How do I test dll for import feature on MinGW?

[Tatsuro M. <tma...@ya...>]

Hello

I have build the recent cvs source (ChangeLog date 2014-03-10) on MinGW platform.
I would like to test import dll feature.

Different from cygwin build, Makefile was not made in demo/pluglin directory.

I tried cd to demo/pluglin directory and execute

$ automake
automake: `configure.ac' or `configure.in' is required

I could not make Makefile.

So I tried at demo/pluglin directory

$ gcc -c demo_plugin.c -I../../src
In file included from ../../src/gp_types.h:40:0,
                 from gnuplot_plugin.h:2,
                 from demo_plugin.c:14:
../../src/syscfg.h:365:23: error: two or more data types in declaration specifiers
../../src/syscfg.h:365:1: warning: useless type name in empty declaration [enabled by default]

The error
syscfg.h:365:23: error: two or more data types in declaration specifiers
seems to be critical.

Any suggestions ?

Regards

Tatsuro