--- a/scripts/common.php
+++ b/scripts/common.php
@@ -63,12 +63,20 @@ function check_compiler()
 			}
 		}
 	}
+	if (getenv("CXXFLAGS"))
+	{
+		$compiler .= " ".getenv("CXXFLAGS");
+	}
 }
 
 function get_link_flags()
 {
 	global $is_windows_target;
-	$flags = " -L".__DIR__."/../src/vendor/Soup -lsoup";
+	$srcdir = __DIR__."/../src";
+	$flags .= " -L$srcdir/vendor/Soup -L$srcdir -lsoup";
+	if (getenv("LDFLAGS")) {
+		$flags .= " ".getenv("LDFLAGS");
+	}
 	if ($is_windows_target)
 	{
 		$flags .= " -lws2_32 -lbcrypt";