[glibmm] Do not use gthread-2.0.

[Murray Cumming <murrayc src gnome org>]

commit 14747701d19d79234cbca202745df5d7605504ce
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Oct 25 10:31:49 2011 +0200

    Do not use gthread-2.0.
    
    * configure.ac: Do not use gthread-2.0 at all, because it only contains
    empty functions so it is better to just not call them.
    Require the latest glib version, to avoid people using this version of
    glibmm with a version of glib that would need g_thread_init().
    * glib/src/thread.ccg: thread_init(): Do not call g_thread_init() because
    it now does nothing and would require linking to gthread-2.0.

 ChangeLog           |   11 +++++++++++
 configure.ac        |    7 ++-----
 glib/src/thread.ccg |    6 +++++-
 3 files changed, 18 insertions(+), 6 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c4c715f..05e6b4f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2011-10-25  Murray Cumming  <murrayc murrayc com>
 
+	Do not use gthread-2.0.
+
+	* configure.ac: Do not use gthread-2.0 at all, because it only contains 
+	empty functions so it is better to just not call them.
+	Require the latest glib version, to avoid people using this version of 
+	glibmm with a version of glib that would need g_thread_init().
+	* glib/src/thread.ccg: thread_init(): Do not call g_thread_init() because 
+	it now does nothing and would require linking to gthread-2.0.
+
+2011-10-25  Murray Cumming  <murrayc murrayc com>
+
 	Fix the make check build by always linking to gthread-2.0.
 
 	* configure.ac: Always use gthread-2.0 because there is now no advantage to
diff --git a/configure.ac b/configure.ac
index bc14eeb..f7255a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,12 +60,9 @@ AS_IF([test "x$enable_static" = xyes],
   AC_DEFINE([GIOMM_STATIC_LIB],  [1], [Define if giomm is built as a static library])
 ])
 
-glibreq='2.0 >= 2.30.0'
+glibreq='2.0 >= 2.31.0'
 
-# Note that we use gthread-2.0 only to link to deprecated API.
-# Note also that the deprecated g_thread_init() API does not actually do anything now,
-# and there is now no advantage to not linking to it by default.
-GLIBMM_MODULES="sigc++-2.0 >= 2.0.10 glib-$glibreq gobject-$glibreq gmodule-$glibreq gthread-$glibreq"
+GLIBMM_MODULES="sigc++-2.0 >= 2.0.10 glib-$glibreq gobject-$glibreq gmodule-$glibreq"
 GIOMM_MODULES="$GLIBMM_MODULES gio-$glibreq"
 test "x$glibmm_host_windows" = xyes || GIOMM_MODULES="$GIOMM_MODULES gio-unix-$glibreq"
 
diff --git a/glib/src/thread.ccg b/glib/src/thread.ccg
index 1c73cee..71c4b7d 100644
--- a/glib/src/thread.ccg
+++ b/glib/src/thread.ccg
@@ -141,7 +141,11 @@ ThreadPriority Thread::get_priority() const
 
 void thread_init(GThreadFunctions* vtable)
 {
-  g_thread_init(vtable);
+  //g_thread_init() is deprecated and now does nothing,
+  //so we do not even call it. That avoids a need to link to gthread-2.0, 
+  //which contains the empty g_thread_init() implementation.
+  //g_thread_init(vtable);
+  
   Glib::thread_init_impl();
 }