Allow inclusion of User Statically Defined Trace (USDT) probes in the OVS binaries using the --enable-usdt-probes option to the ./configure script.
Signed-off-by: Eelco Chaudron <[email protected]> --- v2: - Fixed option name in the commit message - Fixed help string (added space) configure.ac | 1 + m4/openvswitch.m4 | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/configure.ac b/configure.ac index eaa9bf7ee..3e72e28bf 100644 --- a/configure.ac +++ b/configure.ac @@ -88,6 +88,7 @@ OVS_CHECK_WIN32 OVS_CHECK_VISUAL_STUDIO_DDK OVS_CHECK_COVERAGE OVS_CHECK_NDEBUG +OVS_CHECK_USDT OVS_CHECK_NETLINK OVS_CHECK_OPENSSL OVS_CHECK_LIBCAPNG diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4 index 772825a71..4c3bace6e 100644 --- a/m4/openvswitch.m4 +++ b/m4/openvswitch.m4 @@ -60,6 +60,34 @@ AC_DEFUN([OVS_CHECK_NDEBUG], [ndebug=false]) AM_CONDITIONAL([NDEBUG], [test x$ndebug = xtrue])]) +dnl Checks for --enable-usdt-probes and defines HAVE_USDT if it is specified. +AC_DEFUN([OVS_CHECK_USDT], [ + AC_ARG_ENABLE( + [usdt-probes], + [AC_HELP_STRING([--enable-usdt-probes], + [Enable User Statically Defined Tracing (USDT) probes])], + [case "${enableval}" in + (yes) usdt=true ;; + (no) usdt=false ;; + (*) AC_MSG_ERROR([bad value ${enableval} for --enable-usdt-probes]) ;; + esac], + [usdt=false]) + + AC_MSG_CHECKING([whether USDT probes are enabled]) + if test "$usdt" != true; then + AC_MSG_RESULT([no]) + else + AC_MSG_RESULT([yes]) + + AC_CHECK_HEADER([sys/sdt.h], [], + [AC_MSG_ERROR([unable to find sys/sdt.h needed for USDT support])]) + + AC_DEFINE([HAVE_USDT_PROBES], [1], + [Define to 1 if USDT probes are enabled.]) + fi + AM_CONDITIONAL([HAVE_USDT_PROBES], [test $usdt = true]) +]) + dnl Checks for MSVC x64 compiler. AC_DEFUN([OVS_CHECK_WIN64], [AC_CACHE_CHECK( _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
