tools/testing/selftests/kselftest_deps.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # kselftest_deps.sh
   4 #
   5 # Checks for kselftest build dependencies on the build system.
   6 # Copyright (c) 2020 Shuah Khan <skhan@linuxfoundation.org>
   7 #
   8 #
   9
  10 usage()
  11 {
  12
  13 echo -e "Usage: $0 -[p] <compiler> [test_name]\n"
  14 echo -e "\tkselftest_deps.sh [-p] gcc"
  15 echo -e "\tkselftest_deps.sh [-p] gcc vm"
  16 echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc"
  17 echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc vm\n"
  18 echo "- Should be run in selftests directory in the kernel repo."
  19 echo "- Checks if Kselftests can be built/cross-built on a system."
  20 echo "- Parses all test/sub-test Makefile to find library dependencies."
  21 echo "- Runs compile test on a trivial C file with LDLIBS specified"
  22 echo "  in the test Makefiles to identify missing library dependencies."
  23 echo "- Prints suggested target list for a system filtering out tests"
  24 echo "  failed the build dependency check from the TARGETS in Selftests"
  25 echo "  main Makefile when optional -p is specified."
  26 echo "- Prints pass/fail dependency check for each tests/sub-test."
  27 echo "- Prints pass/fail targets and libraries."
  28 echo "- Default: runs dependency checks on all tests."
  29 echo "- Optional test name can be specified to check dependencies for it."
  30 exit 1
  31
  32 }
  33
  34 # Start main()
  35 main()
  36 {
  37
  38 base_dir=`pwd`
  39 # Make sure we're in the selftests top-level directory.
  40 if [ $(basename "$base_dir") !=  "selftests" ]; then
  41         echo -e "\tPlease run $0 in"
  42         echo -e "\ttools/testing/selftests directory ..."
  43         exit 1
  44 fi
  45
  46 print_targets=0
  47
  48 while getopts "p" arg; do
  49     case $arg in
  50         p)
  51                 print_targets=1
  52         shift;;
  53     esac
  54 done
  55
  56 if [ $# -eq 0 ]
  57 then
  58         usage
  59 fi
  60
  61 # Compiler
  62 CC=$1
  63
  64 tmp_file=$(mktemp).c
  65 trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT
  66 #echo $tmp_file
  67
  68 pass=$(mktemp).out
  69 trap "rm -f $pass" EXIT
  70 #echo $pass
  71
  72 fail=$(mktemp).out
  73 trap "rm -f $fail" EXIT
  74 #echo $fail
  75
  76 # Generate tmp source fire for compile test
  77 cat << "EOF" > $tmp_file
  78 int main()
  79 {
  80 }
  81 EOF
  82
  83 # Save results
  84 total_cnt=0
  85 fail_trgts=()
  86 fail_libs=()
  87 fail_cnt=0
  88 pass_trgts=()
  89 pass_libs=()
  90 pass_cnt=0
  91
  92 # Get all TARGETS from selftests Makefile
  93 targets=$(egrep "^TARGETS +|^TARGETS =" Makefile | cut -d "=" -f2)
  94
  95 # Single test case
  96 if [ $# -eq 2 ]
  97 then
  98         test=$2/Makefile
  99
 100         l1_test $test
 101         l2_test $test
 102         l3_test $test
 103
 104         print_results $1 $2
 105         exit $?
 106 fi
 107
 108 # Level 1: LDLIBS set static.
 109 #
 110 # Find all LDLIBS set statically for all executables built by a Makefile
 111 # and filter out VAR_LDLIBS to discard the following:
 112 #       gpio/Makefile:LDLIBS += $(VAR_LDLIBS)
 113 # Append space at the end of the list to append more tests.
 114
 115 l1_tests=$(grep -r --include=Makefile "^LDLIBS" | \
 116                 grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
 117
 118 # Level 2: LDLIBS set dynamically.
 119 #
 120 # Level 2
 121 # Some tests have multiple valid LDLIBS lines for individual sub-tests
 122 # that need dependency checks. Find them and append them to the tests
 123 # e.g: vm/Makefile:$(OUTPUT)/userfaultfd: LDLIBS += -lpthread
 124 # Filter out VAR_LDLIBS to discard the following:
 125 #       memfd/Makefile:$(OUTPUT)/fuse_mnt: LDLIBS += $(VAR_LDLIBS)
 126 # Append space at the end of the list to append more tests.
 127
 128 l2_tests=$(grep -r --include=Makefile ": LDLIBS" | \
 129                 grep -v "VAR_LDLIBS" | awk -F: '{print $1}')
 130
 131 # Level 3
 132 # gpio,  memfd and others use pkg-config to find mount and fuse libs
 133 # respectively and save it in VAR_LDLIBS. If pkg-config doesn't find
 134 # any, VAR_LDLIBS set to default.
 135 # Use the default value and filter out pkg-config for dependency check.
 136 # e.g:
 137 # gpio/Makefile
 138 #       VAR_LDLIBS := $(shell pkg-config --libs mount) 2>/dev/null)
 139 # memfd/Makefile
 140 #       VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null)
 141
 142 l3_tests=$(grep -r --include=Makefile "^VAR_LDLIBS" | \
 143                 grep -v "pkg-config" | awk -F: '{print $1}')
 144
 145 #echo $l1_tests
 146 #echo $l2_1_tests
 147 #echo $l3_tests
 148
 149 all_tests
 150 print_results $1 $2
 151
 152 exit $?
 153 }
 154 # end main()
 155
 156 all_tests()
 157 {
 158         for test in $l1_tests; do
 159                 l1_test $test
 160         done
 161
 162         for test in $l2_tests; do
 163                 l2_test $test
 164         done
 165
 166         for test in $l3_tests; do
 167                 l3_test $test
 168         done
 169 }
 170
 171 # Use same parsing used for l1_tests and pick libraries this time.
 172 l1_test()
 173 {
 174         test_libs=$(grep --include=Makefile "^LDLIBS" $test | \
 175                         grep -v "VAR_LDLIBS" | \
 176                         sed -e 's/\:/ /' | \
 177                         sed -e 's/+/ /' | cut -d "=" -f 2)
 178
 179         check_libs $test $test_libs
 180 }
 181
 182 # Use same parsing used for l2__tests and pick libraries this time.
 183 l2_test()
 184 {
 185         test_libs=$(grep --include=Makefile ": LDLIBS" $test | \
 186                         grep -v "VAR_LDLIBS" | \
 187                         sed -e 's/\:/ /' | sed -e 's/+/ /' | \
 188                         cut -d "=" -f 2)
 189
 190         check_libs $test $test_libs
 191 }
 192
 193 l3_test()
 194 {
 195         test_libs=$(grep --include=Makefile "^VAR_LDLIBS" $test | \
 196                         grep -v "pkg-config" | sed -e 's/\:/ /' |
 197                         sed -e 's/+/ /' | cut -d "=" -f 2)
 198
 199         check_libs $test $test_libs
 200 }
 201
 202 check_libs()
 203 {
 204
 205 if [[ ! -z "${test_libs// }" ]]
 206 then
 207
 208         #echo $test_libs
 209
 210         for lib in $test_libs; do
 211
 212         let total_cnt+=1
 213         $CC -o $tmp_file.bin $lib $tmp_file > /dev/null 2>&1
 214         if [ $? -ne 0 ]; then
 215                 echo "FAIL: $test dependency check: $lib" >> $fail
 216                 let fail_cnt+=1
 217                 fail_libs+="$lib "
 218                 fail_target=$(echo "$test" | cut -d "/" -f1)
 219                 fail_trgts+="$fail_target "
 220                 targets=$(echo "$targets" | grep -v "$fail_target")
 221         else
 222                 echo "PASS: $test dependency check passed $lib" >> $pass
 223                 let pass_cnt+=1
 224                 pass_libs+="$lib "
 225                 pass_trgts+="$(echo "$test" | cut -d "/" -f1) "
 226         fi
 227
 228         done
 229 fi
 230 }
 231
 232 print_results()
 233 {
 234         echo -e "========================================================";
 235         echo -e "Kselftest Dependency Check for [$0 $1 $2] results..."
 236
 237         if [ $print_targets -ne 0 ]
 238         then
 239         echo -e "Suggested Selftest Targets for your configuration:"
 240         echo -e "$targets";
 241         fi
 242
 243         echo -e "========================================================";
 244         echo -e "Checked tests defining LDLIBS dependencies"
 245         echo -e "--------------------------------------------------------";
 246         echo -e "Total tests with Dependencies:"
 247         echo -e "$total_cnt Pass: $pass_cnt Fail: $fail_cnt";
 248
 249         if [ $pass_cnt -ne 0 ]; then
 250         echo -e "--------------------------------------------------------";
 251         cat $pass
 252         echo -e "--------------------------------------------------------";
 253         echo -e "Targets passed build dependency check on system:"
 254         echo -e "$(echo "$pass_trgts" | xargs -n1 | sort -u | xargs)"
 255         fi
 256
 257         if [ $fail_cnt -ne 0 ]; then
 258         echo -e "--------------------------------------------------------";
 259         cat $fail
 260         echo -e "--------------------------------------------------------";
 261         echo -e "Targets failed build dependency check on system:"
 262         echo -e "$(echo "$fail_trgts" | xargs -n1 | sort -u | xargs)"
 263         echo -e "--------------------------------------------------------";
 264         echo -e "Missing libraries system"
 265         echo -e "$(echo "$fail_libs" | xargs -n1 | sort -u | xargs)"
 266         fi
 267
 268         echo -e "--------------------------------------------------------";
 269         echo -e "========================================================";
 270 }
 271
 272 main "$@"