On Tue, Oct 08, 2019 at 01:52:40PM +0200, Jiri Olsa wrote: > On Mon, Oct 07, 2019 at 10:41:20AM -0700, Andi Kleen wrote: > > From: Andi Kleen <a...@linux.intel.com> > > > > The symbol the feature file checks for is now actually in -lbabeltrace, > > not -lbabeltrace-ctf, at least as of libbabeltrace-1.5.6-2.fc30.x86_64 > > > > Always add both libraries to fix the feature detection. > > well, we link with libbabeltrace-ctf.so which links with libbabeltrace.so > > I guess we can link it as well, but where do you see it fail?
On FC30 the .so file is just a symlink, so it doesn't pull in the other library. $ gcc test-libbabeltrace.c -lbabeltrace-ctf /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libbabeltrace-ctf.so: undefined reference to `bt_packet_seek_get_error' /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libbabeltrace-ctf.so: undefined reference to `bt_packet_seek_set_error' collect2: error: ld returned 1 exit status $ ls -l /usr/lib64/libbabeltrace-ctf.so lrwxrwxrwx 1 root root 26 Jan 31 2019 /usr/lib64/libbabeltrace-ctf.so -> libbabeltrace-ctf.so.1.0.0 $ rpm -qf /usr/lib64/libbabeltrace-ctf.so libbabeltrace-devel-1.5.6-2.fc30.x86_64 -Andi
