Don't require -lm everywhere

diff --git a/m4/AM_FUNC_STRTOD.m4 b/m4/AM_FUNC_STRTOD.m4
index cb6e088..d9e0085 100644 (file)
--- a/m4/AM_FUNC_STRTOD.m4
+++ b/m4/AM_FUNC_STRTOD.m4
@@ -1,14 +1,31 @@
-dnl From Jim Meyering.
+## Copyright (C) 1996 Free Software Foundation, Inc.
 
-# serial 1
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
 
-# @defmac AC_FUNC_STRTOD
-# @maindex FUNC_STRTOD
-# @ovindex LIBOBJS
-# If the @code{strtod} function is not available, or does not work
-# correctly (like the one on SunOS 5.4), add @samp{strtod.o} to output
-# variable @code{LIBOBJS}.
-# @end defmac
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+## 02111-1307, USA.
+
+## From Jim Meyering.
+
+## serial 1
+
+## @defmac AC_FUNC_STRTOD
+## @maindex FUNC_STRTOD
+## @ovindex LIBOBJS
+## If the @code{strtod} function is not available, or does not work
+## correctly (like the one on SunOS 5.4), add @samp{strtod.o} to output
+## variable @code{LIBOBJS}.
+## @end defmac
 
 AC_DEFUN(AM_FUNC_STRTOD,
 [AC_CACHE_CHECK(for working strtod, am_cv_func_strtod,
@@ -41,10 +58,12 @@ main()
 ], am_cv_func_strtod=yes, am_cv_func_strtod=no, am_cv_func_strtod=no)])
 test $am_cv_func_strtod = no && LIBOBJS="$LIBOBJS strtod.o"
 AC_SUBST(LIBOBJS)dnl
+am_cv_func_strtod_needs_libm=no
 if test $am_cv_func_strtod = no; then
   AC_CHECK_FUNCS(pow)
   if test $am_cv_func_pow = no; then
-    AC_CHECK_LIB(m, pow)
+    AC_CHECK_LIB(m, pow, [am_cv_func_strtod_needs_libm=yes],
+                [AC_MSG_WARN(can't find library containing definition of pow)])
   fi
 fi
 ])