mesonbuild/meson

Support b_lto with clang-cl and lld-link

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#13,095 创建于 2024年4月15日

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 (1 评论) (0 反应) (0 负责人)Python (4,978 star) (1,465 fork)batch import
OS:windowscompilersenhancementgood first issue

描述

Describe the bug When using clang-cl and lld-link, b_lto is not recognized by meson.

$ meson configure -Db_lto=true

ERROR: Unknown options: "b_lto"

Expected behavior clang-cl and lld-link supporting link-time optimization, meson should be able to plug it in too.

system parameters

  • Windows 11, using CC=clang-cl; CXX=clang-cl (lld-link is set as the default linker)
  • Python 3.11.2
  • meson 1.4.0

贡献者指南

技术栈
pythonccpp
领域
build system
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Familiarity with Meson build systemUnderstanding of link time optimizationKnowledge of clang cl and lld link
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
45
研究方向
The issue is a feature request to support b lto with clang cl and lld link. Start by examining how b lto is currently defined in the build option files, likely mesonbuild/options.py. Look at how compiler and linker detection works for other toolchains in mesonbuild/compilers/. Extend the logic to recognize clang cl and lld link and allow b lto. Check the one comment on the issue for any additional hints. After implementing, test with a sample project using clang cl and lld link on Windows.