gplugin/gplugin

Hide properties type on FreeBSD.
develop
2020-02-29, Elliott Sales de Andrade
412d67a92be9
Hide properties type on FreeBSD.

In `perl.h`, there is:
```
#ifdef I_LIBUTIL
#include
#endif
```
and on FreeBSD, `I_LIBUTIL` is defined in Perl's `config.h`. That header does
not really appear to be necessary for Perl, but it has the side effect of
declaring a `properties` type. This is a generic name used in our code base, so
we hack around it with the preprocessor. Preferably, FreeBSD would fix that in
their Perl port in the future.
###############################################################################
# Options
###############################################################################
option(
'gobject-introspection',
type : 'boolean', value : true,
description : 'Whether or not to build a GObject Introspection type library'
)
option(
'nls',
type : 'boolean', value : true,
description : 'Install translation files'
)
option(
'help2man',
type : 'boolean', value : true,
description : 'Whether or not to build man pages from --help output'
)
option(
'doc',
type : 'boolean', value : true,
description : 'build documentation with gtk-doc'
)
option(
'gtk3',
type : 'boolean', value : true,
description : 'Whether or not to build the gtk3 library'
)
option(
'lua',
type : 'boolean', value : true,
description : 'Whether or not to build the Lua plugin loader'
)
option(
'perl',
type : 'boolean', value : true,
description : 'Whether or not to build the Perl plugin loader'
)
option(
'python3',
type : 'boolean', value : true,
description : 'Whether or not to build the Python 3.x plugin loader'
)
option(
'tcc',
type : 'boolean', value : false,
description : 'Whether or not to build the TCC plugin loader'
)
option(
'vapi',
type : 'boolean', value : true,
description : 'Whether or not to build vapi files for gplugin'
)