1dnl Like AC_CHECK_FUNCS, but allows the function definition to be
2dnl a macro.  This allows for detection of functions which are renamed
3dnl with macros to something other than the name we are testing with.
4AC_DEFUN([AX_CHECK_FUNCS_COMP],[
5  dnl This is magic to make autoheader pick up the config.h.in templates
6  dnl automatically.  This uses macros which are probably not public
7  dnl (not documented anyway) but this works at least with Automake 2.59.
8  AC_FOREACH([AX_Func], [$1],
9    [AH_TEMPLATE(AS_TR_CPP(HAVE_[]AX_Func),
10                 [Define to 1 if you have the `]AX_Func[' function or macro.])])dnl
11  for ax_func in $1; do
12    ax_fname=`echo $ax_func | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g"`
13    ax_symbolname=`echo $ax_func | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g" | tr "@<:@a-z@:>@" "@<:@A-Z@:>@"`
14    AC_CACHE_CHECK([for $ax_func], ax_cv_func_${ax_fname}, [
15      AC_LINK_IFELSE(
16        [ AC_LANG_PROGRAM(
17            [$4
18void *foo = $ax_func;
19],
20            [  return foo != $ax_func; ])],
21	[ eval "ax_cv_func_${ax_fname}=\"yes\"" ],
22	[ eval "ax_cv_func_${ax_fname}=\"no\"" ])])
23    if eval "test \"\${ax_cv_func_${ax_fname}}\" = \"yes\""; then
24      AC_DEFINE_UNQUOTED(HAVE_${ax_symbolname}, 1,
25        [Define to 1 if you have the $ax_func() function.])
26      $2
27    else
28      true
29      $3
30    fi
31  done
32])dnl
33