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Member "libextractor-1.11/m4/longdouble.m4" (20 Jun 2018, 1215 Bytes) of package /linux/privat/libextractor-1.11.tar.gz:


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    1 # longdouble.m4 serial 2 (gettext-0.15)
    2 dnl Copyright (C) 2002-2003, 2006 Free Software Foundation, Inc.
    3 dnl This file is free software; the Free Software Foundation
    4 dnl gives unlimited permission to copy and/or distribute it,
    5 dnl with or without modifications, as long as this notice is preserved.
    6 
    7 dnl From Bruno Haible.
    8 dnl Test whether the compiler supports the 'long double' type.
    9 dnl Prerequisite: AC_PROG_CC
   10 
   11 dnl This file is only needed in autoconf <= 2.59.  Newer versions of autoconf
   12 dnl have a macro AC_TYPE_LONG_DOUBLE with identical semantics.
   13 
   14 AC_DEFUN([gt_TYPE_LONGDOUBLE],
   15 [
   16   AC_CACHE_CHECK([for long double], gt_cv_c_long_double,
   17     [if test "$GCC" = yes; then
   18        gt_cv_c_long_double=yes
   19      else
   20        AC_TRY_COMPILE([
   21          /* The Stardent Vistra knows sizeof(long double), but does not support it.  */
   22          long double foo = 0.0;
   23          /* On Ultrix 4.3 cc, long double is 4 and double is 8.  */
   24          int array [2*(sizeof(long double) >= sizeof(double)) - 1];
   25          ], ,
   26          gt_cv_c_long_double=yes, gt_cv_c_long_double=no)
   27      fi])
   28   if test $gt_cv_c_long_double = yes; then
   29     AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the 'long double' type.])
   30   fi
   31 ])