I've today downloaded plotutils-2.6. There appeared two compile errors from
"make". The error text (reproduced herein manually) indicates:
In file included from /usr/include/png.h:452:0,
from z_write.c:43:
z_write.c: In function '_pl_z_maybe_output_image':
z_write.c:167:22: error: dereferencing pointer to incomplete type
if ( setjmp ( png_ptr ->jmpbuf))
^
z_write.c: In function '_our_error_fn_stdio':
z_write.c:447:19: error: dereferencing pointer to incomplete type
longjmp ( png_ptr ->jmpbuf,1)
^
make[2]: *** [z_write.lo] Error 1
make[2]: Leaving directory '/home/jhancock/Downloads/plotutils-2.6/libplot'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/jhancock/Downloads/plotutils-2.6'
make[1]: *** [all] Error 2
The file /usr/include/png.h contains the following comments:
/* png.h - header file for PNG reference library
*
* libpng version 1.5.13 - September 27, 2012
* Copyright (c) 1998 - 2012 Glenn Randers-Perhson
The /usr/include/png.h file presumably was bundled within
CentOS-7-i386-DVD-1511.iso which I had installed a couple of days ago.
Jack Hancock
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