better usage of default build rules

tests/Makefile

@@ -25,6 +25,7 @@ PYTHON ?= python3
 TESTARTEFACT := versionsTest
 
 DEBUGLEVEL ?= 1
+export DEBUGLEVEL  # transmit value to sub-makefiles
 DEBUGFLAGS  = -g -DDEBUGLEVEL=$(DEBUGLEVEL)
 CPPFLAGS   += -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/compress \
               -I$(ZSTDDIR)/dictBuilder -I$(ZSTDDIR)/deprecated -I$(PRGDIR)
@@ -77,21 +78,23 @@ FUZZERTEST ?= -T200s
 ZSTDRTTEST = --test-large-data
 DECODECORPUS_TESTTIME ?= -T30
 
-.PHONY: default all all32 allnothread dll clean test test32 test-all versionsTest
+.PHONY: default
-
 default: fullbench
-	@echo $(ZSTDMT_OBJECTS)
 
+.PHONY: all
 all: fullbench fuzzer zstreamtest paramgrill datagen decodecorpus roundTripCrash \
      fullbench-lib poolTests
 
+.PHONY: all32
 all32: fullbench32 fuzzer32 zstreamtest32
 
+.PHONY: allnothread
 allnothread: MULTITHREAD_CPP=
 allnothread: MULTITHREAD_LD=
 allnothread: fullbench fuzzer paramgrill datagen decodecorpus
 
 # note : broken : requires symbols unavailable from dynamic library
+.PHONY: dll
 dll: fuzzer-dll zstreamtest-dll
 
 .PHONY: zstd zstd32 zstd-nolegacy  # only external makefile knows how to build or update them
@@ -100,13 +103,13 @@ zstd zstd32 zstd-nolegacy:
 
 .PHONY: libzstd
 libzstd :
-	$(MAKE) -C $(ZSTDDIR) libzstd
+	$(MAKE) -C $(ZSTDDIR) libzstd MOREFLAGS+="$(DEBUGFLAGS)"
 
 %-dll : libzstd
 %-dll : LDFLAGS += -L$(ZSTDDIR) -lzstd
 
-.PHONY: zstd-staticLib
+.PHONY: $(ZSTDDIR)/libzstd.a
-zstd-staticLib :
+$(ZSTDDIR)/libzstd.a :
 	$(MAKE) -C $(ZSTDDIR) libzstd.a
 
 zstdm_%.o : $(ZSTDDIR)/common/%.c
@@ -135,12 +138,11 @@ fullbench fullbench32 : LDFLAGS += $(MULTITHREAD_LD)
 fullbench fullbench32 : DEBUGFLAGS = -DNDEBUG  # turn off assert() for speed measurements
 fullbench fullbench32 : $(ZSTD_FILES)
 fullbench fullbench32 : $(PRGDIR)/datagen.c $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/benchfn.c fullbench.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
+	$(LINK.c) $^ -o $@$(EXT)
 
 fullbench-lib : CPPFLAGS += -DXXH_NAMESPACE=ZSTD_
-fullbench-lib : zstd-staticLib
+fullbench-lib : $(PRGDIR)/datagen.c $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/benchfn.c $(ZSTDDIR)/libzstd.a fullbench.c
-fullbench-lib : $(PRGDIR)/datagen.c $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/benchfn.c fullbench.c
+	$(LINK.c) $^ -o $@$(EXT)
-	$(CC) $(FLAGS) $(filter %.c,$^) -o $@$(EXT) $(ZSTDDIR)/libzstd.a
 
 # note : broken : requires symbols unavailable from dynamic library
 fullbench-dll: $(PRGDIR)/datagen.c $(PRGDIR)/util.c $(PRGDIR)/benchfn.c $(PRGDIR)/timefn.c fullbench.c
@@ -153,7 +155,7 @@ fuzzer32: CFLAGS += -m32
 fuzzer  : $(ZSTDMT_OBJECTS)
 fuzzer32: $(ZSTD_FILES)
 fuzzer fuzzer32 : $(ZDICT_FILES) $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/datagen.c fuzzer.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
+	$(LINK.c) $^ -o $@$(EXT)
 
 # note : broken : requires symbols unavailable from dynamic library
 fuzzer-dll : $(ZSTDDIR)/common/xxhash.c $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/datagen.c fuzzer.c
@@ -177,66 +179,65 @@ zstreamtest zstreamtest32 : LDFLAGS += $(MULTITHREAD_LD)
 zstreamtest : $(ZSTDMT_OBJECTS) $(ZSTREAM_PROPER_FILES)
 zstreamtest32 : $(ZSTREAMFILES)
 zstreamtest zstreamtest32 :
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
+	$(LINK.c) $^ -o $@$(EXT)
 
 zstreamtest_asan : CFLAGS += -fsanitize=address
 zstreamtest_asan : $(ZSTREAMFILES)
-	$(CC) $(FLAGS) $(MULTITHREAD) $^ -o $@$(EXT)
+	$(LINK.c) $(MULTITHREAD) $^ -o $@$(EXT)
 
 zstreamtest_tsan : CFLAGS += -fsanitize=thread
 zstreamtest_tsan : $(ZSTREAMFILES)
-	$(CC) $(FLAGS) $(MULTITHREAD) $^ -o $@$(EXT)
+	$(LINK.c) $(MULTITHREAD) $^ -o $@$(EXT)
 
 # note : broken : requires symbols unavailable from dynamic library
 zstreamtest-dll : $(ZSTDDIR)/common/xxhash.c  # xxh symbols not exposed from dll
 zstreamtest-dll : $(ZSTREAM_LOCAL_FILES)
 	$(CC) $(CPPFLAGS) $(CFLAGS) $(filter %.c,$^) $(LDFLAGS) -o $@$(EXT)
 
-paramgrill : DEBUGFLAGS =  # turn off assert() by default for speed measurements
+paramgrill : DEBUGFLAGS =   # turn off debug for speed measurements
+paramgrill : LDLIBS += -lm
 paramgrill : $(ZSTD_FILES) $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/benchfn.c $(PRGDIR)/benchzstd.c $(PRGDIR)/datagen.c paramgrill.c
-	$(CC) $(FLAGS) $^ -lm -o $@$(EXT)
 
 datagen : $(PRGDIR)/datagen.c datagencli.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
+	$(LINK.c) $^ -o $@$(EXT)
 
+roundTripCrash: CFLAGS += $(MULTITHREAD)
 roundTripCrash : $(ZSTD_OBJECTS) roundTripCrash.c
-	$(CC) $(FLAGS) $(MULTITHREAD) $^ -o $@$(EXT)
 
-longmatch  : $(ZSTD_OBJECTS) longmatch.c
+longmatch : $(ZSTD_OBJECTS) longmatch.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
+bigdict: CFLAGS += $(MULTITHREAD)
 bigdict: $(ZSTDMT_OBJECTS) $(PRGDIR)/datagen.c bigdict.c
-	$(CC) $(FLAGS) $(MULTITHREAD) $^ -o $@$(EXT)
 
 invalidDictionaries : $(ZSTD_OBJECTS) invalidDictionaries.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
 legacy : CPPFLAGS += -I$(ZSTDDIR)/legacy -DZSTD_LEGACY_SUPPORT=4
 legacy : $(ZSTD_FILES) $(wildcard $(ZSTDDIR)/legacy/*.c) legacy.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
+decodecorpus : LDLIBS += -lm
 decodecorpus : $(filter-out zstdc_zstd_compress.o, $(ZSTD_OBJECTS)) $(ZDICT_FILES) $(PRGDIR)/util.c $(PRGDIR)/timefn.c decodecorpus.c
-	$(CC) $(FLAGS) $^ -o $@$(EXT) -lm
 
 poolTests : $(PRGDIR)/util.c $(PRGDIR)/timefn.c poolTests.c $(ZSTDDIR)/common/pool.c $(ZSTDDIR)/common/threading.c $(ZSTDDIR)/common/zstd_common.c $(ZSTDDIR)/common/error_private.c
-	$(CC) $(FLAGS) $(MULTITHREAD) $^ -o $@$(EXT)
+	$(LINK.c) $(MULTITHREAD) $^ -o $@$(EXT)
 
 .PHONY: versionsTest
 versionsTest: clean
 	$(PYTHON) test-zstd-versions.py
 
+.PHONY: automated_benchmarking
 automated_benchmarking: clean
 	$(PYTHON) automated_benchmarking.py
 
-checkTag: checkTag.c $(ZSTDDIR)/zstd.h
+# make checkTag
-	$(CC) $(FLAGS) $< -o $@$(EXT)
+checkTag.o : $(ZSTDDIR)/zstd.h
 
+.PHONY: clean
 clean:
 	$(MAKE) -C $(ZSTDDIR) clean
 	$(MAKE) -C $(PRGDIR) clean
-	@$(RM) -fR $(TESTARTEFACT)
+	$(RM) -fR $(TESTARTEFACT)
-	@$(RM) -rf tmp*  # some test directories are named tmp*
+	$(RM) -rf tmp*  # some test directories are named tmp*
-	@$(RM) core *.o *.tmp result* *.gcda dictionary *.zst \
+	$(RM) core *.o *.tmp result* *.gcda dictionary *.zst \
         $(PRGDIR)/zstd$(EXT) $(PRGDIR)/zstd32$(EXT) \
         fullbench$(EXT) fullbench32$(EXT) \
         fullbench-lib$(EXT) fullbench-dll$(EXT) \
@@ -293,9 +294,12 @@ list:
 	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$' | xargs
 
 .PHONY: shortest
-shortest: ZSTDRTTEST=
+shortest: ZSTDRTTEST=  # remove long tests
 shortest: test-zstd
 
+.PHONY: check
+check: shortest
+
 .PHONY: fuzztest
 fuzztest: test-fuzzer test-zstream test-decodecorpus
 
@@ -305,8 +309,10 @@ ifeq ($(QEMU_SYS),)
 test: test-pool
 endif
 
+.PHONY: test32
 test32: test-zstd32 test-fullbench32 test-fuzzer32 test-zstream32
 
+.PHONY: test-all
 test-all: test test32 valgrindTest test-decodecorpus-cli