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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index e6b8e46..f308c12 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -183,7 +183,6 @@ if(ENABLE_EXTRA_GCC_CHECKS)   # This overrides -Werror
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 endif()
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 add_definitions(
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-	-DG_DISABLE_DEPRECATED
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 	-DG_DISABLE_SINGLE_INCLUDES
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 )
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diff --git a/configure.ac b/configure.ac
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index cf593db..4e2f0d2 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1474,14 +1474,6 @@ then
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 fi
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 AC_SUBST(MOC)
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-# Error out if a glib header other than a "top level" header
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-#  (glib.h, glib-object.h, gio.h) or certain other headers( e.g.,gmodule.h)
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-#  is used.
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-CPPFLAGS="-DG_DISABLE_SINGLE_INCLUDES $CPPFLAGS"
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-
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-# Error out on the usage of deprecated glib functions
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-CPPFLAGS="-DG_DISABLE_DEPRECATED $CPPFLAGS"
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-
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 #
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 # Check whether GLib modules are supported, to determine whether we
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 # can support plugins.