## credits: 01..13.c from the pcc cpp-tests suite# TOP = ../..include $(TOP)/MakefileSRC = $(TOPSRC)/tests/ppVPATH = $(SRC) files = $(patsubst %.$1,%.test,$(notdir $(wildcard $(SRC)/*.$1)))TESTS = $(call files,c) $(call files,S) all test testspp.all: $(sort $(TESTS)) DIFF_OPTS = -Nu -b -B # Filter source directory in warnings/errors (out-of-tree builds)FILTER = 2>&1 | sed 's,$(SRC)/,,g' %.test: %.c %.expect	@echo PPTest $* ...	-@$(TCC) -E -P $< $(FILTER) >$*.output 2>&1 ; \	    diff $(DIFF_OPTS) $(SRC)/$*.expect $*.output \	    && rm -f $*.output %.test: %.S %.expect	@echo PPTest $* ...	-@$(TCC) -E -P $< $(FILTER) >$*.output 2>&1 ; \	    diff $(DIFF_OPTS) $(SRC)/$*.expect $*.output \	    && rm -f $*.output testspp.%: %.test ; # automatically generate .expect files with gcc:%.expect: # %.c	gcc -E -P $*.[cS] >$*.expect 2>&1 # tell make not to delete.PRECIOUS: %.expect clean:	rm -f *.output 02.test : DIFF_OPTS += -w# 15.test : DIFF_OPTS += -I"^XXX:" # diff options:# -b ighore space changes# -w ighore all whitespace# -B ignore blank lines# -I <RE> ignore lines matching RE