meson: Don't install if it's a static subproject

doc/meson.build

@@ -45,6 +45,6 @@ gnome.gtkdoc('libhandy',
         install_dir: 'libhandy',
       content_files: content_files,
         html_assets: images,
-            install: true)
+            install: installable)
 
 endif

examples/meson.build

@@ -17,7 +17,7 @@ example_sources = [
 example = executable('example', example_sources,
   dependencies: libhandy_dep,
   gui_app: true,
-  install: true,
+  install: installable,
 )
 
 endif

meson.build

@@ -120,6 +120,8 @@ endif
 
 static = get_option('static')
 
+installable = not (static and meson.is_subproject())
+
 glade_catalog_feature = get_option('glade_catalog')
 if static and glade_catalog_feature.enabled()
   error('The Glade Catalog isn’t available for static libhandy.')

po/meson.build

 i18n = import('i18n')
-i18n.gettext('libhandy', preset : 'glib')
+i18n.gettext('libhandy',
+             preset : 'glib',
+             install : installable)

src/meson.build

@@ -18,18 +18,27 @@ version_data.set('HDY_MINOR_VERSION', handy_version_minor)
 version_data.set('HDY_MICRO_VERSION', handy_version_micro)
 version_data.set('HDY_VERSION', meson.project_version())
 
-hdy_version_h = configure_file(
-           input: 'hdy-version.h.in',
-          output: 'hdy-version.h',
-     install_dir: libhandy_header_dir,
-         install: true,
-   configuration: version_data)
+# TODO: Once Meson 0.50.0 is required, use this to prevent installation:
+#       install: installable,
+if installable
+  hdy_version_h = configure_file(
+             input: 'hdy-version.h.in',
+            output: 'hdy-version.h',
+       install_dir: libhandy_header_dir,
+     configuration: version_data)
+else
+  hdy_version_h = configure_file(
+             input: 'hdy-version.h.in',
+            output: 'hdy-version.h',
+     configuration: version_data)
+endif
 
 libhandy_generated_headers = [
 ]
-
-install_headers(['handy.h'],
-  subdir: libhandy_header_subdir)
+if installable
+  install_headers(['handy.h'],
+    subdir: libhandy_header_subdir)
+endif
 
 # Filled out in the subdirs
 libhandy_public_headers = []
@@ -40,7 +49,7 @@ hdy_enums = gnome.mkenums('hdy-enums',
       h_template: 'hdy-enums.h.in',
       c_template: 'hdy-enums.c.in',
          sources: hdy_enum_headers,
-  install_header: true,
+  install_header: installable,
      install_dir: libhandy_header_dir,
 )
 
@@ -105,7 +114,9 @@ src_sources = [
 libhandy_public_headers += files(src_headers)
 libhandy_public_sources += files(src_sources)
 
-install_headers(src_headers, subdir: libhandy_header_subdir)
+if installable
+  install_headers(src_headers, subdir: libhandy_header_subdir)
+endif
 
 
 libhandy_sources = [
@@ -160,7 +171,7 @@ libhandy = build_target(
                c_args: libhandy_c_args,
          dependencies: libhandy_deps,
   include_directories: [ root_inc, src_inc ],
-              install: true,
+              install: installable,
             link_args: libhandy_link_args,
           install_dir: handy_libdir,
           target_type: libtype,
@@ -205,13 +216,15 @@ endif
 
 pkgg = import('pkgconfig')
 
-pkgg.generate(
-    libraries: [libhandy],
-      subdirs: libhandy_header_subdir,
-      version: meson.project_version(),
-         name: 'Handy',
-     filebase: 'libhandy-@0@'.format(apiversion),
-  description: 'Handy Mobile widgets',
-     requires: 'gtk+-3.0',
-  install_dir: join_paths(libdir, 'pkgconfig'),
-)
+if installable
+  pkgg.generate(
+      libraries: [libhandy],
+        subdirs: libhandy_header_subdir,
+        version: meson.project_version(),
+           name: 'Handy',
+       filebase: 'libhandy-@0@'.format(apiversion),
+    description: 'Handy Mobile widgets',
+       requires: 'gtk+-3.0',
+    install_dir: join_paths(libdir, 'pkgconfig'),
+  )
+endif