Option to use shared library for BLIS tests

Current BLIS makefile always uses the static library on Linux for
all BLIS test programs. This commit adds the option to use the shared
library instead by specifying e.g.

make checkblis USE_SHARED=yes

Executables are generated in different sub-directories for static
and shared libraries.

AMD-Internal: [CPUPL-4107]
Change-Id: I3ab5d505cfbc5f6ef47aa28fcbb846c52d56c3f2

vendor/testcpp/Makefile

@@ -3,7 +3,7 @@
 #  libraries.
 #
 #  Copyright (C) 2014, The University of Texas at Austin
-#  Copyright (C) 2017 - 2021, Advanced Micro Devices, Inc.
+#  Copyright (C) 2017-2023, Advanced Micro Devices, Inc. All rights reserved.
 #
 #  Redistribution and use in source and binary forms, with or without
 #  modification, are permitted provided that the following conditions are
@@ -142,8 +142,7 @@ LIBBLIS_LINK   := $(LIB_PATH)/$(LIBBLIS_L)
 #
 all: blis 
 
-
-blis: test_asum_blis.x \
+CPPEXES := test_asum_blis.x \
 	test_axpy_blis.x \
 	test_copy_blis.x \
 	test_dot_blis.x \
@@ -183,8 +182,10 @@ blis: test_asum_blis.x \
 	test_trmm_blis.x \
 	test_trsm_blis.x \
 	test_trsv_blis.x 
- 
 
+CPPEXES := $(addprefix $(MK_USE_LIB)/,$(CPPEXES))
+
+blis: $(CPPEXES)
 
 # --Object file rules --
 
@@ -197,7 +198,8 @@ test_%_blis.o: test_%.cc
 
 # -- Executable file rules --
 
-test_%_blis.x: test_%_blis.o $(LIBBLIS_LINK)
+$(MK_USE_LIB)/test_%_blis.x: test_%_blis.o $(LIBBLIS_LINK)
+	@mkdir -p ./$(MK_USE_LIB)
 	@$(LINKER) $^       $(LIBBLIS_LINK) $(LDFLAGS) -o $@
 	./$@
 
@@ -206,5 +208,5 @@ test_%_blis.x: test_%_blis.o $(LIBBLIS_LINK)
 clean: cleanx
 
 cleanx:
-	- $(RM_F) *.o *.x
+	- $(RM_F) ./*.o ./{shared,static}/*.x