ceph/src/seastar/dpdk/devtools/check-includes.sh

   1 #!/bin/sh -e
   2 #
   3 #   BSD LICENSE
   4 #
   5 #   Copyright 2016 6WIND S.A.
   6 #
   7 #   Redistribution and use in source and binary forms, with or without
   8 #   modification, are permitted provided that the following conditions
   9 #   are met:
  10 #
  11 #     * Redistributions of source code must retain the above copyright
  12 #       notice, this list of conditions and the following disclaimer.
  13 #     * Redistributions in binary form must reproduce the above copyright
  14 #       notice, this list of conditions and the following disclaimer in
  15 #       the documentation and/or other materials provided with the
  16 #       distribution.
  17 #     * Neither the name of 6WIND S.A. nor the names of its
  18 #       contributors may be used to endorse or promote products derived
  19 #       from this software without specific prior written permission.
  20 #
  21 #   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22 #   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23 #   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24 #   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25 #   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26 #   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27 #   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28 #   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29 #   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30 #   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31 #   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32
  33 # This script checks that header files in a given directory do not miss
  34 # dependencies when included on their own, do not conflict and accept being
  35 # compiled with the strictest possible flags.
  36 #
  37 # Files are looked up in the directory provided as the first argument,
  38 # otherwise build/include by default.
  39 #
  40 # Recognized environment variables:
  41 #
  42 # VERBOSE=1 is the same as -v.
  43 #
  44 # QUIET=1 is the same as -q.
  45 #
  46 # SUMMARY=1 is the same as -s.
  47 #
  48 # CC, CPPFLAGS, CFLAGS, EXTRA_CPPFLAGS, EXTRA_CFLAGS, CXX, CXXFLAGS and
  49 # EXTRA_CXXFLAGS are taken into account.
  50 #
  51 # PEDANTIC_CFLAGS, PEDANTIC_CXXFLAGS and PEDANTIC_CPPFLAGS provide strict
  52 # C/C++ compilation flags.
  53 #
  54 # IGNORE contains a list of shell patterns matching files (relative to the
  55 # include directory) to avoid. It is set by default to known DPDK headers
  56 # which must not be included on their own.
  57 #
  58 # IGNORE_CXX provides additional files for C++.
  59
  60 while getopts hqvs arg; do
  61         case $arg in
  62         h)
  63                 cat <<EOF
  64 usage: $0 [-h] [-q] [-v] [-s] [DIR]
  65
  66 This script checks that header files in a given directory do not miss
  67 dependencies when included on their own, do not conflict and accept being
  68 compiled with the strictest possible flags.
  69
  70   -h    display this help and exit
  71   -q    quiet mode, disable normal output
  72   -v    show command lines being executed
  73   -s    show summary
  74
  75 With no DIR, default to build/include.
  76
  77 Any failed header check yields a nonzero exit status.
  78 EOF
  79                 exit
  80                 ;;
  81         q)
  82                 QUIET=1
  83                 ;;
  84         v)
  85                 VERBOSE=1
  86                 ;;
  87         s)
  88                 SUMMARY=1
  89                 ;;
  90         *)
  91                 exit 1
  92                 ;;
  93         esac
  94 done
  95
  96 shift $(($OPTIND - 1))
  97
  98 include_dir=${1:-build/include}
  99
 100 : ${PEDANTIC_CFLAGS=-std=c99 -pedantic -Wall -Wextra -Werror}
 101 : ${PEDANTIC_CXXFLAGS=}
 102 : ${PEDANTIC_CPPFLAGS=-D_XOPEN_SOURCE=600}
 103 : ${CC:=cc}
 104 : ${CXX:=c++}
 105 : ${IGNORE= \
 106         'rte_atomic_32.h' \
 107         'rte_atomic_64.h' \
 108         'rte_byteorder_32.h' \
 109         'rte_byteorder_64.h' \
 110         'generic/*' \
 111         'exec-env/*' \
 112         'rte_vhost.h' \
 113         'rte_eth_vhost.h' \
 114 }
 115 : ${IGNORE_CXX= \
 116         'rte_vhost.h' \
 117         'rte_eth_vhost.h' \
 118 }
 119
 120 temp_cc=/tmp/${0##*/}.$$.c
 121 pass_cc=
 122 failures_cc=0
 123
 124 temp_cxx=/tmp/${0##*/}.$$.cc
 125 pass_cxx=
 126 failures_cxx=0
 127
 128 # Process output parameters.
 129
 130 [ "$QUIET" = 1 ] &&
 131 exec 1> /dev/null
 132
 133 [ "$VERBOSE" = 1 ] &&
 134 output ()
 135 {
 136         local CCV
 137         local CXXV
 138
 139         shift
 140         CCV=$CC
 141         CXXV=$CXX
 142         CC="echo $CC" CXX="echo $CXX" "$@"
 143         CC=$CCV
 144         CXX=$CXXV
 145
 146         "$@"
 147 } ||
 148 output ()
 149 {
 150
 151         printf '  %s\n' "$1"
 152         shift
 153         "$@"
 154 }
 155
 156 trap 'rm -f "$temp_cc" "$temp_cxx"' EXIT
 157
 158 compile_cc ()
 159 {
 160         ${CC} -I"$include_dir" \
 161                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 162                 ${PEDANTIC_CFLAGS} ${CFLAGS} ${EXTRA_CFLAGS} \
 163                 -c -o /dev/null "${temp_cc}"
 164 }
 165
 166 compile_cxx ()
 167 {
 168         ${CXX} -I"$include_dir" \
 169                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 170                 ${PEDANTIC_CXXFLAGS} ${CXXFLAGS} ${EXTRA_CXXFLAGS} \
 171                 -c -o /dev/null "${temp_cxx}"
 172 }
 173
 174 ignore ()
 175 {
 176         file="$1"
 177         shift
 178         while [ $# -ne 0 ]; do
 179                 case "$file" in
 180                 $1)
 181                         return 0
 182                         ;;
 183                 esac
 184                 shift
 185         done
 186         return 1
 187 }
 188
 189 # Check C/C++ compilation for each header file.
 190
 191 while read -r path
 192 do
 193         file=${path#$include_dir}
 194         file=${file##/}
 195         if ignore "$file" $IGNORE; then
 196                 output "SKIP $file" :
 197                 continue
 198         fi
 199         if printf "\
 200 #include <%s>
 201
 202 int main(void)
 203 {
 204         return 0;
 205 }
 206 " "$file" > "$temp_cc" &&
 207                 output "CC $file" compile_cc
 208         then
 209                 pass_cc="$pass_cc $file"
 210         else
 211                 failures_cc=$(($failures_cc + 1))
 212         fi
 213         if ignore "$file" $IGNORE_CXX; then
 214                 output "SKIP CXX $file" :
 215                 continue
 216         fi
 217         if printf "\
 218 #include <%s>
 219
 220 int main()
 221 {
 222 }
 223 " "$file" > "$temp_cxx" &&
 224                 output "CXX $file" compile_cxx
 225         then
 226                 pass_cxx="$pass_cxx $file"
 227         else
 228                 failures_cxx=$(($failures_cxx + 1))
 229         fi
 230 done <<EOF
 231 $(find "$include_dir" -name '*.h')
 232 EOF
 233
 234 # Check C compilation with all includes.
 235
 236 : > "$temp_cc" &&
 237 for file in $pass_cc; do
 238         printf "\
 239 #include <%s>
 240 " "$file" >> $temp_cc
 241 done
 242 if printf "\
 243 int main(void)
 244 {
 245         return 0;
 246 }
 247 " >> "$temp_cc" &&
 248         output "CC (all includes that did not fail)" compile_cc
 249 then
 250         :
 251 else
 252         failures_cc=$(($failures_cc + 1))
 253 fi
 254
 255 # Check C++ compilation with all includes.
 256
 257 : > "$temp_cxx" &&
 258 for file in $pass_cxx; do
 259         printf "\
 260 #include <%s>
 261 " "$file" >> $temp_cxx
 262 done
 263 if printf "\
 264 int main()
 265 {
 266 }
 267 " >> "$temp_cxx" &&
 268         output "CXX (all includes that did not fail)" compile_cxx
 269 then
 270         :
 271 else
 272         failures_cxx=$(($failures_cxx + 1))
 273 fi
 274
 275 # Report results.
 276
 277 if [ "$SUMMARY" = 1 ]; then
 278         printf "\
 279 Summary:
 280  %u failure(s) for C using '%s'.
 281  %u failure(s) for C++ using '%s'.
 282 " $failures_cc "$CC" $failures_cxx "$CXX" 1>&2
 283 fi
 284
 285 # Exit with nonzero status if there are failures.
 286
 287 [ $failures_cc -eq 0 ] &&
 288 [ $failures_cxx -eq 0 ]