From owner-freebsd-stable@FreeBSD.ORG Wed Aug 24 13:01:50 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 91BC31065673 for ; Wed, 24 Aug 2011 13:01:50 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 0D1B98FC14 for ; Wed, 24 Aug 2011 13:01:49 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id p7OD1gaj048817 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 24 Aug 2011 16:01:42 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id p7OD1gJx065214; Wed, 24 Aug 2011 16:01:42 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id p7OD1g4w065213; Wed, 24 Aug 2011 16:01:42 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 24 Aug 2011 16:01:42 +0300 From: Kostik Belousov To: Tom Evans Message-ID: <20110824130142.GO17489@deviant.kiev.zoral.com.ua> References: <201103092015.p29KFd0U077849@dave.dignus.com> <1314084403216-4725801.post@n5.nabble.com> <201108241311.11319.benzene@arcor.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gzCQSLRtB/T+Q+ea" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-3.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-stable@freebsd.org, Michael Hoffmann Subject: Re: -m32 on freeBSD 8.2r amd64 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Aug 2011 13:01:50 -0000 --gzCQSLRtB/T+Q+ea Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 24, 2011 at 01:57:02PM +0100, Tom Evans wrote: > On Wed, Aug 24, 2011 at 12:11 PM, Michael Hoffmann wro= te: > > Maybe off topic? > > > > 1: echo "int main(void) { return 0; }" > t.c > > > > 2: setenv LDEMULATION elf_i386_fbsd > > > > 3: gcc -c -m32 -o t.o t.c > > > > 4: gcc -nostartfiles -o a.out > > t.o -L/usr/lib32 /usr/lib32/crt1.o /usr/lib32/crti.o > > > > 5: file a.out > > a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), > > dynamically linked (uses shared libs), for FreeBSD 8.2, not stripped > > > > 6: uname -m > > amd64 > > > > 2: q.v. info binutils -> Selecting The Target System > > > > Maybe there is a more comfortable way. > > Michael > > >=20 > You don't need to go to all that effort: >=20 > $ uname -m > amd64 > $ echo "int main(void) { return 0; }" > t.c > $ gcc -c -m32 -o t.o t.c > $ gcc -m32 -o t t.o -B/usr/lib32 > $ file t > t: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), > dynamically linked (uses shared libs), for FreeBSD 8.2 (802510), not > stripped Well-known problem is that /usr/include/machine/*.h still contains amd64 arch definitions. The resulting binary is broken in the quite subtle ways. --gzCQSLRtB/T+Q+ea Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk5U9jYACgkQC3+MBN1Mb4gbJQCdEAEVzNoppt0KkUWbXWXb+aok VicAn3vDgk2hP3gnyz+VvpQ1ztjG2rC2 =NZYe -----END PGP SIGNATURE----- --gzCQSLRtB/T+Q+ea--