X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fprintf-frexpl.m4;h=669cc260141403531a37eb3ab429f334bc980df2;hb=1b9bd2b9f83a84ede12622d6a040383b6bded37d;hp=6c74e9ba9282459dc6bab158a9e4b97e12a1f9c2;hpb=9f88c0b0e0cfa8a9c25f1db4f58b837c7b891575;p=gnulib.git

diff --git a/m4/printf-frexpl.m4 b/m4/printf-frexpl.m4
index 6c74e9ba9..669cc2601 100644
--- a/m4/printf-frexpl.m4
+++ b/m4/printf-frexpl.m4
@@ -1,4 +1,4 @@
-# printf-frexpl.m4 serial 4
+# printf-frexpl.m4 serial 5
 dnl Copyright (C) 2007 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,6 +9,7 @@ dnl Check how to define printf_frexpl() without linking with libm.
 AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  dnl Subset of gl_FUNC_FREXPL_NO_LIBM.
   AC_CACHE_CHECK([whether frexpl can be used without linking with libm],
     [gl_cv_func_frexpl_no_libm],
     [
@@ -20,6 +21,17 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
         [gl_cv_func_frexpl_no_libm=no])
     ])
   if test $gl_cv_func_frexpl_no_libm = yes; then
+    gl_FUNC_FREXPL_WORKS
+    case "$gl_cv_func_frexpl_works" in
+      *yes) gl_func_frexpl_no_libm=yes ;;
+      *)    gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;;
+    esac
+  else
+    gl_func_frexpl_no_libm=no
+    dnl Set REPLACE_FREXPL here because the system may have frexpl in libm.
+    REPLACE_FREXPL=1
+  fi
+  if test $gl_func_frexpl_no_libm = yes; then
     AC_DEFINE([HAVE_FREXPL_IN_LIBC], 1,
       [Define if the frexpl function is available in libc.])
     dnl Also check whether it's declared.