X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Ffloorf.m4;h=aa76f8cae20e323285e2e8862e41834db5f7678e;hb=41a7841a82351f9df3e13b6199a134004d694131;hp=36ffc940517bacbebe11aa8135f8613f430d294a;hpb=1d7de2b4c343cfb0eb4d1171acf0877630e32151;p=gnulib.git

diff --git a/m4/floorf.m4 b/m4/floorf.m4
index 36ffc9405..aa76f8cae 100644
--- a/m4/floorf.m4
+++ b/m4/floorf.m4
@@ -1,5 +1,5 @@
-# floorf.m4 serial 8
-dnl Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
+# floorf.m4 serial 10
+dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -35,10 +35,12 @@ AC_DEFUN([gl_FUNC_FLOORF],
 #include <math.h>
 ]gl_FLOAT_MINUS_ZERO_CODE[
 ]gl_FLOAT_SIGNBIT_CODE[
-int main()
+static float dummy (float f) { return 0; }
+int main (int argc, char *argv[])
 {
+  float (*my_floorf) (float) = argc ? floorf : dummy;
   /* Test whether floorf (-0.0f) is -0.0f.  */
-  if (signbitf (minus_zerof) && !signbitf (floorf (minus_zerof)))
+  if (signbitf (minus_zerof) && !signbitf (my_floorf (minus_zerof)))
     return 1;
   return 0;
 }
@@ -58,7 +60,7 @@ int main()
     HAVE_DECL_FLOORF=0
   fi
   if test $HAVE_DECL_FLOORF = 0 || test $REPLACE_FLOORF = 1; then
-    AC_LIBOBJ([floorf])
+    dnl No libraries are needed to link lib/floorf.c.
     FLOORF_LIBM=
   fi
   AC_SUBST([FLOORF_LIBM])