linux-kernel - [PATCH] tools: Fix pthread flag for Makefile of trace-agent used by virtio-trace

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Date:	Tue, 04 Sep 2012 09:53:39 +0900
From:	Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
To:	Rusty Russell <rusty@...tcorp.com.au>, linux-kernel@...r.kernel.org
Cc:	Amit Shah <amit.shah@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	yrl.pp-manager.tt@...achi.com,
	Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
Subject: [PATCH] tools: Fix pthread flag for Makefile of trace-agent used by
 virtio-trace

pthread flag should not be -lpthread but -pthread using gcc. The -lpthread
links the external multithread library. On the other hand, the -pthread manages
both the gcc's preprocessor and linker to be able to compile with pthread.

Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
---

 tools/virtio/virtio-trace/Makefile |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/virtio/virtio-trace/Makefile b/tools/virtio/virtio-trace/Makefile
index ef3adfc..0d23816 100644
--- a/tools/virtio/virtio-trace/Makefile
+++ b/tools/virtio/virtio-trace/Makefile
@@ -1,14 +1,13 @@
 CC = gcc
-CFLAGS = -O2 -Wall
-LFLAG = -lpthread
+CFLAGS = -O2 -Wall -pthread
 
 all: trace-agent
 
 .c.o:
-	$(CC) $(CFLAGS) $(LFLAG) -c $^ -o $@
+	$(CC) $(CFLAGS) -c $^ -o $@
 
 trace-agent: trace-agent.o trace-agent-ctl.o trace-agent-rw.o
-	$(CC) $(CFLAGS) $(LFLAG) -o $@ $^
+	$(CC) $(CFLAGS) -o $@ $^
 
 clean:
 	rm -f *.o trace-agent

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