update debian/copyright

[gnulib.git] / m4 / rintl.m4

diff --git a/m4/rintl.m4 b/m4/rintl.m4
index df83341..bb88ee8 100644 (file)
--- a/m4/rintl.m4
+++ b/m4/rintl.m4
@@ -1,4 +1,4 @@
-# rintl.m4 serial 2
+# rintl.m4 serial 3
 dnl Copyright (C) 2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -7,13 +7,20 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_RINTL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
 
   dnl Determine RINTL_LIBM.
   gl_MATHFUNC([rintl], [long double], [(long double)])
   if test $gl_cv_func_rintl_no_libm = no \
      && test $gl_cv_func_rintl_in_libm = no; then
     HAVE_RINTL=0
-    RINTL_LIBM=
+    dnl Find libraries needed to link lib/rintl.c.
+    if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
+      AC_REQUIRE([gl_FUNC_RINT])
+      RINTL_LIBM="$RINT_LIBM"
+    else
+      RINTL_LIBM=
+    fi
   fi
   AC_SUBST([RINTL_LIBM])
 ])