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#!/bin/sh -e
# The only purpose of the above shebang is to orient shellcheck right.
# To make CI scripts maintenance simpler, copies of this file in the
# libpcap, tcpdump and tcpslice git repositories should be identical.
# Please mind that Solaris /bin/sh before 11 does not support the $()
# command substitution syntax, hence the SC2006 directives.
# A poor man's mktemp(1) for OSes that don't have one (e.g. AIX 7, Solaris 9).
mktempdir_diy() {
while true; do
# /bin/sh implements $RANDOM in AIX 7, but not in Solaris before 11,
# thus use dd and od instead.
# shellcheck disable=SC2006
mktempdir_diy_suffix=`dd if=/dev/urandom bs=1 count=4 2>/dev/null | od -t x -A n | head -1 | tr -d '\t '`
[ -z "$mktempdir_diy_suffix" ] && return 1
mktempdir_diy_path="${TMPDIR:-/tmp}/${1:?}.${mktempdir_diy_suffix}"
# "test -e" would be more appropriate, but it is not available in
# Solaris /bin/sh before 11.
if [ ! -d "$mktempdir_diy_path" ]; then
mkdir "$mktempdir_diy_path"
chmod go= "$mktempdir_diy_path"
echo "$mktempdir_diy_path"
break
fi
# Try again (AIX /dev/urandom returns zeroes quite often).
done
}
mktempdir() {
mktempdir_prefix=${1:-tmp}
# shellcheck disable=SC2006
case `uname -s` in
Darwin|FreeBSD|NetBSD)
# In these operating systems mktemp(1) always appends an implicit
# ".XXXXXXXX" suffix to the requested template when creating a
# temporary directory.
mktemp -d -t "$mktempdir_prefix"
;;
AIX)
mktempdir_diy "$mktempdir_prefix"
;;
SunOS)
# shellcheck disable=SC2006
case `uname -r` in
5.10|5.11)
mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
;;
*)
mktempdir_diy "$mktempdir_prefix"
;;
esac
;;
*)
# At least Linux and OpenBSD implementations require explicit trailing
# X'es in the template, so make it the same suffix as above.
mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
;;
esac
}
print_sysinfo() {
uname -a
date
}
# Try to make the current C compiler print its version information (usually
# multi-line) to stdout.
# shellcheck disable=SC2006
print_cc_version() {
case `basename "$CC"` in
gcc*|egcc*|clang*)
# GCC and Clang recognize --version, print to stdout and exit with 0.
"$CC" --version
;;
xl*)
# XL C for AIX recognizes -qversion, prints to stdout and exits with 0,
# but on an unknown command-line flag displays its man page and waits.
"$CC" -qversion
;;
sun*)
# Sun compilers recognize -V, print to stderr and exit with an error.
"$CC" -V 2>&1 || :
;;
cc)
case `uname -s` in
SunOS)
# Most likely Sun C.
"$CC" -V 2>&1 || :
;;
Darwin)
# Most likely Clang.
"$CC" --version
;;
Linux|FreeBSD|NetBSD|OpenBSD)
# Most likely Clang or GCC.
"$CC" --version
;;
esac
;;
*)
"$CC" --version || "$CC" -V || :
;;
esac
}
# For the current C compiler try to print a short and uniform identification
# string (such as "gcc-9.3.0") that is convenient to use in a case statement.
# shellcheck disable=SC2006
cc_id() {
cc_id_firstline=`print_cc_version | head -1`
cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.*clang version \([0-9\.]*\).*$/clang-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
echo "$cc_id_guessed"
return
fi
cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^IBM XL C.* for AIX, V\([0-9\.]*\).*$/xlc-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
echo "$cc_id_guessed"
return
fi
cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.* Sun C \([0-9\.]*\) .*$/suncc-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
echo "$cc_id_guessed"
return
fi
cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.* (.*) \([0-9\.]*\)$/gcc-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
echo "$cc_id_guessed"
return
fi
}
# For the current C compiler try to print CFLAGS value that tells to treat
# warnings as errors.
# shellcheck disable=SC2006
cc_werr_cflags() {
case `cc_id` in
gcc-*|clang-*)
echo '-Werror'
;;
xlc-*)
echo '-qhalt=w'
;;
suncc-*)
echo '-errwarn=%all'
;;
esac
}
increment() {
# No arithmetic expansion in Solaris /bin/sh before 11.
echo "${1:?} + 1" | bc
}
# Display text in magenta.
echo_magenta() {
# ANSI magenta, the imploded text, ANSI reset, newline.
printf '\033[35;1m%s\033[0m\n' "$*"
}
# Run a command after displaying it.
run_after_echo() {
: "${1:?}" # Require at least one argument.
printf '$ %s\n' "$*"
"$@"
}
print_so_deps() {
# shellcheck disable=SC2006
case `uname -s` in
Darwin)
run_after_echo otool -L "${1:?}"
;;
*)
run_after_echo ldd "${1:?}"
;;
esac
}
# Beware that setting MATRIX_DEBUG for tcpdump or tcpslice will produce A LOT
# of additional output there and in any nested libpcap builds. Multiplied by
# the matrix size, the full output log size might exceed limits of some CI
# systems (as it had previously happened with Travis CI). Use with caution on
# a reduced matrix.
handle_matrix_debug() {
[ "$MATRIX_DEBUG" != yes ] && return
echo '$ cat Makefile [...]'
sed '/^# DO NOT DELETE THIS LINE -- mkdep uses it.$/q' <Makefile
run_after_echo cat config.h
[ "$CMAKE" = yes ] || run_after_echo cat config.log
}
purge_directory() {
# shellcheck disable=SC2006
if [ "`uname -s`" = SunOS ] && [ "`uname -r`" = 5.11 ]; then
# In Solaris 11 /bin/sh the pathname expansion of "*" always includes
# "." and "..", so the straightforward rm would always fail.
(
cd "${1:?}"
for pd_each in *; do
if [ "$pd_each" != . ] && [ "$pd_each" != .. ]; then
rm -rf "$pd_each"
fi
done
)
else
rm -rf "${1:?}"/*
fi
}
# vi: set tabstop=4 softtabstop=0 expandtab shiftwidth=4 smarttab autoindent :
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