X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=m4%2Freadlinkat.m4;fp=m4%2Freadlinkat.m4;h=a3897498aefa646d2f5191eea476dd609eaf777d;hp=0000000000000000000000000000000000000000;hb=b414e25de8ca49d7567a92c203d431383ec57c83;hpb=29ece34f44a27750bbfd76154ad9882580453dc7

diff --git a/m4/readlinkat.m4 b/m4/readlinkat.m4
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+# serial 1
+# See if we need to provide readlinkat replacement.
+
+dnl Copyright (C) 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.
+
+# Written by Eric Blake.
+
+AC_DEFUN([gl_FUNC_READLINKAT],
+[
+  AC_REQUIRE([gl_FUNC_OPENAT])
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_FUNCS_ONCE([readlinkat])
+  if test $ac_cv_func_readlinkat = no; then
+    HAVE_READLINKAT=0
+    AC_LIBOBJ([readlinkat])
+  fi
+])