mesonbuild/meson

-D_FILE_OFFSET_BITS=64 should be disabled on some buggy 32-bit platforms

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#3,049 创建于 2018年2月12日

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 (7 评论) (0 反应) (0 负责人)Python (4,978 star) (1,465 fork)batch import
OS:windowsandroidbugcompilerscrossgood first issuehelp wanted

描述

Foremost in this is 32-bit Android, which is broken in amazing ways.

MinGW64-W32 is rumoured to support it, however, so we should define it for that platform.

We should ideally implement this with a combination of platform detection, version detection, and compiling code with -D_FILE_OFFSET_BITS=64 and seeing what the size of the types being used is.

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。
stale
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 systemKnowledge of C compilation flags
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。
50
研究方向
Review the linked PR #2996 for context on the buggy platforms. Examine Meson's platform detection logic in mesonbuild/compilers/ and environment.py. Implement a combination of os detection (e.g., Android), version checks, and compile time tests to conditionally define D FILE OFFSET BITS=64. Consider testing on a 32 bit Android emulator or using cross compilation.