[Bug build/27123] New: Build fails for AIX 6.`

["parkej88 at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27123

            Bug ID: 27123
           Summary: Build fails for AIX 6.`
           Product: gdb
           Version: 10.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: parkej88 at gmail dot com
  Target Milestone: ---

Created attachment 13082
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13082&action=edit
config.log in directory ../gdbsupport

When attempting build on AIX 6.1, ../gdbsupport/thread-pool.cc fails to compile
with messages such as:

In file included from thread-pool.cc:24:
../gdbsupport/thread-pool.h:84:8: error: 'condition_variable' in namespace
'std' does not name a type
   84 |   std::condition_variable m_tasks_cv;
      |        ^~~~~~~~~~~~~~~~~~
../gdbsupport/thread-pool.h:31:1: note: 'std::condition_variable' is defined in
header '<condition_variable>'; did you forget to '#include
<condition_variable>'?
   30 | #include "gdbsupport/gdb_optional.h"
  +++ |+#include <condition_variable>
   31 |
../gdbsupport/thread-pool.h:85:8: error: 'mutex' in namespace 'std' does not
name a type
   85 |   std::mutex m_tasks_mutex;
      |        ^~~~~
There are includes in thread-pool.h for:

#include <thread>
#include <vector>
#include <functional>
#include <mutex>
#include <condition_variable>
#include <future>

Yet these are reported as not being included by gcc.

Building with:
gcc version 10.2.0 (GCC)

Configure:
./configure

Appreciate any help.

Thanks,

John

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