Re: building stable/8 on stable/10 host: is it supported?

On Thu, 30 Jan 2014 13:50:14 +0400 (MSK)
Dmitry Morozovsky <marck@rinet.ru> wrote:

> Colleagues,
> 
> looking into troubles with my builder I found more things: 
> 
> while on stable/9 host, it seamlessly builds all stable versions from
> 10 to 6. stable/4 had to be built in stable/6 jail
> 
> Now, after upgrade builder host system to stable/10, I can no longer
> build stable/8 and older (this in on fresh stable/10 jail,
> without /usr/obj *and* without -j, which prevents from succeeding
> upgrade_checks):
> 
> c++ -O2 -pipe -I/usr/obj/FreeBSD/src.8/tmp/legacy/usr/include 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf -c 
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:165:5: 
> warning: add explicit braces to avoid dangling else
>       [-Wdangling-else]
>     for (KeywordExt_List *temp = _head; temp; temp = temp->rest())
>     ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:39:22: 
> note: expanded from macro 'for'
> #define for if (0) ; else for
>                      ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:417:15: 
> warning: add explicit braces to avoid dangling else
>       [-Wdangling-else]
>               for (int i3 = imax; i3 >= 0; i3--)
>               ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:39:22: 
> note: expanded from macro 'for'
> #define for if (0) ; else for
>                      ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:415:11: 
> warning: add explicit braces to avoid dangling else
>       [-Wdangling-else]
>           for (int i2 = imax; i2 >= -1; i2--)
>           ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:39:22: 
> note: expanded from macro 'for'
> #define for if (0) ; else for
>                      ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:1638:5: 
> warning: add explicit braces to avoid dangling else
>       [-Wdangling-else]
>     for (unsigned int c = 0; c < _alpha_size; c++)
>     ^
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc:39:22: 
> note: expanded from macro 'for'
> #define for if (0) ; else for
>                      ^
> 4 warnings generated.
> c++ -O2 -pipe -I/usr/obj/FreeBSD/src.8/tmp/legacy/usr/include 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf -c 
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/src/version.cc
> c++ -O2 -pipe -I/usr/obj/FreeBSD/src.8/tmp/legacy/usr/include 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf -c 
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib/getline.cc
> c++ -O2 -pipe -I/usr/obj/FreeBSD/src.8/tmp/legacy/usr/include 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib 
> -I/FreeBSD/src.8/gnu/usr.bin/gperf -c 
> /FreeBSD/src.8/gnu/usr.bin/gperf/../../../contrib/gperf/lib/hash.cc
> make: don't know how to make /usr/lib/libstdc++.a. Stop
> *** Error code 2
> 
> Stop in /FreeBSD/src.8.
> *** Error code 1
> 
> Stop in /FreeBSD/src.8.
> *** Error code 1
> 
> Stop.
> make: stopped in /FreeBSD/src.8
> 
are you using gcc?

10 uses normally clang.

Erich
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