Please open a issue at https://gitlab.isc.org/
> On 19 Jul 2021, at 07:19, Ed W <li...@wildgooses.com> wrote: > > Hi, I'm building a gentoo based system on arm v7 32bit, using musl as my > libc. I am hitting a compile error, that I have determined happens on 9.16.9 > onwards, yet I can build fine with 9.16.8 and earlier > > > > The specific error snippet I see is: > > armv7a-unknown-linux-musleabihf-gcc -O2 -pipe -march=armv7-a -mfpu=neon-vfpv4 > -mfloat-abi=hard -mno-unaligned-access -DDIG_SIGCHASE -pthread -fPIC -Wl,-O1 > -Wl,--as-needed -L/usr/lib -Wl,--export-dynamic -o sample-async \ > sample-async.o ../dns/libdns.a ../isccfg/libisccfg.a ../isc/libisc.a > -lcrypto -luv -ldl > /usr/lib/gcc/armv7a-unknown-linux-musleabihf/10.3.0/../../../../armv7a-unknown-linux-musleabihf/bin/ld: > ../isc/libisc.a(backtrace.o): in function `btcallback': > backtrace.c:(.text+0x50): undefined reference to `_Unwind_GetIP' > armv7a-unknown-linux-musleabihf-gcc -O2 -pipe -march=armv7-a -mfpu=neon-vfpv4 > -mfloat-abi=hard -mno-unaligned-access -DDIG_SIGCHASE -pthread -fPIC -Wl,-O1 > -Wl,--as-needed -L/usr/lib -Wl,--export-dynamic -o resolve \ > resolve.o ../irs/libirs.a ../dns/libdns.a ../isccfg/libisccfg.a > ../isc/libisc.a -lcrypto -luv -ldl > collect2: error: ld returned 1 exit status > make[1]: *** [Makefile:494: sample-gai] Error 1 > make[1]: *** Waiting for unfinished jobs.... > /usr/lib/gcc/armv7a-unknown-linux-musleabihf/10.3.0/../../../../armv7a-unknown-linux-musleabihf/bin/ld: > ../isc/libisc.a(backtrace.o): in function `btcallback': > backtrace.c:(.text+0x50): undefined reference to `_Unwind_GetIP' > collect2: error: ld returned 1 exit status > make[1]: *** [Makefile:502: sample-request] Error 1 > /usr/lib/gcc/armv7a-unknown-linux-musleabihf/10.3.0/../../../../armv7a-unknown-linux-musleabihf/bin/ld: > ../isc/libisc.a(backtrace.o): in function `btcallback': > backtrace.c:(.text+0x50): undefined reference to `_Unwind_GetIP' > collect2: error: ld returned 1 exit status > make[1]: *** [Makefile:490: sample-async] Error 1 > /usr/lib/gcc/armv7a-unknown-linux-musleabihf/10.3.0/../../../../armv7a-unknown-linux-musleabihf/bin/ld: > ../isc/libisc.a(backtrace.o): in function `btcallback': > backtrace.c:(.text+0x50): undefined reference to `_Unwind_GetIP' > collect2: error: ld returned 1 exit status > make[1]: *** [Makefile:486: resolve] Error 1 > > > > I think this is related to this change here: > > --- > /var/tmp/portage/net-dns/bind-tools-9.16.9/work/bind-9.16.9/lib/isc/backtrace.c > 2020-11-16 14:44:37.000000000 +0000 > +++ > /var/tmp/portage/net-dns/bind-tools-9.16.8/work/bind-9.16.8/lib/isc/backtrace.c > 2020-10-13 08:41:40.000000000 +0000 > @@ -40,7 +40,7 @@ > */ > #ifdef HAVE_LIBCTRACE > #define BACKTRACE_LIBC > -#elif defined(HAVE_UNWIND_BACKTRACE) > +#elif defined(__GNUC__) && (defined(__x86_64__) || defined(__ia64__)) > #define BACKTRACE_GCC > #elif defined(WIN32) > #define BACKTRACE_WIN32 > > > > If I revert this change then my compile succeeds (although it may not be > correct?) > > > > I'm not really skilled enough to understand the details of gcc backtrace > implementation on arm. I'm using gcc 10.3.0 to compile this, and I can see > that I have a header: > > /usr/lib/gcc/armv7a-unknown-linux-musleabihf/10.3.0/include/unwind.h > > So I'm assuming that I have gcc compiled with some kind of unwind > implementation? > > I use a very similar profile to compile near identical code base for both > amd64 and x86 architectures and both of those have no issues compiling latest > bind-tools (and previous). Also, near as I can see I have my gcc configured > identically across all three systems... > > > > Now I *can* compile bind-tools ok if I install the libunwind library, > however, that then breaks (re)compiling my gcc compiler, so I'm really > thinking that's the wrong route to go down? > > Temporarily I'm reverting the above change locally, but I wonder if you could > either guide me to a correct solution, or if someone more knowledgeable can > revert or write some correct #if test for this situation please? > > > > I'm sure I have failed to provide enough details at this stage. Please be > gentle... > > Thanks > > Ed W > > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
