Re: Note for building gd wiwith libpng-1.4

[Manfred S. <man...@gm...>]

Am Sonntag, den 07.03.2010, 12:39 +0100 schrieb Manfred Schwarb:
> Am Sonntag, den 07.03.2010, 11:54 +0900 schrieb Tatsuro MATSUOKA:
> > Hello
> > 
> > This is just a note for those who try to build the libgd with libpng-1.4.
> > 
> > I have update the libpng version of which is 1.4.
> > >>From the libpng-1.4, the function 'png_check_sig' is removed.
> > The change makes the libgd building in failure.
> > 
> > ./.libs/libgd.a(gd_png.o):gd_png.c:(.text+0xd20): undefined reference to `png_check_sig'
> > 
> >   The function png_check_sig can be replaced as 
> >       replace
> >         png_check_sig(buf, 8)
> >       with
> >         png_sig_cmp(buf, 0, 8) == 0
> > http://www.libpng.org/pub/png/src/libpng-1.2.x-to-1.4.x-summary.txt
> > 
> > A patch has been posted the below,
> > http://bugs.libgd.org/?do=details&task_id=218&histring=png_check_sig
> 
> 
> It is already in libgd, see http://bitbucket.org/pierrejoye/gd-libgd-20/
> 
> You can get the most recent checkout under
> http://bitbucket.org/pierrejoye/gd-libgd-20/get/tip.tar.gz
> 
> 

Although recent checkouts do not compile, as configure.ac additions have
to be made for the latest added test cases:
Around line 570 of configure.ac, you have to add
   tests/gdimagefilledpolygon/Makefile
   tests/gdimageopenpolygon/Makefile
   tests/gdimagepolygon/Makefile



> Cheers,
> Manfred
> 
> 
> > 
> > Regards
> > 
> > Tatsuro
> > 
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