Re: [libvirt] [PATCH] [Build-breaker : 1.2.12] Suppress compilation without dbus headers

Hi, While testing 1.2.12 rc2 on Powerpc, Fedora 21, I hit a bunch of build failures in absence of dbus-devel : src/util/virsystemd.c:284:17: note: in expansion of macro 'STREQ_NULLABLE' if (STREQ_NULLABLE("org.freedesktop.DBus.Error.UnknownMethod", ^ .... src/util/virsystemd.c:288:17: error: implicit declaration of function 'dbus_error_free' [-Werror=implicit-function-declaration] dbus_error_free(&error); Found that this was because commit 318df5a05 needs Dbus libraries for compilation, and configure didnt mark "with_dbus" to be mandatory. In this case, the compilation itself failed in a much uglier fashion on my system where dbus-devel was absent. The following patch introduces a compile error when dbus-devel is absent, so that the build itself proceeds later without cryptic errors. This has also been reported on the list : https://www.redhat.com/archives/libvir-list/2015-January/msg00641.html