      __libc_format_log(ANDROID_LOG_WARN, "linker", fmt, ##x); \
+      __libc_format_fd(2, "WARNING: linker: "); \
+      __libc_format_fd(2, fmt, ##x); \
+      __libc_format_fd(2, "\n"); \
+    } while (false)
+
+constexpr ElfW(Versym) kVersymNotNeeded = 0;
+constexpr ElfW(Versym) kVersymGlobal = 1;
+
+// These values are used to call constructors for .init_array && .preinit_array
+extern int g_argc;
+extern char** g_argv;
+extern char** g_envp;
+
+struct soinfo;
+struct android_namespace_t;
+
+extern android_namespace_t g_default_namespace;
+
+extern std::unordered_map<uintptr_t, soinfo*> g_soinfo_handles_map;
+
+// Error buffer "variable"
+char* linker_get_error_buffer();
+size_t linker_get_error_buffer_size();
+
+#endif  /* __LINKER_GLOBALS_H */