rt/m4/rt_layout.m4

   1 dnl
   2 dnl @synopsis RT_LAYOUT(configlayout, layoutname)
   3 dnl
   4 dnl This macro reads an Apache-style layout file (specified as the
   5 dnl configlayout parameter), and searches for a specific layout
   6 dnl (named using the layoutname parameter).
   7 dnl
   8 dnl The entries for a given layout are then inserted into the
   9 dnl environment such that they become available as substitution
  10 dnl variables. In addition, the rt_layout_name variable is set
  11 dnl (but not exported) if the layout is valid.
  12 dnl
  13 dnl This code is heavily borrowed *cough* from the Apache 2 codebase.
  14 dnl
  15
  16 AC_DEFUN([RT_LAYOUT],[
  17         if test ! -f $srcdir/config.layout; then
  18                 AC_MSG_WARN([Layout file $srcdir/config.layout not found])
  19                 rt_layout_name=no
  20         else
  21                 pldconf=./config.pld
  22                 $PERL  -0777 -p -e "\$layout = '$2';"  -e '
  23                 s/.*<Layout\s+$layout>//gims;
  24                 s/<\/Layout>.*//s;
  25                 s/^#.*$//gm;
  26                 s/^\s+//gim;
  27                 s/\s+$/\n/gim;
  28                 s/\+$/\/rt3/gim;
  29                 # m4 will not let us just use $1, we need @S|@1
  30 #               s/^((?:bin|sbin|libexec|data|sysconf|sharedstate|localstate|lib|include|oldinclude|info|man)dir)\s*:\s*(.*)$/@S|@1=@S|@2/gim;
  31                 # uh, should be [:=], but m4 apparently substitutes something...
  32                 s/^(.*?)\s*(?::|=)\s*(.*)$/\(test "x\@S|@@S|@1" = "xNONE" || test "x\@S|@@S|@1" = "x") && @S|@1=@S|@2/gim;
  33                  ' < $1 > $pldconf
  34
  35                 if test -s $pldconf; then
  36                         rt_layout_name=$2
  37                         . $pldconf
  38                         changequote({,})
  39                         for var in prefix exec_prefix bindir sbindir \
  40                                  sysconfdir mandir libdir datadir htmldir \
  41                                  localstatedir logfiledir masonstatedir \
  42                                  sessionstatedir customdir custometcdir customhtmldir \
  43                                  customlexdir customlibdir manualdir; do
  44                                 eval "val=\"\$$var\""
  45                                 val=`echo $val | sed -e 's:\(.\)/*$:\1:'`
  46                                 val=`echo $val |
  47                                         sed -e 's:[\$]\([a-z_]*\):${\1}:g'`
  48                                 eval "$var='$val'"
  49                         done
  50                         changequote([,])
  51                 else
  52                         rt_layout_name=no
  53                 fi
  54                 #rm $pldconf
  55         fi
  56         RT_SUBST_EXPANDED_ARG(prefix)
  57         RT_SUBST_EXPANDED_ARG(exec_prefix)
  58         RT_SUBST_EXPANDED_ARG(bindir)
  59         RT_SUBST_EXPANDED_ARG(sbindir)
  60         RT_SUBST_EXPANDED_ARG(sysconfdir)
  61         RT_SUBST_EXPANDED_ARG(mandir)
  62         RT_SUBST_EXPANDED_ARG(libdir)
  63         RT_SUBST_EXPANDED_ARG(datadir)
  64         RT_SUBST_EXPANDED_ARG(htmldir)
  65         RT_SUBST_EXPANDED_ARG(manualdir)
  66         RT_SUBST_EXPANDED_ARG(localstatedir)
  67         RT_SUBST_EXPANDED_ARG(logfiledir)
  68         RT_SUBST_EXPANDED_ARG(masonstatedir)
  69         RT_SUBST_EXPANDED_ARG(sessionstatedir)
  70         RT_SUBST_EXPANDED_ARG(customdir)
  71         RT_SUBST_EXPANDED_ARG(custometcdir)
  72         RT_SUBST_EXPANDED_ARG(customhtmldir)
  73         RT_SUBST_EXPANDED_ARG(customlexdir)
  74         RT_SUBST_EXPANDED_ARG(customlibdir)
  75 ])dnl