make-emerge.sh

   1 #!/bin/sh -
   2 #@ Out-of-tree compilation support, à la
   3 #@    $ cd /tmp && mkdir build && cd build &&
   4 #@       ~/src/nail.git/make-emerge.sh && make tangerine DESTDIR=.ddir
   5 # Public Domain
   6
   7 # See make-config.sh, the source of all this!
   8
   9 config_exit() {
  10    exit ${1}
  11 }
  12
  13 msg() {
  14    fmt=${1}
  15    shift
  16    printf >&2 -- "${fmt}\\n" "${@}"
  17 }
  18
  19 unset -f command
  20 check_tool() {
  21    n=${1} i=${2} opt=${3:-0}
  22    # Evaluate, just in case user comes in with shell snippets (..well..)
  23    eval i="${i}"
  24    if type "${i}" >/dev/null 2>&1; then # XXX why have i type not command -v?
  25       [ -n "${VERBOSE}" ] && msg ' . ${%s} ... %s' "${n}" "${i}"
  26       eval ${n}=${i}
  27       return 0
  28    fi
  29    if [ ${opt} -eq 0 ]; then
  30       msg 'ERROR: no trace of utility %s' "${n}"
  31       config_exit 1
  32    fi
  33    return 1
  34 }
  35
  36 syno() {
  37    if [ ${#} -gt 0 ]; then
  38       echo >&2 "ERROR: ${*}"
  39       echo >&2
  40    fi
  41    echo >&2 'Synopsis: SOURCEDIR/make-emerge.sh [from within target directory]'
  42    exit 1
  43 }
  44
  45 [ ${#} -eq 0 ] || syno
  46
  47 # Rude simple, we should test for Solaris, but who runs this script?
  48 if [ -d /usr/xpg4 ]; then
  49    PATH=/usr/xpg4/bin:${PATH}
  50 fi
  51
  52 check_tool awk "${awk:-`command -v awk`}"
  53 check_tool dirname "${dirname:-`command -v dirname`}"
  54 check_tool pwd "${pwd:-`command -v pwd`}"
  55
  56 srcdir=`${dirname} ${0}`
  57 blddir=`${pwd}`
  58 if [ "${srcdir}" = . ]; then
  59    echo >&2 'This is not out of tree?!'
  60    exit 1
  61 fi
  62 echo 'Initializing out-of-tree build.'
  63 echo 'Source directory: '"${srcdir}"
  64 echo 'Build directory : '"${blddir}"
  65 srcdir="${srcdir}"/
  66
  67 ${awk} -v srcdir="${srcdir}" -v blddir="${blddir}" '
  68    {
  69       gsub(/^SRCDIR=\.\/$/, "SRCDIR=" srcdir)
  70       print
  71    }
  72    ' < "${srcdir}"makefile > ./makefile
  73
  74 cp "${srcdir}"config.h ./
  75 cp "${srcdir}"gen-version.h ./
  76 cp "${srcdir}"make.rc ./
  77
  78 echo 'You should now be able to proceed as normal (e.g., "$ make all")'
  79
  80 # s-sh-mode