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1b65f0bd2b
o allow env var MAKE_OBJDIR_CHECK_WRITABLE=no to skip writable checks in InitObjdir. Explicit .OBJDIR target always allows read-only directory. o Fix building and unit-tests on non-BSD. o More code cleanup and refactoring. o More unit tests
42 lines
1.2 KiB
Makefile
42 lines
1.2 KiB
Makefile
# $NetBSD: deptgt.mk,v 1.9 2020/11/15 11:57:00 rillig Exp $
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#
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# Tests for special targets like .BEGIN or .SUFFIXES in dependency
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# declarations.
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# TODO: Implementation
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# Just in case anyone tries to compile several special targets in a single
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# dependency line: That doesn't work, and make immediately rejects it.
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.SUFFIXES .PHONY: .c.o
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# The following lines demonstrate how 'targets' is set and reset during
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# parsing of dependencies. To see it in action, set breakpoints in:
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#
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# ParseDoDependency at the beginning
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# FinishDependencyGroup at "targets = NULL"
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# Parse_File at "Lst_Free(targets)"
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# Parse_File at "targets = Lst_New()"
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# ParseLine_ShellCommand at "targets == NULL"
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#
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# Keywords:
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# parse.c:targets
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target1 target2: sources # targets := [target1, target2]
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: command1 # targets == [target1, target2]
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: command2 # targets == [target1, target2]
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VAR=value # targets := NULL
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: command3 # parse error, since targets == NULL
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# In a dependency declaration, the list of targets can be empty.
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# It doesn't matter whether the empty string is generated by a variable
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# expression or whether it is just omitted.
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.MAKEFLAGS: -dp
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${:U}: empty-source
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: command for empty targets list
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: empty-source
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: command for empty targets list
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.MAKEFLAGS: -d0
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all:
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@:;
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