46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
|
From 5da1f631bc753655ac94b08a6233eecd0d451327 Mon Sep 17 00:00:00 2001
|
||
|
|
From: "Arnout Vandecappelle (Essensium/Mind)" <arnout@mind.be>
|
||
|
|
Date: Fri, 26 Aug 2016 21:55:06 +0200
|
||
|
|
Subject: [PATCH] Fix LTO support for cross-compilation.
|
||
|
|
|
||
|
|
When cross-compiling, the ar and ranlib to be used for LTO are prefixed
|
||
|
|
by the cross-tuple. gcc-ar and gcc-ranlib may not exist. Cfr.
|
||
|
|
http://autobuild.buildroot.net/results/f3c/f3c48da3a9706cd366c0e0a96c3cd0ff959f2a78/
|
||
|
|
|
||
|
|
Therefore, search for an appropriate lto-ar and lto-ranlib before
|
||
|
|
enabling LTO.
|
||
|
|
|
||
|
|
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
|
||
|
|
---
|
||
|
|
Submitted upstream: https://github.com/tomba/kmsxx/pull/14
|
||
|
|
---
|
||
|
|
CMakeLists.txt | 12 +++++++++---
|
||
|
|
1 file changed, 9 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/CMakeLists.txt b/CMakeLists.txt
|
||
|
|
index e5b5ea5..c61c81d 100644
|
||
|
|
--- a/CMakeLists.txt
|
||
|
|
+++ b/CMakeLists.txt
|
||
|
|
@@ -39,9 +39,15 @@ if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG)
|
||
|
|
CHECK_CXX_COMPILER_FLAG("-flto" HAS_LTO_FLAG)
|
||
|
|
|
||
|
|
if (HAS_LTO_FLAG)
|
||
|
|
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
|
||
|
|
- set(CMAKE_AR gcc-ar)
|
||
|
|
- set(CMAKE_RANLIB gcc-ranlib)
|
||
|
|
+ find_program(LTO_AR NAMES "${CMAKE_C_COMPILER}-ar" gcc-ar)
|
||
|
|
+ find_program(LTO_RANLIB NAMES "${CMAKE_C_COMPILER}-ranlib" gcc-ranlib)
|
||
|
|
+ if (LTO_AR AND LTO_RANLIB)
|
||
|
|
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
|
||
|
|
+ set(CMAKE_AR "${LTO_AR}")
|
||
|
|
+ set(CMAKE_RANLIB "${LTO_RANLIB}")
|
||
|
|
+ else()
|
||
|
|
+ message(STATUS "gcc-ar or gcc-ranlib not found, disabling LTO")
|
||
|
|
+ endif()
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
--
|
||
|
|
2.9.3
|
||
|
|
|