include/xapian/version_h.cc

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// version_h.cc - template used by configure to generate xapian/version.h
// (for portability, files run through $CXXCPP must have extension .c .cc or .C)
#include <config.h>
const char * dummy[] = {
"/** @file version.h",
" * @brief Define preprocesor symbols for the library version",
" */",
"// Copyright (C) 2002,2004,2005,2006,2007,2008,2009,2010 Olly Betts",
"//",
"// This program is free software; you can redistribute it and/or",
"// modify it under the terms of the GNU General Public License as",
"// published by the Free Software Foundation; either version 2 of the",
"// License, or (at your option) any later version.",
"//",
"// This program is distributed in the hope that it will be useful,",
"// but WITHOUT ANY WARRANTY; without even the implied warranty of",
"// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the",
"// GNU General Public License for more details.",
"//",
"// You should have received a copy of the GNU General Public License",
"// along with this program; if not, write to the Free Software",
"// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA",
"",
"#ifndef XAPIAN_INCLUDED_VERSION_H",
"#define XAPIAN_INCLUDED_VERSION_H",
#ifdef __GNUC__
// When building the library with GCC, generate preprocessor code to check that
// any version of GCC used to build applications has a matching C++ ABI. This
// means that users get a nice explanatory error message rather than a
// confusing link failure (or worse a program which builds but crashes).
// Another benefit is that the check happens near the start of compilation of
// the first source file which uses Xapian in the user's application, rather
// than during the first attempt to link with Xapian.
//
// We also check that the setting of _GLIBCXX_DEBUG matches since that
// introduces ABI-like incompatibilities.
//
// After preprocessing with "g++ -E" or similar (which will expand macros,
// strip comments such as this block, etc) we remove lines starting with a
// '#', remove blank lines, and collapse multiple spaces.  And we strip out
// double quotes, then replace '@@' with '"', and drop ',' at the end of a
// line (the purpose of the ',' is to prevent certain preprocessors from
// concatenating literal strings).
//
// So for lines we want in the output, we quote parts of the line which we
// don't want substituting, and use @@ where we really want " in the output.
#define V2(A,B) J2(A,B)
#define J2(A,B) g++ A##.##B
#define V3(A,B,C) J3(A,B,C)
#define J3(A,B,C) g++ A##.##B##.##C
"",
"#ifdef __GNUC__",
"#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ == 0)",
"#error Xapian no longer supports GCC < 3.1",
"#else",
#ifndef __GXX_ABI_VERSION
#error GCC does not have __GXX_ABI_VERSION defined
#endif
// GCC 3.1 reports ABI version 100 (same as 3.0), but this should actually have
// been 101!  But we reject 3.0 above, so this doesn't actually matter.
"#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION != ",__GXX_ABI_VERSION,
"#error The C++ ABI version of compiler you are using does not match",
"#error that of the compiler used to build the library.  The versions",
"#error must match or your program will not work correctly.",
#ifdef __GNUC_PATCHLEVEL__
"#error The Xapian library was built with ",V3(__GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__),
#else
"#error The Xapian library was built with ",V2(__GNUC__,__GNUC_MINOR__),
#endif
"#endif",
"",
// _GLIBCXX_DEBUG is supported by GCC 3.4 and later so we only need to check
// it for those versions.
#if (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __GNUC__ >= 4
#ifdef _GLIBCXX_DEBUG
"#ifndef _GLIBCXX_DEBUG",
"#error This library was compiled with _GLIBCXX_DEBUG defined, but you",
"#error have not specified this flag.  The settings must match or your",
"#error program will not work correctly.",
"#endif",
#else
"#ifdef _GLIBCXX_DEBUG",
"#error You are compiling with _GLIBCXX_DEBUG defined, but the library",
"#error was not compiled with this flag.  The settings must match or your",
"#error program will not work correctly.",
"#endif",
#endif
#endif
"#endif",
"#endif",
"",
#endif
#ifdef XAPIAN_ENABLE_VISIBILITY
"/// The library was compiled with GCC's -fvisibility=hidden option.",
"#define XAPIAN_ENABLE_VISIBILITY",
"",
#endif
"/// The version of Xapian as a C string literal.",
"#define XAPIAN_VERSION ",STRING_VERSION,
"",
"/** The major component of the Xapian version.",
" *  E.g. for Xapian 1.0.14 this would be: 1",
" */",
"#define XAPIAN_MAJOR_VERSION ",MAJOR_VERSION,
"",
"/** The minor component of the Xapian version.",
" *  E.g. for Xapian 1.0.14 this would be: 0",
" */",
"#define XAPIAN_MINOR_VERSION ",MINOR_VERSION,
"",
"/** The revision component of the Xapian version.",
" *  E.g. for Xapian 1.0.14 this would be: 14",
" */",
"#define XAPIAN_REVISION ",REVISION,
"",
"/// XAPIAN_HAS_BRASS_BACKEND Defined if the brass backend is enabled.",
#ifdef XAPIAN_HAS_BRASS_BACKEND
"#define XAPIAN_HAS_BRASS_BACKEND 1",
#else
"/* #undef XAPIAN_HAS_BRASS_BACKEND */",
#endif
"",
"/// XAPIAN_HAS_CHERT_BACKEND Defined if the chert backend is enabled.",
#ifdef XAPIAN_HAS_CHERT_BACKEND
"#define XAPIAN_HAS_CHERT_BACKEND 1",
#else
"/* #undef XAPIAN_HAS_CHERT_BACKEND */",
#endif
"",
"/// XAPIAN_HAS_FLINT_BACKEND Defined if the flint backend is enabled.",
#ifdef XAPIAN_HAS_FLINT_BACKEND
"#define XAPIAN_HAS_FLINT_BACKEND 1",
#else
"/* #undef XAPIAN_HAS_FLINT_BACKEND */",
#endif
"",
"/// XAPIAN_HAS_INMEMORY_BACKEND Defined if the inmemory backend is enabled.",
#ifdef XAPIAN_HAS_INMEMORY_BACKEND
"#define XAPIAN_HAS_INMEMORY_BACKEND 1",
#else
"/* #undef XAPIAN_HAS_INMEMORY_BACKEND */",
#endif
"",
"/// XAPIAN_HAS_REMOTE_BACKEND Defined if the remote backend is enabled.",
#ifdef XAPIAN_HAS_REMOTE_BACKEND
"#define XAPIAN_HAS_REMOTE_BACKEND 1",
#else
"/* #undef XAPIAN_HAS_REMOTE_BACKEND */",
#endif
"",
"#endif /* XAPIAN_INCLUDED_VERSION_H */"
};

---