From 0b95ca508ed4d664721f41dccda6b49e87941d00 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 11 Feb 2020 20:17:01 +0300
Subject: Use copyright extracted from COPYRIGHT file for printing build2
 version

---
 build2/b.cxx     | 10 +++++++---
 build2/buildfile |  8 ++++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/build2/b.cxx b/build2/b.cxx
index 2917ad1..eafa1dc 100644
--- a/build2/b.cxx
+++ b/build2/b.cxx
@@ -442,9 +442,13 @@ main (int argc, char* argv[])
     {
       cout << "build2 " << LIBBUILD2_VERSION_ID << endl
            << "libbutl " << LIBBUTL_VERSION_ID << endl
-           << "host " << BUILD2_HOST_TRIPLET << endl
-           << "Copyright (c) 2014-2019 Code Synthesis Ltd" << endl
-           << "This is free software released under the MIT license." << endl;
+           << "host " << BUILD2_HOST_TRIPLET << endl;
+
+#ifndef BUILD2_BOOTSTRAP
+      cout << "Copyright (c) " << BUILD2_COPYRIGHT << "." << endl;
+#endif
+
+      cout << "This is free software released under the MIT license." << endl;
       return 0;
     }
 
diff --git a/build2/buildfile b/build2/buildfile
index da32525..bfd68cb 100644
--- a/build2/buildfile
+++ b/build2/buildfile
@@ -20,6 +20,14 @@ exe{b}: {hxx ixx txx cxx}{** -b-options} {hxx ixx cxx}{b-options} $libs
 #
 obj{b}: cxx.poptions += -DBUILD2_HOST_TRIPLET=\"$cxx.target\"
 
+# Pass the copyright notice extracted from the COPYRIGHT file.
+#
+copyright = $process.run_regex(cat $src_root/COPYRIGHT,  \
+                               'Copyright \(c\) (.+)\.', \
+                               '\1')
+
+obj{b}: cxx.poptions += -DBUILD2_COPYRIGHT=\"$copyright\"
+
 switch $cxx.target.class
 {
   case 'linux'
-- 
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