The Tcpdump Group git mirrors - tcpdump/blob - build_common.sh

   1 #!/bin/sh -e
   2
   3 # The only purpose of the above shebang is to orient shellcheck right.
   4 # To make CI scripts maintenance simpler, copies of this file in the
   5 # libpcap, tcpdump and tcpslice git repositories should be identical.
   6 # Please mind that Solaris /bin/sh before 11 does not support the $()
   7 # command substitution syntax, hence the SC2006 directives.
   8
   9 # A poor man's mktemp(1) for OSes that don't have one (e.g. AIX 7, Solaris 9).
  10 mktempdir_diy() {
  11     while true; do
  12         # /bin/sh implements $RANDOM in AIX 7, but not in Solaris before 11,
  13         # thus use dd and od instead.
  14         # shellcheck disable=SC2006
  15         mktempdir_diy_suffix=`dd if=/dev/urandom bs=1 count=4 2>/dev/null | od -t x -A n | head -1 | tr -d '\t '`
  16         [ -z "$mktempdir_diy_suffix" ] && return 1
  17         mktempdir_diy_path="${TMPDIR:-/tmp}/${1:?}.${mktempdir_diy_suffix}"
  18         # "test -e" would be more appropriate, but it is not available in
  19         # Solaris /bin/sh before 11.
  20         if [ ! -d "$mktempdir_diy_path" ]; then
  21             mkdir "$mktempdir_diy_path"
  22             chmod go= "$mktempdir_diy_path"
  23             echo "$mktempdir_diy_path"
  24             break
  25         fi
  26         # Try again (AIX /dev/urandom returns zeroes quite often).
  27     done
  28 }
  29
  30 mktempdir() {
  31     mktempdir_prefix=${1:-tmp}
  32     # shellcheck disable=SC2006
  33     case `uname -s` in
  34     Darwin|FreeBSD|NetBSD)
  35         # In these operating systems mktemp(1) always appends an implicit
  36         # ".XXXXXXXX" suffix to the requested template when creating a
  37         # temporary directory.
  38         mktemp -d -t "$mktempdir_prefix"
  39         ;;
  40     AIX)
  41         mktempdir_diy "$mktempdir_prefix"
  42         ;;
  43     SunOS)
  44         # shellcheck disable=SC2006
  45         case `uname -r` in
  46         5.10|5.11)
  47             mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
  48             ;;
  49         *)
  50             mktempdir_diy "$mktempdir_prefix"
  51             ;;
  52         esac
  53         ;;
  54     *)
  55         # At least Linux and OpenBSD implementations require explicit trailing
  56         # X'es in the template, so make it the same suffix as above.
  57         mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
  58         ;;
  59     esac
  60 }
  61
  62 print_sysinfo() {
  63     uname -a
  64     date
  65 }
  66
  67 print_cc_version() {
  68     # shellcheck disable=SC2006
  69     case `basename "$CC"` in
  70     gcc*|clang*)
  71         # GCC and Clang recognize --version, print to stdout and exit with 0.
  72         "$CC" --version
  73         ;;
  74     xl*)
  75         # XL C for AIX recognizes -qversion, prints to stdout and exits with 0,
  76         # but on an unknown command-line flag displays its man page and waits.
  77         "$CC" -qversion
  78         ;;
  79     sun*)
  80         # Sun compilers recognize -V, print to stderr and exit with an error.
  81         "$CC" -V 2>&1 || :
  82         ;;
  83     *)
  84         "$CC" --version || "$CC" -V || :
  85         ;;
  86     esac
  87 }
  88
  89 increment() {
  90     # No arithmetic expansion in Solaris /bin/sh before 11.
  91     echo "${1:?} + 1" | bc
  92 }
  93
  94 # Display text in magenta.
  95 echo_magenta() {
  96     # ANSI magenta, the imploded text, ANSI reset, newline.
  97     printf '\033[35;1m%s\033[0m\n' "$*"
  98 }
  99
 100 # Run a command after displaying it.
 101 run_after_echo() {
 102     : "${1:?}" # Require at least one argument.
 103     printf '$ %s\n' "$*"
 104     "$@"
 105 }
 106
 107 print_so_deps() {
 108     # shellcheck disable=SC2006
 109     case `uname -s` in
 110     Darwin)
 111         run_after_echo otool -L "${1:?}"
 112         ;;
 113     *)
 114         run_after_echo ldd "${1:?}"
 115         ;;
 116     esac
 117 }
 118
 119 # Beware that setting MATRIX_DEBUG for tcpdump or tcpslice will produce A LOT
 120 # of additional output there and in any nested libpcap builds. Multiplied by
 121 # the matrix size, the full output log size might exceed limits of some CI
 122 # systems (as it had previously happened with Travis CI). Use with caution on
 123 # a reduced matrix.
 124 handle_matrix_debug() {
 125     [ "$MATRIX_DEBUG" != yes ] && return
 126     echo '$ cat Makefile [...]'
 127     sed '/^# DO NOT DELETE THIS LINE -- mkdep uses it.$/q' <Makefile
 128     run_after_echo cat config.h
 129     [ "$CMAKE" = yes ] || run_after_echo cat config.log
 130 }
 131
 132 purge_directory() {
 133     # shellcheck disable=SC2006
 134     if [ "`uname -s`" = SunOS ] && [ "`uname -r`" = 5.11 ]; then
 135         # In Solaris 11 /bin/sh the pathname expansion of "*" always includes
 136         # "." and "..", so the straightforward rm would always fail.
 137         (
 138             cd "${1:?}"
 139             for pd_each in *; do
 140                 if [ "$pd_each" != . ] && [ "$pd_each" != .. ]; then
 141                     rm -rf "$pd_each"
 142                 fi
 143             done
 144         )
 145     else
 146         rm -rf "${1:?}"/*
 147     fi
 148 }
 149
 150 # vi: set tabstop=4 softtabstop=0 expandtab shiftwidth=4 smarttab autoindent :