[GHC] #12695: Build failure due to MAP_NORESERVE being removed in FreeBSD 11.x and later

[GHC]

#12695: Build failure due to MAP_NORESERVE being removed in FreeBSD 11.x and later
-------------------------------------+-------------------------------------
           Reporter:  abbe           |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:                 |  Operating System:  FreeBSD
       Architecture:                 |   Type of failure:  Building GHC
  Unknown/Multiple                   |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 While trying to build GHC 8.0.1 on FreeBSD 11.x, I come across following
 compiler error:

 {{{
 /usr/local/bin/clang-cpp38  -DPROFILING -DTHREADED_RTS -DDEBUG  -fno-
 stack-protector -O2 -pipe  -Qunused-arguments -I/usr/local/include
 -fstack-protector -fno-strict-aliasing -Wall  -Wall -Wextra -Wstrict-
 prototypes  -Wmissing-prototypes  -Wmissing-declarations -Winline
 -Waggregate-return -Wpointer-arith -Wmissing-noreturn -Wnested-externs
 -Wredundant-decls  -Iincludes -Iincludes/dist -Iincludes/dist-
 derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts
 -Irts/dist/build -DCOMPILING_RTS -fno-strict-aliasing -fno-common
 -Irts/dist/build/autogen        -Wno-unknown-pragmas -O2 -fomit-frame-
 pointer -g -DRtsWay=\"rts_v\"     -MM -x c rts/posix/OSMem.c -MF
 rts/dist/build/.depend-v-p-dyn-l-debug-thr-thr_debug-thr_l-thr_p-
 debug_dyn-thr_dyn-thr_debug_dyn-l_dyn-thr_l_dyn.c_asm.bit
 rts/posix/OSMem.c:158:5: error: USE_LARGE_ADDRESS_SPACE needs
 MAP_NORESERVE
 #   error USE_LARGE_ADDRESS_SPACE needs MAP_NORESERVE
     ^
 1 error generated.
 }}}

 From some
 [https://svnweb.freebsd.org/base/head/sys/sys/mman.h?r1=273249&r2=273250&
 investigation], it turns out when it was there, it was not even
 implemented. The value of `__FreeBSD_version` (in case you plan to add
 conditional based on it), where it is
 [https://svnweb.freebsd.org/base/head/sys/sys/param.h?r1=273250&r2=273249&pathrev=273250
 changed] is `1100039`.

 Let me know if you need more information.

 Thanks for looking

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12695>
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