继续翻译
复制代码
Extra spaces are allowed and ignored at the beginning of the line,
but the first character must not be a tab (or the value of
`.RECIPEPREFIX')--if the line begins with a tab, it will be considered
a recipe line. Whitespace is required between `include' and the file
names, and between file names; extra whitespace is ignored there and at
the end of the directive. A comment starting with `#' is allowed at
the end of the line. If the file names contain any variable or
function references, they are expanded. *Note How to Use Variables:
Using Variables.
For example, if you have three `.mk' files, `a.mk', `b.mk', and
`c.mk', and `$(bar)' expands to `bish bash', then the following
expression
include foo *.mk $(bar)
is equivalent to
include foo a.mk b.mk c.mk bish bash
复制代码
在行的前面，多个空格是允许的，但是将被忽略。不过第一个字符不能使 tab符号(更准确地说，.RECIPIEPREFIX 的值)--如果一个行开始于 tab 符号，那就会被认为是一个片段行。
在 include 和 文件名之间需要空格，文件名和文件名之间也需要空格；多余的空格将被忽略。
在行末，以#开始的行是被允许的。如果文件名包含任何变量或者函数参照，将被展开。
*Note How to Use Variables: Using Variables.
后文待续
本文转自健哥的数据花园博客园博客，原文链接：http://www.cnblogs.com/gaojian/archive/2012/09/14/2684472.html，如需转载请自行联系原作者
