gecko-dev/build/build-clang
Mike Hommey df3223a294 Bug 1771242 - Upgrade clang to 14.0.4. r=firefox-build-system-reviewers,nalexander
Differential Revision: https://phabricator.services.mozilla.com/D147384
2022-05-26 04:56:10 +00:00
..
1stage.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
2stages.json Bug 1726782 - Separate stage from platform config for clang build. r=firefox-build-system-reviewers,mhentges 2022-02-14 21:10:00 +00:00
4stages-pgo.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
D116995.diff Bug 1767917 - Remove rust compiler-builtins-hack. r=firefox-build-system-reviewers,andi 2022-05-06 12:26:38 +00:00
README Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
Remove-FlushViewOfFile-when-unmaping-gcda-files-clang-15.patch Bug 1763937 - fix `clang-trunk` toolchain. r=firefox-build-system-reviewers,glandium 2022-04-19 09:01:27 +00:00
Remove-FlushViewOfFile-when-unmaping-gcda-files.patch Bug 1733611: Remove FlushViewOfFile call when unmaping gcda files in compiler-rt r=marco,andi 2021-10-08 15:06:36 +00:00
android-mangling-error_clang_12.patch
bug47258-extract-symbols-mbcs.patch
build-clang.py Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
clang-5.0.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
clang-14.json Bug 1771242 - Upgrade clang to 14.0.4. r=firefox-build-system-reviewers,nalexander 2022-05-26 04:56:10 +00:00
clang-tidy-ci.patch Bug 1758780 - Update builders to clang 14. r=firefox-build-system-reviewers,mhentges,andi 2022-04-21 04:36:24 +00:00
clang-tidy-external-linux64.json Bug 1744890 - Remove build_type field from clang configs. r=firefox-build-system-reviewers,andi 2021-12-08 06:29:14 +00:00
clang-tidy-linux64.json Bug 1744890 - Remove build_type field from clang configs. r=firefox-build-system-reviewers,andi 2021-12-08 06:29:14 +00:00
clang-tidy-macosx64.json Bug 1769174 - Consistently indent clang json files. r=firefox-build-system-reviewers,andi 2022-05-14 21:22:23 +00:00
clang-tidy-win64.json Bug 1744890 - Remove build_type field from clang configs. r=firefox-build-system-reviewers,andi 2021-12-08 06:29:14 +00:00
clang-trunk.json Bug 1769174 - Synchronize patches between clang 14 and clang trunk. r=firefox-build-system-reviewers,andi 2022-05-14 21:22:24 +00:00
compiler-rt-cross-compile.patch Backed out changeset 984c21a8cf6a (bug 1744890) for causing build bustages. CLOSED TREE 2021-12-08 11:23:12 +02:00
compiler-rt-no-codesign.patch
downgrade-mangling-error_clang_12.patch
find_symbolizer_linux_clang_10.patch
find_symbolizer_linux_clang_15.patch Bug 1755076 - Adjust find_symbolizer_linux_clang patch to latest trunk. r=firefox-build-system-reviewers,mhentges 2022-02-12 05:52:14 +00:00
fuzzing_ccov_build_clang_12.patch
linux64.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
macosx64.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00
profile-g4a10504e1f70c.patch Bug 1730078 - Don't build some things during early stages of the clang compilation. r=firefox-build-system-reviewers,andi,mhentges 2021-09-15 02:39:52 +00:00
profile.json Bug 1726782 - Create a new task generating a clang profile for PGO. r=firefox-build-system-reviewers,mhentges 2022-02-14 21:10:00 +00:00
revert-llvmorg-14-init-3651-g85ba583eba19.patch Bug 1745115 - Apply the same patches as clang 13 to clang trunk. r=firefox-build-system-reviewers,andi 2021-12-10 00:29:59 +00:00
revert-llvmorg-14-init-3652-gf3c2094d8c11.patch Bug 1753859 - Remove changes to clang/test/CodeGen/alloc-fns-alignment.c from patches. r=firefox-build-system-reviewers,andi 2022-02-08 08:20:00 +00:00
revert-llvmorg-14-init-11890-gf86deb18cab6.patch Bug 1758780 - Update builders to clang 14. r=firefox-build-system-reviewers,mhentges,andi 2022-04-21 04:36:24 +00:00
revert-llvmorg-14-init-14141-gd6d3000a2f6d.patch Bug 1758780 - Update builders to clang 14. r=firefox-build-system-reviewers,mhentges,andi 2022-04-21 04:36:24 +00:00
skip-3-stages.json Bug 1726782 - Create a new task generating a clang profile for PGO. r=firefox-build-system-reviewers,mhentges 2022-02-14 21:10:00 +00:00
skip-stage-1-win64.json Bug 1758780 - Use LLVM's lib and link tools when building clang with clang. r=firefox-build-system-reviewers,mhentges 2022-04-12 01:30:54 +00:00
skip-stage-1.json Bug 1751839 - Build clang stage 1 as a separate task. r=firefox-build-system-reviewers,andi 2022-01-25 21:51:17 +00:00
tsan-D101154.patch
unpoison-thread-stacks_clang_10.patch
win64-no-symlink.patch Bug 1758780 - Update builders to clang 14. r=firefox-build-system-reviewers,mhentges,andi 2022-04-21 04:36:24 +00:00
win64.json Bug 1770302 - Consolidate how the clang targets are configured. r=firefox-build-system-reviewers,andi 2022-05-20 08:33:15 +00:00

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.
* git
* CMake
* Ninja
* Python 2.7 and 3

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:

* stages: Use 1, 2, 3 or 4 to select different compiler stages.  The default is 2.
* 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.
* targets: The targets supported by the final stage LLVM/clang.
* 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.
* pgo: Whether to build with PGO (requires stages == 4).  The default is false.

The revisions are defined in taskcluster/ci/fetch/toolchains.yml. They are usually commit sha1s corresponding to upstream tags.

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.