--- /dev/null
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# kselftest_deps.sh
+#
+# Checks for kselftest build dependencies on the build system.
+# Copyright (c) 2020 Shuah Khan <skhan@linuxfoundation.org>
+#
+#
+
+usage()
+{
+
+echo -e "Usage: $0 -[p] <compiler> [test_name]\n"
+echo -e "\tkselftest_deps.sh [-p] gcc"
+echo -e "\tkselftest_deps.sh [-p] gcc vm"
+echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc"
+echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc vm\n"
+echo "- Should be run in selftests directory in the kernel repo."
+echo "- Checks if Kselftests can be built/cross-built on a system."
+echo "- Parses all test/sub-test Makefile to find library dependencies."
+echo "- Runs compile test on a trivial C file with LDLIBS specified"
+echo " in the test Makefiles to identify missing library dependencies."
+echo "- Prints suggested target list for a system filtering out tests"
+echo " failed the build dependency check from the TARGETS in Selftests"
+echo " main Makefile when optional -p is specified."
+echo "- Prints pass/fail dependency check for each tests/sub-test."
+echo "- Prints pass/fail targets and libraries."
+echo "- Default: runs dependency checks on all tests."
+echo "- Optional test name can be specified to check dependencies for it."
+exit 1
+
+}
+
+# Start main()
+main()
+{
+
+base_dir=`pwd`
+# Make sure we're in the selftests top-level directory.
+if [ $(basename "$base_dir") != "selftests" ]; then
+ echo -e "\tPlease run $0 in"
+ echo -e "\ttools/testing/selftests directory ..."
+ exit 1
+fi
+
+print_targets=0
+
+while getopts "p" arg; do
+ case $arg in
+ p)
+ print_targets=1
+ shift;;
+ esac
+done
+
+if [ $# -eq 0 ]
+then
+ usage
+fi
+
+# Compiler
+CC=$1
+
+tmp_file=$(mktemp).c
+trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT
+#echo $tmp_file
+
+pass=$(mktemp).out
+trap "rm -f $pass" EXIT
+#echo $pass
+
+fail=$(mktemp).out
+trap "rm -f $fail" EXIT
+#echo $fail
+
+# Generate tmp source fire for compile test
+cat << "EOF" > $tmp_file
+int main()
+{
+}
+EOF
+
+# Save results
+total_cnt=0
+fail_trgts=()
+fail_libs=()
+fail_cnt=0
+pass_trgts=()
+pass_libs=()
+pass_cnt=0
+
+# Get all TARGETS from selftests Makefile
+targets=$(egrep "^TARGETS +|^TARGETS =" Makefile | cut -d "=" -f2)
+
+# Single test case
+if [ $# -eq 2 ]
+then
+ test=$2/Makefile
+
+ l1_test $test
+ l2_test $test
+ l3_test $test
+
+ print_results $1 $2
+ exit $?
+fi
+
+# Level 1: LDLIBS set static.
+#
+# Find all LDLIBS set statically for all executables built by a Makefile
+# and filter out VAR_LDLIBS to discard the following:
+# gpio/Makefile:LDLIBS += $(VAR_LDLIBS)
+# Append space at the end of the list to append more tests.
+
+l1_tests=$(grep -r --include=Makefile "^LDLIBS" | \
+ grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
+
+# Level 2: LDLIBS set dynamically.
+#
+# Level 2
+# Some tests have multiple valid LDLIBS lines for individual sub-tests
+# that need dependency checks. Find them and append them to the tests
+# e.g: vm/Makefile:$(OUTPUT)/userfaultfd: LDLIBS += -lpthread
+# Filter out VAR_LDLIBS to discard the following:
+# memfd/Makefile:$(OUTPUT)/fuse_mnt: LDLIBS += $(VAR_LDLIBS)
+# Append space at the end of the list to append more tests.
+
+l2_tests=$(grep -r --include=Makefile ": LDLIBS" | \
+ grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
+
+# Level 3
+# gpio, memfd and others use pkg-config to find mount and fuse libs
+# respectively and save it in VAR_LDLIBS. If pkg-config doesn't find
+# any, VAR_LDLIBS set to default.
+# Use the default value and filter out pkg-config for dependency check.
+# e.g:
+# gpio/Makefile
+# VAR_LDLIBS := $(shell pkg-config --libs mount) 2>/dev/null)
+# memfd/Makefile
+# VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null)
+
+l3_tests=$(grep -r --include=Makefile "^VAR_LDLIBS" | \
+ grep -v "pkg-config" | awk -F: '{print $1}')
+
+#echo $l1_tests
+#echo $l2_1_tests
+#echo $l3_tests
+
+all_tests
+print_results $1 $2
+
+exit $?
+}
+# end main()
+
+all_tests()
+{
+ for test in $l1_tests; do
+ l1_test $test
+ done
+
+ for test in $l2_tests; do
+ l2_test $test
+ done
+
+ for test in $l3_tests; do
+ l3_test $test
+ done
+}
+
+# Use same parsing used for l1_tests and pick libraries this time.
+l1_test()
+{
+ test_libs=$(grep --include=Makefile "^LDLIBS" $test | \
+ grep -v "VAR_LDLIBS" | \
+ sed -e 's/\:/ /' | \
+ sed -e 's/+/ /' | cut -d "=" -f 2)
+
+ check_libs $test $test_libs
+}
+
+# Use same parsing used for l2__tests and pick libraries this time.
+l2_test()
+{
+ test_libs=$(grep --include=Makefile ": LDLIBS" $test | \
+ grep -v "VAR_LDLIBS" | \
+ sed -e 's/\:/ /' | sed -e 's/+/ /' | \
+ cut -d "=" -f 2)
+
+ check_libs $test $test_libs
+}
+
+l3_test()
+{
+ test_libs=$(grep --include=Makefile "^VAR_LDLIBS" $test | \
+ grep -v "pkg-config" | sed -e 's/\:/ /' |
+ sed -e 's/+/ /' | cut -d "=" -f 2)
+
+ check_libs $test $test_libs
+}
+
+check_libs()
+{
+
+if [[ ! -z "${test_libs// }" ]]
+then
+
+ #echo $test_libs
+
+ for lib in $test_libs; do
+
+ let total_cnt+=1
+ $CC -o $tmp_file.bin $lib $tmp_file > /dev/null 2>&1
+ if [ $? -ne 0 ]; then
+ echo "FAIL: $test dependency check: $lib" >> $fail
+ let fail_cnt+=1
+ fail_libs+="$lib "
+ fail_target=$(echo "$test" | cut -d "/" -f1)
+ fail_trgts+="$fail_target "
+ targets=$(echo "$targets" | grep -v "$fail_target")
+ else
+ echo "PASS: $test dependency check passed $lib" >> $pass
+ let pass_cnt+=1
+ pass_libs+="$lib "
+ pass_trgts+="$(echo "$test" | cut -d "/" -f1) "
+ fi
+
+ done
+fi
+}
+
+print_results()
+{
+ echo -e "========================================================";
+ echo -e "Kselftest Dependency Check for [$0 $1 $2] results..."
+
+ if [ $print_targets -ne 0 ]
+ then
+ echo -e "Suggested Selftest Targets for your configuration:"
+ echo -e "$targets";
+ fi
+
+ echo -e "========================================================";
+ echo -e "Checked tests defining LDLIBS dependencies"
+ echo -e "--------------------------------------------------------";
+ echo -e "Total tests with Dependencies:"
+ echo -e "$total_cnt Pass: $pass_cnt Fail: $fail_cnt";
+
+ if [ $pass_cnt -ne 0 ]; then
+ echo -e "--------------------------------------------------------";
+ cat $pass
+ echo -e "--------------------------------------------------------";
+ echo -e "Targets passed build dependency check on system:"
+ echo -e "$(echo "$pass_trgts" | xargs -n1 | sort -u | xargs)"
+ fi
+
+ if [ $fail_cnt -ne 0 ]; then
+ echo -e "--------------------------------------------------------";
+ cat $fail
+ echo -e "--------------------------------------------------------";
+ echo -e "Targets failed build dependency check on system:"
+ echo -e "$(echo "$fail_trgts" | xargs -n1 | sort -u | xargs)"
+ echo -e "--------------------------------------------------------";
+ echo -e "Missing libraries system"
+ echo -e "$(echo "$fail_libs" | xargs -n1 | sort -u | xargs)"
+ fi
+
+ echo -e "--------------------------------------------------------";
+ echo -e "========================================================";
+}
+
+main "$@"
projects / openwrt / staging / blogic.git / commitdiff