build: remove \r from shader files before compilation.

src/Makefile.am

@@ -57,7 +57,7 @@ SUFFIXES = .lolfx
 %.lolfx.cpp: %.lolfx
 	echo "/* This file was autogenerated. DO NOT MODIFY IT. */" > $@.tmp
 	echo "char const *lolfx_$(notdir $(^:%.lolfx=%)) =" >> $@.tmp
-	$(SED) 's/"/\\"/g' $^ | $(SED) 's/.*/"&\\n"/' >> $@.tmp
+	$(SED) 's/"/\\"/g' $^ | $(SED) 's/\([^\r]*\).*/"\1\\n"/' >> $@.tmp
 	echo ";" >> $@.tmp
 	mv $@.tmp $@
 

test/tutorial/Makefile.am

@@ -15,7 +15,7 @@ SUFFIXES = .lolfx
 %.lolfx.cpp: %.lolfx
 	echo "/* This file was autogenerated. DO NOT MODIFY IT. */" > $@.tmp
 	echo "char const *lolfx_$(notdir $(^:%.lolfx=%)) =" >> $@.tmp
-	$(SED) 's/"/\\"/g' $^ | $(SED) 's/.*/"&\\n"/' >> $@.tmp
+	$(SED) 's/"/\\"/g' $^ | $(SED) 's/\([^\r]*\).*/"\1\\n"/' >> $@.tmp
 	echo ";" >> $@.tmp
 	mv $@.tmp $@