config/gcc-stl-wrapper.template.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=8 et :
   3  */
   4 /* ***** BEGIN LICENSE BLOCK *****
   5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version
   8  * 1.1 (the "License"); you may not use this file except in compliance with
   9  * the License. You may obtain a copy of the License at:
  10  * http://www.mozilla.org/MPL/
  11  *
  12  * Software distributed under the License is distributed on an "AS IS" basis,
  13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  14  * for the specific language governing rights and limitations under the
  15  * License.
  16  *
  17  * The Original Code is Mozilla Code.
  18  *
  19  * The Initial Developer of the Original Code is
  20  *   The Mozilla Foundation
  21  * Portions created by the Initial Developer are Copyright (C) 2010
  22  * the Initial Developer. All Rights Reserved.
  23  *
  24  * Contributor(s):
  25  *   Chris Jones <jones.chris.g@gmail.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
  29  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
  31  * of those above. If you wish to allow use of your version of this file only
  32  * under the terms of either the GPL or the LGPL, and not to allow others to
  33  * use your version of this file under the terms of the MPL, indicate your
  34  * decision by deleting the provisions above and replace them with the notice
  35  * and other provisions required by the GPL or the LGPL. If you do not delete
  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #ifndef mozilla_${HEADER}_h
  42 #define mozilla_${HEADER}_h
  43
  44 // For some reason, Apple's GCC refuses to honor -fno-exceptions when
  45 // compiling ObjC.
  46 #if __EXCEPTIONS && !(__OBJC__ && __GNUC__ && XP_IOS)
  47 #  error "STL code can only be used with -fno-exceptions"
  48 #endif
  49
  50 // Silence "warning: #include_next is a GCC extension"
  51 #pragma GCC system_header
  52
  53 // mozalloc.h wants <new>; break the cycle by always explicitly
  54 // including <new> here.  NB: this is a tad sneaky.  Sez the gcc docs:
  55 //
  56 //    `#include_next' does not distinguish between <file> and "file"
  57 //    inclusion, nor does it check that the file you specify has the
  58 //    same name as the current file. It simply looks for the file
  59 //    named, starting with the directory in the search path after the
  60 //    one where the current file was found.
  61 #include_next <new>
  62
  63 // See if we're in code that can use mozalloc.  NB: this duplicates
  64 // code in nscore.h because nscore.h pulls in prtypes.h, and chromium
  65 // can't build with that being included before base/basictypes.h.
  66 #if !defined(XPCOM_GLUE) && !defined(NS_NO_XPCOM) && !defined(MOZ_NO_MOZALLOC)
  67 #  include "mozilla/mozalloc.h"
  68 #else
  69 #  error "STL code can only be used with infallible ::operator new()"
  70 #endif
  71
  72 #if defined(DEBUG) && !defined(_GLIBCXX_DEBUG)
  73 // Enable checked iterators and other goodies
  74 //
  75 // FIXME/bug 551254: gcc's debug STL implementation requires -frtti.
  76 // Figure out how to resolve this with -fno-rtti.  Maybe build with
  77 // -frtti in DEBUG builds?
  78 //
  79 //  # define _GLIBCXX_DEBUG 1
  80 #endif
  81
  82 #pragma GCC visibility push(default)
  83 #include_next <${HEADER}>
  84 #pragma GCC visibility pop
  85
  86 // gcc calls a __throw_*() function from bits/functexcept.h when it
  87 // wants to "throw an exception".  functexcept exists nominally to
  88 // support -fno-exceptions, but since we'll always use the system
  89 // libstdc++, and it's compiled with exceptions, then in practice
  90 // these __throw_*() functions will always throw exceptions (shades of
  91 // -fshort-wchar).  We don't want that and so define our own inlined
  92 // __throw_*().
  93 #ifndef mozilla_throw_gcc_h
  94 #  include "mozilla/throw_gcc.h"
  95 #endif
  96
  97 #endif  // if mozilla_${HEADER}_h