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

[Dmitry Morozovsky]

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


Thoughts? Thanks!


-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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