From: Eljay Love-Jensen <eljay@adobe.com>
To: Wesley Smith <wesley.hoke@gmail.com>, GCC-help <gcc-help@gcc.gnu.org>
Subject: Re: runtime link path and g++
Date: Sun, 20 Jul 2008 22:30:00 -0000 [thread overview]
Message-ID: <C4A89515.7226%eljay@adobe.com> (raw)
In-Reply-To: <1079b050807191944i4e4509a7r72b929f4daf6361e@mail.gmail.com>
Hi Wes,
> How can I specify this path to g++? I've seen -R used in some places, but g++
doesn't understand it.
This is a linker issue, not so much a GCC issue. (Although it would be nice
for the GCC tool chain driver to be a little more rpath savvy across
platforms.)
Try -Wl,-rpath=/path/you/want or consider LD_LIBRARY_PATH=/path/you/want as
an environmental to your executable.
http://en.wikipedia.org/wiki/Rpath_(linking)
I'm not familiar with Ubuntu Linux, so it may do things slightly
differently.
For instance, I've heard that Ubuntu uses a different /bin/sh shell (dash
rather than bash), which results in x100 performance for their shell, and
lots of shell impedance mismatch from those who write bash-isms into what
probably should be /bin/sh clean. The caveat is: YMMV.
The rpath option has a few sharp edges. When used with relative paths, it's
a security hole for the wily and devious. If using absolute paths, it makes
the application much less mv-able.
The LD_LIBRARY_PATH option may necessitate having a user-convenience
launching script. That allows your installer to construct the launching
script with all the right baked paths for LD_LIBRARY_PATH, or for the really
tricky, the launching script may figure out those setting dynamically from
how it was launched (using $0).
HTH,
--Eljay
prev parent reply other threads:[~2008-07-20 12:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 12:10 Wesley Smith
2008-07-20 22:30 ` Eljay Love-Jensen [this message]
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