Hello there! I'm using automake+libtool for building C++ code and hitting a
peculiar issue with 3rd-party libraries. It comes up when a library is
built with one version of GCC and then the application is built with a
newer compler.
So, given the following wrapper lib that pulls libzmq:
noinst_LT
...and I have figured out the source of the mystery linker flags: zmq build
leaves libzmq.la file which contains this:
# Libraries that this one depends upon.
dependency_libs=' -lrt -lpthread /opt/gcc-10/lib/../lib64/libstdc++.la'
It looks like automake/libtool finds this file (BTW, when is it fo
On Tue, 29 Jun 2021, Oleg Smolsky wrote:
It looks like GCC9 references come from libzmq:
$ ldd /opt/3p/lib/libzmq.so | grep libstd
libstdc++.so.6 => /opt/gcc-9/lib/../lib64/libstdc++.so.6
(0x7f95f8d9f000)
Obviously the 3rd-party library was built a while ago with GCC9. At the
time i
On Tue, 29 Jun 2021, Oleg Smolsky wrote:
...and I have figured out the source of the mystery linker flags: zmq build
leaves libzmq.la file which contains this:
# Libraries that this one depends upon.
dependency_libs=' -lrt -lpthread /opt/gcc-10/lib/../lib64/libstdc++.la'
It looks like automake
On Tue, Jun 29, 2021 at 3:22 PM Bob Friesenhahn <
bfrie...@simple.dallas.tx.us> wrote:
> On Tue, 29 Jun 2021, Oleg Smolsky wrote:
> >
> > It looks like GCC9 references come from libzmq:
> >
> > $ ldd /opt/3p/lib/libzmq.so | grep libstd
> >libstdc++.so.6 => /opt/gcc-9/lib/../lib64/libstdc++
On Tue, Jun 29, 2021 at 3:30 PM Bob Friesenhahn <
bfrie...@simple.dallas.tx.us> wrote:
> On Tue, 29 Jun 2021, Oleg Smolsky wrote:
>
> > ...and I have figured out the source of the mystery linker flags: zmq
> build
> > leaves libzmq.la file which contains this:
> >
> > # Libraries that this one dep
