Trouble building 21.4.22

[Alan Mackenzie]

Hi, Julian.

On Sat, Feb 11, 2012 at 03:11:06PM +0000, Julian Bradfield wrote:
> On 2012-02-11, Alan Mackenzie <acm at muc.de> wrote:
> > When I try to build XEmacs-21.4.22 on a fully normal Gnu/Linux system, I
> > get the following errors:

> > gcc -c -g -O3 -Wall -Wno-switch -Winline -Wmissing-prototypes -Wsign-compare -fno-strict-aliasing -Wshadow  -Demacs -I. -DHAVE_CONFIG_H glyphs-eimage.c
> > glyphs-eimage.c: In function 'png_instantiate':
> > glyphs-eimage.c:940:22: error: dereferencing pointer to incomplete type

> > Has anybody else seen this, or can anybody offer me any suggestions?

> Suggestion: google the error message and png, and read the first
> few hits.
> XEmacs is using no longer supported direct access to png structures.
> Downgrade your png, or change the code to use the advertised methods.

I did just that, and it was indeed so.  In one of the hits I found,
Adrian Kehoe recommended "with-png=no" in ./configure.  I did that, and
it now builds.  Thanks!

-- 
Alan Mackenzie (Nuremberg, Germany).