X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=Makefile;h=915cfcdb9ff75c271d3144b6df91a80dfef498ae;hb=f523436504952436ae434f300421f72f2b2e829f;hp=74e9bd3e7b9cc62ebc92abdfc43d45ee43ba9dc4;hpb=d60a9219fe02af560d2cde7b5a1ac9b2987da767;p=phd-thesis.git

diff --git a/Makefile b/Makefile
index 74e9bd3..915cfcd 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,12 @@
 	convert $< -set colorspace Gray -separate -average $@
 %g.png: %.png
 	convert $< -set colorspace Gray -separate -average $@
+%g.pdf: %.pdf
+	gs \
+		-sDEVICE=pdfwrite \
+		-sProcessColorModel=DeviceGray \
+		-sColorConversionStrategy=Gray \
+		-dOverrideICC \
+		-dCompatibilityLevel=1.5 \
+		-o $@ \
+		-f $<