From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IkdYT-0004VS-4l for qemu-devel@nongnu.org; Wed, 24 Oct 2007 06:33:41 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IkdYP-0004Uo-Qm for qemu-devel@nongnu.org; Wed, 24 Oct 2007 06:33:40 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IkdYP-0004Ul-Iq for qemu-devel@nongnu.org; Wed, 24 Oct 2007 06:33:37 -0400 Received: from bangui.magic.fr ([195.154.194.245]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1IkdYO-0000Ir-GP for qemu-devel@nongnu.org; Wed, 24 Oct 2007 06:33:37 -0400 Subject: Re: [Qemu-devel] qemu-2007-10-24 build error From: "J. Mayer" In-Reply-To: <20071024003602.0000F11F01F20261@mail6.dreamwiz.com> References: <20071024003602.0000F11F01F20261@mail6.dreamwiz.com> Content-Type: text/plain; charset=UTF-8 Date: Wed, 24 Oct 2007 12:33:24 +0200 Message-Id: <1193222005.16781.225.camel@rapid> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: hys545@dreamwiz.com On Wed, 2007-10-24 at 09:36 +0900, Hwang YunSong(=ED=99=A9=EC=9C=A4=EC=84= =B1) wrote: >=20 > gcc32 -g -o qemu-system-cris vl.o osdep.o readline.o monitor.o pci.o > console.o loader.o isa_mmio.o cutils.o block.o block-raw.o block-cow.o > block-qcow.o aes.o block-vmdk.o block-cloop.o block-dmg.o > block-bochs.o block-vpc.o block-vvfat.o block-qcow2.o > block-parallels.o irq.o i2c.o smbus.o scsi-disk.o cdrom.o lsi53c895a.o > usb.o usb-hub.o usb-linux.o usb-hid.o usb-ohci.o usb-msd.o usb-wacom.o > eeprom93xx.o eepro100.o ne2000.o pcnet.o rtl8139.o etraxfs.o ptimer.o > etraxfs_timer.o etraxfs_ser.o gdbstub.o sdl.o x_keymap.o vnc.o d3des.o > slirp/cksum.o slirp/if.o slirp/ip_icmp.o slirp/ip_input.o > slirp/ip_output.o slirp/slirp.o slirp/mbuf.o slirp/misc.o slirp/sbuf.o > slirp/socket.o slirp/tcp_input.o slirp/tcp_output.o slirp/tcp_subr.o > slirp/tcp_timer.o slirp/udp.o slirp/bootp.o slirp/debug.o slirp/tftp.o > libqemu.a -lm -lz -lgnutls -L/usr/lib -lSDL -lpthread -lrt -lutil=20 > libqemu.a(helper.o): In function `do_interrupt':=20 > /usr/src/Haansoft/BUILD/qemu/target-cris/helper.c:137: undefined > reference to `__builtin_clz'=20 > libqemu.a(translate-op.o): In function `dyngen_code':=20 > /home/hys545/qemu/cris-softmmu/op.h:1566: undefined reference to > `__builtin_clz'=20 > libqemu.a(op.o): In function `op_lz_T0_T1':=20 > /usr/src/Haansoft/BUILD/qemu/target-cris/op.c:1009: undefined > reference to `__builtin_clz'=20 > collect2: ld returned 1 exit status=20 It does not seem to be a good idea, imho, to use gcc builtins directly from micro-ops. But your compiler should implement __builtin_clz. As far as I can see, the 4.1.1 version I got (Gentoo distribution) has this builtin implemented, then there might be a problem in your gcc package. I used this little program to check the builtin presence and found no version from gcc 3.4.4 to gcc 4.2.2 without __builtin_clz implemented: int a =3D 123456; int main (void) { int b; b =3D __builtin_clz(a); return b; } Compiled with gcc- -O2 -Wall -W -o /tmp/clz /tmp/ckz.c [...] --=20 J. Mayer Never organized