Add Makefile template for GNU API tests

Signed-off-by: Jerry Zhang Jian <jerry.zhangjian@sifive.com>

gnu-test-setup/Makefile.gnu

@@ -0,0 +1,60 @@
+TESTSUITE ?= TESTSUITE_PATH
+RUNTEST := $(shell command -v runtest || echo "")
+
+ifeq ($(RUNTEST),)
+$(error "Error: runtest not found in PATH")
+endif
+
+# SELECTED_TEST is similar to $(EXP)=$(TEST), this is easier for
+# test-driver to pass the options
+# Please see "How can you run the testsuite on selected tests?" secion in
+#  https://gcc.gnu.org/install/test.html
+# to find how to select tests.
+SELECTED_TEST:=
+
+TEST_TARGET:=gcc g++
+PWD:=$(shell pwd)
+
+.PHONY: all check clean
+
+
+all: $(addsuffix .sum, $(TEST_TARGET))
+
+check: all
+
+gcc-parallel-%: site.exp
+	mkdir -p gcc/$@
+	cp site.exp gcc/$@
+	sed -i 's/set tmpdir.*/set tmpdir "$(subst /,\/,$(PWD))\/gcc\/$@"/g' $(PWD)/gcc/$@/site.exp
+	-cd gcc/$@ && $(RUNTEST) --tool gcc $(RUNTESTFLAGS) $(SELECTED_TEST)
+	touch $$GCC_RUNTEST_PARALLELIZE_DIR/finished
+
+g++-parallel-%: site.exp
+	mkdir -p g++/$@
+	cp site.exp g++/$@
+	sed -i 's/set tmpdir.*/set tmpdir "$(subst /,\/,$(PWD))\/g++\/$@"/g' $(PWD)/g++/$@/site.exp
+	-cd g++/$@ && $(RUNTEST) --tool g++ $(RUNTESTFLAGS) $(SELECTED_TEST)
+	touch $$GCC_RUNTEST_PARALLELIZE_DIR/finished
+
+gcc.sum: site.exp
+	rm -rf $(PWD)/gcc/gcc-parallel
+	mkdir -p $(PWD)/gcc/gcc-parallel
+	export GCC_RUNTEST_PARALLELIZE_DIR=$(PWD)/gcc/gcc-parallel; \
+	$(MAKE) $(addprefix gcc-parallel-,$(shell seq 40))
+	-cd gcc && python3 $(TESTSUITE)/dg-extract-results.py -L */gcc.log > gcc.log
+	-cd gcc && python3 $(TESTSUITE)/dg-extract-results.py */gcc.sum > gcc.sum
+	cp gcc/gcc.log .
+	cp gcc/gcc.sum .
+
+g++.sum: site.exp
+	rm -rf $(PWD)/g++/g++-parallel
+	mkdir -p $(PWD)/g++/g++-parallel
+	export GCC_RUNTEST_PARALLELIZE_DIR=$(PWD)/g++/g++-parallel; \
+	$(MAKE) $(addprefix g++-parallel-,$(shell seq 40))
+	-cd g++ && python3 $(TESTSUITE)/dg-extract-results.py -L */g++.log > g++.log
+	-cd g++ && python3 $(TESTSUITE)/dg-extract-results.py */g++.sum > g++.sum
+	cp g++/g++.log .
+	cp g++/g++.sum .
+
+clean:
+	rm -rf *.log *.sum *.bc *.s gcc g++