From: Chris Bieneman <beanz@apple.com>
Date: Thu, 10 Sep 2015 18:22:33 +0000 (+0000)
Subject: [CMake] Add lto subdirectory explicitly.
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=24346ed19fa1f2d699578307b52b1595b0888834;hp=ba662b351c937958f586dac232394bd8393f3998

[CMake] Add lto subdirectory explicitly.

This is required because ExternalProject_Add requires all targets specified in the DEPENDS argument must exist before calling ExternalProject_Add.

I have a follow-up patch to clang that enables using the just-built libLTO in bootstrap builds, so we need to be able to add the LTO target as a dependency in clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247316 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 203169350c5..aca4350fcb2 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -30,6 +30,10 @@ if(CYGWIN OR NOT LLVM_ENABLE_PIC)
   set(LLVM_TOOL_LLVM_LTO_BUILD Off)
 endif()
 
+# Add LTO before clang, ExternalProject requires targets specified in DEPENDS
+# to exist before the call to ExternalProject_Add
+add_llvm_tool_subdirectory(lto)
+
 # Projects supported via LLVM_EXTERNAL_*_SOURCE_DIR need to be explicitly
 # specified.
 add_llvm_external_project(clang)