From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 10 Feb 2012 20:25:46 GMT
Subject: Re: 1.7.9, libcharset missing from EXTLIBS
Message-ID: <7vd39mph9x.fsf@alter.siamese.dyndns.org>
In-Reply-To: <7vipjer0yn.fsf@alter.siamese.dyndns.org>

Junio C Hamano <gitster@pobox.com> writes:

> Дилян Палаузов <dilyan.palauzov@aegee.org> writes:
>
>>>> What I am wondering is there are systems that need to include the header,
>>>> but locale_charset() does not live in /lib/libcharset.a, in which case we
>>>> cannot make HAVE_LIBCHARSET_H imply use of -lcharset.
>>
>> I do not understand this.  If you want to use a function from
>> libcharset, you have to use both #include <libcharset.h> and
>> -lcharset.
>
> You are mistaken.
>
> The only constraint is that you have to "#include <libcharset.h>" and need
> to link with the library that has locale_charset() defined.

I think the follow-ups in this thread already demonstrated why it is an
insufficient solution to make HAVE_LIBCHARSET_H imply -lcharset.

We would instead need:

	ifeq ($(uname_S),MyHomeBrewLinux)
        	HAVE_LIBCHARSET_H = YesPlease
                EXTLIBS += -lcharset
	endif

or

	# Define NEEDS_CHARSETLIB if you use HAVE_LIBCHARSET_H and
        # need to link with -lcharset
	NEEDS_CHARSETLIB =

	ifeq ($(uname_S),MyHomeBrewLinux)
        	HAVE_LIBCHARSET_H = YesPlease
		NEEDS_CHARSETLIB = YesPlease
	endif

	ifdef NEEDS_CHARSETLIB
        	EXTLIBS += -lcharset
	endif        

or something like that, I guess.