[PATCH] Use AC_SUBST_FILE to replace @DEPEND@ with contents of .depend

[Thorsten Glaser]

On Thu, 12 Aug 2021, Damien Miller wrote:

> #@DEPEND@ is on a line of its own
> 
> AC_SUBST_FILE requires @DEPEND@ to appear without the '#'

Ah, ouch.

Hmmm. I tried this, working in gmake, first…

-----BEGIN cutting here may damage your screen surface-----
love:
	@echo not war

DEPEND1=\
@DEPEND@
DEPEND2=$(DEPEND1:@DEPEND@=)
$(DEPEND2)
-----END cutting here may damage your screen surface-----

… but nmake.exe and mirmake don’t like it. However, they do like this…

-----BEGIN cutting here may damage your screen surface-----
love:   
	@echo not war

DEPEND1=@BACKSLASH@\
@DEPEND@
-----END cutting here may damage your screen surface-----

… which also works with pmake (bmake (NetBSD-derived) for GNU) and gmake.


$ sed -e 's!@BACKSLASH@!\\!' -e 's!^@DEPEND@!foo: love!' <z.mk >w.mk
$ vsdevcmd
[…]

C:\misc\mk>nmake /nologo -f z.mk
not war

C:\misc\mk>nmake /nologo -f w.mk
not war

C:\misc\mk>nmake /nologo -f z.mk foo
NMAKE : fatal error U1073: don't know how to make 'foo'
Stop.

C:\misc\mk>nmake /nologo -f w.mk foo
not war


This is assuming we may have @BACKSLASH@ not on a line of its own.

bye,
//mirabilos
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