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 # For heaven's sake auto-redirect on SunOS/Solaris
  10 if [ "x${SHELL}" = x ] || [ "${SHELL}" = /bin/sh ] && \
  11       [ -f /usr/xpg4/bin/sh ] && [ -x /usr/xpg4/bin/sh ]; then
  12    SHELL=/usr/xpg4/bin/sh
  13    export SHELL
  14    exec /usr/xpg4/bin/sh "${0}" "${@}"
  15 fi
  16 [ -n "${SHELL}" ] || SHELL=/bin/sh
  17 export SHELL
  18
  19 ( set -o noglob ) >/dev/null 2>&1 && noglob_shell=1 || unset noglob_shell
  20
  21 config_exit() {
  22    exit ${1}
  23 }
  24
  25 msg() {
  26    fmt=${1}
  27    shift
  28    printf >&2 -- "${fmt}\\n" "${@}"
  29 }
  30
  31 # which(1) not standardized, command(1) -v may return non-executable: unroll!
  32 acmd_test() { __acmd "${1}" 1 0 0; }
  33 acmd_test_fail() { __acmd "${1}" 1 1 0; }
  34 acmd_set() { __acmd "${2}" 0 0 0 "${1}"; }
  35 acmd_set_fail() { __acmd "${2}" 0 1 0 "${1}"; }
  36 acmd_testandset() { __acmd "${2}" 1 0 0 "${1}"; }
  37 acmd_testandset_fail() { __acmd "${2}" 1 1 0 "${1}"; }
  38 thecmd_set() { __acmd "${2}" 0 0 1 "${1}"; }
  39 thecmd_set_fail() { __acmd "${2}" 0 1 1 "${1}"; }
  40 thecmd_testandset() { __acmd "${2}" 1 0 1 "${1}"; }
  41 thecmd_testandset_fail() { __acmd "${2}" 1 1 1 "${1}"; }
  42 __acmd() {
  43    pname=${1} dotest=${2} dofail=${3} verbok=${4} varname=${5}
  44
  45    if [ "${dotest}" -ne 0 ]; then
  46       eval dotest=\$${varname}
  47       if [ -n "${dotest}" ]; then
  48          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
  49             msg ' . ${%s} ... %s' "${pname}" "${dotest}"
  50          return 0
  51       fi
  52    fi
  53
  54    oifs=${IFS} IFS=:
  55    [ -n "${noglob_shell}" ] && set -o noglob
  56    set -- ${PATH}
  57    [ -n "${noglob_shell}" ] && set +o noglob
  58    IFS=${oifs}
  59    for path
  60    do
  61       if [ -z "${path}" ] || [ "${path}" = . ]; then
  62          if [ -d "${PWD}" ]; then
  63             path=${PWD}
  64          else
  65             path=.
  66          fi
  67       fi
  68       if [ -f "${path}/${pname}" ] && [ -x "${path}/${pname}" ]; then
  69          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
  70             msg ' . ${%s} ... %s' "${pname}" "${path}/${pname}"
  71          [ -n "${varname}" ] && eval ${varname}="${path}/${pname}"
  72          return 0
  73       fi
  74    done
  75
  76    # We may have no builtin string functions, we yet have no programs we can
  77    # use, try to access once from the root, assuming it is an absolute path if
  78    # that finds the executable
  79    if ( cd && [ -f "${pname}" ] && [ -x "${pname}" ] ); then
  80      [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
  81             msg ' . ${%s} ... %s' "${pname}" "${pname}"
  82       [ -n "${varname}" ] && eval ${varname}="${pname}"
  83       return 0
  84    fi
  85
  86    [ ${dofail} -eq 0 ] && return 1
  87    msg 'ERROR: no trace of utility '"${pname}"
  88    exit 1
  89 }
  90
  91 syno() {
  92    if [ ${#} -gt 0 ]; then
  93       echo >&2 "ERROR: ${*}"
  94       echo >&2
  95    fi
  96    echo >&2 'Synopsis: SOURCEDIR/make-emerge.sh [from within target directory]'
  97    exit 1
  98 }
  99
 100 [ ${#} -eq 0 ] || syno
 101
 102 # Rude simple, we should test for Solaris, but who runs this script?
 103 if [ -d /usr/xpg4 ]; then
 104    PATH=/usr/xpg4/bin:${PATH}
 105 fi
 106
 107 thecmd_testandset_fail awk awk
 108 thecmd_testandset_fail cp cp
 109 thecmd_testandset_fail dirname dirname
 110 thecmd_testandset_fail pwd pwd
 111
 112 srcdir=`${dirname} ${0}`
 113 if [ "${srcdir}" = . ]; then
 114    msg 'This is not out of tree?!'
 115    config_exit 1
 116 fi
 117 srcdir=`cd ${srcdir}; ${pwd}`/
 118 blddir=`${pwd}`/
 119 echo 'Initializing out-of-tree build.'
 120 echo 'Source directory: '"${srcdir}"
 121 echo 'Build directory : '"${blddir}"
 122 srcdir="${srcdir}"/
 123
 124 ${awk} -v srcdir="${srcdir}" -v blddir="${blddir}" '
 125    {
 126       gsub(/^CWDDIR=.*$/, "CWDDIR=" blddir)
 127       gsub(/^SRCDIR=.*$/, "SRCDIR=" srcdir)
 128       print
 129    }
 130    ' < "${srcdir}"makefile > ./makefile
 131
 132 ${cp} "${srcdir}"config.h ./
 133 ${cp} "${srcdir}"gen-version.h ./
 134 ${cp} "${srcdir}"make.rc ./
 135
 136 echo 'You should now be able to proceed as normal (e.g., "$ make all")'
 137
 138 # s-sh-mode