[Scons-users] make Command Builder not print command

[Jason Kenny]

I think there is a easier answer… it is hidden in the documents.

If the first argument is a string, a command-line Action is returned. Note that the command-line string may be preceded by an @ (at-sign) to suppress printing of the specified command line, or by a - (hyphen) to ignore the exit status from the specified command:
Action('$CC -c -o $TARGET $SOURCES')

# Doesn't print the line being executed.
Action('@build $TARGET $SOURCES')

# Ignores return value
Action('-build $TARGET $SOURCES')


Jason

From: Scons-users <scons-users-bounces at scons.org> On Behalf Of Bill Deegan
Sent: Tuesday, March 5, 2019 9:34 PM
To: SCons users mailing list <scons-users at scons.org>
Subject: Re: [Scons-users] make Command Builder not print command

Maybe an override defining PRINT_CMD_LINE_FUNC?

Like this:

import sys

def print_cmd_line(s, target, source, env):
  sys.stdout.write("AHAH\n")

env = Environment()
env.Command('file.out', 'file.in<https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffile.in&data=02%7C01%7C%7Cc3c33284464b48eed0cd08d6a1e49ee0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636874400617998292&sdata=JGIglVfxBeJ7fkiUxMP9VKywVeqoCtZLOXUnk8F3uxM%3D&reserved=0>', 'cat $SOURCE > $TARGET', PRINT_CMD_LINE_FUNC=print_cmd_line )



On Tue, Mar 5, 2019 at 7:30 PM Daniel Moody <dmoody256 at gmail.com<mailto:dmoody256 at gmail.com>> wrote:
How can I make a Command() that doesn't print the command, or print my own string instead? I don't want to use silent or -Q because I only want this command to be printed.

For example

env = Environment()
env.Command('file.out', 'file.in<https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffile.in&data=02%7C01%7C%7Cc3c33284464b48eed0cd08d6a1e49ee0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636874400618018308&sdata=U2r79jv%2BA1LStmzwMnDKmzRR%2B%2FEjfEQHJ3bVI0J2QPA%3D&reserved=0>', 'cat $SOURCE > $TARGET')

results in:

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
cat file.in<https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffile.in&data=02%7C01%7C%7Cc3c33284464b48eed0cd08d6a1e49ee0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636874400618028319&sdata=ZeqaIZjSmP5DdglcLnlHpri84DAZX9nJvZRghDxJ8UY%3D&reserved=0> > file.out
scons: done building targets.

I just want:

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: done building targets.
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