png support broken?

png support broken?

[Werner LEMBERG]

[CVS 2003-09-22]

It seems that PNG image support has been broken recently -- it has
still worked with the CVS from 2003-08-31.


    Werner

Re: png support broken?

[David Kastrup]

Werner LEMBERG <wl@gnu.org> writes:

> [CVS 2003-09-22]
> 
> It seems that PNG image support has been broken recently -- it has
> still worked with the CVS from 2003-08-31.

The version and operating system info could be a bit more explicit.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum

Re: png support broken?

[Werner LEMBERG]

> > [CVS 2003-09-22]
> > 
> > It seems that PNG image support has been broken recently -- it has
> > still worked with the CVS from 2003-08-31.
> 
> The version and operating system info could be a bit more explicit.

:-) Gnu/Linux 2.4.10, libpng12.so.3.1.2.5.


    Werner

Re: png support broken?

[Richard Stallman]

    :-) Gnu/Linux 2.4.10, libpng12.so.3.1.2.5.

2.4.10 looks like a version number of Linux.
The concept of version numbers for GNU/Linux is not meaningful,
because there are various distributors of GNU/Linux systems,
and each has its own version numbering scheme.

Re: png support broken?

[Robert J. Chassell]

   [CVS 2003-09-22]

   It seems that PNG image support has been broken recently -- it has
   still worked with the CVS from 2003-08-31.

After evaluating  (auto-image-file-mode t)  I can view PNG images using

    today's CVS snapshot, Tue, 2003 Sep 23 12:14 UTC
    GNU Emacs 21.3.50.86 (i686-pc-linux-gnu, GTK+ Version 2.2.1)
    kernel 2.4.21,
    libpng10.so.0.1.0.15
        [I also have    libpng12.so.0.1.2.5
         but not its related png.h and pngconf.h files 
         for which ./configure checks]

started with

  /usr/local/bin/emacs -q --no-site-file --eval '(blink-cursor-mode 0)'

-- 
    Robert J. Chassell                         Rattlesnake Enterprises
    http://www.rattlesnake.com                  GnuPG Key ID: 004B4AC8
    http://www.teak.cc                             bob@rattlesnake.com

Re: png support broken?

[Werner LEMBERG]

> After evaluating (auto-image-file-mode t) I can view PNG images
> using

> 
>     today's CVS snapshot, Tue, 2003 Sep 23 12:14 UTC
>     GNU Emacs 21.3.50.86 (i686-pc-linux-gnu, GTK+ Version 2.2.1)
>     kernel 2.4.21,
>     libpng10.so.0.1.0.15
>         [I also have    libpng12.so.0.1.2.5
>          but not its related png.h and pngconf.h files 
>          for which ./configure checks]
> 
> started with
> 
>   /usr/local/bin/emacs -q --no-site-file --eval '(blink-cursor-mode 0)'

I've now found out (with ldd) that I wasn't using libpng12 at all!

I've the following libraries of libpng in /usr/lib:

  libpng.so -> libpng.so.2
  libpng.so.1 -> libpng.so.1.0.89
  libpng.so.1.0.89
  libpng.so.2 -> libpng.so.2.1.0.12
  libpng.so.2.1.0.12

And I have this in /usr/local/lib:

  libpng.so -> libpng.so.3
  libpng.so.3 -> libpng.so.3.1.2.5
  libpng.so.3.1.2.5
  libpng12.so -> libpng12.so.0
  libpng12.so.0 -> libpng12.so.0.1.2.5
  libpng12.so.0.1.2.5

I always thought that by default gcc searches /usr/local/include for
include files and /usr/local/lib for library files besides the
standard /usr/include and /usr/lib, respectively (I don't have the
environment variables INCLUDE_PATH and LIBRARY_PATH set).  So I wonder
why gcc is using libpng.so.2 and not libpng.so.3?  What am I doing
wrong?

After using LDFLAGS=/usr/local/lib during configuration my emacs is
finally linked to libpng.so.3.


    Werner