From c4dc6485eb3bd51fdc88eee03218b9755c373282 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 24 Jan 2018 10:34:53 -0500
Subject: XL: Enable use of response files for includes and objects

The IBM XL compiler supports response files via `-qoptfile=<file>`
instead of `@<file>`.
---
 Modules/Compiler/XL.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Modules/Compiler/XL.cmake b/Modules/Compiler/XL.cmake
index 4783785..e527a04 100644
--- a/Modules/Compiler/XL.cmake
+++ b/Modules/Compiler/XL.cmake
@@ -20,6 +20,8 @@ macro(__compiler_xl lang)
   # Feature flags.
   set(CMAKE_${lang}_VERBOSE_FLAG "-V")
   set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-qpic")
+  set(CMAKE_${lang}_RESPONSE_FILE_FLAG "-qoptfile=")
+  set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG "-qoptfile=")
 
   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
   string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O")
-- 
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