X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fatanl.m4;h=52914f6ec1ae0a9631e1dc26e288f291859caf49;hb=0f247f994ecf88c40563c2d264536a1aa7634b33;hp=28cf7b3a81f4112e5059800235f4d95cdae7d49c;hpb=b4349b948ba2c352187158e241334abda6e473e9;p=gnulib.git

diff --git a/m4/atanl.m4 b/m4/atanl.m4
index 28cf7b3a8..52914f6ec 100644
--- a/m4/atanl.m4
+++ b/m4/atanl.m4
@@ -1,5 +1,5 @@
-# atanl.m4 serial 2
-dnl Copyright (C) 2010 Free Software Foundation, Inc.
+# atanl.m4 serial 4
+dnl Copyright (C) 2010-2011 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.
@@ -14,12 +14,14 @@ AC_DEFUN([gl_FUNC_ATANL],
   AC_CACHE_CHECK([whether atanl() can be used without linking with libm],
     [gl_cv_func_atanl_no_libm],
     [
-      AC_TRY_LINK([#ifndef __NO_MATH_INLINES
-                   # define __NO_MATH_INLINES 1 /* for glibc */
-                   #endif
-                   #include <math.h>
-                   long double x;],
-                  [return atanl (x) > 1;],
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#ifndef __NO_MATH_INLINES
+             # define __NO_MATH_INLINES 1 /* for glibc */
+             #endif
+             #include <math.h>
+             long double x;]],
+           [[return atanl (x) > 1;]])],
         [gl_cv_func_atanl_no_libm=yes],
         [gl_cv_func_atanl_no_libm=no])
     ])
@@ -29,12 +31,14 @@ AC_DEFUN([gl_FUNC_ATANL],
       [
         save_LIBS="$LIBS"
         LIBS="$LIBS -lm"
-        AC_TRY_LINK([#ifndef __NO_MATH_INLINES
-                     # define __NO_MATH_INLINES 1 /* for glibc */
-                     #endif
-                     #include <math.h>
-                     long double x;],
-                    [return atanl (x) > 1;],
+        AC_LINK_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[#ifndef __NO_MATH_INLINES
+               # define __NO_MATH_INLINES 1 /* for glibc */
+               #endif
+               #include <math.h>
+               long double x;]],
+             [[return atanl (x) > 1;]])],
           [gl_cv_func_atanl_in_libm=yes],
           [gl_cv_func_atanl_in_libm=no])
         LIBS="$save_LIBS"
@@ -51,7 +55,7 @@ AC_DEFUN([gl_FUNC_ATANL],
   else
     HAVE_DECL_ATANL=0
     HAVE_ATANL=0
-    AC_LIBOBJ([atanl])
+    dnl Find libraries needed to link lib/atanl.c.
     AC_REQUIRE([gl_FUNC_ISNANL])
     dnl Append $ISNANL_LIBM to ATANL_LIBM, avoiding gratuitous duplicates.
     case " $ATANL_LIBM " in