CODEWITHSUNDEEP
linuxperlmakefile
sonicgc
sonicgc

Reputation: 5

How to save screen output to a text file in Makefile

I was using the original makefile to build my code with Perl scripts written in makefile.

Now I want to print all the log shown on screen to a txt file.

What command can I use in my makefile in order to do this?

I was meant to use some command in makefile to output what will be shown on screen to a txt file. for example, if the makefile looks like: 

all:

  perl filename.pl

how should I write in my makefile so that every time I type"make all" in command line, it will automatically save the output to a txt file?

Hi now I need to improve it, I need to save the output to a txt file whose directory should according to the input of my perl script.

For example, in the makefile:

all:

 $(X)make -C .. DIR=$(DIR) Y=$(Y) Z=$(Z)
 perl filename.pl $(DIR)/$(Y)/i.lst 2>&1 | tee log.txt

how should I change in the makefile so that the log.txt will be saved at the directory equals the input $DIR? Ans I also want to change the name "log" to the input, how could I do this?

Can anyone help?

Upvotes: 0

Views: 9363

Answers (2)

Chris Dodd
Chris Dodd

Reputation: 126185

You can have a make rule that invokes make recursively, redirecting things to a file:

all:
        $(MAKE) everything >log.txt

everything: ...whatever you had before for all

Of course, if you just have one command, you might as well put the redirection in there:

all:
        perl filename.pl >log.txt

If you want the output to both appear on the screen and be copied to the file, you can use tee:

all:
        perl filename.pl | tee log.txt

..and if you want to include stderr output in the file, you can redirect that too:

all:
        perl filename.pl 2>&1 | tee log.txt

Upvotes: 4

BlackVegetable
BlackVegetable

Reputation: 13034

From the command line, piping the output from make to a text file should be pretty straightforward:

make > new_file.txt

Use two arrows instead if you want it to concatenate instead of replace each time:

make >> new_file.txt

Upvotes: 1

Related Questions