OVS doesn't do anything special when it comes to arithmetic. I haven't heard of Clang having trouble with this before. You should probably make sure that these kinds of arithmetic operations work OK in trivial test cases with "clang -m32".
On Mon, Aug 19, 2019 at 09:09:49AM +0000, Sirvys, Andrius wrote: > Had a go at your suggestion, however exact same issue. > Included the full failure. > > lib/.libs/libopenvswitch.a(rconn.o): In function `llsat_mul': > rconn.c:(.text+0x3c0): undefined reference to `__mulodi4' > clang: error: linker command failed with exit code 1 (use -v to see > invocation) > Makefile:4623: recipe for target 'utilities/ovs-testcontroller' failed > make[2]: *** [utilities/ovs-testcontroller] Error 1 > make[2]: *** Waiting for unfinished jobs.... > lib/.libs/libopenvswitch.a(rconn.o): In function `llsat_mul': > rconn.c:(.text+0x3c0): undefined reference to `__mulodi4' > lib/.libs/libopenvswitch.a(rconn.o): In function `llsat_mul': > rconn.c:(.text+0x3c0): undefined reference to `__mulodi4' > clang: error: linker command failed with exit code 1 (use -v to see > invocation) > Makefile:4341: recipe for target 'ovn/controller/ovn-controller' failed > make[2]: *** [ovn/controller/ovn-controller] Error 1 > clang: error: linker command failed with exit code 1 (use -v to see > invocation) > Makefile:4653: recipe for target 'vswitchd/ovs-vswitchd' failed > make[2]: *** [vswitchd/ovs-vswitchd] Error 1 > tests/test-util.o: In function `llsat_mul': > test-util.c:(.text+0xd3f0): undefined reference to `__mulodi4' > clang: error: linker command failed with exit code 1 (use -v to see > invocation) > Makefile:4543: recipe for target 'tests/ovstest' failed > make[2]: *** [tests/ovstest] Error 1 > make[2]: Leaving directory '/root/ovsClang' > Makefile:6058: recipe for target 'all-recursive' failed > make[1]: *** [all-recursive] Error 1 > make[1]: Leaving directory '/root/ovsClang' > Makefile:3625: recipe for target 'all' failed > make: *** [all] Error 2 > > > Thanks again. > > > -----Original Message----- > > From: Ben Pfaff [mailto:b...@ovn.org] > > Sent: Friday, August 16, 2019 8:25 PM > > To: Sirvys, Andrius <andrius.sir...@intel.com> > > Cc: ovs-discuss@openvswitch.org > > Subject: Re: [ovs-discuss] Building OvS with clang 32bit - shared and not > > shared > > libraries > > > > On Tue, Aug 06, 2019 at 04:06:53PM +0000, Sirvys, Andrius wrote: > > > Hi. > > > > > > I'm trying to build 32 bit OvS using clang. It's on Ubuntu 18.04 LTS > > > I'm on commit a8f005cf26fd16f77133d67fe4b205409fc444db (HEAD -> > > > master, origin/master, origin/HEAD) > > > Author: John Hurley <john.hur...@netronome.com> > > > Date: Tue Jul 30 12:05:17 2019 +0100 > > > > > > > > > The configuration I'm using is > > > ./configure CC=clang --enable-Werror > > > --enable-ssl/--disable-ssl > > > make -j CFLAGS=-m32 > > > > > > > > > No matter if I build with shared libraries enabled or disabled I keep > > > running into > > the same issue > > > lib/.libs/libopenvswitch.a(rconn.o): In function `llsat_mul': > > > rconn.c:(.text+0x3c0): undefined reference to `__mulodi4' > > > > > > I'm thinking it could possibly be that this 32bit build is trying to link > > > with some > > 64bit library? Not exactly sure what's going on. > > > Would appreciate any advice or pointers on where to go or how to fix this. > > > > It's probably a bad idea to add CFLAGS that change the architecture after > > running "configure". Try adding CFLAGS=-m32 to the configure command line > > instead. _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
