如何制作Makefile来将命令及其输出记录到文件中? [英] How do I make a Makefile to log both command and its output to a file?

问题描述

我想将命令及其输出都记录到日志文件中.看起来很容易.只需将stdout重定向到日志文件即可.

I want to log both the command and its output to a log file. It seems easy. Just redirect stdout to the log file.

myrule:  
  mycommand >> logfile  

但这仅记录命令的输出.不是命令本身.
我还会回显命令并将该输出重定向到日志文件吗?

But this only logs the output of the command. Not the command itself.
Do I also echo the command and redirect that output to the log file?

myrule:
  @echo mycommand >> logile
  mycommand >> logfile

这种"mycommand"的重复看起来不好，并且占用了食谱中的空间.尤其是食谱长的时候.

This duplication of 'mycommand' doesn't look good and it takes up space in the recipe. Especially if the recipe is long.

我应该创建一个函数并为我要记录的每个命令调用它吗?

Should I create a function and call it for every command I want to log?

define log_and_run
@echo $(1) >> logfile
$(1) >> logfile
endef

myrule:
  $(call log_and_run,mycommand)

现在，我不必重复"mycommand".但是现在，"mycommand"在配方中变得不那么明显了.注意是在呼叫"上，而不是在"mycommand"上.

Now I don't have to duplicate 'mycommand'. But now 'mycommand' is less visible in the recipe. Attention is on the 'call', not on 'mycommand'.

如果'mycommand'是这样的话

And what if 'mycommand' is something like

$(CC) -o $@ -Wl,--linkeroption $<

在调用"log_and_run"时，逗号会将命令分为两个参数.

The comma will split the command into two arguments when calling 'log_and_run'.

有人对此有一个解决方案，可以不引起人们的注意，而可以处理任意命令吗?

Does anybody have a solution for this that doesn't take attention away from the commands and works for arbitrary commands?

推荐答案

也许让外壳程序完成所有繁重的工作吗?IE.像这样的东西:

Let the shell do all the heavy lifting, maybe? I.e. something like this:

.PHONY: all myrule myrule-with-macro
all: myrule myrule-with-macro

mycommand = echo "Running $@..."

myrule:
    (set -x; $(mycommand)) >>$@.log 2>&1

define log_and_run
(set -x; $(1)) >>$@.log 2>&1
endef

myrule-with-macro:
    $(call log_and_run,$(mycommand))

试运行:

$ make
(set -x; echo "Running myrule...") >>myrule.log 2>&1
(set -x; echo "Running myrule-with-macro...") >>myrule-with-macro.log 2>&1

$ ls myrule*.log
myrule.log  myrule-with-macro.log

$ cat myrule*.log
+ echo 'Running myrule...'
Running myrule...
+ echo 'Running myrule-with-macro...'
Running myrule-with-macro...

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