Flutterby™! : Careful on those cross-compiles

Careful on those cross-compiles

2026-11-04 20:14:22.356527+01 by Dan Lyke 2 comments

Dennis Forbes: Shlemiel the Painter Is Back: How Zig’s libc Rewrite Made SQLite 12,000× Slower.

How cross-compiling an application for Linux on the Mac used Zig cc, and:

In the rewrite of strspn, repl acing the musl version with the pure zig variant), the first step measures the entire length of the string. This is also seen in the rewrites of strcspn, strpbrk and strstr.

Via.

[ related topics: Free Software Weblogs Open Source Macintosh ]

comments in descending chronological order (reverse):

#Comment Re: made: 2026-11-04 23:07:49.065558+01 by: Dan Lyke

Yes. It's amazing how much nuance is often carried in extant code.

#Comment Re: made: 2026-11-04 21:14:07.656479+01 by: markd

highlights the naivety of the "lets just rewrite :all-the-things: in rust/zig/whatever" obsession.

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