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# $NetBSD: compat-error.mk,v 1.5 2022/05/08 06:51:27 rillig Exp $
#
# Test detailed error handling in compat mode.
#
# Make several targets that alternately succeed and fail.
#
# The first failing top-level target is recorded in '.ERROR_TARGET'. While
# this information may give a hint as to which target failed, it would be more
# useful at that point to know the actual target that failed, or the complete
# chain from root cause to top-level target.
#
# Historic bugs
# Before compat.c 1.215 from 2020-12-13, '.ERROR_TARGET' was 'success3',
# which was obviously wrong.
#
# Bugs
# As of 2020-12-13, '.ERROR_CMD' is empty, which does not provide any
# insight into the command that actually failed.
#
# See also:
# Compat_MakeAll
#
# The commit that added the NULL command to gn->commands:
# CVS: 1994.06.06.22.45.??
# Git: 26a8972fd7f982502c5fbfdabd34578b99d77ca5
# 1994: Lst_Replace (cmdNode, (ClientData) NULL);
# 2020: LstNode_SetNull(cmdNode);
#
# The commit that skipped NULL commands for .ERROR_CMD:
# CVS: 2016.08.11.19.53.17
# Git: 58b23478b7353d46457089e726b07a49197388e4
.MAKEFLAGS: -k success1 fail1 success2 fail2 success3
success1 success2 success3:
: Making ${.TARGET} out of nothing.
fail1 fail2:
: Making ${.TARGET} out of nothing.
false '${.TARGET}' '$${.TARGET}' '$$$${.TARGET}'
.ERROR:
@echo ${.TARGET} target: '<'${.ERROR_TARGET:Q}'>'
@echo ${.TARGET} command: '<'${.ERROR_CMD:Q}'>'
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