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Re: pkg/44527: libpng does not provide standard names
The following reply was made to PR pkg/44527; it has been noted by GNATS.
From: "OBATA Akio" <obache%netbsd.org@localhost>
Subject: Re: pkg/44527: libpng does not provide standard names
Date: Mon, 07 Feb 2011 17:47:57 +0900
On Mon, 07 Feb 2011 17:15:01 +0900, <multix79%yahoo.com@localhost> wrote:
> Many programs (not referring to other packages of pkgsrc, but to standard
> source packages) will look for the headers in <libpng/png.h> and use the
> linker flag "-lpng" which is perfectly reasonable.
I don't know such souce packages.
But it should use libpng-config, then it should be built with `libpng-config
linked with `libpng-config --ldflags'.
Then in source codes, include <png.h> instead of <libpng/png.h>.
If you want to use certain version of libpng, you should use libpng15-config
It's the preferred approach.
> I would suggest to either remove the renaming because the library sonames
> already have the version, major and minor, or add symbolic links. I suppose
> the renaming of the object and directories was done for a kind of "slotting".
Do you know what will be happened if someone is linked with libpng.so, and the
is linked with libpng15.so, finally, those are linked with each other?
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