File seafile-fix-compilation-glib2_68.patch of Package seafile

From 935f6a6ef56c883949c8dcbd5a13d2c515b506fd Mon Sep 17 00:00:00 2001
From: Aleksei Bavshin <alebastr89@gmail.com>
Date: Sun, 14 Feb 2021 20:06:02 +0000
Subject: [PATCH] Wrap public declarations with G_BEGIN_DECLS/G_END_DECLS

Glib release 2.67.3 started conditionally using some C++ code[1] in the
public headers and it's no longer legal to include "glib.h" or anything
that includes it transitively from `extern "C"` block.

The solution recommended by the glib developers is to enclose all
declarations in a header within G_BEGIN_DECLS and G_END_DECLS as shown
in gobject developer manual[2]. Since G_BEGIN/END_DECLS expands to an
`extern "C"` block it's also acceptable to use it directly when "glib.h"
is not included in the current header file.

[1] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1715
[2] https://developer.gnome.org/gobject/stable/howto-gobject.html#howto-gobject-header
---
 include/seafile-rpc.h | 5 +++++
 include/seafile.h     | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/include/seafile-rpc.h b/include/seafile-rpc.h
index 36d22f68f..b27b261ea 100644
--- a/include/seafile-rpc.h
+++ b/include/seafile-rpc.h
@@ -5,6 +5,8 @@
 #include <jansson.h>
 #include "seafile-object.h"
 
+G_BEGIN_DECLS
+
 /**
  * seafile_get_repo_list:
  *
@@ -216,4 +218,7 @@ seafile_shutdown (GError **error);
 
 char*
 seafile_sync_error_id_to_str (int error_id, GError **error);
+
+G_END_DECLS
+
 #endif
diff --git a/include/seafile.h b/include/seafile.h
index 11aa6313a..75ca665ca 100644
--- a/include/seafile.h
+++ b/include/seafile.h
@@ -3,6 +3,10 @@
 #ifndef SEAFILE_H
 #define SEAFILE_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int seafile_destroy_repo (SearpcClient *client,
                           const char *repo_id, GError **error);
 
@@ -39,5 +43,8 @@ char *seafile_get_config (SearpcClient *client, const char *key, GError **error)
 
 int seafile_calc_dir_size (SearpcClient *client, const char *path, GError **error);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif