From 04f442f755fbfb317f6790e36686e05c4c906ba0 Mon Sep 17 00:00:00 2001
From: Chuck Atkins <chuck.atkins@kitware.com>
Date: Tue, 4 Nov 2014 11:01:56 -0500
Subject: Workaround for short jump tables on PA-RISC.

The PA-RISC architecture requires special options for GCC to prevent
linker errors when libraries reach a certain size and / or complexity.
See http://mraw.org/blog/2007/10/10/Linking_on_hppa and gcc
documentation on -mlong-calls.
---
 CompileFlags.cmake | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

(limited to 'CompileFlags.cmake')

diff --git a/CompileFlags.cmake b/CompileFlags.cmake
index a4a4a78c98..7e9fb16c8c 100644
--- a/CompileFlags.cmake
+++ b/CompileFlags.cmake
@@ -65,6 +65,16 @@ if(CMAKE_SYSTEM_NAME MATCHES "HP-UX" AND CMAKE_CXX_COMPILER_ID MATCHES "HP")
   endif()
 endif()
 
+# Workaround for short jump tables on PA-RISC
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^parisc")
+  if(CMAKE_COMPILER_IS_GNUC)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mlong-calls")
+  endif()
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mlong-calls")
+  endif()
+endif()
+
 # use the ansi CXX compile flag for building cmake
 if (CMAKE_ANSI_CXXFLAGS)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_ANSI_CXXFLAGS}")
@@ -74,10 +84,4 @@ if (CMAKE_ANSI_CFLAGS)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_ANSI_CFLAGS}")
 endif ()
 
-# avoid binutils problem with large binaries, e.g. when building CMake in debug mode
-# See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50230
-if (CMAKE_SYSTEM_NAME STREQUAL Linux AND CMAKE_SYSTEM_PROCESSOR STREQUAL parisc)
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--unique=.text._*")
-endif ()
-
 include (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityCXX.cmake)
-- 
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