SCons自定义生成器-生成多个文件并输出一个文件 [英] SCons custom builder - build with multiple files and output one file

问题描述

如果我有一个可执行文件，一次可以从多个文件生成输出，-

If I have an executable that generates an output from multiple files at a time -

generate_output -o a.out -f input1.txt input2.txt input3.txt

有没有办法为这个？
我现在所拥有的是-

Is there a way to write such a custom builder for this? What I have at the moment is -

builder = Builder(
        action='generate_output -o $TARGET -f $SOURCE',
        suffix='.out', src_suffix='.txt')

然后它仅按顺序生成文件，这不是我真正想要的-

Then it only generates files in a sequence, which is not what I really wanted -

generate_output -o input1.out -f input1.txt
generate_output -o input2.out -f input2.txt
# etc...

推荐答案

尝试使用 $ SOURCES ，请参见变量替换：

builder = Builder(
        action='generate_output -o $TARGET -f $SOURCES',
        suffix='.out', src_suffix='.txt')

在这个简单示例中对我有用：

It works for me in this simple example:

env = Environment()

builder = Builder(action='cat $SOURCES > $TARGET',
        suffix='.out', src_suffix='.txt')

env = Environment(BUILDERS = {'MyBld' : builder})

env.MyBld('all', ['a.txt', 'b.txt', 'c.txt'])

只要 generate_output 不需要 -f 到每个输入文件之前，此方法就起作用。

This will work as long as generate_output doesn't require -f to precede each input file.

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