From 5b85fbd95b68704e62590ca1c2dde5d815205f65 Mon Sep 17 00:00:00 2001
From: normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 16 Nov 2014 09:22:43 +0000
Subject: tool/update-deps: warning to disable ccache

I spent several minutes wondering why -save-temps=obj was
not taking effect, hopefully this saves somebody else the
trouble.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48459 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog        | 4 ++++
 tool/update-deps | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index a0de7166a9..59682c38d8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Nov 16 18:22:18 2014  Eric Wong  <e@80x24.org>
+
+	* tool/update-deps: warning to disable ccache
+
 Sun Nov 16 13:11:35 2014  Tanaka Akira  <akr@fsij.org>
 
 	* common.mk (CCAN_LIST_INCLUDES): Unused variable removed.
diff --git a/tool/update-deps b/tool/update-deps
index 8e27f8a510..c2caa54702 100755
--- a/tool/update-deps
+++ b/tool/update-deps
@@ -6,6 +6,9 @@
 #   gcc 4.5 (for -save-temps=obj option)
 #   GNU make (for -p option)
 #
+# Warning: ccache (and similar tools) must be disabled for
+# -save-temps=obj to work properly.
+#
 # Usage:
 #   1. Compile ruby with -save-temps=obj option.
 #      Ex.  ./configure debugflags='-save-temps=obj -g' && make all golf
@@ -29,6 +32,7 @@ ENV['LC_ALL'] = 'C'
 $opt_fix = false
 $opt_a = false
 $opt_actual_fix = false
+$i_not_found = false
 
 def optionparser
   op = OptionParser.new
@@ -141,6 +145,7 @@ def read_actual_deps(cwd)
     fn_i = fn_o.sub_ext('.i')
     if !fn_i.exist?
       warn "not found: #{fn_i}"
+      $i_not_found = true
       next
     end
     path_o = cwd + fn_o
@@ -402,3 +407,6 @@ def run
 end
 
 run
+if $i_not_found
+  warn "missing *.i files, see help in #$0 and ensure ccache is disabled"
+end
-- 
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