[PATCH libinput] meson.build: enable CPP include check only in case CPP compiler is available

Drop hard meson C++/CPP dependency, only needed for the build-time header inclusion test, build the test only in case C++/CPP compiler is available. Signed-off-by: Peter Seiderer --- Fixes the following buildroot autobuild detected failure([1]): The Meson build system Version: 0.49.0

[PATCH libinput] tools: libinput-debug-events stop variable needs volatile

The stop variable set in the signal handler needs volatile (and use the defined sig_atomic_t instead of unsigned int). Signed-off-by: Peter Seiderer --- tools/libinput-debug-events.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/libinput-debug-events.c b/tools