GNU bug report logs - #25584
Setting DYLD_LIBRARY_PATH doesn't work on recent macOS

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Package: libtool; Reported by: Reuben Thomas <rrt@HIDDEN>; dated Mon, 30 Jan 2017 22:18:01 UTC; Maintainer for libtool is bug-libtool@HIDDEN.

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From: Reuben Thomas <rrt@HIDDEN>
Date: Mon, 30 Jan 2017 22:17:10 +0000
Message-ID: <CAOnWdogfC1WeS91MXFcm5ehVd6n-ANRkvwtuCDo55R9u7MxFKQ@HIDDEN>
Subject: Setting DYLD_LIBRARY_PATH doesn't work on recent macOS
To: bug-libtool@HIDDEN
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[Apologies if this is not news; I searched the mailing list archive, but
didn't find anything about this.]

I have just been trying to debug some libtoolized code on macOS 10.12
(Sierra).

I am using lldb, to avoid going through some signing rigmarole with gdb.

When I start it up it complains about not being able to find a dynamic
library in /usr/local/lib, which is correct, as it's not there. On
investigation, DYLD_LIBRARY_PATH is correctly set, but is ignored.

As far as I can tell, this is by design: the System Integrity Protection
feature of macOS 10.11 and later disables DYLD_LIBRARY_PATH.

This means that dynamic libraries can't be loaded in-place using current
libtool (I am using 2.4.6).

At the moment, my workaround will be to install the library in
/usr/local/lib, as I don't want to disable SIP on the Mac I'm borrowing to
test a Darwin build of my code!

I guess it won't be long before such security mechanisms surface in popular
GNU/Linux distros=E2=80=A6

I presume that the measures that XCode uses to get around this could be
used in GNU libtool (though I confess I don't know what they are, and right
now don't plan to look, as I'm not a regular Darwin user, just someone
trying to make code compile on this popular platform, sigh).

--=20
http://rrt.sc3d.org

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">[Ap=
ologies if this is not news; I searched the mailing list archive, but didn&=
#39;t find anything about this.]</div><div class=3D"gmail_default" style=3D=
"font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-size=
:small">I have just been trying to debug some libtoolized code on macOS 10.=
12 (Sierra).</div><div class=3D"gmail_default" style=3D"font-size:small"><b=
r></div><div class=3D"gmail_default" style=3D"font-size:small">I am using l=
ldb, to avoid going through some signing rigmarole with gdb.</div><div clas=
s=3D"gmail_default" style=3D"font-size:small"><br></div><div class=3D"gmail=
_default" style=3D"font-size:small">When I start it up it complains about n=
ot being able to find a dynamic library in /usr/local/lib, which is correct=
, as it&#39;s not there. On investigation, DYLD_LIBRARY_PATH is correctly s=
et, but is ignored.</div><div class=3D"gmail_default" style=3D"font-size:sm=
all"><br></div><div class=3D"gmail_default" style=3D"font-size:small">As fa=
r as I can tell, this is by design: the System Integrity Protection feature=
 of macOS 10.11 and later disables DYLD_LIBRARY_PATH.</div><div class=3D"gm=
ail_default" style=3D"font-size:small"><br></div><div class=3D"gmail_defaul=
t" style=3D"font-size:small">This means that dynamic libraries can&#39;t be=
 loaded in-place using current libtool (I am using 2.4.6).</div><div class=
=3D"gmail_default" style=3D"font-size:small"><br></div><div class=3D"gmail_=
default" style=3D"font-size:small">At the moment, my workaround will be to =
install the library in /usr/local/lib, as I don&#39;t want to disable SIP o=
n the Mac I&#39;m borrowing to test a Darwin build of my code!</div><div cl=
ass=3D"gmail_default" style=3D"font-size:small"><br></div><div class=3D"gma=
il_default" style=3D"font-size:small">I guess it won&#39;t be long before s=
uch security mechanisms surface in popular GNU/Linux distros=E2=80=A6</div>=
<div><br></div><div><div class=3D"gmail_default" style=3D"font-size:small">=
I presume that the measures that XCode uses to get around this could be use=
d in GNU libtool (though I confess I don&#39;t know what they are, and righ=
t now don&#39;t plan to look, as I&#39;m not a regular Darwin user, just so=
meone trying to make code compile on this popular platform, sigh).</div></d=
iv><div><br></div>-- <br><div class=3D"gmail_signature" data-smartmail=3D"g=
mail_signature"><a href=3D"http://rrt.sc3d.org" target=3D"_blank">http://rr=
t.sc3d.org</a></div>
</div>

--001a114a8a5c454f0c0547572d71--




Acknowledgement sent to Reuben Thomas <rrt@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-libtool@HIDDEN. Full text available.
Report forwarded to bug-libtool@HIDDEN:
bug#25584; Package libtool. Full text available.
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Last modified: Mon, 30 Jan 2017 22:30:02 UTC

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