From 08a862685dc81ddfb5c77dcf36b0e219d98ca4b8 Mon Sep 17 00:00:00 2001
From: Francis Ricci <francisjricci@gmail.com>
Date: Thu, 25 Aug 2016 16:15:45 +0000
Subject: [builtins] Make sure builtin compile tests respect
 CMAKE_C_COMPILER_TARGET

Summary:
Since we generate the compiler invocation on our own, we need to
manually add -target if CMAKE_C_COMPILER_TARGET has been specified.

Reviewers: compnerd, beanz

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23823

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@279747 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/Modules/BuiltinTests.cmake | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cmake/Modules/BuiltinTests.cmake b/cmake/Modules/BuiltinTests.cmake
index 6bbf44951..5f3cc7e58 100644
--- a/cmake/Modules/BuiltinTests.cmake
+++ b/cmake/Modules/BuiltinTests.cmake
@@ -11,7 +11,13 @@ function(try_compile_only output)
   file(WRITE ${SIMPLE_C} "${ARG_SOURCE}\n")
   string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
          ${CMAKE_C_COMPILE_OBJECT})
-  string(REPLACE ";" " " extra_flags "${ARG_FLAGS}")
+
+  set(TRY_COMPILE_FLAGS "${ARG_FLAGS}")
+  if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
+    list(APPEND TRY_COMPILE_FLAGS "-target ${CMAKE_C_COMPILER_TARGET}")
+  endif()
+
+  string(REPLACE ";" " " extra_flags "${TRY_COMPILE_FLAGS}")
 
   set(test_compile_command "${CMAKE_C_COMPILE_OBJECT}")
   foreach(substitution ${substitutions})
-- 
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