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# $NetBSD: opt-debug-jobs.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
#
# Tests for the -dj command line option, which adds debug logging about
# running jobs in multiple shells.
.MAKEFLAGS: -dj
# Run in parallel mode since the debug logging is more interesting there
# than in compat mode.
.MAKEFLAGS: -j1
all:
# Only the actual command is logged.
# To see the evaluation of the expressions, use -dv.
: ${:Uexpanded} expression
# Undefined variables expand to empty strings.
# Multiple spaces are preserved in the command, as they might be
# significant.
: ${UNDEF} variable
# In the debug output, single quotes are not escaped, even though
# the whole command is enclosed in single quotes as well.
# This allows to copy and paste the whole command, without having
# to unescape anything.
: 'single' and "double" quotes
# Avoid a race condition in the debug output. Without sleeping,
# it is not guaranteed that the two lines "exited/stopped" and
# "JobFinish" are output earlier than the stdout of the actual shell
# commands. The '@' prefix avoids that this final command gets into
# another race condition with the "exited/stopped" line.
@sleep 1
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