Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261710AbVE3T3R (ORCPT ); Mon, 30 May 2005 15:29:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261712AbVE3T3R (ORCPT ); Mon, 30 May 2005 15:29:17 -0400 Received: from mailout.stusta.mhn.de ([141.84.69.5]:61708 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S261710AbVE3T2m (ORCPT ); Mon, 30 May 2005 15:28:42 -0400 Date: Mon, 30 May 2005 21:28:36 +0200 From: Adrian Bunk To: Marcelo Tosatti Cc: linux-kernel@vger.kernel.org Subject: [2.4 patch] document that gcc 4 is not supported Message-ID: <20050530192835.GK10441@stusta.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2085 Lines: 57 gcc 4 is not supported for compiling kernel 2.4, and I don't see any compelling reason why kernel 2.4 should ever be adapted to gcc 4. This patch documents this fact. Signed-off-by: Adrian Bunk --- Documentation/Changes | 2 ++ README | 1 + init/main.c | 7 +++++++ 3 files changed, 10 insertions(+) --- linux-2.4.31-rc1-full/init/main.c.old 2005-05-30 21:20:00.000000000 +0200 +++ linux-2.4.31-rc1-full/init/main.c 2005-05-30 21:21:19.000000000 +0200 @@ -84,6 +84,13 @@ #error Sorry, your GCC is too old. It builds incorrect kernels. #endif +/* + * gcc >= 4 is not supported by kernel 2.4 + */ +#if __GNUC__ > 3 +#error Sorry, your GCC is too recent for kernel 2.4 +#endif + extern char _stext, _etext; extern char *linux_banner; --- linux-2.4.31-rc1-full/README.old 2005-05-30 21:21:29.000000000 +0200 +++ linux-2.4.31-rc1-full/README 2005-05-30 21:21:59.000000000 +0200 @@ -152,6 +152,7 @@ - Make sure you have gcc 2.95.3 available. gcc 2.91.66 (egcs-1.1.2) may also work but is not as safe, and *gcc 2.7.2.3 is no longer supported*. + gcc 4 is *not* supported. Also remember to upgrade your binutils package (for as/ld/nm and company) if necessary. For more information, refer to ./Documentation/Changes. --- linux-2.4.31-rc1-full/Documentation/Changes.old 2005-05-30 21:22:10.000000000 +0200 +++ linux-2.4.31-rc1-full/Documentation/Changes 2005-05-30 21:22:41.000000000 +0200 @@ -91,6 +91,8 @@ You should ensure you use gcc-2.96-74 or later. gcc-2.96-54 will not build the kernel correctly. +gcc 4 is not supported. + In addition, please pay attention to compiler optimization. Anything greater than -O2 may not be wise. Similarly, if you choose to use gcc-2.95.x or derivatives, be sure not to use -fstrict-aliasing (which, depending on - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/