wc: support cross-platform building and 32-bit

[YumeYuka]

Commit By @ShIroRRen

[ShIroRRen]

Windows does not support stdbuf. cygwin support is enough.

Just to make the if more correct, although it won't build it

[ShIroRRen]

You should add

#[cfg(not(unix))]
compile_error!("stdbuf is not supported on the target");

and remove stdbuf-error-command-not-supported from ftl files instead.

I added it

[oech3]

Does this PR cover #11311 and #11428 ? cc @0323pin

[sylvestre]

plenty of jobs are failing

[ShIroRRen]

plenty of jobs are failing

Because of the feature, I missed one during testing, and now I've added it.

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/printf/printf-surprise is now passing!
Note: The gnu test tests/env/env-signal-handler was skipped on 'main' but is now failing.

[oech3]

It is not clear for me how is this PR(diff) related with 32bit. uutils's CI is already running jobs for 32bit targets.

[ShIroRRen]

It is not clear for me how is this PR(diff) related with 32bit. uutils's CI is already running jobs for 32bit targets.

libc::mode_t is u16 on 32-bit and u32 on 64-bit (on Android)，but st_mode is always u32 (c_uint), so I fixed it

[oech3]

Do you actuall need 1 line diff only for it?

[ShIroRRen]

Do you actuall need 1 line diff only for it?

I only found this one error during compilation, and after fixing it, all Android targets can be compiled

[oech3]

Please reduce diff to 1 line if it is enough and squash commits. Other refactoring conflicts with other PRs.

[YumeYuka]

Please reduce diff to 1 line if it is enough and squash commits. Other refactoring conflicts with other PRs.

Done

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/misc/coreutils. tests/misc/coreutils is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/tail/truncate. tests/tail/truncate is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Note: The gnu test tests/seq/seq-epipe is now being skipped but was previously passing.
Congrats! The gnu test tests/printf/printf-surprise is now passing!

[codspeed-hq]

Merging this PR will degrade performance by 14.62%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 1 improved benchmark
❌ 2 regressed benchmarks
✅ 297 untouched benchmarks
⏩ 46 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	sort_ascii_utf8_locale	16.1 ms	15.4 ms	+4.84%
❌	Simulation	true_consecutive_calls	170.3 ns	199.4 ns	-14.62%
❌	Simulation	false_consecutive_calls	170.3 ns	199.4 ns	-14.62%

---

_{Comparing OOM-WG:main (7b88683) with main (230e0cf)}

Footnotes

1. 46 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[cakebaker]

Thanks!

[ShIroRRen]

Please reduce diff to 1 line if it is enough and squash commits. Other refactoring conflicts with other PRs.

However, this will still not solve cross-platform compilation, using MSVC to compile stdbuf will still fail

[oech3]

Windows does not have same system with LD_PRELOAD. So building it does not making a sense.

[ShIroRRen]

Windows does not have same system with LD_PRELOAD. So building it does not making a sense.

What I mean is that cross-platform builds will fail, for example, building for Android on Windows, because the build script checks the current platform rather than the platform to be built

[oech3]

Oh sorry. Yes, build.rs uses cfg