diff options
Diffstat (limited to 'include/iprt/linux/symvers.h')
| -rw-r--r-- | include/iprt/linux/symvers.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/iprt/linux/symvers.h b/include/iprt/linux/symvers.h new file mode 100644 index 00000000..8fb96d97 --- /dev/null +++ b/include/iprt/linux/symvers.h @@ -0,0 +1,76 @@ +/** @file + * IPRT - Linux symver and compatibility definitions. + */ + +/* + * Copyright (C) 2008-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +/* Various tricks to produce binaries which can be run on old Linux + * distributions. This will almost certainly need updating as time + * goes by. */ + +#ifndef IPRT_INCLUDED_linux_symvers_h +#define IPRT_INCLUDED_linux_symvers_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +/* Please use -fno-stack-protector on the command line to avoid stack check + * functions which are not available in EL3 for 32-bit builds. */ + +/* Use versions of glibc symbols which are available in 32-bit EL3 or + * 64-bit EL4. Currently only those symbols needed by the Additions, + * though this could probably be extended to work for host builds too. */ +#if defined(RT_ARCH_AMD64) +__asm__(".symver memcpy,memcpy@GLIBC_2.2.5"); +__asm__(".symver posix_spawn,posix_spawn@GLIBC_2.2.5"); +#else /* RT_ARCH_X86 */ +__asm__(".symver posix_spawn,posix_spawn@GLIBC_2.2"); +#endif + +/* Do not use *_chk functions */ +#undef _FORTIFY_SOURCE + +/* Do not use __isoc99_* functions */ +#undef __USE_GNU +#define __USE_GNU 1 + +/* And EL5 wants this too with __USE_GNU */ +#undef _GNU_SOURCE +#define _GNU_SOURCE 1 + +/* Tell IPRT not to use newer functions */ +#include <features.h> +#undef __GLIBC_MINOR__ +#define __GLIBC_MINOR__ 3 + +/* Do not use fcntl64 */ +#include <fcntl.h> +#ifdef fnctl +# undef fcntl +#endif +#if defined(RT_ARCH_AMD64) +__asm__(".symver fcntl64,fcntl@GLIBC_2.2.5"); +#else +__asm__(".symver fcntl64,fcntl@GLIBC_2.0"); +#endif + +#endif /* !IPRT_INCLUDED_linux_symvers_h */ |