mesonbuild/meson

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

Open

#3,049 opened on Feb 12, 2018

View on GitHub
 (7 comments) (0 reactions) (0 assignees)Python (4,978 stars) (1,465 forks)batch import
OS:windowsandroidbugcompilerscrossgood first issuehelp wanted

Description

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.

Contributor guide

Tech stack
pythonccpp
Domain
build system
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Familiarity with Meson build systemKnowledge of C compilation flags
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
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.