diff --git a/.github/build b/.github/build
new file mode 100755
index 0000000..d35cc1d
--- /dev/null
+++ b/.github/build
@@ -0,0 +1,110 @@
+#!/usr/bin/env bash
+set -e
+
+if [[ ! -d tools ]] ; then
+    printf "This script needs to be run from the root of the repo, like ./tools/travis-setup\n"
+    exit 1
+fi
+
+mkdir -p tools/downloads
+mkdir -p tools/cross/bin
+mkdir -p dist
+
+export PATH="$(pwd)/tools/cross/bin:$PATH"
+
+targets=(
+'x86_64-linux-musl'
+'i486-linux-musl'
+'aarch64-linux-musl'
+'arm-linux-musleabi'
+'arm-linux-musleabihf'
+'powerpc64le-linux-musl'
+)
+
+declare -A target_short
+target_short[x86_64-linux-musl]="amd64"
+target_short[i486-linux-musl]="x86"
+target_short[aarch64-linux-musl]="aarch64"
+target_short[arm-linux-musleabi]="arm"
+target_short[arm-linux-musleabihf]="armhf"
+target_short[powerpc64le-linux-musl]="ppc64le"
+
+declare -A versions
+versions[justc-forstdin]=$(grep version package/info | cut -d'=' -f2)
+
+skaware_release=v2.0.7
+musl_make_release=v15
+gccver=7.3.0
+
+musl_cross_make="https://github.com/just-containers/musl-cross-make/releases/download/$musl_make_release"
+skaware="https://github.com/just-containers/skaware/releases/download/$skaware_release"
+
+manifesturl="$skaware/manifest.txt"
+rm -f "tools/downloads/manifest.txt"
+curl -s -R -L -o "tools/downloads/manifest.txt" "$manifesturl"
+
+while read -r line ; do
+  key=$(printf "${line}" | cut -d"=" -f1)
+  value=$(printf "${line}" | cut -d"=" -f2)
+  if [[ -n "${key}" && -n "${value}" ]] ; then
+    versions[$key]="$value"
+  fi
+done < tools/downloads/manifest.txt
+
+
+for target in "${targets[@]}" ; do
+  gccurl="$musl_cross_make/gcc-${gccver}-${target}.tar.xz"
+  gccfile=$(basename $gccurl)
+  if [[ ! -f "tools/downloads/$gccfile" ]] ; then
+    printf "Downloading tools/downloads/$gccfile\n"
+    curl -s -R -L -o "tools/downloads/$gccfile" "$gccurl"
+  fi
+  skawareurl="$skaware/skalibs-${versions[skalibs]}-linux-${target_short[$target]}-dev.tar.gz"
+  skafile=$(basename $skawareurl)
+  if [[ ! -f "tools/downloads/$skafile" ]] ; then
+    printf "Downloading tools/downloads/$skafile\n"
+    curl -s -R -L -o "tools/downloads/$skafile" "$skawareurl"
+  fi
+
+  execlineurl="$skaware/execline-${versions[execline]}-linux-${target_short[$target]}-dev.tar.gz"
+  execlinefile=$(basename $execlineurl)
+  if [[ ! -f "tools/downloads/$execlinefile" ]] ; then
+    printf "Downloading tools/downloads/$execlinefile\n"
+    curl -s -R -L -o "tools/downloads/$execlinefile" "$execlineurl"
+  fi
+
+  tar xf "tools/downloads/$gccfile" -C tools/cross
+  tar xf "tools/downloads/$skafile" -C tools/cross/${target} --strip-components=1
+  tar xf "tools/downloads/$execlinefile" -C tools/cross/${target} --strip-components=1
+
+  mkdir -p dist/${target}
+
+  CFLAGS="-g0 -Os" \
+  ./configure \
+    --target=$target \
+    --prefix=/usr \
+    --with-include=$(pwd)/tools/cross/${target}/include \
+    --with-lib=$(pwd)/tools/cross/${target}/lib \
+    --with-sysdeps=$(pwd)/tools/cross/${target}/lib/skalibs/sysdeps \
+    --enable-static-libc
+  make
+  ${target}-strip justc-forstdin
+  make DESTDIR=dist/${target} install
+  make clean
+  rm -rf dist/${target}/usr/include
+
+  printf "Making tarball for $target\n"
+  tar cvzf dist/justc-forstdin-${versions[justc-forstdin]}-linux-${target_short[$target]}.tar.gz \
+    -C dist/${target} \
+    --owner 0 \
+    --group 0 \
+    usr
+done
+
+printf 'Built using `skalibs-%s`\n' "${versions[skalibs]}" > dist/release.md
+
+printf 'Compiling source tarball\n'
+
+make tgz
+cp /tmp/justc-forstdin-${versions[justc-forstdin]}.tar.gz dist/
+
diff --git a/.github/release b/.github/release
new file mode 100755
index 0000000..94a9645
--- /dev/null
+++ b/.github/release
@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+set -e
+
+# don't loop if files don't exist
+shopt -s nullglob
+
+mkdir -p tools/downloads
+mkdir -p tools/cross/bin
+
+if [[ ! -f "tools/downloads/linux-amd64-github-release.bz2" ]] ; then
+  printf "Downloading tools/downloads/linux-amd64-github-release.bz2\n"
+  curl -s -R -L -o "tools/downloads/linux-amd64-github-release.bz2" \
+    "https://github.com/github-release/github-release/releases/download/v0.8.1/linux-amd64-github-release.bz2"
+fi
+
+bunzip2 "tools/downloads/linux-amd64-github-release.bz2"
+mv "tools/downloads/linux-amd64-github-release" "tools/cross/bin/github-release"
+chmod +x "tools/cross/bin/github-release"
+
+export PATH="$(pwd)/tools/cross/bin:$PATH"
+
+if [[ ! -d dist ]] ; then
+    printf "This needs to be run from the root of the repo\n"
+    exit 1
+fi
+
+# exit if TRAVIS_TAG is empty, no need to release anything
+if [ -z "${TRAVIS_TAG}" ]; then
+  exit 0
+fi
+
+export "PATH=$(pwd)/tools/cross/bin:$PATH"
+
+# get user and repo names
+USERNAME=$(echo ${TRAVIS_REPO_SLUG} | cut -d"/" -f1)
+REPONAME=$(echo ${TRAVIS_REPO_SLUG} | cut -d"/" -f2)
+
+# release
+github-release release \
+  --user "${USERNAME}" \
+  --repo "${REPONAME}" \
+  --tag "${TRAVIS_TAG##*/}" \
+  --name "${TRAVIS_TAG##*/}" \
+  --description "$(cat $(pwd)/dist/release.md)" || true
+
+# binaries
+for i in "$(pwd)/dist/"*.tar.gz; do
+  name=$(basename ${i})
+  gpg -u 0x3B2FD161 --output "${i}.sig" --detach-sig "${i}"
+  github-release upload \
+    --user "${USERNAME}" \
+    --repo "${REPONAME}" \
+    --tag "${TRAVIS_TAG##*/}" \
+    --name "${name}" \
+    --file "${i}"
+  github-release upload \
+    --user "${USERNAME}" \
+    --repo "${REPONAME}" \
+    --tag "${TRAVIS_TAG##*/}" \
+    --name "${name}.sig" \
+    --file "${i}.sig"
+done
diff --git a/.github/workflows/all.yml b/.github/workflows/all.yml
new file mode 100644
index 0000000..2aa30f3
--- /dev/null
+++ b/.github/workflows/all.yml
@@ -0,0 +1,57 @@
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v2
+
+      - name: build
+        run: .github/build
+
+      - name: upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: |
+            dist/*.tar.gz
+            dist/*.md
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    needs: build
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v2
+
+      - name: download artifacts
+        uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: dist
+
+      - name: decrypt signing keys
+        env:
+          OPENSSL_KEY: ${{ secrets.OPENSSL_KEY }}
+          OPENSSL_IV: ${{ secrets.OPENSSL_IV }}
+        run: openssl aes-256-cbc -K $OPENSSL_KEY -iv $OPENSSL_IV -in tools/keys.tar.xz.enc -out tools/keys.tar.xz -d
+
+      - name: extract signing keys
+        run: tar xf tools/keys.tar.xz -C tools
+
+      - name: import public key
+        run: gpg --import tools/keys/public.key
+
+      - name: import private key
+        run: gpg --allow-secret-key-import --import tools/keys/private.key
+
+      - name: create and upload release
+        run: .github/release
+        env:
+          TRAVIS_REPO_SLUG: just-containers/justc-forstdin
+          TRAVIS_TAG: ${{ github.ref }}
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..51d59fb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+/config.mak
+/justc-forstdin
+*.o
+/src/include/justc-forstdin/config.h
+/tools/downloads
+/tools/cross
+/dist
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..ba62ea8
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,16 @@
+Internet Systems Consortium license
+===================================
+
+Copyright (c) `2021`, `Laurent Bercot <ska at skarnet.org>`, `John Regan <john at jrjrtech.com>`
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8c86a1b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,151 @@
+#
+# This Makefile requires GNU make.
+#
+# Do not make changes here.
+# Use the included .mak files.
+#
+
+it: all
+
+make_need := 3.81
+ifeq "" "$(strip $(filter $(make_need), $(firstword $(sort $(make_need) $(MAKE_VERSION)))))"
+fail := $(error Your make ($(MAKE_VERSION)) is too old. You need $(make_need) or newer)
+endif
+
+CC = $(error Please use ./configure first)
+
+STATIC_LIBS :=
+SHARED_LIBS :=
+INTERNAL_LIBS :=
+EXTRA_TARGETS :=
+LIB_DEFS :=
+
+define library_definition
+LIB$(firstword $(subst =, ,$(1))) := lib$(lastword $(subst =, ,$(1))).$(if $(DO_ALLSTATIC),a,so).xyzzy
+ifdef DO_SHARED
+SHARED_LIBS += lib$(lastword $(subst =, ,$(1))).so.xyzzy
+endif
+ifdef DO_STATIC
+STATIC_LIBS += lib$(lastword $(subst =, ,$(1))).a.xyzzy
+endif
+endef
+
+-include config.mak
+include package/targets.mak
+
+$(foreach var,$(LIB_DEFS),$(eval $(call library_definition,$(var))))
+
+include package/deps.mak
+
+version_m := $(basename $(version))
+version_M := $(basename $(version_m))
+version_l := $(basename $(version_M))
+CPPFLAGS_ALL := $(CPPFLAGS_AUTO) $(CPPFLAGS)
+CFLAGS_ALL := $(CFLAGS_AUTO) $(CFLAGS)
+ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
+CFLAGS_SHARED := -fPIC
+else
+CFLAGS_SHARED :=
+endif
+LDFLAGS_ALL := $(LDFLAGS_AUTO) $(LDFLAGS)
+REALCC = $(CROSS_COMPILE)$(CC)
+AR := $(CROSS_COMPILE)ar
+RANLIB := $(CROSS_COMPILE)ranlib
+STRIP := $(CROSS_COMPILE)strip
+INSTALL := ./tools/install.sh
+
+ALL_BINS := $(LIBEXEC_TARGETS) $(BIN_TARGETS)
+ALL_LIBS := $(SHARED_LIBS) $(STATIC_LIBS) $(INTERNAL_LIBS)
+ALL_INCLUDES := $(wildcard src/include/$(package)/*.h)
+
+all: $(ALL_LIBS) $(ALL_BINS) $(ALL_INCLUDES)
+
+clean:
+	@exec rm -f $(ALL_LIBS) $(ALL_BINS) $(wildcard src/*/*.o src/*/*.lo) $(EXTRA_TARGETS)
+
+distclean: clean
+	@exec rm -f config.mak src/include/$(package)/config.h
+
+tgz: distclean
+	@. package/info && \
+	rm -rf /tmp/$$package-$$version && \
+	cp -a . /tmp/$$package-$$version && \
+	cd /tmp && \
+	tar -zpcv --owner=0 --group=0 --numeric-owner --exclude=.travis* --exclude=dist --exclude=tools/cross --exclude=tools/downloads --exclude=tools/travis* --exclude=tools/keys* --exclude=.git* -f /tmp/$$package-$$version.tar.gz $$package-$$version && \
+	exec rm -rf /tmp/$$package-$$version
+
+strip: $(ALL_LIBS) $(ALL_BINS)
+ifneq ($(strip $(STATIC_LIBS)),)
+	exec $(STRIP) -x -R .note -R .comment -R .note.GNU-stack $(STATIC_LIBS)
+endif
+ifneq ($(strip $(ALL_BINS)$(SHARED_LIBS)),)
+	exec $(STRIP) -R .note -R .comment -R .note.GNU-stack $(ALL_BINS) $(SHARED_LIBS)
+endif
+
+install: install-dynlib install-libexec install-bin install-lib install-include
+install-dynlib: $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(dynlibdir)/lib%.so)
+install-libexec: $(LIBEXEC_TARGETS:%=$(DESTDIR)$(libexecdir)/%)
+install-bin: $(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%)
+install-lib: $(STATIC_LIBS:lib%.a.xyzzy=$(DESTDIR)$(libdir)/lib%.a)
+install-include: $(ALL_INCLUDES:src/include/$(package)/%.h=$(DESTDIR)$(includedir)/$(package)/%.h)
+install-data: $(ALL_DATA:src/etc/%=$(DESTDIR)$(datadir)/%)
+
+ifneq ($(exthome),)
+
+$(DESTDIR)$(exthome): $(DESTDIR)$(home)
+	exec $(INSTALL) -l $(notdir $(home)) $(DESTDIR)$(exthome)
+
+update: $(DESTDIR)$(exthome)
+
+global-links: $(DESTDIR)$(exthome) $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(sproot)/library.so/lib%.so.$(version_M)) $(BIN_TARGETS:%=$(DESTDIR)$(sproot)/command/%)
+
+$(DESTDIR)$(sproot)/command/%: $(DESTDIR)$(home)/command/%
+	exec $(INSTALL) -D -l ..$(subst $(sproot),,$(exthome))/command/$(<F) $@
+
+$(DESTDIR)$(sproot)/library.so/lib%.so.$(version_M): $(DESTDIR)$(dynlibdir)/lib%.so.$(version_M)
+	exec $(INSTALL) -D -l ..$(subst $(sproot),,$(exthome))/library.so/$(<F) $@
+
+.PHONY: update global-links
+
+endif
+
+$(DESTDIR)$(datadir)/%: src/etc/%
+	exec $(INSTALL) -D -m 644 $< $@
+
+$(DESTDIR)$(dynlibdir)/lib%.so: lib%.so.xyzzy
+	$(INSTALL) -D -m 755 $< $@.$(version) && \
+	$(INSTALL) -l $(@F).$(version) $@.$(version_m) && \
+	$(INSTALL) -l $(@F).$(version_m) $@.$(version_M) && \
+	exec $(INSTALL) -l $(@F).$(version_M) $@
+
+$(DESTDIR)$(libexecdir)/% $(DESTDIR)$(bindir)/%: % package/modes
+	exec $(INSTALL) -D -m 600 $< $@
+	grep -- ^$(@F) < package/modes | { read name mode owner && \
+	if [ x$$owner != x ] ; then chown -- $$owner $@ ; fi && \
+	chmod $$mode $@ ; }
+
+$(DESTDIR)$(libdir)/lib%.a: lib%.a.xyzzy
+	exec $(INSTALL) -D -m 644 $< $@
+
+$(DESTDIR)$(includedir)/$(package)/%.h: src/include/$(package)/%.h
+	exec $(INSTALL) -D -m 644 $< $@
+
+%.o: %.c
+	exec $(REALCC) $(CPPFLAGS_ALL) $(CFLAGS_ALL) -c -o $@ $<
+
+%.lo: %.c
+	exec $(REALCC) $(CPPFLAGS_ALL) $(CFLAGS_ALL) $(CFLAGS_SHARED) -c -o $@ $<
+
+$(ALL_BINS):
+	exec $(REALCC) -o $@ $(CFLAGS_ALL) $(LDFLAGS_ALL) $(LDFLAGS_NOSHARED) $^ $(EXTRA_LIBS) $(LDLIBS)
+
+lib%.a.xyzzy:
+	exec $(AR) rc $@ $^
+	exec $(RANLIB) $@
+
+lib%.so.xyzzy:
+	exec $(REALCC) -o $@ $(CFLAGS_ALL) $(CFLAGS_SHARED) $(LDFLAGS_ALL) $(LDFLAGS_SHARED) -Wl,-soname,$(patsubst lib%.so.xyzzy,lib%.so.$(version_M),$@) $^ $(EXTRA_LIBS) $(LDLIBS)
+
+.PHONY: it all clean distclean tgz strip install install-dynlib install-bin install-lib install-include install-data
+
+.DELETE_ON_ERROR:
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..56f15bd
--- /dev/null
+++ b/README.md
@@ -0,0 +1,13 @@
+# justc-forstdin
+
+This is a quick and dirty fork of the [forstdin](http://skarnet.org/software/execline/forstdin.html) program.
+
+The only difference is it does not exit 1 if the input is empty, or missing a terminating newline.
+
+## Usage
+
+See `http://skarnet.org/software/execline/forstdin.html`
+
+## LICENSE
+
+ISC - see `LICENSE.md`
diff --git a/configure b/configure
new file mode 100755
index 0000000..bea6281
--- /dev/null
+++ b/configure
@@ -0,0 +1,474 @@
+#!/bin/sh
+
+# Copyright (c) 2011-2018 Laurent Bercot <ska-skaware@skarnet.org>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+
+. package/info
+
+usage () {
+cat <<EOF
+Usage: $0 [OPTION]... [TARGET]
+
+Defaults for the options are specified in brackets.
+
+System types:
+  --target=TARGET               configure to run on target TARGET [detected]
+  --host=TARGET                 same as --target
+
+Installation directories:
+  --prefix=PREFIX               main installation prefix [/]
+  --exec-prefix=EPREFIX         installation prefix for executable files [PREFIX]
+
+Fine tuning of the installation directories:
+  --dynlibdir=DIR               shared library files [PREFIX/lib]
+  --bindir=BINDIR               user executables [EPREFIX/bin]
+  --libexecdir=DIR              package-scoped executables [EPREFIX/libexec]
+  --libdir=DIR                  static library files [PREFIX/lib/$package]
+  --includedir=DIR              C header files [PREFIX/include]
+
+ If no --prefix option is given, by default libdir (but not dynlibdir) will be
+ /usr/lib/$package, and includedir will be /usr/include.
+
+Dependencies:
+  --with-sysdeps=DIR            use sysdeps in DIR [PREFIX/lib/skalibs/sysdeps]
+  --with-include=DIR            add DIR to the list of searched directories for headers
+  --with-lib=DIR                add DIR to the list of searched directories for static libraries
+  --with-dynlib=DIR             add DIR to the list of searched directories for shared libraries
+
+ If no --prefix option is given, by default sysdeps will be fetched from
+ /usr/lib/skalibs/sysdeps.
+
+Optional features:
+  --enable-shared               build shared libraries [disabled]
+  --disable-static              do not build static libraries [enabled]
+  --disable-allstatic           do not prefer linking against static libraries [enabled]
+  --enable-static-libc          make entirely static binaries [disabled]
+  --enable-all-pic              build everything as PIC [enabled iff toolchain builds PIE]
+  --enable-slashpackage[=ROOT]  assume /package installation at ROOT [disabled]
+  --enable-absolute-paths       do not rely on PATH to access this package's binaries,
+                                  hardcode absolute BINDIR/foobar paths instead [disabled]
+
+EOF
+exit 0
+}
+
+# Helper functions
+
+# If your system does not have printf, you can comment this, but it is
+# generally not a good idea to use echo.
+# See http://www.etalabs.net/sh_tricks.html
+echo () {
+  IFS=" "
+  printf %s\\n "$*"
+}
+
+quote () {
+  tr '\n' ' ' <<EOF | grep '^[-[:alnum:]_=,./:]* $' >/dev/null 2>&1 && { echo "$1" ; return 0 ; }
+$1
+EOF
+  echo "$1" | sed -e "s/'/'\\\\''/g" -e "1s/^/'/" -e "\$s/\$/'/" -e "s#^'\([-[:alnum:]_,./:]*\)=\(.*\)\$#\1='\2#" -e "s|\*/|* /|g"
+}
+
+fail () {
+  echo "$*"
+  exit 1
+}
+
+fnmatch () {
+  eval "case \"\$2\" in $1) return 0 ;; *) return 1 ;; esac"
+}
+
+cmdexists () {
+  type "$1" >/dev/null 2>&1
+}
+
+trycc () {
+  test -z "$CC_AUTO" && cmdexists "$1" && CC_AUTO="$*"
+}
+
+stripdir () {
+  while eval "fnmatch '*/' \"\${$1}\"" ; do
+    eval "$1=\${$1%/}"
+  done
+}
+
+tryflag () {
+  echo "checking whether compiler accepts $2 ..."
+  echo "typedef int x;" > "$tmpc"
+  if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST "$2" -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+    echo "  ... yes"
+    eval "$1=\"\${$1} \$2\""
+    eval "$1=\${$1# }"
+    return 0
+  else
+    echo "  ... no"
+    return 1
+  fi
+}
+
+tryldflag () {
+  echo "checking whether linker accepts $2 ..."
+  echo "typedef int x;" > "$tmpc"
+  if $CC_AUTO $CFLAGS_AUTO $CFLAGS $CFLAGS_POST $LDFLAGS_AUTO $LDFLAGS $LDFLAGS_POST -nostdlib "$2" -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+    echo "  ... yes"
+    eval "$1=\"\${$1} \$2\""
+    eval "$1=\${$1# }"
+    return 0
+  else
+    echo "  ... no"
+    return 1
+  fi
+}
+
+
+# Actual script
+
+CC_AUTO=
+CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE -iquote src/include-local -Isrc/include"
+CPPFLAGS_POST="$CPPFLAGS"
+CPPFLAGS=
+CFLAGS_AUTO="-pipe -Wall -Wextra"
+CFLAGS_POST="$CFLAGS"
+CFLAGS=-O2
+LDFLAGS_AUTO=
+LDFLAGS_POST="$LDFLAGS"
+LDFLAGS=
+LDFLAGS_NOSHARED=
+LDFLAGS_SHARED=-shared
+prefix=
+exec_prefix='$prefix'
+dynlibdir='$prefix/lib'
+libexecdir='$exec_prefix/libexec'
+bindir='$exec_prefix/bin'
+libdir='$prefix/lib/$package'
+includedir='$prefix/include'
+sysdeps='$prefix/lib/skalibs/sysdeps'
+manualsysdeps=false
+shared=false
+static=true
+allpic=detect
+slashpackage=false
+abspath=false
+sproot=
+home=
+exthome=
+allstatic=true
+evenmorestatic=false
+addincpath=''
+addlibspath=''
+addlibdpath=''
+vpaths=''
+vpathd=''
+build=
+
+for arg ; do
+  case "$arg" in
+    --help) usage ;;
+    --prefix=*) prefix=${arg#*=} ;;
+    --exec-prefix=*) exec_prefix=${arg#*=} ;;
+    --dynlibdir=*) dynlibdir=${arg#*=} ;;
+    --libexecdir=*) libexecdir=${arg#*=} ;;
+    --bindir=*) bindir=${arg#*=} ;;
+    --libdir=*) libdir=${arg#*=} ;;
+    --includedir=*) includedir=${arg#*=} ;;
+    --with-sysdeps=*) sysdeps=${arg#*=} manualsysdeps=true ;;
+    --with-include=*) var=${arg#*=} ; stripdir var ; addincpath="$addincpath -I$var" ;;
+    --with-lib=*) var=${arg#*=} ; stripdir var ; addlibspath="$addlibspath -L$var" ; vpaths="$vpaths $var" ;;
+    --with-dynlib=*) var=${arg#*=} ; stripdir var ; addlibdpath="$addlibdpath -L$var" ; vpathd="$vpathd $var" ;;
+    --enable-shared|--enable-shared=yes) shared=true ;;
+    --disable-shared|--enable-shared=no) shared=false ;;
+    --enable-static|--enable-static=yes) static=true ;;
+    --disable-static|--enable-static=no) static=false ;;
+    --enable-allstatic|--enable-allstatic=yes) allstatic=true ;;
+    --disable-allstatic|--enable-allstatic=no) allstatic=false ; evenmorestatic=false ;;
+    --enable-static-libc|--enable-static-libc=yes) allstatic=true ; evenmorestatic=true ;;
+    --disable-static-libc|--enable-static-libc=no) evenmorestatic=false ;;
+    --enable-all-pic|--enable-all-pic=yes) allpic=true ;;
+    --disable-all-pic|--enable-all-pic=no) allpic=false ;;
+    --enable-slashpackage=*) sproot=${arg#*=} ; slashpackage=true ; ;;
+    --enable-slashpackage) sproot= ; slashpackage=true ;;
+    --disable-slashpackage) sproot= ; slashpackage=false ;;
+    --enable-absolute-paths|--enable-absolute-paths=yes) abspath=true ;;
+    --disable-absolute-paths|--enable-absolute-paths=no) abspath=false ;;
+    --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
+    --host=*|--target=*) target=${arg#*=} ;;
+    --build=*) build=${arg#*=} ;;
+    -* ) echo "$0: unknown option $arg" ;;
+    *=*) ;;
+    *) target=$arg ;;
+  esac
+done
+
+# Add /usr in the default default case
+if test -z "$prefix" ; then
+  if test "$libdir" = '$prefix/lib/$package' ; then
+    libdir=/usr/lib/$package
+  fi
+  if test "$includedir" = '$prefix/include' ; then
+    includedir=/usr/include
+  fi
+  if test "$sysdeps" = '$prefix/lib/skalibs/sysdeps' ; then
+    sysdeps=/usr/lib/skalibs/sysdeps
+  fi
+fi
+
+# Expand installation directories
+stripdir prefix
+for i in exec_prefix dynlibdir libexecdir bindir libdir includedir sysdeps sproot ; do
+  eval tmp=\${$i}
+  eval $i=$tmp
+  stripdir $i
+done
+
+# Get usable temp filenames
+i=0
+set -C
+while : ; do
+  i=$(($i+1))
+  tmpc="./tmp-configure-$$-$PPID-$i.c"
+  tmpe="./tmp-configure-$$-$PPID-$i.tmp"
+  2>|/dev/null > "$tmpc" && break
+  2>|/dev/null > "$tmpe" && break
+  test "$i" -gt 50 && fail "$0: cannot create temporary files"
+done
+set +C
+trap 'rm -f "$tmpc" "$tmpe"' EXIT ABRT INT QUIT TERM HUP
+
+# Set slashpackage values
+if $slashpackage ; then
+  home=${sproot}/package/${category}/${package}-${version}
+  exthome=${sproot}/package/${category}/${package}
+  if $manualsysdeps ; then
+    :
+  else
+    sysdeps=${sproot}/package/prog/skalibs/sysdeps
+  fi
+  extbinprefix=${exthome}/command
+  dynlibdir=${home}/library.so
+  bindir=${home}/command
+  libdir=${home}/library
+  libexecdir=$bindir
+  includedir=${home}/include
+  while read dep ; do
+    addincpath="$addincpath -I${sproot}${dep}/include"
+    vpaths="$vpaths ${sproot}${dep}/library"
+    addlibspath="$addlibspath -L${sproot}${dep}/library"
+    vpathd="$vpathd ${sproot}${dep}/library.so"
+    addlibdpath="$addlibdpath -L${sproot}${dep}/library.so"
+  done < package/deps-build
+fi
+
+# Find a C compiler to use
+if test -n "$target" && test x${build} != x${target} ; then
+  cross=${target}-
+else
+  cross=
+fi
+echo "checking for C compiler..."
+trycc ${cross}${CC}
+trycc ${cross}gcc
+trycc ${cross}clang
+trycc ${cross}cc
+test -n "$CC_AUTO" || { echo "$0: cannot find a C compiler" ; exit 1 ; }
+echo "  ... $CC_AUTO"
+echo "checking whether C compiler works... "
+echo "typedef int x;" > "$tmpc"
+if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -c -o /dev/null "$tmpc" 2>"$tmpe" ; then
+  echo "  ... yes"
+else
+  echo "  ... no. Compiler output follows:"
+  cat < "$tmpe"
+  exit 1
+fi
+
+echo "checking target system type..."
+if test -z "$target" ; then
+  if test -n "$build" ; then
+    target=$build ;
+  else
+    target=$($CC_AUTO -dumpmachine 2>/dev/null) || target=unknown
+  fi
+fi
+echo "  ... $target"
+if test ! -d $sysdeps || test ! -f $sysdeps/target ; then
+  echo "$0: error: $sysdeps is not a valid sysdeps directory"
+  exit 1
+fi
+if [ "x$target" != "x$(cat $sysdeps/target)" ] ; then
+  echo "$0: error: target $target does not match the contents of $sysdeps/target"
+  exit 1
+fi
+
+if test $allpic = detect ; then
+  echo "Checking whether we need to build everything as PIC..."
+  if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -dM -E - < /dev/null | grep -qF __PIE__ ; then
+    allpic=true
+    echo "  ... yes"
+  else
+    allpic=false
+    echo "  ... no"
+  fi
+fi
+if $allpic ; then
+  tryflag CFLAGS_AUTO -fPIC
+fi
+
+spawn_lib=$(cat $sysdeps/spawn.lib)
+socket_lib=$(cat $sysdeps/socket.lib)
+sysclock_lib=$(cat $sysdeps/sysclock.lib)
+timer_lib=$(cat $sysdeps/timer.lib)
+util_lib=$(cat $sysdeps/util.lib)
+
+tryflag CFLAGS_AUTO -std=c99
+tryflag CFLAGS -fomit-frame-pointer
+tryflag CFLAGS_AUTO -fno-exceptions
+tryflag CFLAGS_AUTO -fno-unwind-tables
+tryflag CFLAGS_AUTO -fno-asynchronous-unwind-tables
+tryflag CFLAGS_AUTO -Wa,--noexecstack
+tryflag CFLAGS -fno-stack-protector
+tryflag CPPFLAGS_AUTO -Werror=implicit-function-declaration
+tryflag CPPFLAGS_AUTO -Werror=implicit-int
+tryflag CPPFLAGS_AUTO -Werror=pointer-sign
+tryflag CPPFLAGS_AUTO -Werror=pointer-arith
+tryflag CFLAGS_AUTO -ffunction-sections
+tryflag CFLAGS_AUTO -fdata-sections
+
+tryldflag LDFLAGS_AUTO -Wl,--sort-section=alignment
+tryldflag LDFLAGS_AUTO -Wl,--sort-common
+
+CPPFLAGS_AUTO="${CPPFLAGS_AUTO}${addincpath}"
+
+if $evenmorestatic ; then
+  LDFLAGS_NOSHARED=-static
+fi
+
+if $shared ; then
+  tryldflag LDFLAGS -Wl,--hash-style=both
+fi
+
+LDFLAGS_SHARED="${LDFLAGS_SHARED}${addlibdpath}"
+
+if $allstatic ; then
+  LDFLAGS_NOSHARED="${LDFLAGS_NOSHARED}${addlibspath}"
+  tryldflag LDFLAGS_NOSHARED -Wl,--gc-sections
+else
+  LDFLAGS_NOSHARED="${LDFLAGS_NOSHARED}${addlibdpath}"
+fi
+
+if test -z "$vpaths" ; then
+  while read dep ; do
+    base=$(basename $dep) ;
+    vpaths="$vpaths /usr/lib/$base"
+    addlibspath="$addlibspath -L/usr/lib/$base"
+  done < package/deps-build  
+fi
+
+echo "creating config.mak..."
+cmdline=$(quote "$0")
+for i ; do cmdline="$cmdline $(quote "$i")" ; done
+exec 3>&1 1>config.mak
+cat << EOF
+# This file was generated by:
+# $cmdline
+# Any changes made here will be lost if configure is re-run.
+
+target := $target
+package := $package
+prefix := $prefix
+exec_prefix := $exec_prefix
+dynlibdir := $dynlibdir
+libexecdir := $libexecdir
+bindir := $bindir
+libdir := $libdir
+includedir := $includedir
+sysdeps := $sysdeps
+slashpackage := $slashpackage
+sproot := $sproot
+version := $version
+home := $home
+exthome := $exthome
+SPAWN_LIB := ${spawn_lib}
+SOCKET_LIB := ${socket_lib}
+SYSCLOCK_LIB := ${sysclock_lib}
+TIMER_LIB := ${timer_lib}
+UTIL_LIB := ${util_lib}
+
+CC := ${CC_AUTO##${cross}}
+CPPFLAGS_AUTO := $CPPFLAGS_AUTO
+CPPFLAGS := $CPPFLAGS $CPPFLAGS_POST
+CFLAGS_AUTO := $CFLAGS_AUTO
+CFLAGS := $CFLAGS $CFLAGS_POST
+LDFLAGS_AUTO := $LDFLAGS_AUTO
+LDFLAGS := $LDFLAGS $LDFLAGS_POST
+LDFLAGS_SHARED := $LDFLAGS_SHARED
+LDFLAGS_NOSHARED := $LDFLAGS_NOSHARED
+CROSS_COMPILE := $cross
+
+vpath lib%.a$vpaths
+vpath lib%.so$vpathd
+EOF
+if $allstatic ; then
+  echo ".LIBPATTERNS := lib%.a"
+  echo "DO_ALLSTATIC := 1"
+else
+  echo ".LIBPATTERNS := lib%.so"
+fi
+if $static ; then
+  echo "DO_STATIC := 1"
+else
+  echo "DO_STATIC :="
+fi
+if $shared ; then
+  echo "DO_SHARED := 1"
+else
+  echo "DO_SHARED :="
+fi
+if $allpic ; then
+  echo "STATIC_LIBS_ARE_PIC := 1"
+else
+  echo "STATIC_LIBS_ARE_PIC :="
+fi
+
+exec 1>&3 3>&-
+echo "  ... done."
+
+echo "creating src/include/${package}/config.h..."
+mkdir -p -m 0755 src/include/${package}
+exec 3>&1 1> src/include/${package}/config.h
+cat <<EOF
+/* BSD license. */
+
+/* Generated by: $cmdline */
+
+#ifndef ${package_macro_name}_CONFIG_H
+#define ${package_macro_name}_CONFIG_H
+
+#define ${package_macro_name}_VERSION "$version"
+EOF
+if $slashpackage ; then
+  echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"$extbinprefix/\""
+elif $abspath ; then
+  echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"$bindir/\""
+else
+  echo "#define ${package_macro_name}_BINPREFIX \"\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"\""
+fi
+echo "#define ${package_macro_name}_LIBEXECPREFIX \"$libexecdir/\""
+echo
+echo "#endif"
+exec 1>&3 3>&-
+echo "  ... done."
diff --git a/package/deps-build b/package/deps-build
new file mode 100644
index 0000000..a966904
--- /dev/null
+++ b/package/deps-build
@@ -0,0 +1,2 @@
+/package/prog/skalibs
+/package/admin/execline
diff --git a/package/deps.mak b/package/deps.mak
new file mode 100644
index 0000000..77f6e8c
--- /dev/null
+++ b/package/deps.mak
@@ -0,0 +1,8 @@
+#
+# This file has been generated by tools/gen-deps.sh
+#
+
+src/justc-forstdin/justc-forstdin.o src/justc-forstdin/justc-forstdin.lo: src/justc-forstdin/justc-forstdin.c
+
+justc-forstdin: EXTRA_LIBS :=
+justc-forstdin: src/justc-forstdin/justc-forstdin.o -lexecline -lskarnet
diff --git a/package/info b/package/info
new file mode 100644
index 0000000..8d6fd21
--- /dev/null
+++ b/package/info
@@ -0,0 +1,4 @@
+package=justc-forstdin
+version=1.0.0
+category=admin
+package_macro_name=JUSTC_FORSTDIN
diff --git a/package/modes b/package/modes
new file mode 100644
index 0000000..658a5d8
--- /dev/null
+++ b/package/modes
@@ -0,0 +1 @@
+justc-forstdin 0755
diff --git a/package/targets.mak b/package/targets.mak
new file mode 100644
index 0000000..b3235de
--- /dev/null
+++ b/package/targets.mak
@@ -0,0 +1,4 @@
+BIN_TARGETS := justc-forstdin
+LIBEXEC_TARGETS :=
+
+
diff --git a/src/justc-forstdin/deps-exe/justc-forstdin b/src/justc-forstdin/deps-exe/justc-forstdin
new file mode 100644
index 0000000..8c3ba3b
--- /dev/null
+++ b/src/justc-forstdin/deps-exe/justc-forstdin
@@ -0,0 +1,2 @@
+-lexecline
+-lskarnet
diff --git a/src/justc-forstdin/justc-forstdin.c b/src/justc-forstdin/justc-forstdin.c
new file mode 100644
index 0000000..c228840
--- /dev/null
+++ b/src/justc-forstdin/justc-forstdin.c
@@ -0,0 +1,159 @@
+/* ISC license. */
+
+/* copied and modified from upstream forstdin:
+ * no checking for EOF (just return 0 on an empty file)
+ * use skagetlnsep_loose to ensure final line (possibly missing null) is called
+ */
+
+#include <string.h>
+#include <errno.h>
+
+#include <skalibs/types.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/buffer.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/genalloc.h>
+#include <skalibs/sig.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/skamisc.h>
+#include <skalibs/netstring.h>
+
+#include <execline/execline.h>
+
+#define USAGE "forstdin [ -E | -e ] [ -p | -o okcode,okcode,... | -x breakcode,breakcode,... ] [ -N | -n ] [ -C | -c ] [ -0 | -d delim ] var command..."
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static genalloc pids = GENALLOC_ZERO ; /* pid_t */
+
+static int isok (unsigned short *tab, unsigned int n, int code)
+{
+  unsigned int i = 0 ;
+  for (; i < n ; i++) if ((unsigned short)code == tab[i]) break ;
+  return i < n ;
+}
+
+static void parallel_sigchld_handler (int sig)
+{
+  pid_t *tab = genalloc_s(pid_t, &pids) ;
+  size_t len = genalloc_len(pid_t, &pids) ;
+  int wstat ;
+  for (;;)
+  {
+    ssize_t r = wait_pids_nohang(tab, len, &wstat) ;
+    if (r <= 0) break ;
+    tab[r-1] = tab[--len] ;
+  }
+  genalloc_setlen(pid_t, &pids, len) ;
+  (void)sig ;
+}
+
+int main (int argc, char const **argv)
+{
+  stralloc value = STRALLOC_ZERO ;
+  char const *delim = "\n" ;
+  size_t delimlen = 1 ;
+  size_t nbc = 0 ;
+  unsigned short okcodes[256] ;
+  int crunch = 0, chomp = 1, not = 1, doimport = 0 ;
+  PROG = "forstdin" ;
+  {
+    subgetopt l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      int opt = subgetopt_r(argc, argv, "pNnCc0d:o:x:Ee", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'p' :
+        {
+          if (!genalloc_ready(pid_t, &pids, 1))
+            strerr_diefu1sys(111, "genalloc_ready") ;
+          break ;
+        }
+        case 'N' : chomp = 0 ; break ;
+        case 'n' : chomp = 1 ; break ;
+        case 'C' : crunch = 1 ; break ;
+        case 'c' : crunch = 0 ; break ;
+        case '0' : delim = "" ; delimlen = 1 ; break ;
+        case 'd' : delim = l.arg ; delimlen = strlen(delim) ; break ;
+        case 'o' :
+          not = 0 ;
+          if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
+          break ;
+        case 'x' :
+          not = 1 ;
+          if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
+          break ;
+        case 'E' : doimport = 1 ; break ;
+        case 'e' : doimport = 0 ; break ;
+        default : dieusage() ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (argc < 2) dieusage() ;
+  if (!argv[0][0] || strchr(argv[0], '=')) strerr_dief1x(100, "invalid variable name") ;
+
+  if (pids.s)
+  {
+    if (!sig_catch(SIGCHLD, &parallel_sigchld_handler))
+      strerr_diefu1sys(111, "install SIGCHLD handler") ;
+  }
+  for (;;)
+  {
+    pid_t pid ;
+    value.len = 0 ;
+    if (delimlen)
+    {
+      int r = skagetlnsep_loose(buffer_0, &value, delim, delimlen) ;
+      if (!r) break ;
+      else if (r < 0)
+      {
+        if (errno != EPIPE) strerr_diefu1sys(111, "skagetlnsep") ;
+        if (chomp) break ;
+      }
+      if (crunch && value.len == 1) continue ;
+      if (chomp) value.len-- ;
+    }
+    else
+    {
+      size_t unread = 0 ;
+      if (netstring_get(buffer_0, &value, &unread) <= 0)
+      {
+        if (netstring_okeof(buffer_0, unread)) break ;
+        else strerr_diefu1sys(111, "netstring_get") ;
+      }
+    }
+    if (!stralloc_0(&value)) strerr_diefu1sys(111, "stralloc_0") ;
+    if (pids.s) sig_block(SIGCHLD) ;
+    pid = el_modif_and_spawn(argv + 1, argv[0], value.s, doimport) ;
+    if (!pid) strerr_diefu2sys(111, "spawn ", argv[1]) ;
+    if (pids.s)
+    {
+      if (!genalloc_append(pid_t, &pids, &pid))
+        strerr_diefu1sys(111, "genalloc_append") ;
+      sig_unblock(SIGCHLD) ;
+    }
+    else
+    {
+      int wstat ;
+      if (wait_pid(pid, &wstat) < 0)
+        strerr_diefu2sys(111, "wait for ", argv[1]) ;
+      if (not == isok(okcodes, nbc, wait_estatus(wstat)))
+        return wait_estatus(wstat) ;
+    }
+  }
+  if (pids.s)
+  {
+    sigset_t empty ;
+    sigemptyset(&empty) ;
+    sig_block(SIGCHLD) ;
+    for (;;)
+    {
+      if (!pids.len) break ;
+      sigsuspend(&empty) ;
+    }
+  }
+  return 0 ;
+}
diff --git a/tools/gen-deps.sh b/tools/gen-deps.sh
new file mode 100755
index 0000000..6383ac2
--- /dev/null
+++ b/tools/gen-deps.sh
@@ -0,0 +1,93 @@
+#!/bin/sh -e
+
+. package/info
+
+echo '#'
+echo '# This file has been generated by tools/gen-deps.sh'
+echo '#'
+echo
+
+for dir in src/include/${package} src/* ; do
+  for file in $(ls -1 $dir | grep -- \\.h$) ; do
+    {
+      grep -F -- "#include <${package}/" < ${dir}/$file | cut -d'<' -f2 | cut -d'>' -f1 ;
+      grep -- '#include ".*\.h"' < ${dir}/$file | cut -d'"' -f2
+    } | sort -u | {
+      deps=
+      while read dep ; do
+        if echo $dep | grep -q "^${package}/" ; then
+          deps="$deps src/include/$dep"
+        elif test -f "${dir}/$dep" ; then
+          deps="$deps ${dir}/$dep"
+        else
+          deps="$deps src/include-local/$dep"
+        fi
+      done
+      if test -n "$deps" ; then
+        echo "${dir}/${file}:${deps}"
+      fi
+    }
+  done
+done
+
+for dir in src/* ; do
+  for file in $(ls -1 $dir | grep -- \\.c$) ; do
+    {
+      grep -F -- "#include <${package}/" < ${dir}/$file | cut -d'<' -f2 | cut -d'>' -f1 ;
+      grep -- '#include ".*\.h"' < ${dir}/$file | cut -d'"' -f2
+    } | sort -u | {
+      deps=" ${dir}/$file"
+      while read dep ; do
+        if echo $dep | grep -q "^${package}/" ; then
+          deps="$deps src/include/$dep"
+        elif test -f "${dir}/$dep" ; then
+          deps="$deps ${dir}/$dep"
+        else
+          deps="$deps src/include-local/$dep"
+        fi
+      done
+      o=$(echo $file | sed s/\\.c$/.o/)
+      lo=$(echo $file | sed s/\\.c$/.lo/)
+      echo "${dir}/${o} ${dir}/${lo}:${deps}"
+    }
+  done
+done
+echo
+
+for dir in $(ls -1 src | grep -v ^include) ; do
+  for file in $(ls -1 src/$dir/deps-lib) ; do
+    deps=
+    libs=
+    while read dep ; do
+      if echo $dep | grep -q -e ^-l -e '^\${.*_LIB}' ; then
+        libs="$libs $dep"
+      else
+        deps="$deps src/$dir/$dep"
+      fi
+    done < src/$dir/deps-lib/$file
+    echo 'ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)'
+    echo "lib${file}.a.xyzzy:$deps"
+    echo else
+    echo "lib${file}.a.xyzzy:$(echo "$deps" | sed 's/\.o/.lo/g')"
+    echo endif
+    echo "lib${file}.so.xyzzy: EXTRA_LIBS :=$libs"
+    echo "lib${file}.so.xyzzy:$(echo "$deps" | sed 's/\.o/.lo/g')"
+  done
+
+  for file in $(ls -1 src/$dir/deps-exe) ; do
+    deps=
+    libs=
+    while read dep ; do
+      if echo $dep | grep -q -- \\.o$ ; then
+        dep="src/$dir/$dep"
+      fi
+      if echo $dep | grep -q -- '^\${.*_LIB}' ; then
+        libs="$libs $dep"
+      else
+        deps="$deps $dep"
+      fi
+    done < src/$dir/deps-exe/$file
+    echo "$file: EXTRA_LIBS :=$libs"
+    echo "$file: src/$dir/$file.o$deps"
+  done
+done
diff --git a/tools/install.sh b/tools/install.sh
new file mode 100755
index 0000000..89f9428
--- /dev/null
+++ b/tools/install.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+
+usage() {
+  echo "usage: $0 [-D] [-l] [-m mode] src dst" 1>&2
+  exit 1
+}
+
+mkdirp=false
+symlink=false
+mode=0755
+
+while getopts Dlm: name ; do
+  case "$name" in
+    D) mkdirp=true ;;
+    l) symlink=true ;;
+    m) mode=$OPTARG ;;
+    ?) usage ;;
+  esac
+done
+shift $(($OPTIND - 1))
+
+test "$#" -eq 2 || usage
+src=$1
+dst=$2
+tmp="$dst.tmp.$$"
+
+case "$dst" in
+  */) echo "$0: $dst ends in /" 1>&2 ; exit 1 ;;
+esac
+
+set -C
+set -e
+
+if $mkdirp ; then
+  umask 022
+  case "$2" in
+    */*) mkdir -p "${dst%/*}" ;;
+  esac
+fi
+
+trap 'rm -f "$tmp"' EXIT INT QUIT TERM HUP
+
+umask 077
+
+if $symlink ; then
+  ln -s "$src" "$tmp"
+else
+  cat < "$1" > "$tmp"
+  chmod "$mode" "$tmp"
+fi
+
+mv -f "$tmp" "$dst"
+if test -d "$dst" ; then
+  rm -f "$dst/$(basename $tmp)"
+  if $symlink ; then
+    mkdir "$tmp"
+    ln -s "$src" "$tmp/$(basename $dst)"
+    mv -f "$tmp/$(basename $dst)" "${dst%/*}"
+    rmdir "$tmp"
+  else
+    echo "$0: $dst is a directory" 1>&2
+    exit 1
+  fi
+fi
diff --git a/tools/keys.tar.xz.enc b/tools/keys.tar.xz.enc
new file mode 100644
index 0000000..0c8481b
Binary files /dev/null and b/tools/keys.tar.xz.enc differ