meson: compile GUnixCredentialsMessage on all platforms

The header is now also installed under the common GIO include directory.

Sorry if it breaks any build, you had to use the correct header path.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

docs/reference/gio/meson.build

@@ -109,7 +109,6 @@ if get_option('gtk_doc')
     ignore_headers += [
       'gfiledescriptorbased.h',
       'gunixconnection.h',
-      'gunixcredentialsmessage.h',
       'gunixmounts.h',
       'gunixfdlist.h',
       'gunixfdmessage.h',

gio/gunixcredentialsmessage.c

@@ -31,6 +31,14 @@
  * g_unix_connection_receive_credentials(). To receive credentials of
  * a foreign process connected to a socket, use
  * g_socket_get_credentials().
+ *
+ * Since GLib 2.72, #GUnixCredentialMessage is available on all platforms. It
+ * requires underlying system support (such as Windows 10 with `AF_UNIX`) at run
+ * time.
+ *
+ * Before GLib 2.72, `<gio/gunixcredentialsmessage.h>` belonged to the UNIX-specific
+ * GIO interfaces, thus you had to use the `gio-unix-2.0.pc` pkg-config file
+ * when using it. This is no longer necessary since GLib 2.72.
  */
 
 #include "config.h"
@@ -40,7 +48,9 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <string.h>
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 
 #include "gunixcredentialsmessage.h"
 #include "gcredentials.h"

gio/meson.build

@@ -347,7 +347,6 @@ if host_system != 'windows'
     'gfiledescriptorbased.c',
     'giounix-private.c',
     'gunixconnection.c',
-    'gunixcredentialsmessage.c',
     'gunixfdlist.c',
     'gunixfdmessage.c',
     'gunixmount.c',
@@ -376,7 +375,6 @@ if host_system != 'windows'
   gio_unix_include_headers = files(
     'gfiledescriptorbased.h',
     'gunixconnection.h',
-    'gunixcredentialsmessage.h',
     'gunixmounts.h',
     'gunixfdlist.h',
     'gunixfdmessage.h',
@@ -567,6 +565,7 @@ gio_sources = files(
   'gdtlsclientconnection.c',
   'gdtlsserverconnection.c',
   'gunionvolumemonitor.c',
+  'gunixcredentialsmessage.c',
   'gunixsocketaddress.c',
   'gvfs.c',
   'gvolume.c',
@@ -703,6 +702,7 @@ gio_headers = files(
   'gdtlsconnection.h',
   'gdtlsclientconnection.h',
   'gdtlsserverconnection.h',
+  'gunixcredentialsmessage.h',
   'gunixsocketaddress.h',
   'gvfs.h',
   'gvolume.h',