Streamline SIMD targets in media.gyp

media/base/simd/media_export.asm

Index: media/base/simd/media_export.asm
diff --git a/media/base/simd/media_export.asm b/media/base/simd/media_export.asm
new file mode 100644
index 0000000000000000000000000000000000000000..e82be8d7f9d7bd1624f41505ef1e3de9e6fcb5b8
--- /dev/null
+++ b/media/base/simd/media_export.asm
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+; Copyright 2013 The Chromium Authors. All rights reserved.
+; Use of this source code is governed by a BSD-style license that can be
+; found in the LICENSE file.
+;
+; A set of helper macros for controlling symbol visibility.
+;
+
+%ifndef MEDIA_BASE_SIMD_MEDIA_EXPORT_ASM_
+%define MEDIA_BASE_SIMD_MEDIA_EXPORT_ASM_
+
+; Necessary for the mangle() macro.
+%include "third_party/x86inc/x86inc.asm"
+
+;
+; PRIVATE
+; A flag representing the specified symbol is a private symbol. This define adds
+; a hidden flag on Linux and a private_extern flag on Mac. (We can use this
+; private_extern flag only on the latest yasm.)
+;
+%ifdef MACHO
+%define PRIVATE :private_extern
+%elifdef ELF
+%define PRIVATE :hidden
+%else
+%define PRIVATE
+%endif
+
+;
+; EXPORT %1
+; Designates a symbol as PRIVATE if EXPORT_SYMBOLS is not set.
+;
+%macro EXPORT 1
+%ifdef EXPORT_SYMBOLS
+global mangle(%1)
+
+; Windows needs an additional export declaration.
+%ifidn __OUTPUT_FORMAT__,win32
+export mangle(%1)
+%elifidn __OUTPUT_FORMAT__,win64
+export mangle(%1)
+%endif
+
+%else
+global mangle(%1) PRIVATE
+%endif
+%endmacro
+
+%endif  ; MEDIA_BASE_SIMD_MEDIA_EXPORT_ASM_