linkat: Work around AIX 7.1 bug.

[gnulib.git] / m4 / lseek.m4

diff --git a/m4/lseek.m4 b/m4/lseek.m4
index 4877bfd..9bf4dc2 100644 (file)
--- a/m4/lseek.m4
+++ b/m4/lseek.m4
@@ -1,5 +1,5 @@
-# lseek.m4 serial 2
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# lseek.m4 serial 5
+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,
 dnl with or without modifications, as long as this notice is preserved.
@@ -21,16 +21,17 @@ int main ()
 }],
          [if test -s conftest$ac_exeext \
              && ./conftest$ac_exeext < conftest.$ac_ext \
-             && { echo hi | ./conftest$ac_exeext; test $? = 1; }; then
+             && test 1 = "`echo hi \
+               | { ./conftest$ac_exeext; echo $?; cat >/dev/null; }`"; then
             gl_cv_func_lseek_pipe=yes
           else
             gl_cv_func_lseek_pipe=no
           fi],
          [gl_cv_func_lseek_pipe=no])
      else
-       AC_LINK_IFELSE([
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-/* mingw mistakenly returns 0 when trying to seek on pipes.  */
+       AC_COMPILE_IFELSE([
+#if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) || defined __BEOS__
+/* mingw and BeOS mistakenly return 0 when trying to seek on pipes.  */
   Choke me.
 #endif],
          [gl_cv_func_lseek_pipe=yes], [gl_cv_func_lseek_pipe=no])
@@ -46,5 +47,5 @@ AC_DEFUN([gl_REPLACE_LSEEK],
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
   REPLACE_LSEEK=1
   AC_DEFINE([LSEEK_PIPE_BROKEN], [1],
-           [Define to 1 if lseek does not detect pipes.])
+            [Define to 1 if lseek does not detect pipes.])
 ])