Changes to m4/bootstrap,v [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/09/21 13:07:02

Index: bootstrap
===================================================================
RCS file: /sources/m4/m4/bootstrap,v
retrieving revision 1.31.2.3
retrieving revision 1.31.2.4
diff -u -b -r1.31.2.3 -r1.31.2.4
--- bootstrap   15 Jul 2006 21:32:50 -0000      1.31.2.3
+++ bootstrap   21 Sep 2006 13:07:02 -0000      1.31.2.4
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# bootstrap (GNU M4) version 2006-07-15
+# bootstrap (GNU M4) version 2006-09-21
 # Written by Gary V. Vaughan  <address@hidden>
 
 # Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
@@ -25,6 +25,7 @@
 
 # Usage: $progname [options]
 
+# -f      --force            bootstrap even when sources are not from CVS
 # -v      --version          print version information
 # -h,-?   --help             print short or long help message
 
@@ -58,6 +59,9 @@
 progname=`echo "$progpath" | $SED "$basename"`
 PROGRAM=bootstrap
 
+# Detect whether this is a CVS checkout or a tarball
+CVS_only_file=HACKING
+
 # func_echo arg...
 # Echo program name prefixed message.
 func_echo ()
@@ -180,6 +184,7 @@
     shift
     case $opt in
       # Separate optargs to short options:
+      -f|--force)      CVS_only_file=                                  ;;
       -\?|-h)          func_usage                                      ;;
       --help)          func_help                                       ;;
       --version)       func_version                                    ;;
@@ -191,6 +196,10 @@
 
   # Bail if the options were screwed
   $exit_cmd $EXIT_FAILURE
+
+  if test -n "$CVS_only_file" && test ! -r "$CVS_only_file"; then
+    func_fatal_error "Bootstrapping from a non-CVS distribution is risky."
+  fi
 }
 
 ## ---------------------------- ##