7f1d08d5bd
Checking for the exact match of __GXX_ABI_VERSION created more problems (including for both Fedora and Debian packagers, see https://github.com/wxWidgets/wxWidgets/pull/828) than it solved (approximately 0), so relax it and assume that future g++ versions will remain broadly compatible with the current ABI, which seems like a safe assumption so far. It's not really clear if there is any value in having this ABI check at all, or if we should remove CheckBuildOptions() and all the code calling it entirely, as it seems that there is no way to trigger this check during run-time without getting a link error first. But keep it for now, just because it's simpler to keep it than to remove it.
137 lines
5.4 KiB
C
137 lines
5.4 KiB
C
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/build.h
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// Purpose: Runtime build options checking
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// Author: Vadim Zeitlin, Vaclav Slavik
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// Modified by:
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// Created: 07.05.02
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// Copyright: (c) 2002 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_BUILD_H_
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#define _WX_BUILD_H_
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#include "wx/version.h"
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// NB: This file contains macros for checking binary compatibility of libraries
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// in multilib builds, plugins and user components.
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// The WX_BUILD_OPTIONS_SIGNATURE macro expands into string that should
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// uniquely identify binary compatible builds: i.e. if two builds of the
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// library are binary compatible, their signature string should be the
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// same; if two builds are binary incompatible, their signatures should
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// be different.
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//
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// Therefore, wxUSE_XXX flags that affect binary compatibility (vtables,
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// function signatures) should be accounted for here. So should compilers
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// and compiler versions (but note that binary compatible compiler versions
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// such as gcc-2.95.2 and gcc-2.95.3 should have same signature!).
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// ----------------------------------------------------------------------------
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// WX_BUILD_OPTIONS_SIGNATURE
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// ----------------------------------------------------------------------------
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#define __WX_BO_STRINGIZE(x) __WX_BO_STRINGIZE0(x)
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#define __WX_BO_STRINGIZE0(x) #x
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#if (wxMINOR_VERSION % 2) == 0
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#define __WX_BO_VERSION(x,y,z) \
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__WX_BO_STRINGIZE(x) "." __WX_BO_STRINGIZE(y)
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#else
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#define __WX_BO_VERSION(x,y,z) \
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__WX_BO_STRINGIZE(x) "." __WX_BO_STRINGIZE(y) "." __WX_BO_STRINGIZE(z)
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#endif
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#if wxUSE_UNICODE_UTF8
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#define __WX_BO_UNICODE "UTF-8"
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#elif wxUSE_UNICODE_WCHAR
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#define __WX_BO_UNICODE "wchar_t"
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#else
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#define __WX_BO_UNICODE "ANSI"
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#endif
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// GCC and Intel C++ share same C++ ABI (and possibly others in the future),
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// check if compiler versions are compatible:
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#if defined(__GXX_ABI_VERSION)
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// All the changes since ABI version 1002 so far have been insignificant,
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// so just check for this value, first used for g++ 3.4 and used by default
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// by all g++ 4 versions, as checking for the exact ABI version simply
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// results in run-time breakage whenever a new gcc version is released,
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// even if there are no real problems.
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#if __GXX_ABI_VERSION >= 1002
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#define __WX_BO_COMPILER \
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",compiler with C++ ABI compatible with gcc 4"
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#else
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#define __WX_BO_COMPILER \
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",compiler with C++ ABI " __WX_BO_STRINGIZE(__GXX_ABI_VERSION)
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#endif
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#elif defined(__GNUG__)
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#define __WX_BO_COMPILER ",GCC " \
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__WX_BO_STRINGIZE(__GNUC__) "." __WX_BO_STRINGIZE(__GNUC_MINOR__)
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#elif defined(__VISUALC__)
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// VC15 (a.k.a. MSVS 2017) is ABI-compatible with VC14 (MSVS 2015), so use
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// the same ABI version for both of them.
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#if _MSC_VER >= 1900 && _MSC_VER < 2000
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#define wxMSVC_ABI_VERSION 1900
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#else
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#define wxMSVC_ABI_VERSION _MSC_VER
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#endif
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#define __WX_BO_COMPILER ",Visual C++ " __WX_BO_STRINGIZE(wxMSVC_ABI_VERSION)
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#elif defined(__INTEL_COMPILER)
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// Notice that this must come after MSVC check as ICC under Windows is
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// ABI-compatible with the corresponding version of the MSVC and we want to
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// allow using it compile the application code using MSVC-built DLLs.
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#define __WX_BO_COMPILER ",Intel C++"
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#elif defined(__BORLANDC__)
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#define __WX_BO_COMPILER ",Borland C++"
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#else
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#define __WX_BO_COMPILER
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#endif
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// WXWIN_COMPATIBILITY macros affect presence of virtual functions
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#if WXWIN_COMPATIBILITY_2_8
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#define __WX_BO_WXWIN_COMPAT_2_8 ",compatible with 2.8"
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#else
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#define __WX_BO_WXWIN_COMPAT_2_8
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#endif
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#if WXWIN_COMPATIBILITY_3_0
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#define __WX_BO_WXWIN_COMPAT_3_0 ",compatible with 3.0"
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#else
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#define __WX_BO_WXWIN_COMPAT_3_0
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#endif
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// deriving wxWin containers from STL ones changes them completely:
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#if wxUSE_STD_CONTAINERS
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#define __WX_BO_STL ",STL containers"
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#else
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#define __WX_BO_STL ",wx containers"
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#endif
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// This macro is passed as argument to wxAppConsole::CheckBuildOptions()
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#define WX_BUILD_OPTIONS_SIGNATURE \
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__WX_BO_VERSION(wxMAJOR_VERSION, wxMINOR_VERSION, wxRELEASE_NUMBER) \
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" (" __WX_BO_UNICODE \
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__WX_BO_COMPILER \
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__WX_BO_STL \
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__WX_BO_WXWIN_COMPAT_2_8 __WX_BO_WXWIN_COMPAT_3_0 \
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")"
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// ----------------------------------------------------------------------------
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// WX_CHECK_BUILD_OPTIONS
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// ----------------------------------------------------------------------------
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// Use this macro to check build options. Adding it to a file in DLL will
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// ensure that the DLL checks build options in same way wxIMPLEMENT_APP() does.
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#define WX_CHECK_BUILD_OPTIONS(libName) \
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static struct wxBuildOptionsChecker \
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{ \
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wxBuildOptionsChecker() \
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{ \
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wxAppConsole::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, \
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libName); \
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} \
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} gs_buildOptionsCheck;
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#endif // _WX_BUILD_H_
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