47 lines
1.6 KiB
Makefile
47 lines
1.6 KiB
Makefile
# $NetBSD: deptgt-end-jobs.mk,v 1.1 2020/09/23 03:06:38 rillig Exp $
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#
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# Tests for the special target .END in dependency declarations,
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# which is run after making the desired targets.
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#
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# This test is very similar to deptgt-end.mk, except for the -j option.
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# This option enables parallel mode, in which the code from job.c partially
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# replaces the code from compat.c.
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#
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# Before 2020-08-22, this test crashed with a null pointer dereference.
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# Before 2020-09-23, this test crashed with an assertion failure.
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.MAKEFLAGS: -j 8
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VAR= Should not be expanded.
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.BEGIN:
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: $@ '$${VAR}'
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...
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: $@ '$${VAR}' deferred
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# Oops: The deferred command must not be expanded twice.
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# The Var_Subst in Compat_RunCommand looks suspicious.
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# The Var_Subst in JobSaveCommand looks suspicious.
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.END:
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: $@ '$${VAR}'
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...
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: $@ '$${VAR}' deferred
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all:
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: $@ '$${VAR}'
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...
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: $@ '$${VAR}' deferred
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# Oops: The deferred command must not be expanded twice.
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# The Var_Subst in Compat_RunCommand looks suspicious.
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# The Var_Subst in JobSaveCommand looks suspicious.
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# The deferred commands are run in the order '.END .BEGIN all'.
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# This may be unexpected at first since the natural order would be
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# '.BEGIN all .END', but it is implemented correctly.
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#
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# At the point where the commands of a node with deferred commands are run,
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# the deferred commands are appended to the commands of the .END node.
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# This happens in Compat_RunCommand, and to prevent an endless loop, the
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# deferred commands of the .END node itself are not appended to itself.
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# Instead, the deferred commands of the .END node are run as if they were
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# immediate commands.
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