ceph/src/seastar/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         'rte_vhost.h' \
  84         'rte_eth_vhost.h' \
  85         'rte_eal_interrupts.h' \
  86 }
  87 : ${IGNORE_CXX= \
  88         'rte_vhost.h' \
  89         'rte_eth_vhost.h' \
  90 }
  91
  92 temp_cc=$(mktemp -t dpdk.${0##*/}.XXX.c)
  93 pass_cc=
  94 failures_cc=0
  95
  96 temp_cxx=$(mktemp -t dpdk.${0##*/}.XXX.cc)
  97 pass_cxx=
  98 failures_cxx=0
  99
 100 # Process output parameters.
 101
 102 [ "$QUIET" = 1 ] &&
 103 exec 1> /dev/null
 104
 105 [ "$VERBOSE" = 1 ] &&
 106 output ()
 107 {
 108         local CCV
 109         local CXXV
 110
 111         shift
 112         CCV=$CC
 113         CXXV=$CXX
 114         CC="echo $CC" CXX="echo $CXX" "$@"
 115         CC=$CCV
 116         CXX=$CXXV
 117
 118         "$@"
 119 } ||
 120 output ()
 121 {
 122
 123         printf '  %s\n' "$1"
 124         shift
 125         "$@"
 126 }
 127
 128 trap 'rm -f "$temp_cc" "$temp_cxx"' EXIT
 129
 130 compile_cc ()
 131 {
 132         ${CC} -I"$include_dir" \
 133                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 134                 ${PEDANTIC_CFLAGS} ${CFLAGS} ${EXTRA_CFLAGS} \
 135                 -c -o /dev/null "${temp_cc}"
 136 }
 137
 138 compile_cxx ()
 139 {
 140         ${CXX} -I"$include_dir" \
 141                 ${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
 142                 ${PEDANTIC_CXXFLAGS} ${CXXFLAGS} ${EXTRA_CXXFLAGS} \
 143                 -c -o /dev/null "${temp_cxx}"
 144 }
 145
 146 ignore ()
 147 {
 148         file="$1"
 149         shift
 150         while [ $# -ne 0 ]; do
 151                 case "$file" in
 152                 $1)
 153                         return 0
 154                         ;;
 155                 esac
 156                 shift
 157         done
 158         return 1
 159 }
 160
 161 # Check C/C++ compilation for each header file.
 162
 163 while read -r path
 164 do
 165         file=${path#$include_dir}
 166         file=${file##/}
 167         if ignore "$file" $IGNORE; then
 168                 output "SKIP $file" :
 169                 continue
 170         fi
 171         if printf "\
 172 #include <%s>
 173
 174 int main(void)
 175 {
 176         return 0;
 177 }
 178 " "$file" > "$temp_cc" &&
 179                 output "CC $file" compile_cc
 180         then
 181                 pass_cc="$pass_cc $file"
 182         else
 183                 failures_cc=$(($failures_cc + 1))
 184         fi
 185         if ignore "$file" $IGNORE_CXX; then
 186                 output "SKIP CXX $file" :
 187                 continue
 188         fi
 189         if printf "\
 190 #include <%s>
 191
 192 int main()
 193 {
 194 }
 195 " "$file" > "$temp_cxx" &&
 196                 output "CXX $file" compile_cxx
 197         then
 198                 pass_cxx="$pass_cxx $file"
 199         else
 200                 failures_cxx=$(($failures_cxx + 1))
 201         fi
 202 done <<EOF
 203 $(find "$include_dir" -name '*.h')
 204 EOF
 205
 206 # Check C compilation with all includes.
 207
 208 : > "$temp_cc" &&
 209 for file in $pass_cc; do
 210         printf "\
 211 #include <%s>
 212 " "$file" >> $temp_cc
 213 done
 214 if printf "\
 215 int main(void)
 216 {
 217         return 0;
 218 }
 219 " >> "$temp_cc" &&
 220         output "CC (all includes that did not fail)" compile_cc
 221 then
 222         :
 223 else
 224         failures_cc=$(($failures_cc + 1))
 225 fi
 226
 227 # Check C++ compilation with all includes.
 228
 229 : > "$temp_cxx" &&
 230 for file in $pass_cxx; do
 231         printf "\
 232 #include <%s>
 233 " "$file" >> $temp_cxx
 234 done
 235 if printf "\
 236 int main()
 237 {
 238 }
 239 " >> "$temp_cxx" &&
 240         output "CXX (all includes that did not fail)" compile_cxx
 241 then
 242         :
 243 else
 244         failures_cxx=$(($failures_cxx + 1))
 245 fi
 246
 247 # Report results.
 248
 249 if [ "$SUMMARY" = 1 ]; then
 250         printf "\
 251 Summary:
 252  %u failure(s) for C using '%s'.
 253  %u failure(s) for C++ using '%s'.
 254 " $failures_cc "$CC" $failures_cxx "$CXX" 1>&2
 255 fi
 256
 257 # Exit with nonzero status if there are failures.
 258
 259 [ $failures_cc -eq 0 ] &&
 260 [ $failures_cxx -eq 0 ]