From d281f68b0213ec6c410421c2dcc5aba2ebafbc30 Mon Sep 17 00:00:00 2001
From: Dmitry Arkhipov <grisumbras@yandex.ru>
Date: Wed, 11 Mar 2026 14:28:15 +0300
Subject: [PATCH] fix ambiguous target build system error

---
 build/Jamfile.v2 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/build/Jamfile.v2 b/build/Jamfile.v2
index b0874a3..2c7ad2c 100644
--- a/build/Jamfile.v2
+++ b/build/Jamfile.v2
@@ -35,7 +35,6 @@ if [ mpi.configured ]
 }
 else
 {
-  alias boost_graph_parallel ;
   if ! ( --without-graph_parallel in  [ modules.peek : ARGV ] )
   {
     message boost_graph_parallel
@@ -44,4 +43,8 @@ else
       : "note: to suppress this message, pass \"--without-graph_parallel\" to bjam."
       ;
   }
+  else
+  {
+    alias boost_graph_parallel ;
+  }
 }