renameat: new module

[gnulib.git] / m4 / renameat.m4

diff --git a/m4/renameat.m4 b/m4/renameat.m4
new file mode 100644 (file)
index 0000000..bda7660
--- /dev/null
+++ b/m4/renameat.m4
@@ -0,0 +1,23 @@
+# serial 1
+# See if we need to provide renameat replacement.
+
+dnl Copyright (C) 2009 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.
+
+# Written by Eric Blake.
+
+AC_DEFUN([gl_FUNC_RENAMEAT],
+[
+  AC_REQUIRE([gl_FUNC_OPENAT])
+  AC_REQUIRE([gl_FUNC_RENAME])
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_FUNCS_ONCE([renameat])
+  if test $ac_cv_func_renameat = no; then
+    HAVE_RENAMEAT=0
+    AC_LIBOBJ([renameat])
+    AC_LIBOBJ([at-func2])
+  fi
+])