[gcab] nls: Add meson option to enable/disable NLS

[Marc-André Lureau <malureau src gnome org>]

commit 7d7721b67311b11c7897e6e3037881e91dbec46e
Author: Daniel Campello <campello chromium org>
Date:   Tue Feb 12 11:58:59 2019 -0700

    nls: Add meson option to enable/disable NLS
    
    New meson option to enable/disable Native Language Support.
    See https://packages.gentoo.org/useflags/nls for motivation.

 meson.build       | 5 ++++-
 meson_options.txt | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 9f6675e..d48cf5f 100644
--- a/meson.build
+++ b/meson.build
@@ -118,9 +118,12 @@ configure_file(
 )
 
 subdir('libgcab')
-subdir('po')
 subdir('src')
 
+if get_option('nls')
+subdir('po')
+endif
+
 if get_option('docs')
 subdir('docs')
 endif
diff --git a/meson_options.txt b/meson_options.txt
index b7ade3f..8aecd20 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,4 +1,5 @@
 option('docs', type : 'boolean', value : true, description : 'enable developer documentation')
 option('introspection', type : 'boolean', value : true, description : 'generate GObject Introspection data')
+option('nls', type : 'boolean', value : true, description : 'enable native language support')
 option('vapi', type : 'boolean', value : true, description: 'generate Vala bindings (requires 
introspection)')
 option('tests', type : 'boolean', value : true, description : 'enable tests')