From 8cdf8dec703d882b46ca50a769fabb95ffc48e2c Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Thu, 24 Nov 2016 21:27:41 +0100
Subject: sync with upstream

---
 project/cmake/modules/LDGOLD.cmake | 45 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 project/cmake/modules/LDGOLD.cmake

(limited to 'project/cmake/modules/LDGOLD.cmake')

diff --git a/project/cmake/modules/LDGOLD.cmake b/project/cmake/modules/LDGOLD.cmake
new file mode 100644
index 0000000..ad19c6b
--- /dev/null
+++ b/project/cmake/modules/LDGOLD.cmake
@@ -0,0 +1,45 @@
+option(ENABLE_LDGOLD "Use GNU gold linker" ON)
+
+set(LDGOLD_FOUND FALSE)
+if(ENABLE_LDGOLD)
+  execute_process(COMMAND ${CMAKE_C_COMPILER} -fuse-ld=gold -Wl,--version ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
+  if(LD_VERSION MATCHES "GNU gold")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold")
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold")
+    set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold")
+    set(LDGOLD_FOUND TRUE)
+    message(STATUS "Linker: GNU gold")
+  else()
+    message(WARNING "GNU gold linker is not available, falling back to default system linker")
+  endif()
+else()
+  message(STATUS "Linker: Default system linker")
+endif()
+
+set(DEFAULT_ENABLE_DEBUGFISSION FALSE)
+if(CMAKE_BUILD_TYPE STREQUAL Debug OR
+   CMAKE_BUILD_TYPE STREQUAL RelWithDebInfo AND
+   LDGOLD_FOUND)
+  set(DEFAULT_ENABLE_DEBUGFISSION TRUE)
+endif()
+
+include(CMakeDependentOption)
+cmake_dependent_option(ENABLE_DEBUGFISSION "Enable Debug Fission support" ON
+                       "DEFAULT_ENABLE_DEBUGFISSION" OFF)
+
+set(DEBUGFISSION_FOUND FALSE)
+if(ENABLE_DEBUGFISSION)
+  include(TestCXXAcceptsFlag)
+  check_cxx_accepts_flag(-gsplit-dwarf CXX_ACCEPTS_GSPLIT_DWARF)
+  if(CXX_ACCEPTS_GSPLIT_DWARF)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -gsplit-dwarf")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -gsplit-dwarf")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
+    set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
+    set(DEBUGFISSION_FOUND TRUE)
+    message(STATUS "Debug Fission enabled")
+  else()
+    message(WARNING "Debug Fission is not available")
+  endif()
+endif()
-- 
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