kc3-lang/angle/include/export.h

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• Hash : a79c2440
  Author :
  Date : 2019-07-29T11:34:21
  

  Make libEGL function pointers hidden in symbol table
  
  The libEGL_angle.so and libGLESv2_angle.so libraries are typically
  loaded into the same process each time, so we need to make sure there
  aren't any duplicated symbols which could violate ODR and lead to
  crashes or undefined behavior.   In this case, the libEGL_angle.so
  function pointer names were colliding with libGLESv2_angle.so function
  names, causing crashes at runtime.   The fix here is to mark the
  libEGL_angle.so function pointer symbols 'hidden', so they don't appear
  in the symbol table for other executables/libraries to see and can't be
  overridden by other symbols.
  
  Bug: angleproject:3751
  Test: Embed ANGLE within dEQP.apk and verify no crashes
  Change-Id: Ibb78369374a4a68b3489a7dd7775c52e29fa37e0
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1724909
  Commit-Queue: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• include/export.h

• //
  // Copyright(c) 2014 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // export.h : Defines ANGLE_EXPORT, a macro for exporting functions from the DLL
  
  #ifndef LIBGLESV2_EXPORT_H_
  #define LIBGLESV2_EXPORT_H_
  
  #if !defined(ANGLE_EXPORT)
  #    if defined(_WIN32)
  #        if defined(LIBGLESV2_IMPLEMENTATION) || defined(LIBANGLE_IMPLEMENTATION) || \
              defined(LIBFEATURE_SUPPORT_IMPLEMENTATION)
  #            define ANGLE_EXPORT __declspec(dllexport)
  #        else
  #            define ANGLE_EXPORT __declspec(dllimport)
  #        endif
  #    elif defined(__GNUC__)
  #        if defined(LIBGLESV2_IMPLEMENTATION) || defined(LIBANGLE_IMPLEMENTATION) || \
              defined(LIBFEATURE_SUPPORT_IMPLEMENTATION)
  #            define ANGLE_EXPORT __attribute__((visibility("default")))
  #        else
  #            define ANGLE_EXPORT
  #        endif
  #    else
  #        define ANGLE_EXPORT
  #    endif
  #endif  // !defined(ANGLE_EXPORT)
  
  #if !defined(ANGLE_NO_EXPORT)
  #    if defined(__GNUC__)
  #        define ANGLE_NO_EXPORT __attribute__((visibility("hidden")))
  #    else
  #        define ANGLE_NO_EXPORT
  #    endif
  #endif  // !defined(ANGLE_NO_EXPORT)
  
  #endif  // LIBGLESV2_EXPORT_H_
  

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