Re: [matplotlib-devel] libpng 1.2.5 runtime error

[John H. <jdh...@ac...>]

>>>>> "Stefan" == Stefan Kuzminski <pon...@ya...> writes:

    Stefan> Hi, I upgraded to libpng v1.2.5 from v1.0.14.  ( on a
    Stefan> linux box, using Agg backend and matplotlib v0.54.2 ) Now
    Stefan> I get this Runtime error thrown at _backend_agg.cpp line
    Stefan> 948

    Stefan> png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
    Stefan> NULL, NULL, NULL); if (png_ptr == NULL) { fclose(fp);
    Stefan> throw Py::RuntimeError("could not create write struct");
    Stefan>   }

    Stefan> Has anyone seen this?

I just tried a built both matplotlib 0.54.2 and CVS against
libpng1.2.5 and was able to save an agg png w/o incident.  Make sure
you are not getting old png headers, have a clean matplotlib build,
run ldconfig, etc...

JDH