debian/patches/072_Avoid-pkg-config-atleast-version.patch:

stop AM_PATH_GTK_3_0([3], [], [], [gthread]) trying to require
gthread-2.0 >= 3, which doesn't exist (Closes: #756476)

debian/changelog

@@ -1,8 +1,14 @@
 gtk+3.0 (3.12.2-2) UNRELEASED; urgency=medium
 
+  [ Dmitry Shachnev ]
   * Autopkgtests fixes: add missing xauth dependency, and stop using
     deprecated GtkStock item.
 
+  [ Simon McVittie ]
+  * debian/patches/072_Avoid-pkg-config-atleast-version.patch:
+    stop AM_PATH_GTK_3_0([3], [], [], [gthread]) trying to require
+    gthread-2.0 >= 3, which doesn't exist (Closes: #756476)
+
  -- Dmitry Shachnev <mitya57@gmail.com>  Mon, 16 Jun 2014 17:59:05 +0400
 
 gtk+3.0 (3.12.2-1) unstable; urgency=medium

debian/patches/072_Avoid-pkg-config-atleast-version.patch

@@ -0,0 +1,68 @@
+From 82cf89deb997fd2633cbdeaa659a91f51d6e4cae Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@debian.org>
+Date: Sat, 9 Aug 2014 15:17:44 +0100
+Subject: [PATCH] Avoid "pkg-config --atleast-version"
+
+AM_PATH_GTK_3_0([3.4], [], [], [gthread]) results in calling
+"pkg-config --atleast-version 3.4 gtk+-3.0 gthread-2.0".
+
+With pkg-config 0.28, that test fails, because the version of
+gthread-2.0 is smaller than 3.4. This appears to be a behaviour
+change since 0.26, but matches what the documentation said in 0.26.
+
+Bug: https://bugzilla.gnome.org/show_bug.cgi?id=641638
+Bug-Debian: https://bugs.debian.org/756476
+Reviewed-by: Matthias Clasen <mclasen@redhat.com>
+Applied-upstream: 3.12.3
+---
+ m4macros/gtk-3.0.m4 | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/m4macros/gtk-3.0.m4 b/m4macros/gtk-3.0.m4
+index 5238b43..0d605fb 100644
+--- a/m4macros/gtk-3.0.m4
++++ b/m4macros/gtk-3.0.m4
+@@ -11,8 +11,9 @@ dnl Get the cflags and libraries from pkg-config
+ dnl
+ AC_ARG_ENABLE(gtktest, [  --disable-gtktest       do not try to compile and run a test GTK+ program],
+ 		    , enable_gtktest=yes)
++  min_gtk_version=ifelse([$1], [], [3.0.0], [$1])
+ 
+-  pkg_config_args=gtk+-3.0
++  pkg_config_args="gtk+-3.0 >= $min_gtk_version"
+   for module in . $4
+   do
+       case "$module" in
+@@ -38,7 +39,6 @@ AC_ARG_ENABLE(gtktest, [  --disable-gtktest       do not try to compile and run
+     no_gtk=yes
+   fi
+ 
+-  min_gtk_version=ifelse([$1], ,3.0.0,$1)
+   AC_MSG_CHECKING(for GTK+ - version >= $min_gtk_version)
+ 
+   if test x$PKG_CONFIG != xno ; then
+@@ -48,7 +48,7 @@ AC_ARG_ENABLE(gtktest, [  --disable-gtktest       do not try to compile and run
+ 	  enable_gtktest=no
+     fi
+ 
+-    if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args; then
++    if $PKG_CONFIG $pkg_config_args; then
+ 	  :
+     else
+ 	  no_gtk=yes
+@@ -202,10 +202,11 @@ AC_DEFUN([GTK_CHECK_BACKEND],
+ [
+   pkg_config_args=ifelse([$1],,gtk+-3.0, gtk+-$1-3.0)
+   min_gtk_version=ifelse([$2],,3.0.0,$2)
++  pkg_config_args="$pkg_config_args >= $min_gtk_version"
+ 
+   AC_PATH_PROG(PKG_CONFIG, [pkg-config], [AC_MSG_ERROR([No pkg-config found])])
+ 
+-  if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args ; then
++  if $PKG_CONFIG $pkg_config_args ; then
+     target_found=yes
+   else
+     target_found=no
+-- 
+2.1.0.rc1
+

debian/patches/series

@@ -11,3 +11,4 @@
 060_ignore-random-icons.patch
 061_multiarch_module_fallback.patch
 071_fix-installation-of-HTML-images.patch
+072_Avoid-pkg-config-atleast-version.patch