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Re: Difficulty building older Emacsen: <tab> characters seemingly foulin

From: Eli Zaretskii
Subject: Re: Difficulty building older Emacsen: <tab> characters seemingly fouling things up.
Date: Sat, 06 Jun 2015 18:00:36 +0300

> Date: Sat, 6 Jun 2015 14:22:04 +0000
> From: Alan Mackenzie <address@hidden>
> Recently, I've had to rebuild some older Emacsen because libraries they
> depend on have been updated.  An example is Emacs 23.1.  I'm running on
> an up to date GNU system (Gentoo, to be precise).
> I reconfigured this (with ./configure --with-gpm --without-tiff
> --without-gif), then attempted to build it (with make -j5, or make -j5
> bootstrap).
> This instantly bails out with a make error in .../lib-src:
>     make[1]: Entering directory '/usr/local/src/emacs-23.1/lib-src'
>     Makefile:144: *** recipe commences before first target.  Stop.
>     make[1]: Leaving directory '/usr/local/src/emacs-23.1/lib-src'
> Looking around L144 of .../lib-src/Makefile, I see this:
>     # ========================== start of cpp stuff =======================
>     $(HESIODLIB)
>     <tab..>  -I. -I../src -I${srcdir} -I${srcdir}/../src ${LDFLAGS}   <--- 144
> .  There is a <tab> at the beginning of L144 fouling up the Makefile.
> Somehow it seems that recent versions of the configuration toolchain
> (whatever that means) are incompatible with older configure scripts.
> 23.1 was before we had autogen.h in the top directory.
> Would somebody familiar with the configuration process please help me
> understand what's happening here, so that I can fix it.  Thanks!

Looks like line 143 should have had a backslash at its end, but
doesn't.  Likewise, line 144 should have ended with a backslash I
don't understand how did it happen, as lib-src/Makefile.in from Emacs
23.1 have these present.

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