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Date: Tue, 12 Jan 2016 15:31:14 +0000 (UTC)
From: Jason Kenny <jkenny@yahoo-inc.com.INVALID>
Reply-To: Jason Kenny <jkenny@yahoo-inc.com>
To: "dev@trafficserver.apache.org" <dev@trafficserver.apache.org>
Message-ID: <1075055997.3113210.1452612674678.JavaMail.yahoo@mail.yahoo.com>
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Subject: Re: Build with ASAN
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Hi,
I have not built with asan with clang on the mac. I have built for RHEL 6 a=
nd 7. I had to configure with these options.
CXXFLAGS -fno-omit-frame-pointer -fsanitize=3Daddress -static-libasan\
CFLAGS=3D"-fno-omit-frame-pointer -fsanitize=3Daddress -static-libasan"\--d=
isable-freelist\LUA_LDFLAGS=3D"-fno-omit-frame-pointer -fsanitize=3Daddress=
 -pthread -static-libasan"

This seemed to work for me. On newer systems i was having issues with Lua b=
reaking the build as the tools has memory leaks in it. You can work around =
it by disabling Lua or just trying to add flags to CXXFLAGS at risk that so=
mething might not be reported correctly in the lua and or c code.
On linux at least if i was getting link errors it was because the libasan l=
ibrary was not installed.
The mac from my experience is different from linux so this might not transl=
ate to the mac 100%
Hope this helps=C2=A0Jason=C2=A0
=20

      From: Masakazu Kitajo <maskit@apache.org>
 To: dev@trafficserver.apache.org=20
 Sent: Tuesday, January 12, 2016 2:40 AM
 Subject: Build with ASAN
  =20
Hi there,

I can enable ASAN with -fsanitize=3Daddress flag but I also needed to remov=
e
-no-undefined flag manually from some modules' Makefiles.

Without the modification, I get link errors such like below:
https://paste.apache.org/5sR6

According to the wiki, it seems we can't use ASAN with -no-undefined.
https://github.com/google/sanitizers/wiki/AddressSanitizer

So my questions are:
- How do you enable ASAN? (How/Where do you specify the flag?)
- How can I avoid the link error without manual modifications?

My build environment is OS X (Yosemite) with Apple LLVM version 7.0.2
(clang-700.1.81)

Thanks,
Masakazu


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