This is needed when using compiler wrappers such as ccache or distcc
and should address the failure on clang-x86_64-debian-fast bot.
Differential Revision: https://reviews.llvm.org/D62104
llvm-svn: 361111
Darwin targets were generating CMake install rules but not the
corresponding install targets. Centralize the existing install target
creation to a function and use that function for both Darwin and
non-Darwin builds.
Differential Revision: https://reviews.llvm.org/D61541
llvm-svn: 360181
The initial implementation didn't properly support cross-compilation
via the runtime build, the updated implementation should address that
by expanding the CMAKE_C_COMPILE_OBJECT variable with correct values.
Differential Revision: https://reviews.llvm.org/D61356
llvm-svn: 359644
Clang relies on existence of certain symbols that are normally
provided by crtbegin.o/crtend.o. However, LLVM does not currently
provide implementation of these files, instead relying on either
libgcc or implementations provided as part of the system.
This change provides an initial implementation of crtbegin.o/crtend.o
that can be used on system that don't provide crtbegin.o/crtend.o as
part of their C library.
Differential Revision: https://reviews.llvm.org/D28791
llvm-svn: 359591
Clang relies on existence of certain symbols that are normally
provided by crtbegin.o/crtend.o. However, LLVM does not currently
provide implementation of these files, instead relying on either
libgcc or implementations provided as part of the system.
This change provides an initial implementation of crtbegin.o/crtend.o
that can be used on system that don't provide crtbegin.o/crtend.o as
part of their C library.
Differential Revision: https://reviews.llvm.org/D28791
llvm-svn: 359576
When COMPILER_RT_INTERCEPT_LIBDISPATCH is ON the TSan runtime library
now has a dependency on the blocks runtime and libdispatch. Make sure we
set all the required linking options.
Also add cmake options for specifying additional library paths to
instruct the linker where to search for libdispatch and the blocks
runtime. This allows us to build TSan runtime with libdispatch support
without installing those libraries into default linker library paths.
`CMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY` is necessary to avoid
aborting the build due to failing the link step in CMake's
check_c_compiler test.
Reviewed By: dvyukov, kubamracek
Differential Revision: https://reviews.llvm.org/D59334
llvm-svn: 356281
This changes add_custom_libcxx to also build libcxxabi and merges
the two into a static and hermetic library.
There are multiple advantages:
1) The resulting libFuzzer doesn't expose C++ internals and looks
like a plain C library.
2) We don't have to manually link in libstdc++ to provide cxxabi.
3) The sanitizer tests cannot interfere with an installed version
of libc++.so in LD_LIBRARY_PATH.
Differential Revision: https://reviews.llvm.org/D58013
llvm-svn: 354212
We shouldn't be treating runtimes builds as standalone builds since
we have enough of the context loaded into the runtimes environment.
Differential Revision: https://reviews.llvm.org/D57992
llvm-svn: 353601
There's no need to expose these dependencies to consumers. This
matches the change made to other runtimes in D57456.
Differential Revision: https://reviews.llvm.org/D57873
llvm-svn: 353376
When building the custom libc++ that's used by libFuzzer as well as
MSan and TSan tests, passthrough the C and C++ flags that were passed
to the compiler-rt CMake build. These may be needed to successfuly
compile the library on a particular platform.
Differential Revision: https://reviews.llvm.org/D53862
llvm-svn: 345788
Summary:
C++ flags should not be used for not-C++ files as it may trigger
-Werror=unused-command-line-argument. CMake will use CMAKE_C_FLAGS,
CMAKE_CXX_FLAGS, and CMAKE_ASM_FLAGS as appropriate implicitly, so
this does not need to be explicitly handled here.
This change depends on https://reviews.llvm.org/D53301, since one of
the builders depended on this behavior because it was not configuring
CMAKE_ASM_FLAGS.
Reviewers: eugenis, vitalybuka
Reviewed By: eugenis, vitalybuka
Subscribers: dberris, mgorny, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D53335
llvm-svn: 344751
Summary:
This change introduces an `FDRLogWriter` type which is responsible for
serialising metadata and function records to character buffers. This is
the first step in a refactoring of the implementation of the FDR runtime
to allow for more granular testing of the individual components of the
implementation.
The main contribution of this change is a means of hiding the details of
how specific records are written to a buffer, and for managing the
extents of these buffers. We make use of C++ features (templates and
some metaprogramming) to reduce repetition in the act of writing out
specific kinds of records to the buffer.
In this process, we make a number of changes across both LLVM and
compiler-rt to allow us to use the `Trace` abstraction defined in the
LLVM project in the testing of the runtime implementation. This gives us
a closer end-to-end test which version-locks the runtime implementation
with the loading implementation in LLVM.
We also allow using gmock in compiler-rt unit tests, by adding the
requisite definitions in the `AddCompilerRT.cmake` module. We also add
the terminfo library detection along with inclusion of the appropriate
compiler flags for header include lookup.
Finally, we've gone ahead and updated the FDR logging implementation to
use the FDRLogWriter for the lowest-level record-writing details.
Following patches will isolate the state machine transitions which
manage the set-up and tear-down of the buffers we're using in multiple
threads.
Reviewers: mboerger, eizan
Subscribers: mgorny, jfb, llvm-commits
Differential Revision: https://reviews.llvm.org/D52220
llvm-svn: 342617
Summary:
This change introduces an `FDRLogWriter` type which is responsible for
serialising metadata and function records to character buffers. This is
the first step in a refactoring of the implementation of the FDR runtime
to allow for more granular testing of the individual components of the
implementation.
The main contribution of this change is a means of hiding the details of
how specific records are written to a buffer, and for managing the
extents of these buffers. We make use of C++ features (templates and
some metaprogramming) to reduce repetition in the act of writing out
specific kinds of records to the buffer.
In this process, we make a number of changes across both LLVM and
compiler-rt to allow us to use the `Trace` abstraction defined in the
LLVM project in the testing of the runtime implementation. This gives us
a closer end-to-end test which version-locks the runtime implementation
with the loading implementation in LLVM.
We also allow using gmock in compiler-rt unit tests, by adding the
requisite definitions in the `AddCompilerRT.cmake` module.
Finally, we've gone ahead and updated the FDR logging implementation to
use the FDRLogWriter for the lowest-level record-writing details.
Following patches will isolate the state machine transitions which
manage the set-up and tear-down of the buffers we're using in multiple
threads.
Reviewers: mboerger, eizan
Subscribers: mgorny, jfb, llvm-commits
Differential Revision: https://reviews.llvm.org/D52220
llvm-svn: 342518
when building with an IDE so that header files show up in the UI.
This massively improves the development workflow in IDEs.
To implement this a new function `compiler_rt_process_sources(...)` has
been added that adds header files to the list of sources when the
generator is an IDE. For non-IDE generators (e.g. Ninja/Makefile) no
changes are made to the list of source files.
The function can be passed a list of headers via the
`ADDITIONAL_HEADERS` argument. For each runtime library a list of
explicit header files has been added and passed via
`ADDITIONAL_HEADERS`. For `tsan` and `sanitizer_common` a list of
headers was already present but it was stale and has been updated
to reflect the current state of the source tree.
The original version of this patch used file globbing (`*.{h,inc,def}`)
to find the headers but the approach was changed due to this being a
CMake anti-pattern (if the list of headers changes CMake won't
automatically re-generate if globbing is used).
The LLVM repo contains a similar function named `llvm_process_sources()`
but we don't use it here for several reasons:
* It depends on the `LLVM_ENABLE_OPTION` cache variable which is
not set in standalone compiler-rt builds.
* We would have to `include(LLVMProcessSources)` which I'd like to
avoid because it would include a bunch of stuff we don't need.
Differential Revision: https://reviews.llvm.org/D48422
llvm-svn: 336663
This change adds a support for multiarch style runtimes layout, so in
addition to the existing layout where runtimes get installed to:
lib/clang/$version/lib/$os
Clang now allows runtimes to be installed to:
lib/clang/$version/$target/lib
This also includes libc++, libc++abi and libunwind; today those are
assumed to be in Clang library directory built for host, with the
new layout it is possible to install libc++, libc++abi and libunwind
into the runtime directory built for different targets.
The use of new layout is enabled by setting the
LLVM_ENABLE_RUNTIME_TARGET_DIR CMake variable and is supported by both
projects and runtimes layouts. The runtimes CMake build has been further
modified to use the new layout when building runtimes for multiple
targets.
Differential Revision: https://reviews.llvm.org/D45604
llvm-svn: 335809
build with an IDE (e.g. Xcode) as the generator.
Previously the global `USE_FOLDERS` property wasn't set in standalone
builds leading to existing settings of FOLDER not being respected.
In addition to this there were several targets that appeared at the top
level that were not interesting and clustered up the view. These have
been changed to be displayed in "Compiler-RT Misc".
Now when an Xcode project is generated from a standalone compiler-rt
build the project navigator is much less cluttered. The interesting
libraries should appear in "Compiler-RT Libraries" in the IDE.
Differential Revision: https://reviews.llvm.org/D48378
llvm-svn: 335728
When XRay is being built as part of the just built compiler together
with libc++ as part of the runtimes build, we need an explicit
dependency from XRay to libc++ to make sure that the library is
available by the time we start building XRay.
Differential Revision: https://reviews.llvm.org/D48113
llvm-svn: 334575
When building the dylib, the C++ headers are fundamentally non-module.
They require special versions of the headers in order to provide C++03 and
legacy ABI definitions. This causes ODR issues when modules are enabled
during both the build and the usage of the libc++ headers.
This patch fixes the build error by disabling modules when building the
libc++ sources.
llvm-svn: 334220
-z,defs is incompatible with sanitizers so we need to filter it out
from the linker flags before passing them to the libc++ build.
Differential Revision: https://reviews.llvm.org/D47865
llvm-svn: 334212
The Android sanitizer buildbot is failing with this change and it
looks like an additional change to cmake is necessary to fix the
build. Reverting this change for now.
llvm-svn: 329828
CMAKE_CXX_FLAGS was added twice to the command line. This causes the command
line options to be doubled which works until it doesn't as not all options
can be specified twice.
For example,
clang-cl foo.c /GS- /GS- -mllvm -small-loop-cost=1 -mllvm -small-loop-cost=1
clang (LLVM option parsing): for the -small-loop-cost option: may only occur zero or one times!
llvm-svn: 329817
This changes the add_custom_libcxx macro to resemble the
llvm_ExternalProject_Add. The primary motivation is to avoid
unnecessary libFuzzer rebuilds that are being done on every
Ninja/Make invocation. The libc++ should be only rebuilt whenever
the libc++ source itself changes.
Differential Revision: https://reviews.llvm.org/D43213
llvm-svn: 326921
`set_target_compile_flags()` ultimately sets COMPILE_FLAGS which is
added to CMAKE_CXX_FLAGS in the compile rule, so passing
CMAKE_CXX_FLAGS causes them to be duplicated.
Differential Revision: https://reviews.llvm.org/D42398
llvm-svn: 323626
Clang and llvm already use llvm_setup_rpath(), so this change will
help standarize rpath usage across all projects.
Differential Revision: https://reviews.llvm.org/D42462
llvm-svn: 323606
add_custom_libcxx uses the just built compiler and installs the
built libc++, e.g. for testing, neither of which is desirable in
case of Fuzzer where the libc++ should be built using the host
compiler and it's only linked into the libFuzzer and should never
be installed. This change introduces additional arguments to
add_custom_libcxx to allow parametrizing its behavior.
Differential Revision: https://reviews.llvm.org/D42330
llvm-svn: 323054
add_custom_libcxx uses the just built compiler and installs the
built libc++, e.g. for testing, neither of which is desirable in
case of Fuzzer where the libc++ should be built using the host
compiler and it's only linked into the libFuzzer and should never
be installed. This change introduces additional arguments to
add_custom_libcxx to allow parametrizing its behavior.
Differential Revision: https://reviews.llvm.org/D42330
llvm-svn: 323032
Currently these files are being installed into a root installation
directory, but this triggers an error when the installation directory
is set to an empty string which is often the case when DESTDIR is
used to control the installation destination.
Differential Revision: https://reviews.llvm.org/D41673
llvm-svn: 322451
Currently these files are being installed into a root installation
directory, but this triggers an error when the installation directory
is set to an empty string which is often the case when DESTDIR is
used to control the installation destination.
Differential Revision: https://reviews.llvm.org/D41673
llvm-svn: 322256
Currently these files are being installed into a root installation
directory, but this triggers an error when the installation directory
is set to an empty string which is often the case when DESTDIR is
used to control the installation destination.
Differential Revision: https://reviews.llvm.org/D41673
llvm-svn: 322234
Currently these files are being installed into a root installation
directory, but this triggers an error when the installation directory
is set to an empty string which is often the case when DESTDIR is
used to control the installation destination.
Differential Revision: https://reviews.llvm.org/D41673
llvm-svn: 322153
This also slightly refactors the code that's checking the directory
presence which allows eliminating one unnecessary variable.
Differential Revision: https://reviews.llvm.org/D40637
llvm-svn: 320446
These targets strip during installation, and are required to support
install-distribution-stripped in LLVM (to support a stripped
distribution). LLVM has an add_llvm_install_targets function for this
purpose, but we can't rely on LLVM being present.
Differential Revision: https://reviews.llvm.org/D40687
llvm-svn: 319569
Petr Hosek