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

   1 #!/bin/sh -e
   2 # SPDX-License-Identifier: BSD-3-Clause
   3 # Copyright 2016 6WIND S.A.
   4
   5 # This script checks that header files in a given directory do not miss
   6 # dependencies when included on their own, do not conflict and accept being
   7 # compiled with the strictest possible flags.
   8 #
   9 # Files are looked up in the directory provided as the first argument,
  10 # otherwise build/include by default.
  11 #
  12 # Recognized environment variables:
  13 #
  14 # VERBOSE=1 is the same as -v.
  15 #
  16 # QUIET=1 is the same as -q.
  17 #
  18 # SUMMARY=1 is the same as -s.
  19 #
  20 # CC, CPPFLAGS, CFLAGS, EXTRA_CPPFLAGS, EXTRA_CFLAGS, CXX, CXXFLAGS and
  21 # EXTRA_CXXFLAGS are taken into account.
  22 #
  23 # PEDANTIC_CFLAGS, PEDANTIC_CXXFLAGS and PEDANTIC_CPPFLAGS provide strict
  24 # C/C++ compilation flags.
  25 #
  26 # IGNORE contains a list of shell patterns matching files (relative to the
  27 # include directory) to avoid. It is set by default to known DPDK headers
  28 # which must not be included on their own.
  29 #
  30 # IGNORE_CXX provides additional files for C++.
  31
  32 while getopts hqvs arg; do
  33         case $arg in
  34         h)
  35                 cat <<EOF
  36 usage: $0 [-h] [-q] [-v] [-s] [DIR]
  37
  38 This script checks that header files in a given directory do not miss
  39 dependencies when included on their own, do not conflict and accept being
  40 compiled with the strictest possible flags.
  41
  42   -h    display this help and exit
  43   -q    quiet mode, disable normal output
  44   -v    show command lines being executed
  45   -s    show summary
  46
  47 With no DIR, default to build/include.
  48
  49 Any failed header check yields a nonzero exit status.
  50 EOF
  51                 exit
  52                 ;;
  53         q)
  54                 QUIET=1
  55                 ;;
  56         v)
  57                 VERBOSE=1
  58                 ;;
  59         s)
  60                 SUMMARY=1
  61                 ;;
  62         *)
  63                 exit 1
  64                 ;;
  65         esac
  66 done
  67
  68 shift $(($OPTIND - 1))
  69
  70 include_dir=${1:-build/include}
  71
  72 : ${PEDANTIC_CFLAGS=-std=c99 -pedantic -Wall -Wextra -Werror}
  73 : ${PEDANTIC_CXXFLAGS=}
  74 : ${PEDANTIC_CPPFLAGS=-D_XOPEN_SOURCE=600}
  75 : ${CC:=cc}
  76 : ${CXX:=c++}
  77 : ${IGNORE= \
  78         'rte_atomic_32.h' \
  79         'rte_atomic_64.h' \
  80         'rte_byteorder_32.h' \
  81         'rte_byteorder_64.h' \
  82         'generic/*' \
  83         'exec-env/*' \
  84         'rte_vhost.h' \
  85         'rte_eth_vhost.h' \
  86         'rte_eal_interrupts.h' \
  87 }
  88 : ${IGNORE_CXX= \
  89         'rte_vhost.h' \
  90         'rte_eth_vhost.h' \
  91 }
  92
  93 temp_cc=/tmp/${0##*/}.$$.c
  94 pass_cc=
  95 failures_cc=0
  96
  97 temp_cxx=/tmp/${0##*/}.$$.cc
  98 pass_cxx=
  99 failures_cxx=0
 100
 101 # Process output parameters.
 102
 103 [ "$QUIET" = 1 ] &&
 104 exec 1> /dev/null
 105
 106 [ "$VERBOSE" = 1 ] &&
 107 output ()
 108 {
 109         local CCV
 110         local CXXV
 111
 112         shift
 113         CCV=$CC
 114         CXXV=$CXX
 115         CC="echo $CC" CXX="echo $CXX" "$@"
 116         CC=$CCV
 117         CXX=$CXXV
 118
 119         "$@"
 120 } ||
 121 output ()
 122 {
 123
 124         printf '  %s\n' "$1"
 125         shift
 126         "$@"
 127 }
 128
 129 trap 'rm -f "$temp_cc" "$temp_cxx"' EXIT
 130
 131 compile_cc ()
 132 {
 133         ${CC} -I"$include_dir" \
 134                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 135                 ${PEDANTIC_CFLAGS} ${CFLAGS} ${EXTRA_CFLAGS} \
 136                 -c -o /dev/null "${temp_cc}"
 137 }
 138
 139 compile_cxx ()
 140 {
 141         ${CXX} -I"$include_dir" \
 142                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 143                 ${PEDANTIC_CXXFLAGS} ${CXXFLAGS} ${EXTRA_CXXFLAGS} \
 144                 -c -o /dev/null "${temp_cxx}"
 145 }
 146
 147 ignore ()
 148 {
 149         file="$1"
 150         shift
 151         while [ $# -ne 0 ]; do
 152                 case "$file" in
 153                 $1)
 154                         return 0
 155                         ;;
 156                 esac
 157                 shift
 158         done
 159         return 1
 160 }
 161
 162 # Check C/C++ compilation for each header file.
 163
 164 while read -r path
 165 do
 166         file=${path#$include_dir}
 167         file=${file##/}
 168         if ignore "$file" $IGNORE; then
 169                 output "SKIP $file" :
 170                 continue
 171         fi
 172         if printf "\
 173 #include <%s>
 174
 175 int main(void)
 176 {
 177         return 0;
 178 }
 179 " "$file" > "$temp_cc" &&
 180                 output "CC $file" compile_cc
 181         then
 182                 pass_cc="$pass_cc $file"
 183         else
 184                 failures_cc=$(($failures_cc + 1))
 185         fi
 186         if ignore "$file" $IGNORE_CXX; then
 187                 output "SKIP CXX $file" :
 188                 continue
 189         fi
 190         if printf "\
 191 #include <%s>
 192
 193 int main()
 194 {
 195 }
 196 " "$file" > "$temp_cxx" &&
 197                 output "CXX $file" compile_cxx
 198         then
 199                 pass_cxx="$pass_cxx $file"
 200         else
 201                 failures_cxx=$(($failures_cxx + 1))
 202         fi
 203 done <<EOF
 204 $(find "$include_dir" -name '*.h')
 205 EOF
 206
 207 # Check C compilation with all includes.
 208
 209 : > "$temp_cc" &&
 210 for file in $pass_cc; do
 211         printf "\
 212 #include <%s>
 213 " "$file" >> $temp_cc
 214 done
 215 if printf "\
 216 int main(void)
 217 {
 218         return 0;
 219 }
 220 " >> "$temp_cc" &&
 221         output "CC (all includes that did not fail)" compile_cc
 222 then
 223         :
 224 else
 225         failures_cc=$(($failures_cc + 1))
 226 fi
 227
 228 # Check C++ compilation with all includes.
 229
 230 : > "$temp_cxx" &&
 231 for file in $pass_cxx; do
 232         printf "\
 233 #include <%s>
 234 " "$file" >> $temp_cxx
 235 done
 236 if printf "\
 237 int main()
 238 {
 239 }
 240 " >> "$temp_cxx" &&
 241         output "CXX (all includes that did not fail)" compile_cxx
 242 then
 243         :
 244 else
 245         failures_cxx=$(($failures_cxx + 1))
 246 fi
 247
 248 # Report results.
 249
 250 if [ "$SUMMARY" = 1 ]; then
 251         printf "\
 252 Summary:
 253  %u failure(s) for C using '%s'.
 254  %u failure(s) for C++ using '%s'.
 255 " $failures_cc "$CC" $failures_cxx "$CXX" 1>&2
 256 fi
 257
 258 # Exit with nonzero status if there are failures.
 259
 260 [ $failures_cc -eq 0 ] &&
 261 [ $failures_cxx -eq 0 ]