trace-cmd: fix ptrace detection

From 0070081ffe65a4fbe442044ddfcc818593c98e33 Mon Sep 17 00:00:00 2001

From: Romain Naour <romain.naour@openwide.fr>

Date: Wed, 30 Oct 2013 22:35:34 +0100

Subject: [PATCH] Fix ptrace detection

Ptrace support detection is ignored when CFLAGS is set in command

arguments. Use override in Makefile to add -DWARN_NO_PTRACE and

-DNO_PTRACE in CFLAGS if ptrace is not available.

Signed-off-by: Romain Naour <romain.naour@openwide.fr>

---

 Makefile | 4 ++--

 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile

index 83329ca..01b4f45 100644

--- a/Makefile

+++ b/Makefile

@@ -223,12 +223,12 @@ LDFLAGS ?=

 ifndef NO_PTRACE

 ifneq ($(call try-cc,$(SOURCE_PTRACE),),y)

 	NO_PTRACE = 1

-	CFLAGS += -DWARN_NO_PTRACE

+	override CFLAGS += -DWARN_NO_PTRACE

 endif

 endif

 ifdef NO_PTRACE

-CFLAGS += -DNO_PTRACE

+override CFLAGS += -DNO_PTRACE

 endif

 # Append required CFLAGS

-- 

1.8.1.2