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Re: How to make a program look for dylibs other than /usr/local/lib?

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Re: How to make a program look for dylibs other than /usr/local/lib?

Subject: Re: How to make a program look for dylibs other than /usr/local/lib?
From: "parag vibhute" <email@hidden>
Date: Tue, 11 Dec 2007 19:46:16 +0530

Thanks for explaination. Now understood.

Thanks,
Palav

On Dec 11, 2007 7:36 PM, Alastair Houghton <email@hidden > wrote:

On 11 Dec 2007, at 14:01, parag vibhute wrote:

> On Dec 11, 2007 7:06 PM, Alastair Houghton < email@hidden
> > wrote:
>> On 11 Dec 2007, at 13:30, parag vibhute wrote:
>>
>> > 2. The problem you're trying to solve.
>> >
>> > The same problem i.e. do not want to change environment variables &
>> > also want to place dependant dynamic library at non standard
>> location.
>>
>> You need to use install_name_tool. The -dylib_file option tells the
>> linker (not the dynamic linker) where to find a dylib. It's used if
>> you are trying to link against something that hasn't already been
>> copied to its final location. The final image will still contain the
>> path that was hard-coded into the dylib.
>
> Not understood ur statement "It's used if you are trying to link
> against something that hasn't already been copied to its final
> location." Can u please eloborate it in detail? Is it same as
> Library search path?

It's not what you want.

It's only used if you're trying to do a build and the static linker
can't find a dependent library. For instance, say you have a dylib
"liba.dylib", and a dylib "libb.dylib", and say that " liba.dylib"
links to "libb.dylib", and that your program only links to "liba.dylib".

When it's linking your program, the linker looks in "liba.dylib" and
finds the install name of " libb.dylib" listed as a library that
"liba.dylib" links against. If you haven't yet installed "libb.dylib"
in its final location, the linker will try to open it and fail,
because it isn't where the install name says it should be. The -
dylib_file option is a way around that problem.

Kind regards,

Alastair.

--
http://alastairs-place.net

--

There are many things in your life that will catch your eye but only a few will catch your heart....pursue those'.

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References:
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: Alastair Houghton <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: "parag vibhute" <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: Alastair Houghton <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: "parag vibhute" <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: Alastair Houghton <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: "parag vibhute" <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: Alastair Houghton <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: "parag vibhute" <email@hidden>)
	>Re: How to make a program look for dylibs other than /usr/local/lib? (From: Alastair Houghton <email@hidden>)

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