From 5c58a7e4d2eca9aa93518cc567e874fedcdf2a80 Mon Sep 17 00:00:00 2001
From: Chuck Atkins <chuck.atkins@kitware.com>
Date: Wed, 27 Feb 2019 11:31:57 -0600
Subject: ppc64: Work around TOC overflow with platform specific linker flags

---
 CompileFlags.cmake | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/CompileFlags.cmake b/CompileFlags.cmake
index 5d0e144..c8a039a 100644
--- a/CompileFlags.cmake
+++ b/CompileFlags.cmake
@@ -44,6 +44,15 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^parisc")
   endif()
 endif()
 
+# Workaround for TOC Overflow on ppc64
+if(CMAKE_SYSTEM_NAME STREQUAL "AIX" AND
+   CMAKE_SYSTEM_PROCESSOR MATCHES "powerpc")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-bbigtoc")
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux" AND
+   CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-multi-toc")
+endif()
+
 if (CMAKE_CXX_COMPILER_ID STREQUAL SunPro AND
     NOT DEFINED CMAKE_CXX${CMAKE_CXX_STANDARD}_STANDARD_COMPILE_OPTION)
   if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
-- 
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