63 lines
2.0 KiB
Makefile
63 lines
2.0 KiB
Makefile
# $NetBSD: cond-func-make-main.mk,v 1.2 2021/04/04 10:13:09 rillig Exp $
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#
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# Test how accurately the make() function in .if conditions reflects
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# what is actually made.
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#
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# There are several ways to specify what is being made:
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#
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# 1. The default main target is the first target in the given makefiles that
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# is not one of the special targets. For example, .PHONY is special when
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# it appears on the left-hand side of the ':'. It is not special on the
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# right-hand side though.
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#
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# 2. Command line arguments that are neither options (-ds or -k) nor variable
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# assignments (VAR=value) are interpreted as targets to be made. These
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# override the default main target from above.
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#
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# 3. All sources of the first '.MAIN: sources' line. Any further .MAIN line
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# is treated as if .MAIN were a regular name.
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#
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# This test only covers items 1 and 3. For item 2, see cond-func-make.mk.
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first-main-target:
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: Making ${.TARGET}.
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# Even though the main-target would actually be made at this point, it is
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# ignored by the make() function.
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.if make(first-main-target)
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. error
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.endif
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# Declaring a target via the .MAIN dependency adds it to the targets to be
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# created (opts.create), but only that list was empty at the beginning of
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# the line. This implies that several main targets can be set at the name
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# time, but they have to be in the same dependency group.
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#
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# See ParseDependencyTargetSpecial, branch SP_MAIN.
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.MAIN: dot-main-target-1a dot-main-target-1b
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.if !make(dot-main-target-1a)
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. error
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.endif
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.if !make(dot-main-target-1b)
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. error
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.endif
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dot-main-target-{1,2}{a,b}:
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: Making ${.TARGET}.
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# At this point, the list of targets to be made (opts.create) is not empty
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# anymore. ParseDependencyTargetSpecial therefore treats the .MAIN as if
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# it were an ordinary target. Since .MAIN is not listed as a dependency
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# anywhere, it is not made.
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.if target(.MAIN)
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. error
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.endif
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.MAIN: dot-main-target-2a dot-main-target-2b
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.if !target(.MAIN)
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. error
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.endif
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.if make(dot-main-target-2a)
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. error
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.endif
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