From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx> Detect and define VSOCK if vsockets are available on the system. This macro is used to disable VM remote tracing features on older kernels. Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Signed-off-by: Slavomir Kaslev <kaslevs@xxxxxxxxxx> --- Makefile | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Makefile b/Makefile index bbdf15e..9723d49 100644 --- a/Makefile +++ b/Makefile @@ -208,6 +208,13 @@ CFLAGS ?= -g -Wall CPPFLAGS ?= LDFLAGS ?= +VSOCK_DEFINED := $(shell if (echo "\#include <linux/vm_sockets.h>" | $(CC) -E - >/dev/null 2>&1) ; then echo 1; else echo 0 ; fi) + +export VSOCK_DEFINED +ifeq ($(VSOCK_DEFINED), 1) +CFLAGS += -DVSOCK +endif + export CFLAGS export INCLUDES -- 2.20.1
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