On Tue, Oct 15, 2019 at 02:30:48PM -0700, Yi-Hung Wei wrote: > It is possible that user install libunwind but not libunwind-devel, > and it will run into a compilation error. So check the existence > of the header file instead of the library. > > Fixes: e2ed6fbeb18c ("fatal-signal: Catch SIGSEGV and print backtrace.") > Signed-off-by: Yi-Hung Wei <yihung....@gmail.com> > --- > m4/openvswitch.m4 | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4 > index 79e0be5a33dd..da7119951484 100644 > --- a/m4/openvswitch.m4 > +++ b/m4/openvswitch.m4 > @@ -640,7 +640,7 @@ AC_DEFUN([OVS_CHECK_UNBOUND], > > dnl Checks for libunwind. > AC_DEFUN([OVS_CHECK_UNWIND], > - [AC_CHECK_LIB(unwind, unw_backtrace, [HAVE_UNWIND=yes], [HAVE_UNWIND=no]) > + [AC_CHECK_HEADERS([libunwind.h], [HAVE_UNWIND=yes], [HAVE_UNWIND=no])
It might be wise to check for both, e.g.: AC_CHECK_LIB([unwind], [unw_backtrace], [AC_CHECK_HEADERS([libunwind.h], [HAVE_UNWIND=yes], [HAVE_UNWIND=no])], [HAVE_UNWIND=no]) _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev