From 8ed663791bdda4e726f7b3764bc75f8856724d6f Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 25 Apr 2017 08:52:14 -0400
Subject: UseSWIG: Fall back to empty PREFIX for unknown languages

Teach `SWIG_ADD_LIBRARY` to fall back to an empty library prefix for
languages we don't explicitly define already.

Suggested-by: Alan W. Irwin <irwin@beluga.phys.uvic.ca>
---
 Modules/UseSWIG.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Modules/UseSWIG.cmake b/Modules/UseSWIG.cmake
index 277f4ca..bfe1a6f 100644
--- a/Modules/UseSWIG.cmake
+++ b/Modules/UseSWIG.cmake
@@ -326,6 +326,9 @@ macro(SWIG_ADD_LIBRARY name)
     if (APPLE)
       set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".bundle")
     endif ()
+  else()
+    # assume empty prefix because we expect the module to be dynamically loaded
+    set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES PREFIX "")
   endif ()
 endmacro()
 
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