Thanks to Kornel for noticing.
We cannot use ${x} style variables with autotools, these work only in the
final Makefile. We need to use $(x).
images/psnfss3.png \
images/psnfss4.png \
images/standard.png \
- ${dist_images_DATA1X} \
- ${dist_images_DATA2X} \
- ${dist_images_DATA3X}
+ $(dist_images_DATA1X) \
+ $(dist_images_DATA2X) \
+ $(dist_images_DATA3X)
imagesmathdir = $(imagesdir)/math
dist_imagesmath_DATA = \
dist_imagesoxygen_DATA = \
images/oxygen/iconsize.png \
- ${dist_imagesoxygen_DATA1X}
+ $(dist_imagesoxygen_DATA1X)
imagesmathoxygendir = $(imagesdir)/math/oxygen
dist_imagesmathoxygen_DATA = \