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Date:      Fri, 22 Apr 2016 05:18:03 +0200
From:      olli hauer <ohauer@gmx.de>
To:        ports@freebsd.org
Cc:        Julian Elischer <julian@freebsd.org>
Subject:   Re: compiling ports with --sysroot= and -isystem
Message-ID:  <571997EB.9090901@gmx.de>
In-Reply-To: <571986C4.5050303@freebsd.org>
References:  <571986C4.5050303@freebsd.org>

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On 2016-04-22 04:04, Julian Elischer wrote:
> How can I add entries (like the above) to a port compile?
> I want to ADD things to CFLAGS.
> If I add 'CFLAGS=...' to the build (for example, of lsof)  it actually replaces all the CFLAGS already there.
> lsof (as the example) uses configure, so I would need to feed the added stuff into configure. Is there a standard way to do this?
> In the environment I'm using, I'm building for a machine that is not the build machine, but an appliance.
> It has a small number of differences in the include file contents, so I want it to compile using a different set of includes than those in /usr/include.
> 
> On the other hand I'm building a bunch of tools that do have t orun on the build machine and they need to use the regular /usr/include so I don't really want to replace them..
> 
> 
> Julian
> 
> p.s. usual "please reply directly" comment applies.. I'm on this list but get it in digest form..
> 

Use the '+=' notation, e.g.

# Makefile
...
CFLAGS+=	"--sysroot=...."
...


-- 
olli



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