06b9b3e0ad
Quite a lot of churn on style, but lots of
good work refactoring complicated functions
and lots more unit-tests.
Thanks mostly to rillig at NetBSD
Some interesting entries from ChangeLog
o .MAKE.{UID,GID} represent uid and gid running make.
o allow env var MAKE_OBJDIR_CHECK_WRITABLE=no to skip writable
checks in InitObjdir. Explicit .OBJDIR target always allows
read-only directory.
o add more unit tests for META MODE
Merge commit '8e11a9b4250be3c3379c45fa820bff78d99d5946' into main
Change-Id: I464fd4c013067f0915671c1ccc96d2d8090b2b9c
52 lines
1.2 KiB
Makefile
52 lines
1.2 KiB
Makefile
# $NetBSD: cond-func-exists.mk,v 1.6 2020/11/30 20:12:29 rillig Exp $
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#
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# Tests for the exists() function in .if conditions.
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.if !exists(.)
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. error
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.endif
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# The argument to the function must not be enclosed in quotes.
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# Neither double quotes nor single quotes are allowed.
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.if exists(".")
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. error
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.endif
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.if exists('.')
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. error
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.endif
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# The only way to escape characters that would otherwise influence the parser
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# is to enclose them in a variable expression. For function arguments,
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# neither the backslash nor the dollar sign act as escape character.
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.if exists(\.)
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. error
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.endif
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.if !exists(${:U.})
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. error
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.endif
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# The argument to the function can have several variable expressions.
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# See cond-func.mk for the characters that cannot be used directly.
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.if !exists(${.PARSEDIR}/${.PARSEFILE})
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. error
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.endif
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# Whitespace is trimmed on both sides of the function argument.
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.if !exists( . )
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. error
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.endif
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# The exists function does not really look up the file in the file system,
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# instead it uses a cache that is preloaded very early, before parsing the
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# first makefile. At that time, the file did not exist yet.
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_!= > cond-func-exists.just-created
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.if exists(cond-func-exists.just-created)
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. error
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.endif
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_!= rm cond-func-exists.just-created
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all:
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@:;
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