--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2010-08-26  Eric Blake  <eblake@redhat.com>
 
+	lseek: fix link test
+	* m4/lseek.m4 (gl_FUNC_LSEEK): Use correct format for
+	AC_LINK_IFELSE.
+
 	include_next: silence autoconf 2.68 warning
 	* m4/include_next.m4 (gl_INCLUDE_NEXT): Mark this use of
 	AC_COMPILE_IFELSE as special.

--- a/m4/lseek.m4
+++ b/m4/lseek.m4
@@ -1,4 +1,4 @@
-# lseek.m4 serial 5
+# lseek.m4 serial 6
 dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,15 +10,13 @@
   AC_REQUIRE([AC_PROG_CC])
   AC_CACHE_CHECK([whether lseek detects pipes], [gl_cv_func_lseek_pipe],
     [if test $cross_compiling = no; then
-       AC_LINK_IFELSE([
+       AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <sys/types.h> /* for off_t */
 #include <stdio.h> /* for SEEK_CUR */
-#include <unistd.h>
-int main ()
-{
+#include <unistd.h>]], [[
   /* Exit with success only if stdin is seekable.  */
   return lseek (0, (off_t)0, SEEK_CUR) < 0;
-}],
+]])],
          [if test -s conftest$ac_exeext \
              && ./conftest$ac_exeext < conftest.$ac_ext \
              && test 1 = "`echo hi \
@@ -29,11 +27,11 @@
           fi],
          [gl_cv_func_lseek_pipe=no])
      else
-       AC_COMPILE_IFELSE([
+       AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) || defined __BEOS__
 /* mingw and BeOS mistakenly return 0 when trying to seek on pipes.  */
   Choke me.
-#endif],
+#endif]])],
          [gl_cv_func_lseek_pipe=yes], [gl_cv_func_lseek_pipe=no])
      fi])
   if test $gl_cv_func_lseek_pipe = no; then