[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.

llvm-svn: 247316
This commit is contained in:
Chris Bieneman 2015-09-10 18:22:33 +00:00
parent 8a772cfd61
commit 7ad7ae1fac
1 changed files with 4 additions and 0 deletions

View File

@ -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)