# 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.
+# command substitution syntax, hence the "-e SC2006" flag in Makefile.
# 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 $RANDOM in AIX 7, but not in Solaris before 11,
# thus use dd and od instead.
- # shellcheck disable=SC2006
- mktempdir_diy_suffix=`dd if=/dev/urandom bs=1 count=4 2>/dev/null | od -t x -A n | head -1 | tr -d '\t '`
+ mktempdir_diy_suffix=`dd if=/dev/urandom bs=4 count=1 2>/dev/null | od -t x -A n | head -1 | tr -d '\t '`
[ -z "$mktempdir_diy_suffix" ] && return 1
mktempdir_diy_path="${TMPDIR:-/tmp}/${1:?}.${mktempdir_diy_suffix}"
# "test -e" would be more appropriate, but it is not available in
echo "$mktempdir_diy_path"
break
fi
- # Try again (AIX /dev/urandom returns zeroes quite often).
+ # Try again (very unlikely, just in case).
done
}
mktempdir() {
mktempdir_prefix=${1:-tmp}
- # shellcheck disable=SC2006
- case `uname -s` in
- Darwin|FreeBSD|NetBSD)
+ case `os_id` in
+ Darwin-*|FreeBSD-*|NetBSD-*)
# In these operating systems mktemp(1) always appends an implicit
# ".XXXXXXXX" suffix to the requested template when creating a
# temporary directory.
mktemp -d -t "$mktempdir_prefix"
;;
- AIX)
- mktempdir_diy "$mktempdir_prefix"
+ SunOS-5.10|SunOS-5.11)
+ # Although the suffix is optional, specify it for consistent results.
+ mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
;;
- SunOS)
- # shellcheck disable=SC2006
- case `uname -r` in
- 5.10|5.11)
- mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
- ;;
- *)
- mktempdir_diy "$mktempdir_prefix"
- ;;
- esac
+ SunOS-*|AIX-*)
+ mktempdir_diy "$mktempdir_prefix"
;;
*)
- # At least Linux and OpenBSD implementations require explicit trailing
- # X'es in the template, so make it the same suffix as above.
+ # At least Haiku, Linux and OpenBSD implementations require explicit
+ # trailing X'es in the template, so make it the same suffix as above.
mktemp -d -t "${mktempdir_prefix}.XXXXXXXX"
;;
esac
print_sysinfo() {
uname -a
+ printf 'OS identification: '
+ os_id
date
}
# Try to make the current C compiler print its version information (usually
# multi-line) to stdout.
-# shellcheck disable=SC2006
-print_cc_version() {
+cc_version_nocache() {
+ : "${CC:?}"
case `basename "$CC"` in
gcc*|egcc*|clang*)
# GCC and Clang recognize --version, print to stdout and exit with 0.
"$CC" -V 2>&1 || :
;;
cc)
- case `uname -s` in
- SunOS)
+ case `os_id` in
+ SunOS-*)
# Most likely Sun C.
"$CC" -V 2>&1 || :
;;
- Darwin)
+ Darwin-*)
# Most likely Clang.
"$CC" --version
;;
- Linux|FreeBSD|NetBSD|OpenBSD)
+ Linux-*|FreeBSD-*|NetBSD-*|OpenBSD-*)
# Most likely Clang or GCC.
"$CC" --version
;;
esac
}
+cc_version() {
+ echo "${cc_version_cached:=`cc_version_nocache`}"
+}
+
+print_cc_version() {
+ cc_version
+ printf 'Compiler identification: '
+ cc_id
+}
+
# For the current C compiler try to print a short and uniform identification
# string (such as "gcc-9.3.0") that is convenient to use in a case statement.
-# shellcheck disable=SC2006
-cc_id() {
- cc_id_firstline=`print_cc_version | head -1`
+cc_id_nocache() {
+ cc_id_firstline=`cc_version | head -1`
+ : "${cc_id_firstline:?}"
cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.*clang version \([0-9\.]*\).*$/clang-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
return
fi
- cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.* (.*) \([0-9\.]*\)$/gcc-\1/'`
+ # OpenBSD default GCC:
+ # "gcc (GCC) 4.2.1 20070719"
+ # RedHat GCC:
+ # "gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2)"
+ # "gcc (GCC) 10.3.1 20210422 (Red Hat 10.3.1-1)"
+ # other GCC packages:
+ # "sparc-sun-solaris2.9-gcc (GCC) 4.2.0 (gccfss)"
+ # "gcc (GCC) 5.5.0"
+ # "gcc (nb4 20200810) 7.5.0"
+ # "gcc (OpenIndiana 7.5.0-il-0) 7.5.0"
+ # "gcc (Debian 8.3.0-6) 8.3.0"
+ # "gcc (Raspbian 8.3.0-6+rpi1) 8.3.0"
+ # "egcc (GCC) 8.4.0"
+ # "gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0"
+ # "gcc (FreeBSD Ports Collection) 10.3.0"
+ cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.* (.*) \([0-9\.]*\).*$/gcc-\1/'`
if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then
echo "$cc_id_guessed"
return
fi
}
+cc_id() {
+ echo "${cc_id_cached:=`cc_id_nocache`}"
+}
+
+# Call this function each time CC has changed.
+discard_cc_cache() {
+ cc_version_cached=
+ cc_id_cached=
+}
+
# For the current C compiler try to print CFLAGS value that tells to treat
# warnings as errors.
-# shellcheck disable=SC2006
cc_werr_cflags() {
case `cc_id` in
gcc-*|clang-*)
esac
}
+# Tell whether "gcc" is a symlink to Clang (this is the case on macOS).
+gcc_is_clang_in_disguise() {
+ case `cc_id`/`basename "${CC:?}"` in
+ clang-*/gcc)
+ return 0
+ ;;
+ esac
+ return 1
+}
+
+os_id() {
+ # OS does not change between builds or in the middle of a build, so it is
+ # fine to cache uname output.
+ : "${os_id_sysname:=`uname -s`}"
+ printf '%s-' "$os_id_sysname"
+ : "${os_id_release:=`uname -r`}"
+ case "$os_id_sysname" in
+ AIX)
+ : "${os_id_version:=`uname -v`}"
+ echo "${os_id_version}.${os_id_release}"
+ ;;
+ Darwin|NetBSD|OpenBSD|SunOS)
+ echo "$os_id_release"
+ ;;
+ FreeBSD|Linux)
+ # Meaningful version is usually the substring before the first dash.
+ echo "$os_id_release" | sed 's/^\([0-9\.]*\).*$/\1/'
+ ;;
+ Haiku)
+ # Meaningful version is the substring before the plus sign.
+ # "hrev56578" stands for "R1/beta4".
+ # "hrev55181" stands for "R1/beta3".
+ # "hrev54154" stands for "R1/beta2".
+ : "${os_id_version:=`uname -v`}"
+ echo "$os_id_version" | sed 's/^\(hrev.*\)+.*$/\1/'
+ ;;
+ *)
+ echo 'UNKNOWN'
+ ;;
+ esac
+}
+
increment() {
# No arithmetic expansion in Solaris /bin/sh before 11.
echo "${1:?} + 1" | bc
}
print_so_deps() {
- # shellcheck disable=SC2006
- case `uname -s` in
- Darwin)
+ case `os_id` in
+ Darwin-*)
run_after_echo otool -L "${1:?}"
;;
+ Haiku-*)
+ run_after_echo objdump -p "${1:?}"
+ ;;
*)
run_after_echo ldd "${1:?}"
;;
}
purge_directory() {
- # shellcheck disable=SC2006
- if [ "`uname -s`" = SunOS ] && [ "`uname -r`" = 5.11 ]; then
+ if [ "`os_id`" = SunOS-5.11 ]; then
# In Solaris 11 /bin/sh the pathname expansion of "*" always includes
# "." and "..", so the straightforward rm would always fail.
(
projects / tcpdump / blobdiff