autogen.sh

   1 #!/bin/sh -x
   2 #
   3 # Run this script to regenerate autoconf files
   4 #
   5 recheck=false
   6 for arg; do
   7     case x"$arg" in
   8         x--recheck)
   9             recheck=true
  10             config=$(sh config.status --config 2>/dev/null)
  11             ;;
  12         x--clearenv)
  13             unset AUTOCONF AUTOMAKE ACLOCAL AUTOHEADER ACLOCAL_PATH
  14             ;;
  15         *)
  16             echo "$0: unknown option: $arg" 1>&2
  17             ;;
  18     esac
  19 done
  20
  21 # This allows for overriding the default autoconf programs
  22 AUTOCONF="${AUTOCONF:-${AUTOTOOLS_PREFIX}autoconf}"
  23 AUTOMAKE="${AUTOMAKE:-${AUTOTOOLS_PREFIX}automake}"
  24 ACLOCAL="${ACLOCAL:-${AUTOTOOLS_PREFIX}aclocal}"
  25 AUTOHEADER="${AUTOHEADER:-${AUTOTOOLS_PREFIX}autoheader}"
  26
  27 mkdir -p autoconf autoconf/helpers config
  28 autolib="`"$AUTOMAKE" --print-libdir`"
  29 if test ! x"$autolib" = x; then
  30     for prg in install-sh compile config.guess config.sub; do
  31         # Update autoconf helpers if and only if newer ones are available
  32         if test -f "$autolib"/"$prg" && \
  33                 ( set -e ; \
  34                   test -f autoconf/helpers/"$prg" && sed -n \
  35                     -e 's/^scriptver=/scriptversion=/' \
  36                     -e 's/^timestamp=/scriptversion=/' \
  37                     -e 's/^scriptversion=['\''"]?\([^'\''"]*\).*$/\1/p' \
  38                           "$autolib"/"$prg" autoconf/helpers/"$prg" | \
  39                           sort -c 2>/dev/null ; \
  40                   test $? -ne 0 )
  41         then
  42             cp -f "$autolib"/"$prg" autoconf/helpers
  43         fi
  44     done
  45 fi
  46 mv -f autoconf/aclocal.m4 autoconf/aclocal.m4.old
  47 mkdir -p autoconf/m4.old autoconf/m4
  48 mv -f autoconf/m4/*.m4 autoconf/m4.old/ 2>/dev/null || true
  49 ACLOCAL_PATH="${ACLOCAL_PATH}${ACLOCAL_PATH:+:}`pwd`/autoconf/m4.old"
  50 export ACLOCAL_PATH
  51 "$ACLOCAL" --install --output=autoconf/aclocal.m4 -I autoconf/m4
  52 if test ! -f autoconf/aclocal.m4; then
  53     # aclocal failed, revert to previous files
  54     mv -f autoconf/m4.old/*.m4 autoconf/m4/
  55     mv -f autoconf/aclocal.m4.old autoconf/aclocal.m4
  56     exit 1
  57 fi
  58 rm -rf autoconf/*m4.old
  59 "$AUTOHEADER" -B autoconf
  60 "$AUTOCONF" -B autoconf
  61 (
  62     echo '#!/bin/sh'
  63     "$AUTOCONF" -B autoconf \
  64                 -t AC_CONFIG_HEADERS:'rm -f $*' \
  65                 -t AC_CONFIG_FILES:'rm -f $*'
  66     echo 'rm -f config.log config.status'
  67     echo 'rm -rf autom4te.cache'
  68 ) > autoconf/clean.sh
  69 chmod +x autoconf/clean.sh
  70 sh autoconf/clean.sh
  71
  72 rm -f configure~ || true
  73
  74 # Try to regenerate unconfig.h if Perl is available and unconfig.pl
  75 # is present in the autoconf directory.
  76 if [ -n "$(which perl)" -a -f autoconf/unconfig.pl ]; then
  77     perl autoconf/unconfig.pl . config/config.h.in config/unconfig.h
  78 fi
  79
  80 if $recheck; then
  81     # This bizarre statement has to do with how config.status quotes its output
  82     echo exec sh configure $config | sh -
  83 fi