add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/kselftest_deps.sh
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@@ -46,11 +46,11 @@
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 print_targets=0
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 while getopts "p" arg; do
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-    case $arg in
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-        p)
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+	case $arg in
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+		p)
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 		print_targets=1
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 	shift;;
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-    esac
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+	esac
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 done
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 if [ $# -eq 0 ]
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@@ -92,6 +92,10 @@
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 # Get all TARGETS from selftests Makefile
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 targets=$(egrep "^TARGETS +|^TARGETS =" Makefile | cut -d "=" -f2)
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+# Initially, in LDLIBS related lines, the dep checker needs
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+# to ignore lines containing the following strings:
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+filter="\$(VAR_LDLIBS)\|pkg-config\|PKG_CONFIG\|IOURING_EXTRA_LIBS"
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+
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 # Single test case
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 if [ $# -eq 2 ]
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 then
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@@ -100,6 +104,8 @@
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 	l1_test $test
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 	l2_test $test
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 	l3_test $test
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+	l4_test $test
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+	l5_test $test
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 	print_results $1 $2
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 	exit $?
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@@ -113,7 +119,7 @@
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 # Append space at the end of the list to append more tests.
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 l1_tests=$(grep -r --include=Makefile "^LDLIBS" | \
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-		grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
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+		grep -v "$filter" | awk -F: '{print $1}' | uniq)
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 # Level 2: LDLIBS set dynamically.
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 #
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@@ -126,7 +132,7 @@
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 # Append space at the end of the list to append more tests.
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 l2_tests=$(grep -r --include=Makefile ": LDLIBS" | \
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-		grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
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+		grep -v "$filter" | awk -F: '{print $1}' | uniq)
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 # Level 3
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 # gpio,  memfd and others use pkg-config to find mount and fuse libs
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@@ -140,11 +146,32 @@
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 #	VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null)
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 l3_tests=$(grep -r --include=Makefile "^VAR_LDLIBS" | \
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-		grep -v "pkg-config" | awk -F: '{print $1}')
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+		grep -v "pkg-config\|PKG_CONFIG" | awk -F: '{print $1}' | uniq)
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-#echo $l1_tests
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-#echo $l2_1_tests
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-#echo $l3_tests
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+# Level 4
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+# some tests may fall back to default using `|| echo -l<libname>`
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+# if pkg-config doesn't find the libs, instead of using VAR_LDLIBS
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+# as per level 3 checks.
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+# e.g:
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+# netfilter/Makefile
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+#	LDLIBS += $(shell $(HOSTPKG_CONFIG) --libs libmnl 2>/dev/null || echo -lmnl)
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+l4_tests=$(grep -r --include=Makefile "^LDLIBS" | \
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+		grep "pkg-config\|PKG_CONFIG" | awk -F: '{print $1}' | uniq)
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+
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+# Level 5
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+# some tests may use IOURING_EXTRA_LIBS to add extra libs to LDLIBS,
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+# which in turn may be defined in a sub-Makefile
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+# e.g.:
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+# mm/Makefile
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+#	$(OUTPUT)/gup_longterm: LDLIBS += $(IOURING_EXTRA_LIBS)
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+l5_tests=$(grep -r --include=Makefile "LDLIBS +=.*\$(IOURING_EXTRA_LIBS)" | \
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+	awk -F: '{print $1}' | uniq)
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+
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+#echo l1_tests $l1_tests
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+#echo l2_tests $l2_tests
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+#echo l3_tests $l3_tests
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+#echo l4_tests $l4_tests
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+#echo l5_tests $l5_tests
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 all_tests
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 print_results $1 $2
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@@ -166,24 +193,32 @@
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 	for test in $l3_tests; do
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 		l3_test $test
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 	done
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+
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+	for test in $l4_tests; do
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+		l4_test $test
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+	done
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+
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+	for test in $l5_tests; do
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+		l5_test $test
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+	done
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 }
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 # Use same parsing used for l1_tests and pick libraries this time.
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 l1_test()
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 {
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 	test_libs=$(grep --include=Makefile "^LDLIBS" $test | \
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-			grep -v "VAR_LDLIBS" | \
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+			grep -v "$filter" | \
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 			sed -e 's/\:/ /' | \
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 			sed -e 's/+/ /' | cut -d "=" -f 2)
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 	check_libs $test $test_libs
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 }
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-# Use same parsing used for l2__tests and pick libraries this time.
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+# Use same parsing used for l2_tests and pick libraries this time.
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 l2_test()
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 {
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 	test_libs=$(grep --include=Makefile ": LDLIBS" $test | \
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-			grep -v "VAR_LDLIBS" | \
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+			grep -v "$filter" | \
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 			sed -e 's/\:/ /' | sed -e 's/+/ /' | \
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 			cut -d "=" -f 2)
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@@ -199,6 +234,24 @@
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 	check_libs $test $test_libs
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 }
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+l4_test()
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+{
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+	test_libs=$(grep --include=Makefile "^VAR_LDLIBS\|^LDLIBS" $test | \
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+			grep "\(pkg-config\|PKG_CONFIG\).*|| echo " | \
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+			sed -e 's/.*|| echo //' | sed -e 's/)$//')
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+
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+	check_libs $test $test_libs
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+}
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+
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+l5_test()
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+{
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+	tests=$(find $(dirname "$test") -type f -name "*.mk")
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+	test_libs=$(grep "^IOURING_EXTRA_LIBS +\?=" $tests | \
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+			cut -d "=" -f 2)
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+
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+	check_libs $test $test_libs
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+}
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+
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 check_libs()
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 {
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