gecko-dev/build/build-clang
Emilio Cobos Álvarez da05bafa94 Bug 1394825 - Update minimum clang version to 4.0. r=glandium
libclang 3.9 has a bug that makes bindgen unable to distinguish some typedefs
from the underlying type, which matters for bug 1523071.

We have had quite a few workarounds for this bug and I don't really want to add
more, since in this case it is non-trivial. I think requiring libclang 4.0+ is
reasonable at this point.

Of the distros that can't build Firefox out of the box with clang, dropping support
for clang 3.9 would only break Ubuntu 14.04 LTS, which support ends April 2019,
right before we release 67.

Differential Revision: https://phabricator.services.mozilla.com/D18889

--HG--
rename : build/build-clang/clang-3.9-linux64.json => build/build-clang/clang-4.0-linux64.json
rename : taskcluster/scripts/misc/build-clang-3.9-linux.sh => taskcluster/scripts/misc/build-clang-4.0-linux.sh
extra : moz-landing-system : lando
2019-02-10 02:56:13 +00:00
..
D57636.diff Bug 1525196 - Apply https://reviews.llvm.org/D57636 to clang r=dmajor 2019-02-07 13:58:43 +00:00
README Bug 1421404: Add lld to the build-clang task. r=glandium 2017-12-01 11:12:07 -05:00
build-clang.py Bug 1518630 - Build compiler-rt profiling library for android x86 and aarch64. r=froydnj 2019-01-18 01:55:41 +00:00
clang-4.0-linux64.json Bug 1394825 - Update minimum clang version to 4.0. r=glandium 2019-02-10 02:56:13 +00:00
clang-7-android.json Bug 1518630 - Build compiler-rt profiling library for android x86 and aarch64. r=froydnj 2019-01-18 01:55:41 +00:00
clang-7-linux64.json Bug 1518726 - Apply https://reviews.llvm.org/D56475 to clang. r=froydnj 2019-01-10 00:18:28 +00:00
clang-7-macosx64.json Bug 1518726 - Apply https://reviews.llvm.org/D56475 to clang. r=froydnj 2019-01-10 00:18:28 +00:00
clang-tidy-linux64.json Bug 1516374 - Upgrade clang to 7.0.1. r=dmajor 2019-01-09 23:01:46 +00:00
clang-tidy-macosx64.json Bug 1516374 - Upgrade clang to 7.0.1. r=dmajor 2019-01-09 23:01:46 +00:00
clang-tidy-win32.json Bug 1516374 - Upgrade clang to 7.0.1. r=dmajor 2019-01-09 23:01:46 +00:00
clang-tidy-win64.json Bug 1516374 - Upgrade clang to 7.0.1. r=dmajor 2019-01-09 23:01:46 +00:00
clang-trunk-mingw.json Bug 1518726 - Apply https://reviews.llvm.org/D56475 to clang. r=froydnj 2019-01-10 00:18:28 +00:00
clang-win64.json Bug 1525957 - Bump clang-cl to 8.0.0rc2 r=glandium 2019-02-08 09:03:30 +00:00
compiler-rt-cross-compile.patch Bug 1513798 - Use x86_64-darwin11 as a prefix for cctools-port, rather than x86_64-apple-darwin11. r=nalexander 2018-12-18 10:50:08 +09:00
compiler-rt-no-codesign.patch Bug 1492663 - Upgrade most CI builds to clang 7 r=froydnj 2018-10-25 07:38:35 +09:00
downgrade-mangling-error.patch Bug 1418415 - Add a patch to win64-clang to downgrade a mangling error. r=dmajor 2018-10-31 19:51:52 +00:00
find_symbolizer_linux.patch Bug 1415689 - Add Clang 6 (pre) and use it for ASan builds. r=froydnj 2017-11-10 10:14:26 +01:00
llvm-debug-frame.patch
loosen-msvc-detection.patch Bug 1412952 - Loosen clang's MSVC detection to accept our automation's fake paths. r=froydnj 2017-11-03 12:29:58 -04:00
r277806.patch
r285657.patch
r289565-for-3.9.patch Bug 1410148 - Backport llvm r289565 to clang 3.9. r=gps 2017-12-28 14:54:51 +09:00
r313872.patch Bug 1410148 - Backport llvm r289565 to clang 3.9. r=gps 2017-12-28 14:54:51 +09:00
r322325.patch Bug 1484888 - Apply upstream patch that fixes a clang crash with stack overflow on PGO + LTO on Linux. r=froydnj 2018-08-22 09:52:17 +09:00
r322401.patch Bug 1478927 - Upgrade clang 6 to 6.0.1 and apply some miscompilation patches. r=dmajor 2018-07-27 15:53:02 +09:00
r325356.patch Bug 1478927 - Upgrade clang 6 to 6.0.1 and apply some miscompilation patches. r=dmajor 2018-07-27 15:53:02 +09:00
r339636.patch Bug 1483123 - Apply miscompilation fix from clang upstream. r=froydnj 2018-08-15 17:34:21 +09:00
r350774.patch Bug 1518726 - Apply https://reviews.llvm.org/D56475 to clang. r=froydnj 2019-01-10 00:18:28 +00:00
rename_gcov_flush_.patch Bug 1502021 - Keep renaming __gcov_flush in LLVM to avoid naming clashes with builds mixing GCC and LLVM coverage instrumentation. r=decoder 2018-11-14 01:41:22 +01:00
static-llvm-symbolizer.patch Bug 1492037 - Build clang with LLVM as a shared library. r=froydnj 2018-09-21 10:41:36 +09:00
unpoison-thread-stacks.patch Bug 1521129 - Bump clang-cl to 8.0.0 rc1 r=glandium 2019-01-24 15:03:52 +00:00
workaround-issue38586.patch Backed out 2 changesets (bug 1479800, bug 1483779)for frequent cgx and arm64 failures 2018-08-17 09:50:30 +03:00

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.