Re: [libvirt] [PATCH] build: fix linking libqemutestdriver with LTO enabled

On 5/29/19 7:44 PM, Jim Fehlig wrote: > openSUSE Factory is in the process of enabling Link Time Optimization [0] > and stumbled upon missing symbols when linking libqemutestdriver > > libtool: link: gcc -shared  -fPIC -DPIC  ../src/libvirt_qemu_probes.o  \ > -Wl,--whole-archive ../src/.libs/libvirt_driver_qemu_impl.a \ > ../src/.libs/libvirt_driver_network_impl.a \ > ../src/.libs/libvirt_driver_storage_impl.a -Wl,--no-whole-archive  \ > -lcap-ng -lgnutls -lnl-route-3 -lnl-3 -ldbus-1 -lselinux -lapparmor \ > /usr/lib/libxml2.so -ldl -lz -llzma -lm -lblkid -ltirpc  \ > -fstack-protector-strong -O2 -fstack-protector-strong -flto=16 -g -O2 \ > -fstack-protector-strong -flto=16 -g \ > -Wl,-soname -Wl,libqemutestdriver.so -o .libs/libqemutestdriver.so > ... > /usr/lib/gcc/i586-suse-linux/9/../../../../i586-suse-linux/bin/ld: > ./.libs/libqemutestdriver.so: undefined reference to `mdir_name' > /usr/lib/gcc/i586-suse-linux/9/../../../../i586-suse-linux/bin/ld: > ./.libs/libqemutestdriver.so: undefined reference to `rpl_ioctl' > /usr/lib/gcc/i586-suse-linux/9/../../../../i586-suse-linux/bin/ld: > ./.libs/libqemutestdriver.so: undefined reference to `rpl_pipe2' > /usr/lib/gcc/i586-suse-linux/9/../../../../i586-suse-linux/bin/ld: > ./.libs/libqemutestdriver.so: undefined reference to `recvfd' > /usr/lib/gcc/i586-suse-linux/9/../../../../i586-suse-linux/bin/ld: > ./.libs/libqemutestdriver.so: undefined reference to `c_strcasecmp' > > The missing symbols are provided by GNUlib. Add it when linking > libqemutestdriver. > > [0] https://en.opensuse.org/openSUSE:LTO > > Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; > --- >   tests/Makefile.am | 4 ++-- >   1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/tests/Makefile.am b/tests/Makefile.am > index 46d94d2236..1d80647c9f 100644 > --- a/tests/Makefile.am > +++ b/tests/Makefile.am > @@ -557,7 +557,7 @@ endif WITH_DTRACE_PROBES >   libqemutestdriver_la_SOURCES = >   libqemutestdriver_la_LDFLAGS = $(DRIVERLIB_LDFLAGS) > -libqemutestdriver_la_LIBADD = $(qemu_LDADDS) > +libqemutestdriver_la_LIBADD = $(qemu_LDADDS) $(GNULIB_LIBS) >   qemucpumock_la_SOURCES = \ >       qemucpumock.c testutilshostcpus.h ACK and safe for freeze to this hunk. Alternatively, we might go with $(LDADDS) which includes $(GNULIB_LIBS).

> @@ -729,7 +729,7 @@ lxcconf2xmltest_SOURCES = \ >   lxcconf2xmltest_LDADD = $(lxc_LDADDS) >   else ! WITH_LXC >   EXTRA_DIST += lxcxml2xmltest.c testutilslxc.c testutilslxc.h > -endif ! WITH_LXC > +-endif ! WITH_LXC >   if WITH_OPENVZ >   openvzutilstest_SOURCES = \ > Not so for this one ;-)