configure: fix LTTng UST tracing backend detection

The detection program needs to be linked with -ldl to build succesfully
with recent versions of LTTng-UST.

We also need to add -ldl to the libs required to build the LTTng-UST
backend (lttng_ust_libs).

Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Message-id: 1480348337-24271-1-git-send-email-francis.deslauriers@efficios.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Francis Deslauriers 2016-11-28 10:52:17 -05:00 committed by Stefan Hajnoczi
parent 00227fefd2
commit c79ed23df5

4
configure vendored
View File

@ -4305,11 +4305,11 @@ if have_backend "ust"; then
#include <lttng/tracepoint.h>
int main(void) { return 0; }
EOF
if compile_prog "" "" ; then
if compile_prog "" "-Wl,--no-as-needed -ldl" ; then
if $pkg_config lttng-ust --exists; then
lttng_ust_libs=$($pkg_config --libs lttng-ust)
else
lttng_ust_libs="-llttng-ust"
lttng_ust_libs="-llttng-ust -ldl"
fi
if $pkg_config liburcu-bp --exists; then
urcu_bp_libs=$($pkg_config --libs liburcu-bp)