[gdk-pixbuf] Avoid some automake warnings

[Matthias Clasen <matthiasc src gnome org>]

commit 9b23b563c3af31264db4aa70a54171b3ad890501
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 18 23:18:38 2013 -0500

    Avoid some automake warnings

 contrib/gdk-pixbuf-xlib/Makefile.am   |    2 +-
 docs/reference/gdk-pixbuf/Makefile.am |    2 +-
 gdk-pixbuf/Makefile.am                |    7 ++++---
 3 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/contrib/gdk-pixbuf-xlib/Makefile.am b/contrib/gdk-pixbuf-xlib/Makefile.am
index d613555..887379d 100644
--- a/contrib/gdk-pixbuf-xlib/Makefile.am
+++ b/contrib/gdk-pixbuf-xlib/Makefile.am
@@ -6,7 +6,7 @@ endif
 
 lib_LTLIBRARIES=libgdk_pixbuf_xlib-2.0.la
 
-INCLUDES = \
+AM_CPPFLAGS = \
        -I$(top_srcdir) -I$(top_builddir)       \
        -I$(top_srcdir)/gdk-pixbuf              \
        -I$(top_srcdir)/contrib                 \
diff --git a/docs/reference/gdk-pixbuf/Makefile.am b/docs/reference/gdk-pixbuf/Makefile.am
index c28e34f..1583a6f 100644
--- a/docs/reference/gdk-pixbuf/Makefile.am
+++ b/docs/reference/gdk-pixbuf/Makefile.am
@@ -34,7 +34,7 @@ IGNORE_HFILES=                                \
        xpm-color-table.h               \
        test-images.h
 
-INCLUDES =                             \
+AM_CPPFLAGS =                          \
        -I$(top_srcdir)                 \
        -I$(top_builddir)               \
        $(GDK_PIXBUF_DEBUG_FLAGS)       \
diff --git a/gdk-pixbuf/Makefile.am b/gdk-pixbuf/Makefile.am
index 8319b49..b2bc1ff 100644
--- a/gdk-pixbuf/Makefile.am
+++ b/gdk-pixbuf/Makefile.am
@@ -513,7 +513,7 @@ noinst_LTLIBRARIES =                \
 builtin_objs = @INCLUDED_LOADER_OBJ@ $(STATIC_PIXDATA_LIB)
 
 DEPS = libgdk_pixbuf-$(GDK_PIXBUF_API_VERSION).la
-INCLUDES = \
+AM_CPPFLAGS = \
        -DG_LOG_DOMAIN=\"GdkPixbuf\"                                    \
        -DGDK_PIXBUF_COMPILATION                                        \
        -I$(top_srcdir) -I$(top_builddir)                               \
@@ -526,9 +526,10 @@ INCLUDES = \
        $(INCLUDED_LOADER_DEFINE)                                       \
        $(GDK_PIXBUF_DEBUG_FLAGS)                                       \
        $(GDK_PIXBUF_DEP_CFLAGS)                                        \
-       -DGDK_PIXBUF_ENABLE_BACKEND
+       -DGDK_PIXBUF_ENABLE_BACKEND                                     \
+       -DPIXBUF_LIBDIR=\"$(loaderdir)\"                                \
+       -DBUILT_MODULES_DIR=\"$(srcdir)/.libs\"
 
-AM_CPPFLAGS = "-DPIXBUF_LIBDIR=\"$(loaderdir)\"" "-DBUILT_MODULES_DIR=\"$(srcdir)/.libs\""
 LDADDS = libgdk_pixbuf-$(GDK_PIXBUF_API_VERSION).la $(GDK_PIXBUF_DEP_LIBS)
 
 noinst_PROGRAMS = test-gdk-pixbuf