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Differential D12817

[CMake] Add cache scripts for Apple-style clang builds.
ClosedPublic

Authored by beanz on Sep 11 2015, 1:51 PM.

Details

Reviewers
chandlerc
echristo
Commits
rGea7ecde87cd7: [CMake] Add cache scripts for Apple-style clang builds.
rC247726: [CMake] Add cache scripts for Apple-style clang builds.
rL247726: [CMake] Add cache scripts for Apple-style clang builds.
Summary

These CMake cache scripts are my first pass at replicating Apple's packaging logic from autoconf. They can be used on any Darwin machine to approximate an Apple Clang build.

The included README file includes documentation and a sample CMake invocation.

Diff Detail

Event Timeline

beanz updated this revision to Diff 34586.Sep 11 2015, 1:51 PM
beanz retitled this revision from to [CMake] Add cache scripts for Apple-style clang builds..
beanz updated this object.
beanz added reviewers: chandlerc, echristo.
beanz added a subscriber: cfe-commits.
echristo accepted this revision.Sep 15 2015, 11:25 AM
echristo edited edge metadata.

Interesting. I'm down with putting this in - would it make more sense to put this alongside the buildit bits in the llvm/utils repo?

-eric

This revision is now accepted and ready to land.Sep 15 2015, 11:25 AM
beanz added a comment.Sep 15 2015, 11:31 AM

I had considered putting it in the LLVM repo, but this stuff actually works on standalone clang builds too, so I felt it might be better here.

-Chris

echristo added a comment.Sep 15 2015, 1:02 PM

Standalone as "clang that only sorta depends on llvm"?

beanz added a comment.Sep 15 2015, 1:04 PM

Standalone as in using the base system's LLVM installation. So you don't actually have to have an llvm checkout.

There's goop in the root clang CMakeLists file to support building clang as the top-level CMake tool, and all this stuff should work in that context as well.

-Chris

echristo added a subscriber: echristo.Sep 15 2015, 1:06 PM

Ah sure. Make it so then.

Closed by commit rL247726: [CMake] Add cache scripts for Apple-style clang builds. (authored by cbieneman). · Explain WhySep 15 2015, 2:54 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents

PathSize
cmake/
caches/
32 lines
29 lines
18 lines

Diff 34586

cmake/caches/Apple-stage1.cmake

  • This file was added.
# This file sets up a CMakeCache for Apple-style bootstrap builds. It can be
# used on any Darwin system to approximate Apple Clang builds.
if($ENV{DT_TOOLCHAIN_DIR})
set(CMAKE_INSTALL_PREFIX $ENV{DT_TOOLCHAIN_DIR}/usr/)
else()
set(CMAKE_INSTALL_PREFIX /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.toolchain/usr/)
endif()
set(LLVM_TARGETS_TO_BUILD X86 CACHE STRING "")
set(CLANG_VENDOR Apple CACHE STRING "")
set(LLVM_INCLUDE_TESTS OFF CACHE BOOL "")
set(LLVM_INCLUDE_EXAMPLES OFF CACHE BOOL "")
set(LLVM_INCLUDE_UTILS OFF CACHE BOOL "")
set(LLVM_INCLUDE_DOCS OFF CACHE BOOL "")
set(CLANG_INCLUDE_TESTS OFF CACHE BOOL "")
set(COMPILER_RT_INCLUDE_TESTS OFF CACHE BOOL "")
set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "")
set(PACKAGE_VERSION 7.1.0 CACHE STRING "")
# LIBCXX Settings
set(LIBCXX_INSTALL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_INSTALL_HEADERS ON CACHE BOOL "")
set(LIBCXX_OVERRIDE_DARWIN_INSTALL ON CACHE BOOL "")
#bootstrap
set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
set(CLANG_BOOTSTRAP_CMAKE_ARGS
-C ${CMAKE_CURRENT_LIST_DIR}/Apple-stage2.cmake
CACHE STRING "")

cmake/caches/Apple-stage2.cmake

  • This file was added.
# This file sets up a CMakeCache for Apple-style stage2 bootstrap. It is
# specified by the stage1 build.
set(LLVM_TARGETS_TO_BUILD X86 ARM AArch64 CACHE STRING "")
set(CLANG_VENDOR Apple CACHE STRING "")
set(LLVM_INCLUDE_TESTS OFF CACHE BOOL "")
set(LLVM_INCLUDE_EXAMPLES OFF CACHE BOOL "")
set(LLVM_INCLUDE_UTILS OFF CACHE BOOL "")
set(LLVM_INCLUDE_DOCS OFF CACHE BOOL "")
set(CLANG_INCLUDE_TESTS OFF CACHE BOOL "")
set(COMPILER_RT_INCLUDE_TESTS OFF CACHE BOOL "")
set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-Os -flto -gline-tables-only -DNDEBUG" CACHE STRING "")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-Os -flto -gline-tables-only -DNDEBUG" CACHE STRING "")
set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "")
set(PACKAGE_VERSION 7.1.0 CACHE STRING "")
set(LIBCXX_INSTALL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_INSTALL_HEADERS OFF CACHE BOOL "")
# setup toolchain
set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
set(LLVM_TOOLCHAIN_TOOLS
llvm-dsymutil
llvm-cov
llvm-dwarfdump
llvm-profdata
CACHE STRING "")

cmake/caches/README.txt

  • This file was added.
CMake Caches
============
This directory contains CMake cache scripts that pre-populate the CMakeCache in
a build directory with commonly used settings.
The first two cache files in the directory are used by Apple to build the clang
distribution packaged with Xcode. You can use the caches with the following
CMake invocation:
cmake -G <build system>
-C <path to llvm>/tools/clang/cmake/caches/Apple-stage1.cmake
-DCMAKE_BUILD_TYPE=Release
[-DCMAKE_INSTALL_PREFIX=<install path>]
<path to llvm>
Building the `bootstrap` target from this generation will build clang, and
`bootstrap-install` will install it.