acinclude.m4

   1 dnl Convenient macros, by Mikhael Goikhman
   2
   3 dnl mg_ARG_WITH(NAME, HELP-STRING, VAR [, DEFAULT-VALUE])
   4 AC_DEFUN(mg_ARG_WITH, [
   5         AC_DIVERT_PUSH(HELP_WITH)dnl
   6 [$2]
   7 AC_DIVERT_POP()dnl
   8
   9         [#] Check whether --with-[$1] or --without-[$1] was given.
  10         withvar="[${with_]patsubst([$1], -, _)-no}"
  11         if test "$withvar" != no; then
  12                 withvar="[$with_]patsubst([$1], -, _)"
  13                 $3="$withvar"
  14         ifelse([$4], , , [else
  15                 $3=$4
  16         ])dnl
  17         fi
  18 ])
  19
  20 dnl mg_DEFAULT_DIR_ARG(ARG, DEFAULT_VALUE)
  21 AC_DEFUN(mg_DEFAULT_DIR_ARG, [
  22         var=`echo [$]$1`
  23         if echo "${var}NONE" | ${AWK} '/^\$|^NONE/ { exit 1 }'; then
  24                 $1=$var
  25         else
  26                 $1=$2
  27         fi
  28         case "[$]$1" in "") echo "No value for $1. Failed."; exit 1;; esac
  29 ])
  30
  31 dnl mg_LIST_MINUS(LIST1-VAR, LIST2-VAR, LIST3-VAR)
  32 AC_DEFUN(mg_LIST_MINUS, [
  33         list1=`echo [$]$1`
  34         list2=`echo [$]$2`
  35         $3=`${AWK} -v l1="${list1}" -v l2="${list2}" 'BEGIN {
  36                 split(l1, a1, / +/); split(l2, a2, / +/); l3 = "";
  37                 for (i1 in a1) {
  38                         u = 1; for (i2 in a2) { if (a1[[i1]] == a2[[i2]]) u = 0; }
  39                         if (u) l3 = l3 a1[[i1]] " ";
  40                 } print l3;
  41         }' | xargs -n 1 echo | sort`
  42         $3=`echo [$]$3`
  43 ])
  44
  45