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Date:      Wed, 01 Jun 2016 19:59:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 209945] devel/jsoncpp: 10.x assumes Does not build on 10.3 due to C++11 assumption on ppc64
Message-ID:  <bug-209945-13-FEf5H9hRLG@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-209945-13@https.bugs.freebsd.org/bugzilla/>
References:  <bug-209945-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209945

--- Comment #1 from Mathieu Simon <freebsd@simweb.ch> ---
Dear maintainer

I sent the message too early so sorry for the confusion.

It sounds odd but I was having some fun on some PPC64 hardware (iMac G5) wh=
ere
I wanted to build X11 which at some odd moment requires jsoncpp and fails
currently.

I think the option it doesn't like is that it tests for the FreeBSD version=
 and
if it finds that it is on 10.x or later it assumes we have a modern compile=
r in
the base system.=20

In many and most common cases that is absolutely true, but PPC(64) doesn't =
ship
with LLVM/clang in the base system but some older GCC 4.2.1 which doesn't
support C++11. Same applies to other exotic architecture like SPARC.

I don't know what the best idea would be to work around this issue:
- Have a check that if PPC or PPC64 is found that no C++11 flag is set
  (then again all other architectures like ... sparc ... for what I know ma=
ybe
  others too)  would have the same issue.
- Have a check for the compiler at some point and see if it supports C++11
- Or if possible check for the compiler - if it's too old/certain architect=
ure,
depend on a modern compiler from ports instead.

I think the first option would be easiest for what I can tell but it's not =
the
cleanest. (Yes it is foolish to run X.org on PPC64 hardware these days but I
wanted to see how far I could get)

Regards
Mathieu

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