autogen.sh

   1 #!/bin/sh -x
   2 #
   3 # Run this script to regenerate autoconf files
   4 #
   5 recheck=false
   6 if [ x"$1" = x--recheck ]; then
   7     recheck=true
   8     config=$(sh config.status --config 2>/dev/null)
   9 fi
  10
  11 # This allows for overriding the default autoconf programs
  12 AUTOCONF="${AUTOCONF:-${AUTOTOOLS_PREFIX}autoconf}"
  13 AUTOMAKE="${AUTOMAKE:-${AUTOTOOLS_PREFIX}automake}"
  14 ACLOCAL="${ACLOCAL:-${AUTOTOOLS_PREFIX}aclocal}"
  15 AUTOHEADER="${AUTOHEADER:-${AUTOTOOLS_PREFIX}autoheader}"
  16
  17 mkdir -p autoconf autoconf/helpers config
  18 autolib="`"$AUTOMAKE" --print-libdir`"
  19 if test ! x"$autolib" = x; then
  20     for prg in install-sh compile config.guess config.sub; do
  21         # Update autoconf helpers if and only if newer ones are available
  22         if test -f "$autolib"/"$prg" && \
  23                 ( test -f "$autolib"/"$prg" && \
  24                       sed -n -r -e \
  25                           's/^(scriptver(|sion)|timestamp)=['\''"]?([^'\''"]+).*$/\3/p' \
  26                           "$autolib"/"$prg" autoconf/helpers/"$prg" | \
  27                           sort --check=quiet; test $? -ne 0 )
  28         then
  29             cp -f "$autolib"/"$prg" autoconf/helpers
  30         fi
  31     done
  32 fi
  33 mv -f autoconf/aclocal.m4 autoconf/aclocal.m4.old
  34 mkdir -p autoconf/m4.old autoconf/m4
  35 mv -f autoconf/m4/*.m4 autoconf/m4.old/ 2>/dev/null || true
  36 ACLOCAL_PATH="${ACLOCAL_PATH}${ACLOCAL_PATH:+:}`pwd`/autoconf/m4.old"
  37 export ACLOCAL_PATH
  38 "$ACLOCAL" --install --output=autoconf/aclocal.m4 -I autoconf/m4
  39 if test ! -f autoconf/aclocal.m4; then
  40     # aclocal failed, revert to previous files
  41     mv -f autoconf/m4.old/*.m4 autoconf/m4/
  42     mv -f autoconf/aclocal.m4.old autoconf/aclocal.m4
  43 fi
  44 rm -rf autoconf/*m4.old
  45 "$AUTOHEADER" -B autoconf
  46 if [ config/config.h.in -nt config/unconfig.h ]; then
  47     # Create a file corresponding to a completely empty configure
  48     # instance, commenting out the #undef directives from the template
  49     # just like configure would do.
  50     perl -np < config/config.h.in > config/unconfig.h \
  51          -e 's:^(\#\s*undef\s.*)$:/* $1 */:;' \
  52          -e 's:config/config.h.in:config/unconfig.h:;' \
  53          -e 's:autoheader:autogen.sh:;'
  54 fi
  55 "$AUTOCONF" -B autoconf
  56 rm -rf autom4te.cache config.log config.status config/config.h Makefile
  57
  58 if $recheck; then
  59     # This bizarre statement has to do with how config.status quotes its output
  60     echo exec sh configure $config | sh -
  61 fi