From 61efa174d7f7bd21a7f260921977f2eabb1a78c5 Mon Sep 17 00:00:00 2001
From: Catherine Moore <Catherine_moore@mentor.com>
Date: Wed, 10 May 2017 15:34:25 +0000
Subject: [PATCH] [cmake] Disable building enable_execute_stack.c for baremetal
 targets.

Disable building enable_execute_stack.c for targets that do not have
support for mprotect().

Differential Revision: https://reviews.llvm.org/D33018

llvm-svn: 302680
---
 compiler-rt/CMakeLists.txt              | 3 +++
 compiler-rt/lib/builtins/CMakeLists.txt | 7 ++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/CMakeLists.txt b/compiler-rt/CMakeLists.txt
index 4247b40..b522c34 100644
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@@ -31,6 +31,9 @@ mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS)
 option(COMPILER_RT_BUILD_XRAY "Build xray" ON)
 mark_as_advanced(COMPILER_RT_BUILD_XRAY)
 
+set(COMPILER_RT_BAREMETAL_BUILD OFF CACHE BOOLEAN
+  "Build for a bare-metal target.")
+
 if (COMPILER_RT_STANDALONE_BUILD)
   load_llvm_config()
 
diff --git a/compiler-rt/lib/builtins/CMakeLists.txt b/compiler-rt/lib/builtins/CMakeLists.txt
index e3779ca..946b912 100644
--- a/compiler-rt/lib/builtins/CMakeLists.txt
+++ b/compiler-rt/lib/builtins/CMakeLists.txt
@@ -66,7 +66,6 @@ set(GENERIC_SOURCES
   divti3.c
   divtf3.c
   divxc3.c
-  enable_execute_stack.c
   eprintf.c
   extendsfdf2.c
   extendhfsf2.c
@@ -191,6 +190,12 @@ option(COMPILER_RT_EXCLUDE_ATOMIC_BUILTIN
   "Skip the atomic builtin (this may be needed if system headers are unavailable)"
   Off)
 
+if(NOT COMPILER_RT_BAREMETAL_BUILD)
+  set(GENERIC_SOURCES
+    ${GENERIC_SOURCES}
+    enable_execute_stack.c)
+endif()
+
 if(COMPILER_RT_HAS_ATOMIC_KEYWORD AND NOT COMPILER_RT_EXCLUDE_ATOMIC_BUILTIN)
   set(GENERIC_SOURCES
     ${GENERIC_SOURCES}
-- 
2.7.4