[sanitizer] Passthrough CMAKE_OSX_DEPLOYMENT_TARGET and CMAKE_OSX_SYSROOT when building compiler-rt from clang/runtime/CMakeLists.txt

Differential Revision: https://reviews.llvm.org/D26558



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[sanitizer] Passthrough CMAKE_OSX_DEPLOYMENT_TARGET when building compiler-rt from clang/runtime/CMakeLists.txt

This breaks some Swift builds, because Swift's build scripts explicitly set CMAKE_OSX_DEPLOYMENT_TARGET. This however isn't propagated to the compiler-rt build, causing build errors.

Differential Revision: https://reviews.llvm.org/D26558



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This correctly connects compiler-rt-test-depends to test-depends and
check-compiler-rt to check-all.

Based on LLVM r280392, and Compiler-RT r280393.

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These are all long-running commands that should be in the ninja console job pool.

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When using the LLVM_BUILD_EXTERNAL_COMPILER_RT option with
LLVM_ENABLE_TESTS we should also bind check-compiler-rt to check-all so
that the compiler-rt tests run too.

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If top-level lit args are specified, you probably want that in the sub-project too.

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Now that we're on CMake 3.4.3 all the ExternalProject features we use are supported everywhere, so we don't need the version checks anymore.

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Now that we are on CMake 3.4.3 we no longer need a version check around this.

This is the clang side of r272211.

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CMake defines are set with -D, forgetting the D doesn’t work.

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Not passing this causes Compiler-RT to fail to configure on multi-lib systems.

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I have updated the compiler-rt tests.

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It makes compiler-rt tests fail if the gold plugin is enabled.

Revert "Rework interface for bitset-using features to use a notion of LTO visibility."
Revert "Driver: only produce CFI -fvisibility= error when compiling."
Revert "clang/test/CodeGenCXX/cfi-blacklist.cpp: Exclude ms targets. They would be non-cfi."

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Bitsets, and the compiler features they rely on (vtable opt, CFI),
only have visibility within the LTO'd part of the linkage unit. Therefore,
only enable these features for classes with hidden LTO visibility. This
notion is based on object file visibility or (on Windows)
dllimport/dllexport attributes.

We provide the [[clang::lto_visibility_public]] attribute to override the
compiler's LTO visibility inference in cases where the class is defined
in the non-LTO'd part of the linkage unit, or where the ABI supports
calling classes derived from abstract base classes with hidden visibility
in other linkage units (e.g. COM on Windows).

If the cross-DSO CFI mode is enabled, bitset checks are emitted even for
classes with public LTO visibility, as that mode uses a separate mechanism
to cause bitsets to be exported.

This mechanism replaces the whole-program-vtables blacklist, so remove the
-fwhole-program-vtables-blacklist flag.

Because __declspec(uuid()) now implies [[clang::lto_visibility_public]], the
support for the special attr:uuid blacklist entry is removed.

Differential Revision: http://reviews.llvm.org/D18635

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Moving clang-test-depends into the Clang tests folder and moving vtables_blacklist into the Misc folder; NFC, this simply cleans up the generated solution so that these targets don't live in the root folder of the IDE.

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[cmake] Pass through the cmake_3_2_USES_TERMINAL variable so we get progress bars on an external compiler-rt build

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This patch introduces the -fwhole-program-vtables flag, which enables the
whole-program vtable optimization feature (D16795) in Clang.

Differential Revision: http://reviews.llvm.org/D16821

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Summary:
This patch is provided in preparation for removing autoconf on 1/26. The proposal to remove autoconf on 1/26 was discussed on the llvm-dev thread here: http://lists.llvm.org/pipermail/llvm-dev/2016-January/093875.html

    "This is the way [autoconf] ends
    Not with a bang but a whimper."
    -T.S. Eliot

Reviewers: chandlerc, grosbach, bob.wilson, echristo

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D16472

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The add_dependencies call on compiler-rt-configure adds llvm-config and clang to the phony target, but not to the actual configure custom command. We need the dependency bound to the custom command so that it can't be re-ordered by Ninja.

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This is needed if your make tool is overridden.

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This prevents passthrough variables from having values.

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When passing around CMake arguments as lists of arguments any arguments containing lists need to have their semi-colons escaped otherwise CMake will split the arguments in the middle.

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This allows COMPILER_RT_* variables to be passed from the top-level CMake into the external project when LLVM_BUILD_EXTERNAL_COMPILER_RT=On.

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The required compiler-rt changes aren't present yet so attempting to
build with compiler-rt breaks. And since we're trying to deprecate
autotools we actually want to fix this in CMake primarily anyway.

This reverts r251712.

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Hopefully autotools will be deprecated soon and this entire file can go away,
but until then...

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This change makes LLVM_BUILD_EXTERNAL_COMPILER_RT work correctly when overriding CMAKE_INSTALL_PREFIX on the install action (which is how LLVM_CREATE_XCODE_TOOLCHAIN works).

This fix is two parts:
(1) Pass CMAKE_INSTALL_PREFIX in as a variable from the parent install to the child install
(2) When passing COMPILER_RT_INSTALL_PATH into the external project make sure it is passed as a string not a path.

Not specifying the full path for COMPILER_RT_INSTALL_PATH isn't enough to fix the issue because relative paths specified on the CMake command line are expanded relative to the working directory before the cache is populated. Forcing this to a string allows it to remain a relative path through to the install() calls. Relative paths specified in install() calls are expanded relative to CMAKE_INSTALL_PREFIX at install time.

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[CMake] When building clang as an external project we should pass through all variables that start with COMPILER_RT

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Summary:
Many small improvements to LLVM_BUILD_EXTERNAL_COMPILER_RT.

* Works correctly with Ninja by working around CMake Bug 14771 (https://cmake.org/Bug/view.php?id=14771)
* Has install-compiler-rt target, and installs as part of the default install target
* Sets the install paths properly so that it matches the non-standalone build
* Only generate the test targets if(LLVM_INCLUDE_TESTS)

Reviewers: samsonov, Bigcheese

Differential Revision: http://reviews.llvm.org/D13399

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Summary: When LLVM/Clang is built without ARM support, the ios_kext runtime
library is not built, but without this patch, the Makefile still tries to
copy it. This is a recent regression, because the ios_kext library used
to also be built on x86_64.

Reviewers: beanz

Subscribers: aemerson, cfe-commits, rengolin

Differential Revision: http://reviews.llvm.org/D13421

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[darwin] [builtins] Stop generating cc_kext_ios5 and move iOS architectures out of cc_kext into cc_kext_ios

Summary:
This corresponds to a patch to compiler-rt (D13112).

Xcode 7 doesn't support targeting iOS5 and earlier. Instead of just dropping cc_kext_ios5, I've repurposed it to cc_kext_ios, and I'm pulling the iOS architectures out of cc_kext. Putting OS X and iOS slices inside the same archive was just odd.

Reviewers: bogner, bob.wilson

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D13113

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Summary:
UBSan is now used in the same way as ASan, and is supported on
OSX and on iOS simulator. At the moment ASan and UBSan can't be used
together due to PR21112, but I hope to resolve it soon by
embedding UBSan into ASan.

Test Plan: regression test suite.

Reviewers: zaks.anna, kubabrecka

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8471

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This is a re-application of r229554 restricted to Linux build only.
Apple still uses Makefile/autoconf to build Clang and sanitizers.

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This reverts commit r229554.

Reverting this commit for now as several apple internal builds still
rely on this functionality.

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They autotools build has a number of missing features, supports less
OS, architectures, build configurations, doesn't have any tests and
is hard to support in sync with CMake build.

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