From 22278dfe43f8d3a492d643671b8926b77582a583 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 24 Jan 2017 16:16:48 +0300
Subject: Add default constructors to *_rule classes to make older clang happy

---
 build2/bin/rule     | 4 ++++
 build2/cli/rule     | 2 ++
 build2/dist/rule    | 2 ++
 build2/install/rule | 4 ++++
 build2/rule         | 8 ++++++++
 5 files changed, 20 insertions(+)

diff --git a/build2/bin/rule b/build2/bin/rule
index f733e5a..5031be1 100644
--- a/build2/bin/rule
+++ b/build2/bin/rule
@@ -17,6 +17,8 @@ namespace build2
     class obj_rule: public rule
     {
     public:
+      obj_rule () {}
+
       virtual match_result
       match (action, target&, const string& hint) const override;
 
@@ -27,6 +29,8 @@ namespace build2
     class lib_rule: public rule
     {
     public:
+      lib_rule () {}
+
       virtual match_result
       match (action, target&, const string& hint) const override;
 
diff --git a/build2/cli/rule b/build2/cli/rule
index 6cbbb9b..a46163b 100644
--- a/build2/cli/rule
+++ b/build2/cli/rule
@@ -17,6 +17,8 @@ namespace build2
     class compile: public rule
     {
     public:
+      compile () {}
+
       virtual match_result
       match (action, target&, const string& hint) const override;
 
diff --git a/build2/dist/rule b/build2/dist/rule
index 4953394..db8e731 100644
--- a/build2/dist/rule
+++ b/build2/dist/rule
@@ -19,6 +19,8 @@ namespace build2
     class rule: public build2::rule
     {
     public:
+      rule () {}
+
       virtual match_result
       match (action, target&, const string&) const override;
 
diff --git a/build2/install/rule b/build2/install/rule
index 1345dbd..aad5ee4 100644
--- a/build2/install/rule
+++ b/build2/install/rule
@@ -19,6 +19,8 @@ namespace build2
     class alias_rule: public rule
     {
     public:
+      alias_rule () {}
+
       virtual match_result
       match (action, target&, const string&) const override;
 
@@ -31,6 +33,8 @@ namespace build2
     class file_rule: public rule
     {
     public:
+      file_rule () {}
+
       virtual match_result
       match (action, target&, const string&) const override;
 
diff --git a/build2/rule b/build2/rule
index fbf3dcc..d01df6b 100644
--- a/build2/rule
+++ b/build2/rule
@@ -48,6 +48,8 @@ namespace build2
   class file_rule: public rule
   {
   public:
+    file_rule () {}
+
     virtual match_result
     match (action, target&, const string& hint) const override;
 
@@ -60,6 +62,8 @@ namespace build2
   class alias_rule: public rule
   {
   public:
+    alias_rule () {}
+
     virtual match_result
     match (action, target&, const string& hint) const override;
 
@@ -72,6 +76,8 @@ namespace build2
   class fsdir_rule: public rule
   {
   public:
+    fsdir_rule () {}
+
     virtual match_result
     match (action, target&, const string& hint) const override;
 
@@ -92,6 +98,8 @@ namespace build2
   class fallback_rule: public build2::rule
   {
   public:
+    fallback_rule () {}
+
     virtual match_result
     match (action, target&, const string&) const override {return true;}
 
-- 
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