зеркало из https://github.com/mozilla/gecko-dev.git
9c245b8d05
For some reason, clang 6 crashes with a stack overflow on PGO + LTO on Linux 64 bits. Clang 7 doesn't, but has other problems. After some bisecting, I found the following: - r322684 is the first revision that is broken on the release_60 branch. - that revision is a cherry pick of r322313 from trunk, which is similarly broken. - trunk was fixed by r322325, which, funnily enough, predates when r322313 was cherry-picked. While the change from r322325 is relatively large, mixing multiple different changes in a single commit, there also haven't been significant changes to the same file on trunk since (one macro name change, one documentation change, and a change related to debug info), which would tend to indicate the change is not going to break anything, or at least not more than upgrading to clang 7 would. The exact part that fixes the issue could probably be found in this large commit, but I didn't feel like digging into it further considering the above. |
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|---|---|---|
| .. | ||
| README | ||
| build-clang.py | ||
| clang-3.9-linux64.json | ||
| clang-6-linux64.json | ||
| clang-6-macosx64.json | ||
| clang-7-pre-linux64.json | ||
| clang-7-pre-mingw.json | ||
| clang-tidy-cxx14.patch | ||
| clang-tidy-linux64.json | ||
| clang-tidy-macosx64.json | ||
| clang-tidy-win32.json | ||
| clang-tidy-win64.json | ||
| clang-win32-st-an.json | ||
| clang-win64-st-an.json | ||
| clang-win64.json | ||
| compiler-rt-cross-compile.patch | ||
| compiler-rt-no-codesign.patch | ||
| fflush-before-unlocking.patch | ||
| find_symbolizer_linux.patch | ||
| llvm-debug-frame-for-5.patch | ||
| llvm-debug-frame.patch | ||
| loosen-msvc-detection.patch | ||
| msvc-host-x64.patch | ||
| r277806.patch | ||
| r285657.patch | ||
| r289565-for-3.9.patch | ||
| r313872.patch | ||
| r318309.patch | ||
| r320462.patch | ||
| r322325.patch | ||
| r322401.patch | ||
| r325356.patch | ||
| r327876.patch | ||
| r339636.patch | ||
| rename_gcov_flush.patch | ||
| workaround-issue38586.patch | ||
README
build-clang.py
==============
A script to build clang from source.
```
usage: build-clang.py [-h] -c CONFIG [--clean]
optional arguments:
-h, --help show this help message and exit
-c CONFIG, --config CONFIG
Clang configuration file
--clean Clean the build directory
```
Pre-requisites
--------------
* Working build toolchain.
* Subversion
* CMake
* Ninja
* Python 2.7
Please use the latest available CMake for your platform to avoid surprises.
Config file format
------------------
build-clang.py accepts a JSON config format with the following fields:
* llvm_revision: The LLVM SVN revision to build.
* stages: Use 1, 2, or 3 to select different compiler stages. The default is 3.
* llvm_repo: SVN path to the LLVM repo.
* clang_repo: SVN path to the Clang repo.
* extra_repo: SVN path to the clang-tools-extra repo.
* lld_repo: SVN path to the lld repo.
* compiler_repo: SVN path to the compiler-rt repo.
* libcxx_repo: SVN path to the libcxx repo.
* libcxxabi_repo: SVN path to the libcxxabi repo.
* python_path: Path to the Python 2.7 installation on the machine building clang.
* gcc_dir: Path to the gcc toolchain installation, only required on Linux.
* cc: Path to the bootsraping C Compiler.
* cxx: Path to the bootsraping C++ Compiler.
* as: Path to the assembler tool.
* ar: Path to the library archiver tool.
* ranlib: Path to the ranlib tool (optional).
* libtool: Path to the libtool tool (optional).
* ld: Path to the linker.
* patches: Optional list of patches to apply.
* build_type: The type of build to make. Supported types: Release, Debug, RelWithDebInfo or MinSizeRel.
* build_libcxx: Whether to build with libcxx. The default is false.
* build_clang_tidy: Whether to build clang-tidy with the Mozilla checks imported. The default is false.
* osx_cross_compile: Whether to invoke CMake for OS X cross compile builds.
* assertions: Whether to enable LLVM assertions. The default is false.
Environment Variables
---------------------
The following environment variables are used for cross-compile builds targeting OS X on Linux.
* CROSS_CCTOOLS_PATH: Path to the cctools directory where the cross compiler toolchain is located.
* CROSS_SYSROOT: Path to the OS X SDK directory for cross compile builds.