coreutils-6.9coreutils-6.9

1 files changed, 35 insertions, 0 deletions

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
new file mode 100644
index 0000000..687f900
--- /dev/null
+++ b/m4/unlink-busy.m4
@@ -0,0 +1,35 @@
+#serial 11
+
+dnl From J. David Anglin.
+
+dnl HPUX and other systems can't unlink shared text that is being executed.
+
+# Copyright (C) 2000, 2001, 2004, 2007 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
+[dnl
+  AC_CACHE_CHECK([whether a running program can be unlinked],
+    jm_cv_func_unlink_busy_text,
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE(
+           [AC_INCLUDES_DEFAULT[
+	    int
+	    main (int argc, char **argv)
+	    {
+	      return !argc || unlink (argv[0]) != 0;
+	    }]])],
+      jm_cv_func_unlink_busy_text=yes,
+      jm_cv_func_unlink_busy_text=no,
+      jm_cv_func_unlink_busy_text=no
+      )
+    ]
+  )
+
+  if test $jm_cv_func_unlink_busy_text = no; then
+    INSTALL=$ac_install_sh
+  fi
+])