繼續翻譯

`.LOW_RESOLUTION_TIME' If you specify prerequisites for `.LOW_RESOLUTION_TIME', `make' assumes that these files are created by commands that generate low resolution time stamps. The recipe for the `.LOW_RESOLUTION_TIME' target are ignored.The high resolution file time stamps of many modern file systems lessen the chance of `make' incorrectly concluding that a file is up to date. Unfortunately, some hosts do not provide a way to set a high resolution file time stamp, so commands like `cp -p' that explicitly set a file's time stamp must discard its subsecond part.If a file is created by such a command, you should list it as a prerequisite of `.LOW_RESOLUTION_TIME' so that `make' does not mistakenly conclude that the file is out of date. For example:.LOW_RESOLUTION_TIME: dstdst: srccp -p src dstSince `cp -p' discards the subsecond part of `src''s time stamp, `dst' is typically slightly older than `src' even when it is up to date. The `.LOW_RESOLUTION_TIME' line causes `make' to consider `dst' to be up to date if its time stamp is at the start of the same second that `src''s time stamp is in.Due to a limitation of the archive format, archive member time stamps are always low resolution. You need not list archive members as prerequisites of `.LOW_RESOLUTION_TIME', as `make' does this automatically.

如果你為 .LOW_RESOLUTION_TIME 指定前提條件，make 認定這些文件被 生成 低清晰度時間戳的命令來省城。.LOW_RESOLUTION_TIME 目的的片段被忽略。

現代文件系統的高清晰度文件時間戳會減少 make 錯誤地認為一個文件已經陳舊的問題。但是不幸的是，某些系統沒有提供一種方式來設定高清晰度文件時間戳，因此某些命令比如 cp -p 這樣的，顯式設定文件時間戳，卻必須把跌入個部分切掉了。如果一個文件由這樣的命令創建，你應當把它列為 .LOW_RESOLUTION_TIME 的前提條件，這樣 make 就不會錯誤地得出結論認為此文件陳舊了。例如：

.LOW_RESOLUTION_TIME: dst
dst: src
cp -p src dst

由于 cp -p 切掉了 src 文件時間戳的第二部分，所以 dst 會比src 舊一些，.LOW_RESOLUTION_TIME 行使得 make 認為 ，當 dst 的時間戳和src 一樣的時候，dst 是比較新的。

由于 庫文件格式的限制，庫文件成員的時間戳總是低解析度的。你不需要把庫文件成員列為.LOW_RESOLUTION_TIME的前提條件，因為 make 會自動這么做。

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