From dd7e31bc15471b5c3ea31fcbe2002650780e78b6 Mon Sep 17 00:00:00 2001
From: Tuukka Pasanen <pasanen.tuukka@gmail.com>
Date: Wed, 15 Apr 2015 11:37:48 -0400
Subject: UseSWIG: Fix module name detection with relative source file (#15508)

When SWIG_GET_EXTRA_OUTPUT_FILES checks to see if a source file exists
for use in reading the module name, it must pass an absolute path to
the if(EXISTS) command.  Teach SWIG_ADD_SOURCE_TO_MODULE to give it
the absolute path it already knows.
---
 Modules/UseSWIG.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/UseSWIG.cmake b/Modules/UseSWIG.cmake
index 7423418..1862876 100644
--- a/Modules/UseSWIG.cmake
+++ b/Modules/UseSWIG.cmake
@@ -156,7 +156,7 @@ macro(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
   SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
     swig_extra_generated_files
     "${swig_outdir}"
-    "${infile}")
+    "${swig_source_file_fullname}")
   set(swig_generated_file_fullname
     "${swig_outdir}/${swig_source_file_name_we}")
   # add the language into the name of the file (i.e. TCL_wrap)
-- 
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