cosmopolitan/build/archive
Justine Tunney f213556366 Add binfmt_misc workaround detector to builds
This is a recently introduced Linux Kernel feature that gives people
like Debian package mantainers the power to arbitrarily redefine how
executables are interpreted by the kernel. If your system gets tuned
this way and you're not able to disable it, then you need to restore
default behavior for the APE MZqFpD prefix as follows:

    sudo sh -c "echo ':APE:M::MZqFpD::/bin/sh:' >/proc/sys/fs/binfmt_misc/register"

This prefix will cover all .com executables built with this tooling.
Please don't run the above command unless you're certain you need it.
See #2 for additional context.
2020-08-31 20:09:23 -07:00

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#!/bin/sh
#-*-mode:sh;indent-tabs-mode:nil;tab-width:2;coding:utf-8-*-┐
#───vi: set net ft=sh ts=2 sts=2 fenc=utf-8 :vi─────────────┘
#
# OVERVIEW
#
# GNU Archiver Veneer
#
# DESCRIPTION
#
# This script wraps normal archive commands that're transparently
# passed-through. It adds value too, by addressing difficulties
# that would normally cause a developer to need `make clean`.
#
# EXAMPLE
#
# build/archive ar rcsD library.a foo.o ...
if [ ! -d o/third_party/gcc ]; then
third_party/gcc/unbundle.sh
fi
export LC_ALL=C
RM=${RM:-$(command -v rm) -f} || exit
MKDIR=${MKDIR:-$(command -v mkdir) -p} || exit
AR=$1
ARFLAGS=$2
OUT=$3
shift 3
# remove directory arguments (having .a targets depend on dirs is what
# lets them be invalidated by deleted files)
FIRST=1
for x; do
if [ $FIRST -eq 1 ]; then
set --
FIRST=0
fi
if [ -d "$x" ]; then
if [ -f "$OUT" ] && [ "$x" -nt "$OUT" ]; then
$RM "$OUT"
fi
continue
fi
if [ "$x" != "${x%.o}" ]; then
set -- "$@" "$x"
fi
done
set -- "$AR" "$ARFLAGS" "$OUT" "$@"
printf %s\\n "$*" >"$OUT.cmd"
OUTDIR="${OUT%/*}"
if [ "$OUTDIR" != "$OUT" ] && [ ! -d "$OUTDIR" ]; then
$MKDIR "$OUTDIR" || exit 2
fi
printf "$LOGFMT" "${ACTION:-ARCHIVE.a}" "$OUT" >&2
# if [ "$SILENT" = "0" ]; then
# # some of these windows nt archives are quite huge
# COLUMNS=${COLUMNS:-80}
# COLUMNS=$((COLUMNS - 4))
# printf "%s\n" "$*" |
# /usr/bin/fold -s -w $COLUMNS |
# sed -e '1bb' -e 's/^/ /' -e ':b' -e '$b' -e 's/$/ \\/' >&2
# else
# printf "$LOGFMT" "${ACTION:-ARCHIVE.a}" "$OUT" >&2
# fi
REASON=failed
trap REASON=interrupted INT
"$@" >/dev/null && exit
if [ "$TERM" = "dumb" ]; then
f='%s %s\r\n\r\n'
else
f='\033[91m%s\033[39m \033[94m%s\033[39m\r\n\r\n'
fi
printf "$f" "archive $REASON:" "$*" >&2
exit 1