git.m6w6.name Git - m6w6/ext-psi/blob - config.ax_check_sign.m4

   1 AC_DEFUN([AX_CHECK_SIGN], [
   2         typename=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g"`
   3         AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [
   4                         AC_TRY_COMPILE([$4],
   5                                         [ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ],
   6                                         [ eval "ax_cv_decl_${typename}_signed=\"yes\"" ],
   7                                         [ eval "ax_cv_decl_${typename}_signed=\"no\"" ])])
   8         symbolname=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g" | tr "a-z" "A-Z"`
   9         if eval "test \"\${ax_cv_decl_${typename}_signed}\" = \"yes\""; then
  10                         $2
  11         elif eval "test \"\${ax_cv_decl_${typename}_signed}\" = \"no\""; then
  12                         $3
  13         fi
  14 ])